The Nexus 4 is based around a 1.5 GHz Qualcomm Snapdragon S4 Pro SoC, the quad core Krait APQ8064 with Adreno 320 GPU, which is still built on a 28nm process. The combination of APQ8064 for AP and MDM9x15 for baseband is Qualcomm's Fusion 3 platform, and the Nexus 4 and Optimus G are the first phones to market based on that platform. This is a relatively unique opportunity for Nexus, which until recently wasn't really first to market with the latest and greatest silicon. 

A while ago we posted our Nexus 4 and Nexus 10 performance preview. At that point we still had a lot of testing to perform, and many people noted that the Nexus 4 performance was far behind the LG Optimus G despite it being based on the same platform. Later, some people noticed that I had uploaded another set of results from GLBenchmark 2.5 to the online result browser with much better performance. The difference wasn't some over the air software update but rather that I was running some of the tests with the Nexus 4 in a ziplock bag inside the freezer to mitigate any condensation problems, and simultaneously nail down any possible thermal throttling. 

I've re-run everything and can confirm obviously that there was thermal throttling going on affecting some of the results, and have included the new results wherever there was a deviation from previous. For those wondering why the LG Optimus G wasn't affected in spite of it having the same platform, the reason is because the results from the Optimus G were run in parts due to some instability affecting its ability to run a complete set of tests without crashing. The Nexus 4 has newer drivers that don't crash during a full GLBenchmark 2.5 run but as a result run the device long enough for thermal throttling to kick in. 

GLBenchmark 2.5 - Fill Test

GLBenchmark 2.5 - Fill Test (Offscreen 1080p)

GLBenchmark 2.5 - Triangle Texture Test

GLBenchmark 2.5 - Triangle Texture Test (Offscreen 1080p)

GLBenchmark 2.5 - Triangle Texture Test - Fragment Lit

GLBenchmark 2.5 - Triangle Texture Test - Fragment Lit (Offscreen 1080p)

GLBenchmark 2.5 - Triangle Texture Test - Vertex Lit

GLBenchmark 2.5 - Triangle Texture Test - Vertex Lit (Offscreen 1080p)

GLBenchmark 2.5 - Egypt HD

GLBenchmark 2.5 - Egypt HD (Offscreen 1080p)

GLBenchmark 2.5 - Egypt Classic

GLBenchmark 2.5 - Egypt Classic (Offscreen 1080p)

The result of the tests in the freezer results that are much closer to what we'd expect based on the APQ8064 MDP/T runs and the Optimus G numbers I saw in Korea. 

When it comes to the CPU side of things there were results also affected by thermal throttling. I spaced some of those runs out (unintentionally) enough that performance didn't change, but for other things it did affect performance. I can't tell what GPU clocks end up being when the SoC decides to throttle, but it is possible to nail down what CPU performance state APQ8064 settles down into when there's throttling going on by looking at the state tables. 

 
Left - 1.134 GHz during throttling (running tests), Right - All the performance states

I can see the Nexus 4 not use any of the performance states above 1134 MHz when it's getting hot, as shown in the images above. I've tweeted a link to the pastebin for thermald.conf which I believe configures the thermal cutoffs and will be interesting to kernel hackers trying to play with these values. 

SunSpider Javascript Benchmark 0.9.1 - Stock Browser

BrowserMark

Google Octane Benchmark v1

Mozilla Kraken Benchmark

Vellamo Benchmark - 2.0

Vellamo Benchmark - 2.0

Sequential Read (256KB) Performance

Sequential Write (256KB) Performance

Random Read (4KB) Performance

Random Write (4KB) Performance

Our CPU performance side is unfortunately still dominated by JavaScript performance tests. The story there is that the Nexus 4 ships with Chrome (and originally shipped with a newer build of Chrome than what was on the market - we were running that updated version all along) and thus the mainline version of the V8 JavaScript engine. OEMs perform their own optimizations to the V8 library, and try to upstream whatever they can into the main project, but in the case of Chrome for Android that means V8 sans secret OEM sauce. 

Battery Life and Charging Android 4.2 - New Flavor of Jellybean
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  • Notwist - Monday, December 10, 2012 - link

    I've been married to the Apple ecosystem for the last several years, but more and more, I'm really intrigued by what Android offers, particularly with regards to how it streamlines and organizes things (the card system, displaying multiple bits of info on a single page, etc.). I have alot of trouble with organization in my life, so any systems/software/etc. that can help streamline things and act as closely to a digital assistant as possible would be very valuable to me.

    Also, I love the Podcasts you guys do, and was interested if you could elaborate on the whole "iOS is like an appliance, Android is a computing device" I've heard Anand mention a few times now.

    Basically: as somebody already in the Apple ecosystem, but willing to change (and pretty technically inclined), what are your feelings regarding the two OSes? What would you suggest? Thanks! =)
    Reply
  • EmilyGreen - Monday, December 24, 2012 - link

    Does this phone work on AT&T's 4GLTE or not? Anyone know? I've heard different stories. As a graphic designer (in New York), I need that data speed for sending large files. Reply
  • Mothi - Wednesday, February 06, 2013 - link

    Do Nexus 4 support Apple EarPods from apple? Reply
  • divinny - Wednesday, May 29, 2013 - link

    it does support the earpods cause it got the same 3.5 mm see here http://www.ozphoneshop.com/nexus-4-review , but it won't support the volume buttons it is apple device features Reply
  • addisonis19 - Wednesday, March 13, 2013 - link

    hey i was just wondering i am going to try to swap my battery and was wondering if that will void the warranty i just bought. is there any security tape when you take it apart. i didnt see any but i just want to make sure. Reply
  • Amit kumar - Thursday, March 28, 2013 - link

    Wow awesome devise. It feels fresh, modern and smooth. I agree with you, because I checked full specification of this phone on this site as well. www.gadtecho.com Reply
  • rohini - Thursday, March 28, 2013 - link

    it hasn't been released in India till now! :( Reply
  • nidz109 - Thursday, April 04, 2013 - link

    You should revisit the newest Nexus devices again. With Chrome Beta, the Nexus 10 and Nexus 4 bury the iPad, and iPhone 5 in Sunspider, Kraken, Octane, Browsermark and the RIA javascript benchmark. The Mali-T604 is behind, when it comes to GPU power, but the Adreno 320 is still very competitive. Take a look at the average GLBenchmark T-Rex HD off-screen benchmarks. Qualcomm is doing it right, and I'm patiently waiting for the S800. It's sad that Google's crappy Chrome for Android was holding everything back, but that's not the case anymore. Chrome Beta is actually awesome, and I use it more than the AOSP browser.

    With S800, they're going to have the SoC of the year.
    Reply

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