AMD Radeon HD 6870 vs NVIDIA GeForce GT 140 OEM
Graphics Processor
| GPU model | Barts | G94B |
|---|---|---|
| GPU variant | Barts XT (215-0798000) | — |
| Architecture | TeraScale 2 | Tesla |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 55 nm |
| Number of transistors | 1,700 million | 505 million |
| Die size | 255 mm² | 196 mm² |
Graphics Card
| Release date | Oct 21st, 2010 | Mar 10th, 2009 |
|---|---|---|
| Generation | Northern Islands | GeForce 100 |
| Production | End-of-life | End-of-life |
| Launch price | 239 USD | — |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Reviews | 170 in our database | — |
| Predecessor | Evergreen | GeForce 9 |
| Successor | Southern Islands | GeForce 200 |
Clocks
| GPU clock | 900 MHz | 650 MHz |
|---|---|---|
| Memory clock | 1050 MHz 4.2 Gbps effective | 900 MHz 1800 Mbps effective |
| Shader clock | — | 1625 MHz |
Memory Configuration
| Memory size | 1024 MB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR3 |
| Memory bus width | 256 bit | 256 bit |
| Bandwidth | 134.4 GB/s | 57.60 GB/s |
Render Configuration
| Shading units | 1120 | 64 |
|---|---|---|
| TMUs | 56 | 32 |
| ROPs | 32 | 16 |
| Compute units | 14 | — |
| Cache L1 | 8 KB (per CU) | — |
| Cache L2 | 512 KB | 64 KB |
| SM count | — | 8 |
Performance
| Pixel rate | 28.80 GPixel/s | 10.40 GPixel/s |
|---|---|---|
| Texture rate | 50.40 GTexel/s | 20.80 GTexel/s |
| FP32 (float) performance | 2.016 TFLOPS | 208.0 GFLOPS |
Dimensions & Outputs
| Slot width | Dual-slot | Single-slot |
|---|---|---|
| Length | 247 mm 9.7 inches | 229 mm 9 inches |
| Width | 111 mm 4.4 inches | — |
| Height | 36 mm 1.4 inches | — |
| TDP | 151 W | 105 W |
| Suggested PSU | 450 W | 300 W |
| Outputs | 2x DVI1x HDMI2x mini-DisplayPort | 2x DVI1x S-Video |
| Power connectors | 2x 6-pin | 1x 6-pin |
| Board number | C222 | P545 |
API Support & Features
| DirectX | 11.2 (11_0) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 4.4 | 3.3 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | — | — |
| Shader model | 5.0 | 4.0 |
| CUDA | — | 1.1 |
