ATI Radeon HD 4830 vs NVIDIA GeForce 8800 GT
Graphics Processor
| GPU model | RV770 | G92 |
|---|---|---|
| GPU variant | RV770 LE (215-0669075) | G92-270-A2 |
| Architecture | TeraScale | Tesla |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 65 nm |
| Number of transistors | 956 million | 754 million |
| Die size | 256 mm² | 324 mm² |
Graphics Card
| Release date | Oct 21st, 2008 | Oct 29th, 2007 |
|---|---|---|
| Generation | Radeon R700 | GeForce 8 |
| Production | End-of-life | End-of-life |
| Launch price | 130 USD | 349 USD |
| Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Reviews | 43 in our database | 403 in our database |
| Predecessor | Radeon R600 | GeForce 7 PCIe |
| Successor | Evergreen | GeForce 9 |
Clocks
| GPU clock | 575 MHz | 600 MHz |
|---|---|---|
| Memory clock | 900 MHz 1800 Mbps effective | 900 MHz 1800 Mbps effective |
| Shader clock | — | 1500 MHz |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR3 | GDDR3 |
| Memory bus width | 256 bit | 256 bit |
| Bandwidth | 57.60 GB/s | 57.60 GB/s |
Render Configuration
| Shading units | 640 | 112 |
|---|---|---|
| TMUs | 32 | 56 |
| ROPs | 16 | 16 |
| Compute units | 8 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 256 KB | 64 KB |
| SM count | — | 14 |
Performance
| Pixel rate | 9.200 GPixel/s | 9.600 GPixel/s |
|---|---|---|
| Texture rate | 18.40 GTexel/s | 33.60 GTexel/s |
| FP32 (float) performance | 736.0 GFLOPS | 336.0 GFLOPS |
| FP64 (double) performance | 147.2 GFLOPS (1:5) | — |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 246 mm 9.7 inches | 229 mm 9 inches |
| Width | 111 mm 4.4 inches | — |
| Height | 20 mm 0.8 inches | — |
| TDP | 95 W | 125 W |
| Suggested PSU | 250 W | 300 W |
| Outputs | 2x DVI1x S-Video | 2x DVI1x S-Video |
| Power connectors | 1x 6-pin | 1x 6-pin |
| Board number | B501-31 | P393 |
API Support & Features
| DirectX | 10.1 (10_1) | 11.1 (10_0) |
|---|---|---|
| OpenGL | 3.3 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| Shader model | 4.1 | 4.0 |
| CUDA | — | 1.1 |
