ATI Mobility Radeon HD 4870 X2
Two Mobility Radeon HD 4870 in Crossfire mode (similar to SLI). Doubles the power consumption but shows only 0-50% better performance (depends on the game support, drivers and settings).
Because of the high amount of shaders (2x800) the gaming performance is very good and allows the gaming of all DirectX 9 games in high resolutions and details. Even demanding DirectX 10 games of 2008 (Crysis Warhead, Far Cry 2) can be played with high details.
The Mobility HD 4870 x2 is based on two RV770 chips and features 2x800 stream processors (2x160 5-dimensional shader cores). These cores do the graphic work of the shader- and pixel pipelines of older GPUs. The stream processors are also called ALUs and are grouped in five-way VLIW units. Each of the five instructions of a VLIW bundle has to be independent from the others and therefore the performance depends on the optimization of the driver.
The Mobility Radeon HD 4870 X2 includes the Avivo HD called video technology including an onboard soundchip for 7.1 sound output over HDMI or DisplayPort and the 2nd generation UVD (Unified Video Decoder). This UVD 2 supports full bitstream decoding of H.264/MPEG-4 AVC and VC-1 streams. In addition to this, it also supports dual video stream decoding and Picture-in Picture mode which makes the UVD full BD-Live compliant. Simplified, the Avivo HD technology handles all video tasks and enables the GPU to decode HD videos.
AMD published a current consumtion of about 2x65 Watt for the HD 4870 X2. Still it is unclear if this value represents the chip alone or the whole mxm board including the memory (which would include about 2x5 Watt).
The card supports as the first mobile card GDDR 5 graphic memory. The question is, if this fast memory can be used by the card optimally (because of the slow core clock compared to the desktop counterpart). Furthermore, the pricing is rather high, therefore most cards will feature common GDDR 3 RAM.
Compared to the desktop ATI Radeon HD 4870 X2, the mobile 4870 X2 features a slower core clock and therfore should perform a bit slower than a desktop HD 4850 X2.
| Manufacturer | ATI |
| Series | Mobility Radeon HD 4000 |
| Codename | M98-XT |
| Pipelines | 1600 - unified |
| Core Speed * | 550 MHz |
| Shader Speed * | 550 MHz |
| Memory Speed * | 888 MHz |
| Memory Bus Width | 256 Bit |
| Memory Type | GDDR5 |
| Max. Amount of Memory | 2048 MB |
| Shared Memory | no |
| DirectX | DirectX 10.1, Shader 4.1 |
| Transistors | 1912 Million |
| technology | 55 nm |
| Features | OpenGL 2.0, PCI-E 2.0 x16, Powerplay, DisplayPort support up to 2560x1600, HDMI support up to 1920x1080 (both with 7.1 AC3 Audio), 1x Dual-Link/Single-Link DVI, 1x Single-Link DVI Support (all display ports have to be supported by the laptop manufacturer) |
| Notebook Size | large |
| Date of Announcement | 09.01.2009 |
| Link to Manufacturer Page | http://ati.amd.com/products/mobilityrade... |
benchmarks
3DMark 05: - Standard 1024x768
0% 
100%
min: 14329, avg: 16940, max: 19550 Points ... More Details
3DMark 06:
0% 100%
min: 12328, avg: 13316, max: 14120 Points ... More Details
Cinebench R10: - Shading
0% 100%
min: 1919, avg: 1919, max: 1919 Points ... More Details
3DMark Vantage: - P Result 1280x1024
0% 100%
min: 8140, avg: 8268, max: 8396 Points ... More Details
- Range of benchmark values for this graphics card - Average benchmark values for this graphics cardBased on 8 benchmarks
| 3DMark 05 in comparison | ||
| Intel Graphics Media Accelerator (GMA) 500 (min) | 137 | |
| ... | ||
| NVIDIA GeForce 9800M GTX SLI | 16101 | |
| NVIDIA GeForce 9800M GTS | 16430 | |
| NVIDIA GeForce 9800M GTX | 16638 | |
| ATI Mobility Radeon HD 4870 X2 | 16940 | |
| NVIDIA GeForce 8800M GTX SLI | 16942 | |
| ATI FirePro M7740 | 17192 | |
| NVIDIA GeForce GTX 280M | 18343 | |
| ... | ||
| NVIDIA GeForce GTX 280M SLI (max) | 19268 | |
Game Benchmarks
For more games that might be playable and a list of all games and graphics cards visit our Gaming List
Gaming Benchmarks
The Czech website pctuning.cz have already published an extensive review of the Asus W90 with a Intel C2D T9600 and 6 GB RAM. The following gaming benchmarks stem from their review.
Test Drive Unlimited: 1920x1080, high: 47-72 fps -> fluently playable
Bioshock: 1920x1080, high: 67-207 (avg. 131) fps -> fluently playable
Call of Duty 5: 1920x1080, extra: 29-92 (avg. 53) fps -> fluently playable
Crysis Warhead: 1920x1080, Mainstream: 13-45 (avg. 32) fps -> fluently playable (single stutters)
Far Cry 2: 1920x1080, ultra: 21-55 (avg. 33) fps -> fluently playable
Flatout Ultimate Carnage: 1920x1080, high: 36-48 (avg. 43) fps -> fluently playable
Race Driver Grid: 1920x1080, high: 34-56 (avg. 43) fps -> fluently playable
Stalker Clear Sky: 1920x1080, Maximum: 16-39 (avg. 28) fps -> playable
Unreal Tournament 3: 1920x1080, max: 32-63 (avg. 51) fps -> fluently playable
World in Conflict: 1920x1080, high: 19-103 (avg 30) -> playable
Notebook reviews with ATI Mobility Radeon HD 4870 X2 graphics card
Asus W90Vp (Intel Core 2 Quad Q9000, 18.4")
» Review Asus W90VP Gaming Notebook - Review
» Asus W90Vp - External Review
