ATI Radeon HD 4650 vs NVIDIA GeForce 7800 GT Dual
Processeur graphique
| Nom du GPU | RV730 | G70 |
|---|---|---|
| GPU variant | RV730 PRO (215-0719056) | GF-7800-GT-A2 |
| Architecture | TeraScale | Curie |
| Fonderie | TSMC | TSMC |
| Taille du processus | 55 nm | 110 nm |
| Transistors | 514 million | 302 million |
| Taille des matrices | 146 mm² | 333 mm² |
Carte graphique
| Date de publication | Sep 10th, 2008 | Aug 11th, 2005 |
|---|---|---|
| Génération | Radeon R700 | GeForce 7 PCIe |
| Production | End-of-life | End-of-life |
| Bus interface | PCIe 2.0 x16 | PCIe 1.0 x16 |
| Critiques | 20 in our database | 206 in our database |
| Prédécesseur | Radeon R600 | GeForce 6 PCIe |
| Successeur | Evergreen | GeForce 8 |
Vitesse clock
| GPU clock | 600 MHz | 400 MHz |
|---|---|---|
| Mémoire clock | 700 MHz 1400 Mbps effective | 500 MHz 1000 Mbps effective |
Mémoire
| Taille de la mémoire | 256 MB | 256 MB |
|---|---|---|
| Type de mémoire | GDDR3 | GDDR3 |
| Bus mémoire | 128 bit | 256 bit |
| Bande passante | 22.40 GB/s | 32.00 GB/s |
Render Config
| 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 théorique
| Taux de pixel | 4.800 GPixel/s | 6.400 GPixel/s |
|---|---|---|
| Taux de texture | 19.20 GTexel/s | 8.000 GTexel/s |
| FP32 (float) performance | 384.0 GFLOPS | — |
| Vertex rate | — | 700.0 MVertices/s |
Board Design
| Taille Slot | Single-slot | Dual-slot |
|---|---|---|
| Longueur | 193 mm 7.6 inches | — |
| TDP | 48 W | unknown |
| Suggestions pour le PSU | 200 W | 200 W |
| Sorties | 2x DVI1x S-Video | 2x DVI2x VGA1x S-Video |
| Connecteurs de puissance | — | 1x 6-pin |
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 |
