ATI Radeon 9800 XT Mac Edition vs ATI Radeon HD 4850
Processeur graphique
| Nom du GPU | R360 | RV770 |
|---|---|---|
| GPU variant | R360 (215R9RBKA11F) | RV770 PRO (215-0669065) |
| Architecture | Rage 9 | TeraScale |
| Fonderie | TSMC | TSMC |
| Taille du processus | 150 nm | 55 nm |
| Transistors | 117 million | 956 million |
| Taille des matrices | 218 mm² | 256 mm² |
Carte graphique
| Date de publication | Mar 14th, 2004 | Jun 25th, 2008 |
|---|---|---|
| Génération | Radeon R300 | Radeon R700 |
| Production | End-of-life | End-of-life |
| Bus interface | AGP Pro 8x | PCIe 2.0 x16 |
| Critiques | 20 in our database | 127 in our database |
| Prédécesseur | Radeon R200 | Radeon R600 |
| Successeur | Radeon R400 AGP | Evergreen |
| Prix de lancement | — | 199 USD |
Vitesse clock
| GPU clock | 412 MHz | 625 MHz |
|---|---|---|
| Mémoire clock | 365 MHz 730 Mbps effective | 993 MHz 1986 Mbps effective |
Mémoire
| Taille de la mémoire | 256 MB | 512 MB |
|---|---|---|
| Type de mémoire | DDR | GDDR3 |
| Bus mémoire | 256 bit | 256 bit |
| Bande passante | 23.36 GB/s | 63.55 GB/s |
Render Config
| Pixel shaders | 8 | — |
|---|---|---|
| Vertex shaders | 4 | — |
| TMUs | 8 | 40 |
| ROPs | 8 | 16 |
| Shading units | — | 800 |
| Compute units | — | 10 |
| Cache L1 | — | 16 KB (per CU) |
| Cache L2 | — | 256 KB |
Performance théorique
| Taux de pixel | 3.296 GPixel/s | 10.00 GPixel/s |
|---|---|---|
| Vertex rate | 412.0 MVertices/s | — |
| Taux de texture | 3.296 GTexel/s | 25.00 GTexel/s |
| FP32 (float) performance | — | 1,000 GFLOPS |
| FP64 (double) performance | — | 200.0 GFLOPS (1:5) |
Board Design
| Taille Slot | Single-slot | Single-slot |
|---|---|---|
| TDP | 60 W | 110 W |
| Suggestions pour le PSU | 250 W | 300 W |
| Sorties | 2x DVI | 2x DVI1x S-Video |
| Connecteurs de puissance | None | 1x 6-pin |
| Longueur | — | 246 mm 9.7 inches |
| Board number | — | B501-31 |
Caractéristiques graphiques
| DirectX | 9.0 | 10.1 (10_1) |
|---|---|---|
| OpenGL | 2.0 | 3.3 |
| OpenCL | — | 1.1 |
| Vulkan | — | — |
| Pixel shader | 2.0 | — |
| Vertex shader | 2.0 | — |
| Shader model | — | 4.1 |
