ATI Radeon HD 2900 XT vs NVIDIA GeForce GT 555M
Graphics Processor
| GPU model | R600 | GF106 |
|---|---|---|
| GPU variant | R600 XT (215RGMDKA13FG) | N12E-GE-B-A1 |
| Architecture | TeraScale | Fermi |
| Foundry | TSMC | TSMC |
| Manufacturing process | 80 nm | 40 nm |
| Number of transistors | 720 million | 1,170 million |
| Die size | 420 mm² | 238 mm² |
Graphics Card
| Release date | May 14th, 2007 | — |
|---|---|---|
| Generation | Radeon R600 | — |
| Production | End-of-life | — |
| Launch price | 399 USD | — |
| Interface | PCIe 1.0 x16 | — |
| Reviews | 63 in our database | — |
| Predecessor | Radeon R500 PCIe | — |
| Successor | Radeon R700 | — |
Clocks
| GPU clock | 743 MHz | 525 MHz |
|---|---|---|
| Memory clock | 828 MHz 1656 Mbps effective | 900 MHz 1800 Mbps effective |
| Shader clock | — | 1050 MHz |
Memory Configuration
| Memory size | 512 MB | 1024 MB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 512 bit | 128 bit |
| Bandwidth | 106.0 GB/s | 28.80 GB/s |
Render Configuration
| Shading units | 320 | 144 |
|---|---|---|
| TMUs | 16 | 24 |
| ROPs | 16 | 16 |
| Compute units | 4 | — |
| Cache L2 | 256 KB | 256 KB |
| SM count | — | 3 |
| Cache L1 | — | 64 KB (per SM) |
Performance
| Pixel rate | 11.89 GPixel/s | 3.150 GPixel/s |
|---|---|---|
| Texture rate | 11.89 GTexel/s | 12.60 GTexel/s |
| FP32 (float) performance | 475.5 GFLOPS | 302.4 GFLOPS |
| FP64 (double) performance | — | 25.20 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | Dual-slot | — |
|---|---|---|
| Length | 241 mm 9.5 inches | — |
| TDP | 215 W | 35 W |
| Suggested PSU | 550 W | — |
| Outputs | 2x DVI1x S-Video | No outputs |
| Power connectors | 1x 6-pin + 1x 8-pin | — |
| Board number | B006-01 | — |
API Support & Features
| DirectX | 10.0 (10_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 (full) 4.0 (partial) | 4.6 |
| OpenCL | — | 1.1 |
| Vulkan | — | — |
| Shader model | 4.0 | 5.1 |
| CUDA | — | 2.1 |
Other Features
Mobile graphics
| Release date | — | Oct 27th, 2011 |
|---|---|---|
| Generation | — | GeForce 500M |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Predecessor | — | GeForce 400M |
| Successor | — | GeForce 600M |
