ATI Radeon HD 4670 X2 vs NVIDIA GeForce 7900 GTX
Processeur graphique
| Nom du GPU | RV730 | G71 |
|---|---|---|
| GPU variant | RV730 XT (215-0719047) | G71-U-N-A2 |
| Architecture | TeraScale | Curie |
| Fonderie | TSMC | TSMC |
| Taille du processus | 55 nm | 90 nm |
| Transistors | 514 million | 278 million |
| Taille des matrices | 146 mm² | 196 mm² |
Carte graphique
| Date de publication | Sep 10th, 2008 | Mar 9th, 2006 |
|---|---|---|
| Génération | Radeon R700 | GeForce 7 PCIe |
| Production | End-of-life | End-of-life |
| Bus interface | PCIe 2.0 x16 | PCIe 1.0 x16 |
| Critiques | 49 in our database | 145 in our database |
| Prédécesseur | Radeon R600 | GeForce 6 PCIe |
| Successeur | Evergreen | GeForce 8 |
Vitesse clock
| GPU clock | 750 MHz | 650 MHz |
|---|---|---|
| Mémoire clock | 700 MHz 1400 Mbps effective | 800 MHz 1600 Mbps effective |
Mémoire
| Taille de la mémoire | 512 MB | 512 MB |
|---|---|---|
| Type de mémoire | GDDR3 | GDDR3 |
| Bus mémoire | 128 bit | 256 bit |
| Bande passante | 22.40 GB/s | 51.20 GB/s |
Render Config
| Shading units | 320 | — |
|---|---|---|
| TMUs | 32 | 24 |
| ROPs | 8 | 16 |
| Compute units | 4 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 128 KB | — |
| Pixel shaders | — | 24 |
| Vertex shaders | — | 8 |
Performance théorique
| Taux de pixel | 6.000 GPixel/s | 10.40 GPixel/s |
|---|---|---|
| Taux de texture | 24.00 GTexel/s | 15.60 GTexel/s |
| FP32 (float) performance | 480.0 GFLOPS | — |
| Vertex rate | — | 1.300 GVertices/s |
Board Design
| Taille Slot | Dual-slot | Single-slot |
|---|---|---|
| TDP | 118 W | 84 W |
| Suggestions pour le PSU | 300 W | 250 W |
| Sorties | 4x DVI | 2x DVI1x S-Video |
| Connecteurs de puissance | 1x 6-pin | 1x 6-pin |
| Board number | — | P348 |
Caractéristiques graphiques
| DirectX | 10.1 (10_1) | 9.0c (9_3) |
|---|---|---|
| OpenGL | 3.3 | 2.1 |
| OpenCL | 1.1 | — |
| Vulkan | — | — |
| Shader model | 4.1 | 3.0 |
