Talking of losing: Shift has always favoured Nvidia - comparable AMD graphics cards tend to do noticeably worse on it. HP F2024B We completed a simple circuit through the urban canyons of London (demo version). We used high details, 4x anti-aliasing and a resolution of 1920 x 1080 to really make the graphics cards sweat. HP F2019A

The Radeon HD 6970M CF was not very impressive this time. With 66.2 fps, it was overtaken by the GeForce GTX 460M SLI (81.6 fps) as well as the GeForce GTX 470M SLI (102.7 fps). And it looked a whole lot worse against the GeForce GTX 485M SLI, which managed 126.0 fps - an enormous lead of 90%. HP F2019B

The graphics on this rally simulator still look very good; it was one of the first games on the market with support for DirectX 11. Standout features are the realistic water effects and the excellent lighting. We relied on the demo’s integrated benchmark, which we ran with very high details, 4x AA and a 1920 x 1080 resolution. HP F4098A

The Nvidia graphics cards had the advantage in this game,HP F4809A much like they did in Need for Speed: Shift. While the GeForce GTX 485M SLI sat comfortably in first place with 114.3 fps, the Radeon HD 6970M CF (80.3 fps) was sandwiched between the GeForce GTX 460M SLI (75.4 fps) and GeForce GTX 470M SLI (93.0 fps).HP F4812A

The classic city-building game Anno 1404 powerfully demonstrates to all its competitors just what is technologically possible these days in the strategy genre. Its idyllic medieval world is a wonder to behold, so much so that it is sometimes hard to concentrate on the actual events of the game. HP Compaq 405231-001

As you can see from the performance graph below, the frame rates tended to fluctuate strongly. This can be explained by the fact that the load on the system varies according to the level of zoom being used.HP Compaq 407672-001

Our benchmark was based on the campaign mission in the free demo, consisting of a few minutes of gameplay. Even a 1920 x 1080 resolution, very high details and 4x anisotropic filtering do not cause any problems at all for modern high-end graphics cards. HP Compaq HSTNN-CB25

The Fraps tool gives a frame rate of 107.4 fps for the GeForce GTX 485M SLI, while the AMD Radeon HD 6970M CF was able to render our settings even more smoothly at 116.7 fps (+9%). HP Compaq 360483-004

We would have preferred to bring you the results of a Crysis 2 benchmark. However, we were soon forced to abandon this plan, as the Radeon HD 6970M CF produced massive graphics errors in this latest first-person shooter by Crytek, HP Compaq 364602-001while the second GeForce GTX 485M SLI failed to give any improvement in performance. So although it is more than three years old, we had to turn to the game’s predecessor for results.HP Compaq 365750-004

Very high details and a resolution of 1920 x 1080 on Crysis is an insurmountable challenge for most graphics cards (integrated benchmark). Neither the GeForce GTX 460M SLI (25.4 fps) nor the GeForce GTX 470M SLI (31.7 fps) were able to guarantee a wholly stutter-free experience. HP Compaq 372772-001

But with the GeForce GTX 485M SLI you can enjoy Crysis in its full glory (43.3 fps); and the first-person shooter ran most smoothly with the Radeon HD 6970M CF, which finished top with 49.0 fps. HP Compaq 383220-001

Without a doubt, the performance of these dual-GPUs, the most powerful mobile systems on the market, is excellent by notebook standards. Any game that is currently available will run smoothly, even with maximum graphics settings and various visual enhancements (AA and AF). High resolutions in the region of 1920 x 1080 are also no object.HP Compaq HSTNN-105C

Despite its markedly lower price, the Radeon HD 6970M CF comes amazingly close to its Nvidia counterpart; the GeForce GTX 485M SLI is only around 6% faster across all the benchmarks (1920 x 1080, ultra settings).HP Compaq HSTNN-C12C

So in terms of price-to-performance ratio, the Radeon HD 6970M CF is clearly the better choice, but the GeForce GTX 460M SLI offers somewhat more consistent performance, a lower error rate, more mature drivers and superior image quality. It also has more additional features.HP Compaq HSTNN-I12C

The two GeForce GTX 470M GPUs had a more difficult time of it. While the GeForce GTX 485M SLI was out in front by 33% overall, the Radeon HD 6970M CF, which comes at a similar price, also beat it by some margin. As for the GeForce GTX 460M SLI, we can no longer recommend it, as a single GeForce GTX 485M can match it for performance (GTX 485M SLI +62%).HP Compaq HSTNN-IB05

However, because of the numerous issues and disadvantages associated with dual-GPU systems, you should consider very carefully before you buy. As well as the pretty exorbitant energy consumption, there is the high temperature and noise production to bear in mind, as well as the issue of micro-stuttering.HP Compaq HSTNN-IB08 Dual-GPU notebooks are also bulky and heavy; they are desktop replacements, not really suitable for mobile use at all.HP Compaq PB994A

When it comes to the system noise, Dell's 14 inch notebook is definitely acceptable although with some shortcomings. When in an idle state, or when performing simple tasks such as surfing the web, the cooling fan goes off for longer periods of time. Sony VGP-BPS13AS battery

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