Our Web tests are JavaScript- and HTML5-heavy selections from our Web Browser Grand Prix series. Such tests are extremely meaningful to mobile devices because so much of the in-app content is served via the platform's native browser. These tests not only offer a view of each device’s Web browsing performance, but since the tasks are typically CPU-dependent, browser benchmarks (especially JavaScript-heavy tests) are a great way to measure SoC performance between products using the same platform and browser.
In order to keep the browser version even across all Android devices, we're employing a static version of the Chromium-based Opera on that operating system. Due to platform restrictions, Safari is best choice for iOS-based devices, while Internet Explorer is the only game in town on Windows RT and Windows Phone 8.
Browsermark 2.0
Rightware’s Browsermark 2.0 is a synthetic browsing benchmark that tests several performance metrics, including load time, CSS, DOM, HTML5 Canvas, JavaScript, and WebGL.

The Lumia Icon fares poorly, as does the HTC 8x. It's no surprise that Windows Phone 8's Internet Explorer 10 browser is no speed demon, and we hope this weakness is addressed in the Windows Phone 8.1 update with Internet Explorer 11.
Peacekeeper 2.0
Peacekeeper is a synthetic Javascript performance benchmark from Futuremark.

The Icon and IE10 perform similarly in the Javascript test, behind the three-way second-place tie between the Nexus 5, Meizu MX3, and Xiaomi Mi3.
WebXPRT 2013
Principled Technologies' WebXPRT is an HTML5-based benchmark that simulates common productivity tasks traditionally handled by locally-installed applications, including: photo editing, financial charting, and offline note-taking.

Nokia's entry overtakes the Exynos 5 Octa-based Meizu MX3 and ties the Xiaomi Mi3 in WebXPRT 2013, performing quickly with the stocks dashboard and photo effects tests, but scoring less impressive face detection and offline notes results.
Basemark OS II: Battery
Basemark OS II comes with a demanding battery test that almost completely drains the phone from 100% power to calculate a final score that represents its power and longevity.

The Lumia Icon performs well in this discipline, taking third place behind the much smaller-screened iPhone 5s, and slightly ahead of our current favorite phone, Google's Nexus 5.
From a practical perspective, we are pleased with the Icon/930's battery life. Despite heavy use, its battery indicator remains high throughout the day. And although status bars are known liars, the only activity that seems to tax the device is heavy gaming.
- Windows Phone Gets A New Flagship
- Design, Look, And Feel
- Windows Phone 8 And Nokia Software Tour
- Availability, Options, And Accessories
- Camera Features And Example Photos
- Microphones And Video
- Benchmark Suite, Methodology, And Test System Specs
- Results: System And Graphics Tests
- Results: Web And Battery Tests
- Results: Brightness, Black Level, Contrast Ratio, And Gamma
- Will The Icon Convert You From Android Or iOS?
Nokia Lumia Icon & Lumia 930 Review: Windows Phone, Premium : Read more
I'm surprised by the bloat. My 1020 (with Windows Phone 8.1) has 32GB, of which 29 is available, after O2's (slight) footprint.
You did not even mention one of the coolest and most useful features that this phone offers that no other on the market does.
The icon/930 comes with software that adapts every element on screen to the lighting conditions it is exposed to. Whether picture, text, or video it will analyze every pixel displayed and either lighten/darken/change contrast to make it perfectly view-able in any lighting condition.
I saw this feature in person against my own GS4 and an iPhone 5s and it absolutely annihilates the other phones. I took a picture with my own GS4, sent it to the other phones (iphone, nokia) and then compared side by side. In shade the picture was visible. In bright light both the GS4 and iPhone 5S the picture was washed out and darker parts not visible. The 930 software detected the light, analyzed the picture, and dynamically adjusted the picture to make it look the exact same in bright light as it did in the shade.
Hands down the coolest and most useful feature I have seen on a phone in the last couple of years.
Um, because Intel and MS are supposed to be attached at the hip? So, just because Intel isn't in the newest WP product, it's doomed? Surely that means nVidia is also screwed since their Tegra didn't make it into the 930.
Nearly every carrier puts it's logo on all its phones. Verizon is no different here.
The icon/930 comes with software that adapts every element on screen to the lighting conditions it is exposed to. Whether picture, text, or video it will analyze every pixel displayed and either lighten/darken/change contrast to make it perfectly view-able in any lighting condition.
This has been in most Lumia phones, and I'm a fan of it. The auto-brightness setting works very well regardless of the lighting situation you're in. My 925 is perfectly legible in just about any conditions.
(I had been using Lumia 920 before I returned to 808 PureView. I still have it for testing purposes)
Most of that is the OS itself.
My original post was wrong; on my 1020, there's 29 of the 32 available to start with, of which 2.82GB is taken up by the system. Assuming a couple of gigs of apps and data, that still seems a bit better than what you get on the Icon. I suppose the lack of O2 bloat on my phone is because I didn't get it directly from them, though had I done so, it would've been the 64GB version... :|
You are in for a treat then because they have enhanced it and it is even better for the 930.
They had a 920 and 925 on display there as well and while they did a decent job of auto adjusting it was 10x better on the 930. The representative said they reworked the software's algorithms to do a better job.
(I had been using Lumia 920 before I returned to 808 PureView. I still have it for testing purposes)
Most of that is the OS itself.
Android and iOs are like a graveyard of dead icons. If they font adapt, their fingerprint sensor, eye recognition and waterproofing wont be able to protect it.
In the case of this device: Perfectly smooth performance no matter what you do. You can forge the phone all the time and with how many apps you want, this thing will not slow down, compared to Android. Plus the scrolling is butter smooth. Flawless 100% of the time.
It's also easier and in my opinion more fun to use.
Also, like iOS, you can't screw you device installing/running too many apps.