AMD Radeon HD 8870M vs NVIDIA GeForce GTX 555 OEM
Graphics Processor
| GPU model | Venus | GF114 |
|---|---|---|
| GPU variant | Venus XT | GF114-200-KB-A1 |
| Architecture | GCN 1.0 | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 40 nm |
| Number of transistors | 1,500 million | 1,950 million |
| Die size | 123 mm² | 332 mm² |
Mobile graphics
| Release date | Apr 1st, 2013 | — |
|---|---|---|
| Generation | Solar System (HD 8800M) | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x16 | — |
| Predecessor | London | — |
| Successor | Crystal System | — |
Clocks
| Base clock | 725 MHz | — |
|---|---|---|
| Boost clock | 775 MHz | — |
| Memory clock | 1125 MHz 4.5 Gbps effective | 957 MHz 3.8 Gbps effective |
| GPU clock | — | 736 MHz |
| Shader clock | — | 1472 MHz |
Memory Configuration
| Memory size | 2 GB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 192 bit |
| Bandwidth | 72.00 GB/s | 91.87 GB/s |
Render Configuration
| Shading units | 640 | 288 |
|---|---|---|
| TMUs | 40 | 48 |
| ROPs | 16 | 24 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 256 KB | 384 KB |
| SM count | — | 6 |
Performance
| Pixel rate | 12.40 GPixel/s | 8.832 GPixel/s |
|---|---|---|
| Texture rate | 31.00 GTexel/s | 35.33 GTexel/s |
| FP32 (float) performance | 992.0 GFLOPS | 847.9 GFLOPS |
| FP64 (double) performance | 62.00 GFLOPS (1:16) | 70.66 GFLOPS (1:12) |
Dimensions & Outputs
| TDP | unknown | 150 W |
|---|---|---|
| Outputs | No outputs | 2x DVI1x mini-HDMI |
| Slot width | — | Dual-slot |
| Length | — | 210 mm 8.3 inches |
| Suggested PSU | — | 450 W |
| Power connectors | — | 2x 6-pin |
| Board number | — | P1041 |
API Support & Features
| DirectX | 12 (11_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | 1.2 | — |
| Shader model | 5.1 | 5.1 |
| CUDA | — | 2.1 |
Other Features
Graphics Card
| Release date | — | May 14th, 2011 |
|---|---|---|
| Generation | — | GeForce 500 |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Predecessor | — | GeForce 400 |
| Successor | — | GeForce 600 |
