ATI Radeon HD 4650 vs NVIDIA GeForce 7800 GT
Graphics Processor
| GPU model | RV730 | G70 |
|---|---|---|
| GPU variant | RV730 PRO (215-0719056) | GF-7800-GT-A2 |
| Architecture | TeraScale | Curie |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 110 nm |
| Number of transistors | 514 million | 302 million |
| Die size | 146 mm² | 333 mm² |
Graphics Card
| Release date | Sep 10th, 2008 | Aug 11th, 2005 |
|---|---|---|
| Generation | Radeon R700 | GeForce 7 PCIe |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 1.0 x16 |
| Reviews | 20 in our database | 206 in our database |
| Predecessor | Radeon R600 | GeForce 6 PCIe |
| Successor | Evergreen | GeForce 8 |
| Launch price | — | 449 USD |
Clocks
| GPU clock | 600 MHz | 400 MHz |
|---|---|---|
| Memory clock | 700 MHz 1400 Mbps effective | 500 MHz 1000 Mbps effective |
Memory Configuration
| Memory size | 256 MB | 256 MB |
|---|---|---|
| Memory type | GDDR3 | GDDR3 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 22.40 GB/s | 32.00 GB/s |
Render Configuration
| Shading units | 320 | — |
|---|---|---|
| TMUs | 32 | 20 |
| ROPs | 8 | 16 |
| Compute units | 4 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 128 KB | — |
| Pixel shaders | — | 20 |
| Vertex shaders | — | 7 |
Performance
| Pixel rate | 4.800 GPixel/s | 6.400 GPixel/s |
|---|---|---|
| Texture rate | 19.20 GTexel/s | 8.000 GTexel/s |
| FP32 (float) performance | 384.0 GFLOPS | — |
| Vertex rate | — | 700.0 MVertices/s |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 193 mm 7.6 inches | 226 mm 8.9 inches |
| TDP | 48 W | 65 W |
| Suggested PSU | 200 W | 250 W |
| Outputs | 2x DVI1x S-Video | 2x DVI1x S-Video |
| Width | — | 111 mm 4.4 inches |
| Power connectors | — | 1x 6-pin |
| Board number | — | P317 |
API Support & Features
| DirectX | 10.1 (10_1) | 9.0c (9_3) |
|---|---|---|
| OpenGL | 3.3 | 2.1 |
| OpenCL | 1.1 | — |
| Vulkan | — | — |
| Shader model | 4.1 | 3.0 |
