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Benchmarks Real world tests of the Mobility Radeon HD 3870 X2
PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark
Features Key features of the Mobility Radeon HD 3870 X2
memory bandwidth Rate at which data can be read from or stored in onboard memory
pixel rate Number of pixels a graphics card can render to the screen every second
texture rate Speed at which a graphics card can perform texture mapping
floating point performance How fast the gpu can crunch numbers
shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading
texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes
Specifications Full list of technical specs
gpu
| GPU brand | ATI |
|---|---|
| GPU name | M88 |
| Market | Laptop |
| Clock speed | 660 MHz |
| Is dual GPU | Yes |
| Reference card | None |
raw performance
| Shading units | 640 |
|---|---|
| Texture mapping units | 32 |
| Render output processors | 32 |
| Compute units | 8 |
| Pixel rate | 21.12 GPixel/s |
| Texture rate | 21.12 GTexel/s |
| Floating-point performance | 844.8 GFLOPS |
memory
| Memory clock speed | 850 MHz |
|---|---|
| Effective memory clock speed | 1,700 MHz |
| Memory bus | 512 bit |
| Memory | 1,024 MB |
| Memory type | GDDR3 |
| Memory bandwidth | 108.8 GB/s |
noise and power
| TDP | 110W |
|---|
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Competitors
 | Nvidia GeForce GTX 645
|
 | AMD Radeon HD 8750M
|
 | ATi Mobility Radeon HD 4850
|
 | Nvidia GeForce GTX 280M
|
 | ATi Mobility Radeon HD 4670
|
 | ATi Mobility Radeon HD 4650
|
 | ATi Mobility Radeon HD 4570
|
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