Database Users

[Q] Which is better for Snapdragon 600 or Exynos 5

When considering which Galaxy S4 to buy I'm not sure which is better the US or International version.
US:
Snapdragon 600
1.9 Ghz
Quad Core Krait 300.
or
International:
Exynos5
1.6 Ghz Octal Core
Quad Core Cortex A15 / Quad Core A7
Which is better in terms of performance?
Are they relatively the same performance since both use a quad core for high performance?
Which is better for gaming?
Which is better for battery life?

Exynos is better in every aspect
S4 INFO

Better in sucking battery, yes! But that's it. You can expect development to be absolute crap as No developer wants to develope for exynos.
Sent from my HTC One S using xda app-developers app

Read this and educate yourself
http://forum.xda-developers.com/showthread.php?t=2191850
If your going to troll at least get your facts straight
Exynos will preform better and save more battery than the snapdragon 600 or almost any android device for that matter and he didn't ask for dev support comparisons
S4 INFO

Imo, real world battery tests and endurances is better than reading those facts. Tbh, it's too early to conclude which is better. Trully, exynos may sound better and more power efficient based on paper, but as of now, we aren't really absolutely sure that the s600 is far left behind. I think, the best for now is to wait for future actual owners of the official S4 to test the performance and battery life themselves..
Sent from my HTC One S4 using xda-developers app

it's too early to tell, yes.
but I'm sure the Exynos Octa will perform as good as the snapdragon
and probably save more battery, since that's the whole point lol
PLUS it has a much newer and better GPU which is the reason I'm most interested in it

PLUG313 said:
it's too early to tell, yes.
but I'm sure the Exynos Octa will perform as good as the snapdragon
and probably save more battery, since that's the whole point lol
PLUS it has a much newer and better GPU which is the reason I'm most interested in it
Click to expand...
Click to collapse
it's not so new and better like you say. the new gs4 has a powervr sgx544 wich is less performant than the adreno 320 of the snapdragon 600 http://www.glbenchmark.com/result.jsp?base=gpu

Many, MANY, of the top developers have already said they will not develop for Exynos. That would end that choice for me.

Omar56 said:
it's not so new and better like you say. the new gs4 has a powervr sgx544 wich is less performant than the adreno 320 of the snapdragon 600 http://www.glbenchmark.com/result.jsp?base=gpu
Click to expand...
Click to collapse
how odd, I thought it was way better from what I read around the forums
._____________.

crawlgsx said:
Many, MANY, of the top developers have already said they will not develop for Exynos. That would end that choice for me.
Click to expand...
Click to collapse
May i ask why? Sorry but i'm new to the samsung forums and don't have any idea why do the developers of exynos were withdrawing to support such a beast processor..
Sent from my HTC One S4 using xda-developers app

Samsung won't release proper sources to help in development
But don't let that guy fool you we have dev support just not as much as say a Sony or HTC device
S4 INFO

samsung does show reluctance in helping developers especially with exynos!
exynos 5 did gave an impression, with multiple cores for battery saving.. but the real verdict will be available as soon as phone is released!!
snapdragon is a beast, no doubt in that!
Qualcomm will surely release sources so no problem with development of snapdragon s4!
I'm sure for such high activity device, CM will be there but the maintainers are no longer making CM, that's a bad news!!
I don't understand samsung's problem with open source, even in mid range phones like y,grand etc they have put broadcom chip with no available sources which makes CM development very hard for them!

Yup

js2892 said:
samsung does show reluctance in helping developers especially with exynos!
exynos 5 did gave an impression, with multiple cores for battery saving.. but the real verdict will be available as soon as phone is released!!
snapdragon is a beast, no doubt in that!
Qualcomm will surely release sources so no problem with development of snapdragon s4!
I'm sure for such high activity device, CM will be there but the maintainers are no longer making CM, that's a bad news!!
I don't understand samsung's problem with open source, even in mid range phones like y,grand etc they have put broadcom chip with no available sources which makes CM development very hard for them!
Click to expand...
Click to collapse
i think Samsung is afraid of giving up their edge.. samsung never uses the mainstream parts.. they developed AMOLED when everyone went LCD, they went quad when everyone else went dual, and octa when everyone else went quad, while others stayed close to stock, Samsung made some awesome innovations in its unappreciated touchwiz that fixed lots of missing elements of its competitors (toggles in dropbar, delete apps from drawer, task killer inside long-press, divx/xvid support, exfat, swype, customizable gestures, etc)
Samsung doesn't want its competition to be able to take anything from it. the competition doesn't have anything to lose, as everyone else is pretty much doing the same thing in terms of the same screen given to every phone, and the same processor in every phone.
just my thoughts into it, its better for me if they were, but i think that's why they aren't so open.
Sent from my GT-I9300 using xda app-developers app

mikegonzalez2k said:
When considering which Galaxy S4 to buy I'm not sure which is better the US or International version.
US:
Snapdragon 600
1.9 Ghz
Quad Core Krait 300.
or
International:
Exynos5
1.6 Ghz Octal Core
Quad Core Cortex A15 / Quad Core A7
Which is better in terms of performance?
Are they relatively the same performance since both use a quad core for high performance?
Which is better for gaming?
Which is better for battery life?
Click to expand...
Click to collapse
in my experience and study;
>>>>>>>>>>>>>>>>>>>> Snapdragon

x102x96x said:
in my experience and study;
>>>>>>>>>>>>>>>>>>>> Snapdragon
Click to expand...
Click to collapse
do you mean the exynos is superior?

essentially they are both QUAD core chips right?, one having a high power sibling to offload heavy duty work, and the other just being heavy duty.
So if this was the case the 1.9ghz chip would be faster anyway right?

NuclearEMP said:
essentially they are both QUAD core chips right?, one having a high power sibling to offload heavy duty work, and the other just being heavy duty.
So if this was the case the 1.9ghz chip would be faster anyway right?
Click to expand...
Click to collapse
Actually no the krait cores in the snapdragon 600 have to compromise performance to save battery whereas Exynos doesn't it's alot faster + has better gpu all that while saving more battery
S4 INFO

TingTingin said:
Samsung won't release proper sources to help in development
But don't let that guy fool you we have dev support just not as much as say a Sony or HTC device
S4 INFO
Click to expand...
Click to collapse
Just depends on what part of Dev is important to you.
Exynos S4 will NOT get official CM support, but I am sure there will be lots of half baked themed TW roms if that is what you like.

crawlgsx said:
Just depends on what part of Dev is important to you.
Exynos S4 will NOT get official CM support, but I am sure there will be lots of half baked themed TW roms if that is what you like.
Click to expand...
Click to collapse
Team hacksung have come out as saying that no one person speaks for the group
www.androidpolice.com/2013/03/19/te...ther-confirms-nor-denies-plans-for-cm-on-gs4/
I.e it may very well attain cm support
And as for the half baked cm roms that's also incorrect actually touchwiz roms are excellent
S4 INFO

[Q] Galaxy s4 CPU, music and more

B) another question: the octa core version supports 4G LTE doesnt it? or snapdragon has better 4G support?
Snapdragon 600 (1.9ghz speed, 4 cores) or Exynos 5 Octa(4 cores A15, clocked at 1.6ghz+ 4 cores 1.2GHZ A7)
1) what is faster? exynos or snapdragon?
2) which one is more effectively? (battery friendly)? (***in both high-huge use and low-idle use.. in which one battery life are better)
3) there are any benchmarks test for both of them.?
i just dont know which one is better..
Adreno 320 GPU vs PowerVR SGX 544MP3
4) which one is stronger?
5) i really dont know which version should i get.. US version(with 1.9ghz) or international(1.6ghz) their performance are really similar?
6) there is any stronger smartphone out now?
6) will the galaxy s4 have wireless charging?
MUSIC:
7) what about music? is there any quality speakers?
8) headphone will be HD/ very good quality.. ? (like in iPhone 5)?
8)

1) the snapdragon is over clocked so is supposed to be faster in cpu but the exynos won't lack behind.
2) for battery of course the exynos since only 4 cores will be running so if ur doing a low use the A7 will be running which are great for battery life and when you kick it to high use that's when the bug guns A15 come in play.
3)for the exynos no because it is not available yet but for the snapdragon it got the twice score of an iphone 5 so that gives a clear answer.
4)i think that would go to the powerVr since the exynos version is expected to be better in Gpu.
5)that depends on you.
6)of course it will but will be optional.
7) the speakers are supposed to be good than the previous models.
8) i am not sure about that but even if they aren't there are always beats.
hope i gave you a clear answer and if there is anything else you would like to know let me know.

Blackwolf10 said:
1) the snapdragon is over clocked so is supposed to be faster in cpu but the exynos won't lack behind.
2) for battery of course the exynos since only 4 cores will be running so if ur doing a low use the A7 will be running which are great for battery life and when you kick it to high use that's when the bug guns A15 come in play.
3)for the exynos no because it is not available yet but for the snapdragon it got the twice score of an iphone 5 so that gives a clear answer.
4)i think that would go to the powerVr since the exynos version is expected to be better in Gpu.
5)that depends on you.
6)of course it will but will be optional.
7) the speakers are supposed to be good than the previous models.
8) i am not sure about that but even if they aren't there are always beats.
hope i gave you a clear answer and if there is anything else you would like to know let me know.
Click to expand...
Click to collapse
thanks for taking your time for answering me
do you think exyons 5 will be overclock-able? i hope we will be able to get 1.8ghz or something without losing battery life or something..

yes i think after rooting and few kernel releases you will be able to overclock the Cpu and maybe also the Gpu but why would you need that the exynos on the galaxy s4 is already going to be a beast and it's expected to be in par with the snapdragon and also your welcome

Actually the Exynos is better in every aspect (battery speed and gpu) clock speeds don't mean anything a15s are faster than krait fullstop
S4 INFO

re
4 core?, I guess its Octo-core Exynos
Well unless you don't use both of them, you can't figure out which one is better.
May be someone may use and let us know.

well even if the exynos is better in every aspect the biggest advantage would still be low task using so its battery saving so everything else is probably the same or little difference and what do you mean clock speeds don't mean anything ?? have you seen the benchmark difference between the galaxy s4 and the htc one ?? and i know the A155 are better than krait that's why the snapdragon is overclocked
@samsingh02 it is octa core but like 4+4 so the 8 cores will never function together it would be like A7 for the low tasks and the A15 when you are on a heavy task like gaming
anyway the thing is the snapdragon is for 4G network and the exynos for the 3G network end of story.

Blackwolf10 said:
well even if the exynos is better in every aspect the biggest advantage would still be low task using so its battery saving so everything else is probably the same or little difference
Click to expand...
Click to collapse
I didn't bother to explain it has been done to much and speed is actually a big factor to make a long story short read this
http://forum.xda-developers.com/showthread.php?t=2191850
and i know the A155 are better than krait that's why the snapdragon is overclocked
@samsingh02 it is octa core but like 4+4 so the 8 cores will never function together it would be like A7 for the low tasks and the A15 when you are on a heavy task like gaming
Click to expand...
Click to collapse
That's the while point
anyway the thing is the snapdragon is for 4G network and the exynos for the 3G network end of story.
Click to expand...
Click to collapse
Some benchmarks show Exynos having 4g compatibility
S4 INFO

but that would be the galaxy note 2 exynos 4 because the exynos 5 on the galaxy s4 is not out yet the only exynos 5 is on the nexus 10

Blackwolf10 said:
but that would be the galaxy note 2 exynos 4 because the exynos 5 on the galaxy s4 is not out yet the only exynos 5 is on the nexus 10
Click to expand...
Click to collapse
Exynos 5 in the nexus 10 is dual core
But the second part
Where did Exynos 4 come from what are u talking about
S4 INFO

i know it's clocked at 1.7 and i was talking about the note 2 i read in the Xda here that it was available on a carrier in the U.S. with the exynos

You can see here which countries will get the octa core version and which countries will get the Snapdragon version
http://goo.gl/EePDg

B) another question: the octa core version supports 4G LTE doesnt it? or snapdragon has better 4G support?

darixtorento said:
B) another question: the octa core version upports 4G LTE doesnt it? or snapdragon has better 4G support?
Click to expand...
Click to collapse
Just to butt in, doesn't Exynos octa also have LTE support? I want to know what bands it supports.
Sent from my Xperia Arc S using xda premium

[POLL] Are You Getting The Galaxy S4 Octa 5 Exynos or Quad Core Snapdragon 600?

Just wanted to do a quick poll on if your getting the Galaxy S4 Octa 5 Exynos or Quad Core Snapdragon 600.
If you have a reason for choosing one variant of the Galaxy S4 over the other be sure to comment below!

Haven't decided if I'm upgrading my device yet but if I am, I will be attempting to get the Exynos Octa. The improved battery life and the PowerVr GPU as well as the wolfson DAC are all swinging me towards the Octa. Based on previous Samsung devices, the international version received updates quicker. One downside to the octa at the moment is the lack of LTE, although I find 3G to be fast enough so it isn't really a downside for me.
Sent from my Galaxy Nexus using xda premium

I voted exynos though by the time they get to the UK the Note 3, Motorola X and Nexus 5 should all be on the horizon so I may end up getting any one of these four phones especially if Sam manage to do some tardis like design with the Note 3 so it doesn't actually get bigger in the pocket.

I'm going to say there will be about 3 or 4 million Snapdragon devices sold JUST in the U.S. .
Just about every other country except for South Korea and maybe Russia will also be mostly Snapdragon versions. Hopefully, for those of you that ordered the Exynos versions, Samsung will let some of them slip out to other locations as long as they have allotted enough to those two countries..

Octa 5 Exynos seems more future-proof than Qcom Snapdragon 600.
^O^

Wolfson chip is all I care for now. But kind of annoying to learn new standard will be 9505 as most countries will receive those. So development will support them more than Exynos. However, even less development support can't force me switch to 9500 as sound quality is the most important part for me right now. I'm listening to a so much music and I spend the same money for my headphones as I do for my phones.

Unsure as of yet, I don't put bat life as a high priority, I want root but only for the apps that require root, I want the best potential game play and sound, I want lte for faster web than I get now on hspa+42 with my n4, so I guess I have to wait till late June early July and see what the exynos is like by then in the UK or even if the phone has been superceded by then.

I want Exynos variant, but hope with new firmwares will score better on gpu benchmarks...

Am in America and there's LTE to take advantage of, so I have to go with Snapdragon. I would really love to use the i9500, but for me, the better LTE speeds will trump the possibly better processor/audio/battery life of the Exynos. Out in the suburbs, a difference of LTE can determine whether you're streaming Youtube in 1080p, or barely skating by on 360. Likewise with Netflix and other services like that.
It would be awesome if I could have the best of both worlds, but I suspect by the time they did that (if they do it at all with the Galaxy S4) then the Note 3 will be out and then I may as well get that.

that snap wont have the wolfeson chip? wtf!!!! i have a note2 but was looking to get the s4,oh well.. i just wonder how much worse the dac will sound

Quad Core Snapdragon 600
Why?
On Sprint and have an upgrade
rumored to get better cpu support
LTE is available in my area
difference in performance is not great enough to give up other advantages

SD600 because of LTE
Sent from my GT-I9300 using xda app-developers app

9505
techfanatic9 said:
Just wanted to do a quick poll on if your getting the Galaxy S4 Octa 5 Exynos or Quad Core Snapdragon 600.
If you have a reason for choosing one variant of the Galaxy S4 over the other be sure to comment below!
Click to expand...
Click to collapse
9505

Going for the i9500 as that's what we are having in here. No LTE yet
Swyped from another galaxy

Going for GT-I9500.
No 4G in my area yet.

No LTE, neither I9500 here. Undecided which one to buy. I'll wait for few reviews. I want the Octa, but waiting few updated benchmarks and battery life from Octa before deciding if deserves the money and all the processes to get it instead of i9505
Sent from my GT-I9300 using Tapatalk 2

shadowyman said:
Wolfson chip is all I care for now. But kind of annoying to learn new standard will be 9505 as most countries will receive those. So development will support them more than Exynos. However, even less development support can't force me switch to 9500 as sound quality is the most important part for me right now. I'm listening to a so much music and I spend the same money for my headphones as I do for my phones.
Click to expand...
Click to collapse
What would the advantage of the Wolfson DAC be over the Snapdragon GS4? GSMarena's audio testing shows the Snapdragon GS4 has better audio quality than my Nexus S which has a Wolfson DAC.

Since here in Luxembourg we are getting only the I9505 version, I'll be getting the Snapdragon version. I don't really care about benchmarks and CPU's though... so I think I will be ok with both versions

Snapdragon here.
not like I have much of a choice

While I am intrigued by the BIG.Little architecture, and would prefer an exynos with LTE and support for T-mobile radio bands. Since that doesn't exist currently, I am resigned to the Snapdragon, but really not that upset about it. The Snapdragon 600 is a beast in its own right, I'll only be mad if the battery life ends up being much better with exynos over snapdragon.
I'm not too worried about a 10-15% performance difference, and think that development will be better on the snapdragon. I'm much more excited for the new screen, removable battery and sd card, new sensors, wireless charging add-ons, smart cover, almost non-existent light leakage, etc..

Which one do you suggest when buying the S4 .... Snapdragon 600 or Exynos 5 Octa ?

I am planning to buy S4
But I'm not sure which is better
Snapdragon 600
1.9 Ghz
Quad Core Krait 300.
or
Exynos5
1.6 Ghz Octal Core
Quad Core Cortex A15 / Quad Core A7
4g and installing roms is not important to me
Which is better in terms of performance? less lag ?
Which is better for gaming?

Yet another thread
https://www.youtube.com/watch?v=xo7nJQzfWsE&feature=youtube_gdata_player
Look at that review and make your mind up
~ Taylor_Swift
Sent from my Samsung Galaxy Note II GT-N7100 using XDA Premium HD

................

an9093 said:
I am planning to buy S4
But I'm not sure which is better
Snapdragon 600
1.9 Ghz
Quad Core Krait 300.
or
Exynos5
1.6 Ghz Octal Core
Quad Core Cortex A15 / Quad Core A7
4g and installing roms is not important to me
Which is better in terms of performance? less lag ?
Which is better for gaming?
Click to expand...
Click to collapse
Hi,
Look HERE

That's a no brainer....the Exy. But does anyone really have a choice? Especially in America.

i have a choice they both are available the same price with local warrenty

The exynos here is cheaper online but for me, no 4G = no go. Since buying an S3 4G last year there is no way I can go back to 3G again.
The speed difference is enormous and 4G here costs no more than 3G. And on the Telstra network it's even better. Have hit over 50mbps on speed tests.
Sent from my GT-I9505 using xda premium

dman777 said:
That's a no brainer....the Exy.
Click to expand...
Click to collapse
Except it really isn't.
Sent from my Qualcomm Galaxy S4

Over simplifying it the Octacore version is slightly faster but has a poorer battery (4G not withstanding). Snapdragon touch slower (but faster than most phones todsy) but it'll last longer. There are lots of debates on whether the Octacore version ca be improved but this is how it stands right now as the biggest differences.
Other option is Stock version......
-Airax

Pagnell said:
Except it really isn't.
Sent from my Qualcomm Galaxy S4
Click to expand...
Click to collapse
Well, in this http://www.youtube.com/watch?v=ZeRcKHF4bDc&feature=youtu.be&a the girl states that she can not tell a difference between the two....except in GPU power. So, if you like to have less GPU power...then yes, the Qualcomm would be what you want.

dman777 said:
Well, in this http://www.youtube.com/watch?v=ZeRcKHF4bDc&feature=youtu.be&a the girl states that she can not tell a difference between the two....except in GPU power. So, if you like to have less GPU power...then yes, the Qualcomm would be what you want.
Click to expand...
Click to collapse
You have that a little backwards: http://forum.xda-developers.com/showpost.php?p=40554113
Also, go and ask any cedarview Atom owners what they think of the PowerVR SGX54x and the driver 'support' it gets. After that fiasco I would never buy another product that has a GPU from Imagination Technologies.

XTCrefugee said:
You have that a little backwards: http://forum.xda-developers.com/showpost.php?p=40554113
Also, go and ask any cedarview Atom owners what they think of the PowerVR SGX54x and the driver 'support' it gets. After that fiasco I would never buy another product that has a GPU from Imagination Technologies.
Click to expand...
Click to collapse
That is interesting. But seeing for myself in that video, it is hard not to believe that the Exy GPU is better.

dman777 said:
Well, in this http://www.youtube.com/watch?v=ZeRcKHF4bDc&feature=youtu.be&a the girl states that she can not tell a difference between the two....except in GPU power. So, if you like to have less GPU power...then yes, the Qualcomm would be what you want.
Click to expand...
Click to collapse
I'm still waiting to see what makes the Exynos version a 'no brainer'. Was that it?
Sent from my Qualcomm Galaxy S4

Pagnell said:
I'm still waiting to see what makes the Exynos version a 'no brainer'. Was that it?
Sent from my Qualcomm Galaxy S4
Click to expand...
Click to collapse
Sure, no problem....It was "Exynos takes the edge, ie camera and GPU". You can also watch the video and see...physical proof is nice.

I see. So for someone who needs 4G and has a preference for CM or AOKP the Exynos is still a 'no brainer' simply because it's performance is slightly better on certain benchmarks?
Sent from my Qualcomm Galaxy S4

,,,,,,,,,,,,,,,,,,,,

????????????

Why are you saying Exynos GPU is better than S600? I saw benchmarks where the Adreno 320 beat the powerVR SGX544 (though benchmarks are sometimes useless ^^)

Exynooooooooooooooooooooooooooooooooooooooooooos

ive seen many vids on youtube about the two devices and i gotta say there not a big diffrenet in perfrmance
just get the one that available in your country

[Q] S4 octa core or quad core?

Which one do i get!?!?!?! I cant decide... help me!
I don't think i will get 4G anytime soon (too expensive on my network) so i really don't know which version to get? which on has better battery life etc..
pls help, detailed answers will be really helpful. I need to make a decision before Friday.

I suggest, go for S4 I9500 Octa-Core. Check my detailed previous reply to a similar question.
| Mobile Message

Octa= heads, quad=tails..good luck Mine was tails and I'm very happy with it. Did you do any research yet? Enough on the web about it.

Dr.Engineer said:
I suggest, go for S4 I9500 Octa-Core. Check my detailed previous reply to a similar question.
| Mobile Message
Click to expand...
Click to collapse
When i click to see your previous posts i get this 'Search is temporarily unavailable. We apologize for the inconvenience.'
Can you give me the link?
Thanks

I would recommend the quad core. I have the octa cor myself but the quad core is said to have better battery life and it has LOTS of custom roms

Octa core is not octa at all. It's rather dual quad. Eight cores never work at once in this cpu. This is so called big little architecture designed to save battery while keeping high cpu power. Looks like this attempt failed for now. Take a look at gsm arena comparison.
IMHO 9505 is way better deal.
Snapdragon Galaxy S4

slig said:
Octa core is not octa at all. It's rather dual quad. Eight cores never work at once in this cpu. This is so called big little architecture designed to save battery while keeping high cpu power. Looks like this attempt failed for now. Take a look at gsm arena comparison.
IMHO 9505 is way better deal.
Snapdragon Galaxy S4
Click to expand...
Click to collapse
I dont think it failed entirely. If the exynos 1.6GHz quad can beat the 1.9GHz quad Krait in terms of performance than that's a feat in itself.

Get the one which is officially sold in your country.

Gogeta_138 said:
pls help, detailed answers will be really helpful. I need to make a decision before Friday.
Click to expand...
Click to collapse
Well..it's Friday did you make a decision?

Boes40 said:
Well..it's Friday did you make a decision?
Click to expand...
Click to collapse
Yepp getting the quad core one.. i9505
Thanks for all the help guys

You made the best decision enjoy!

I have the octa core and i love it! Although I would add that i do not have the quad core to compare with. Both are great.
In the end it all boils down to LTE or not to LTE. I chose not to. For me, anything above 3Mbps is quite handy. And i get 6Mbps+ approx on my AT&T prepaid HSPA+.

slig said:
Octa core is not octa at all. It's rather dual quad. Eight cores never work at once in this cpu. This is so called big little architecture designed to save battery while keeping high cpu power. Looks like this attempt failed for now. Take a look at gsm arena comparison.
IMHO 9505 is way better deal.
Snapdragon Galaxy S4
Click to expand...
Click to collapse
Actually all the 8cores could together but just not ATM , only after Hmp will be implemented.
Sent from my iPhone 5 using Tapatalk

octa 11 hours talk time, quad 18 hours talk time, according to a review.
John.

Tinderbox (UK) said:
octa 11 hours talk time, quad 18 hours talk time, according to a review.
John.
Click to expand...
Click to collapse
http://www.gsmarena.com/samsung_galaxy_s4_i9500_vs_i9505-review-930p6.php
"Performance-wise, the octa-core Exynos has a slight advantage, but that's not because of the higher number of cores. You have got to remember that only a single set of four cores is active at a any single time - either the power-sipping Cortex A7's or the number-crunching Cortex A15's.
It is evident from our tests however, that the Exynos version of the Galaxy S4 is not much more powerful than the Snapdragon 600. Furthermore, the battery life performance of the Exynos-touting variant is consistently worse than the one by the Snapdragon 600 version."
Which is why i picked i9505. Almost no difference in speed but big difference in battery. My i9505 lasts almost 2 days sometimes.