| Attribute | Value |
| GPU |
| Release year | 2008 year |
| Reference card | Add |
| GPU brand | ATI |
| GPU name | M88 |
| Market | Laptop |
| Clock speed | 660 MHz |
| Turbo clock speed | Add |
| Is dual GPU | - |
| Model | Mobility Radeon HD 3870 |
| Memory |
| Memory | 512 MB |
| Memory bandwidth | 54.4 GB/s |
| Memory bus | 256 bit |
| Memory type | GDDR3 |
| Memory clock speed | 850 MHz |
| Effective memory clock speed | 1,700 MHz |
| Noise and power |
| TDP | 55 W |
| Load power consumption | 253 W |
| Idle power consumption | 115 W |
| Load noise level | 42.3 dB |
| Idle noise level | 39.9 dB |
| Raw performance |
| Pixel rate | 10.56 GPixel/s |
| SMX units | Add |
| Render output processors | 16 |
| Texture mapping units | 16 |
| Shading units | 320 |
| Floating-point performance | 422 GFLOPS |
| Compute units | 4 |
| Texture rate | 10.56 GTexel/s |
| Benchmarks |
| Metro: Last Light | Add |
| Civilization 5 | Add |
| FarCry 3 | Add |
| Battlefield 3 | Add |
| Particle simulation | Add |
| T-Rex (Compubench 1.5) | Add |
| Video composition | Add |
| Crysis 3 | Add |
| PassMark | 728 |
| PassMark Direct Compute | Add |
| 3DMark 11 Graphics | Add |
| 3DMark Vantage Graphics | Add |
| Dirt3 | Add |
| CLBenchmark Raytrace | Add |
| Dead Space 3 | Add |
| 3DMark06 | Add |
| 3DMark Vantage (Texture Fill) | 12.69 |
| Battleforge | Add |
| Hawx | Add |
| SmallLux GPU 2.0d4 | Add |
| SmallLux GPU 1.7Beta | Add |
| Unigine: Heaven 4.0 | Add |
| Hitman: Absolution | Add |
| Call of Duty: Modern Warfare 3 | Add |
| Bioshock Infinite | Add |
| Crysis: Warhead (2013) | Add |
| Batman: Arkham City | Add |
| Far Cry 3 | Add |
| Crysis 2 | Add |
| Cloud Gate Factor | Add |
| Diablo III | Add |
| Battlefield 4 | Add |
| Face detection | Add |
| T-Rex (GFXBench 3.0) | Add |
| Manhattan (GFXBench 3.0) | Add |
| Bitcoin mining | Add |
| Sky Diver Factor | Add |
| Thief | Add |
| Fire Strike Factor | Add |
| Ocean surface simulation | Add |