ATI Radeon HD 4670 vs NVIDIA GeForce 8400 GS PCI Rev. 2
Graphics Processor
| GPU model | RV730 | GT218 |
|---|---|---|
| GPU variant | RV730 XT (215-0719047) | — |
| Architecture | TeraScale | Tesla 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 55 nm | 40 nm |
| Number of transistors | 514 million | 260 million |
| Die size | 146 mm² | 57 mm² |
Graphics Card
| Release date | Sep 10th, 2008 | Apr 17th, 2007 |
|---|---|---|
| Generation | Radeon R700 | GeForce 8 |
| Production | End-of-life | End-of-life |
| Launch price | 67 USD | — |
| Interface | PCIe 2.0 x16 | PCI |
| Reviews | 49 in our database | 10 in our database |
| Predecessor | Radeon R600 | GeForce 7 PCIe |
| Successor | Evergreen | GeForce 9 |
Clocks
| GPU clock | 750 MHz | 520 MHz |
|---|---|---|
| Memory clock | 1000 MHz 2 Gbps effective | 500 MHz 1000 Mbps effective |
| Shader clock | — | 1230 MHz |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 32.00 GB/s | 8.000 GB/s |
Render Configuration
| Shading units | 320 | 16 |
|---|---|---|
| TMUs | 32 | 8 |
| ROPs | 8 | 4 |
| Compute units | 4 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 128 KB | 32 KB |
| SM count | — | 2 |
Performance
| Pixel rate | 6.000 GPixel/s | 2.080 GPixel/s |
|---|---|---|
| Texture rate | 24.00 GTexel/s | 4.160 GTexel/s |
| FP32 (float) performance | 480.0 GFLOPS | 39.36 GFLOPS |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 193 mm 7.6 inches | — |
| TDP | 59 W | 40 W |
| Suggested PSU | 250 W | 200 W |
| Outputs | 2x DVI1x S-Video | 1x DVI1x HDMI1x VGA |
| Power connectors | None | None |
| Board number | B666 | P873 |
API Support & Features
| DirectX | 10.1 (10_1) | 11.1 (10_1) |
|---|---|---|
| OpenGL | 3.3 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| Shader model | 4.1 | 4.1 |
| CUDA | — | 1.2 |
