Samsung Galaxy S 4 Review - Part 1
by Brian Klug on April 24, 2013 12:01 AM ESTGPU Performance
Both CPU and GPU clocks are higher on Samsung's version of the Snapdragon 600 (APQ8064AB). While the Snapdragon 600 used in HTC's One (APQ8064T) features a max GPU frequency of 400MHz, in the Galaxy S 4 the max frequency moves up to 450MHz. The increase in max frequency alone is modest (~12.5%), but the gains in GLBenchmark are far more pronounced for whatever reason.
As always, we'll start with low level analysis beginning with GLBenchmark's fill rate test:
Interestingly enough, fill rate is actually lower than on the HTC One. With so many variables at work here it's difficult to say exactly why this is, but the lowest hanging fruit is to blame it on memory bandwidth differences. Without getting inside the Galaxy S 4 (or more extensive poking around) it's unclear what speed Samsung is running its memory at, which could explain the differences here. We tried tossing the Galaxy S 4 in the freezer and re-running the test but performance didn't improve substantially. Note that GLB's fill rate benchmark is the only one that did not show the Galaxy S 4 ahead of HTC's One in raw performance.
The low level triangle tests all show significant performance gains over the only other Snapdragon 600 based phone we have (HTC One). Again, I'm not really sure what's going on here with APQ8064AB but the gains here are greater than what clock speed alone can be responsible for. Samsung could be running at higher GPU frequencies more aggressively than HTC or it could have software advantages (a newer Adreno driver perhaps?) or there could be more to this APQ8064AB mystery than we realize.
Egypt HD delivers a fairly sane number however. The Galaxy S 4 manages to outperform the HTC One by around 17% here. Again it's unclear why we're seeing greater performance than clock scaling alone would provide but the net is that the Galaxy S 4 does deliver better GPU performance than other Snapdragon 600 based devices today.
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Exodite - Wednesday, April 24, 2013 - link
The screen I'd imagine.The iPhone 5 has a screen that's ~65% the size, and ~35% of the resolution, of the one used by the Galaxy S4.
Its not the only reason of course but the screen matters a lot.
gnx - Wednesday, April 24, 2013 - link
Also a weakness of AMOLED. Since it needs to lighten up all subpixels max to get to white (and turns off all subpixels for gorgeous black). So web browsing, with so most sites having white background, really cranks up the power consumption of the display, hence the unexpectedly shorter battery life compared to other scenarios.sigmatau - Thursday, April 25, 2013 - link
I have a Nokia 900 with a Samsung sourced AMOLED plus which is beyond terrible outside on full brightness. I wonder how this one compares.lopri - Wednesday, April 24, 2013 - link
In that chart, iPhone 4S is leading Nexus 4. I have both and I call that bogus. Not sure what kind of iPhone 4S they've got.kmmatney - Wednesday, April 24, 2013 - link
We have mostly iPhones at my work, but a few SG3s. It's pretty easy to compare the real-use battery life at a conference, where we have to be on battery all day, and use are phones for normal stuff like email, texts, some web browsing, etc.. Without fail, the iPhones are all still going strong at the end of the day, while the SG3s have dead batteries. I was hoping the SGS4 would fix this, but I can't tell from the review. I hope the Note 3 increases the battery life.RealityMonster - Monday, April 29, 2013 - link
Apple has consistently refused to put tech in their phones unless they can still get 10hrs of battery life out of it. That's why the iPhone 5 is the first one to have LTE--the 4s just couldn't keep a charge long enough. Part of it is the form-factor, since a smaller phone means a smaller battery. Like other people have mentioned, though, the smaller screen is also a smaller power draw.So while you're never likely to see an iPhone that has a substantially better battery life than 10hrs under browsing conditions, you'll never see one that has a substantially lower life, either.
Gorgenapper - Tuesday, May 14, 2013 - link
That's a nice thing about Apple, they have a MUCH tighter control on their design and execution than Samsung ever could. People love to bash on Apple, and I admit that I'm not a big fan of many of Apple's decisions and products, but at least they know what they want to do, and go after it.Samsung, on the other hand, is more concerned with features, and less concerned with the quality of the execution of their overall product plan. I also get a vibe that Samsung caters more directly to the 'buy and throw away' mentality of most consumers, as OLEDs degrade at a faster rate than LCD (particularly blue subpixels), which was a reason why Samsung said that they used a pentile arrangement on the S3.
As for me, personally, I think I'll wait to see how the next gen iPhone looks like (rumored 4.5 ~ 4.8" screen), or more likely I'll wait to see how the next gen Nexus is. Assuming that I can't score a cheap 32gb Galaxy S4 after the big hype dies down.
mike55 - Wednesday, April 24, 2013 - link
I'm definitely torn between this and the HTC One. I'm also a bit disappointed that 32 GB of NAND isn't the standard minimum for flagship smartphones these days.Toss3 - Wednesday, April 24, 2013 - link
Both are great phones, but I'm buying the S4 because of the larger screen and smaller bezel. I also cannot stand the button layout of the HTC One. Was very surprised to see that the HTC One was very fluid, whereas the S4 stutters a bit. Especially considering the latter runs the SoC at a higher clockspeed. I also believe the camera of the S4 to be superior; even if the HTC One takes better night-shots, they're still not good enough for print or even watching on a 1080p TV(lots of noise and weird white-balance). The daylight shots from the S4 look pretty good, and are among the best of any phone right now.UpSpin - Wednesday, April 24, 2013 - link
4MP (2688x1520) translates to 22,76x12,87cm (8,96x5,067in) @ 300 DPI print resolution, I think that's enough. It's also above 1080p. People also forget that the HTC One contains a simple OIS!http://www.htc.com/www/zoe/stabilization/
But you're right, at best lightnig conditions, the S4 is superior, but I mostly never take pictures at best lightning conditions, but outside on a normal day, indoors poorly lit or indoors to scan documents.
According to other reviews the S4 stutters because of the gimmick features, once you turn off those advertised stuff, it should run better.