ATI Radeon HD 4870 Mac Edition vs NVIDIA GeForce GTS 450 OEM
Processeur graphique
| Nom du GPU | RV770 | GF106 |
|---|---|---|
| GPU variant | RV770 XT Mac (215-0669080) | GF106-250-KB-A1 |
| Architecture | TeraScale | Fermi |
| Fonderie | TSMC | TSMC |
| Taille du processus | 55 nm | 40 nm |
| Transistors | 956 million | 1,170 million |
| Taille des matrices | 256 mm² | 238 mm² |
Carte graphique
| Date de publication | Jan 6th, 2009 | Oct 11th, 2010 |
|---|---|---|
| Génération | Radeon R700 | GeForce 400 |
| Production | End-of-life | End-of-life |
| Bus interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Critiques | 135 in our database | 80 in our database |
| Prédécesseur | Radeon R600 | GeForce 200 |
| Successeur | Evergreen | GeForce 500 |
Vitesse clock
| GPU clock | 750 MHz | 790 MHz |
|---|---|---|
| Mémoire clock | 850 MHz 3.4 Gbps effective | 1000 MHz 4 Gbps effective |
| Shader clock | — | 1580 MHz |
Mémoire
| Taille de la mémoire | 512 MB | 1536 MB |
|---|---|---|
| Type de mémoire | GDDR5 | GDDR5 |
| Bus mémoire | 256 bit | 192 bit |
| Bande passante | 108.8 GB/s | 96.00 GB/s |
Render Config
| Shading units | 800 | 144 |
|---|---|---|
| TMUs | 40 | 24 |
| ROPs | 16 | 24 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 256 KB | 384 KB |
| Comptage SM | — | 3 |
Performance théorique
| Taux de pixel | 12.00 GPixel/s | 4.740 GPixel/s |
|---|---|---|
| Taux de texture | 30.00 GTexel/s | 18.96 GTexel/s |
| FP32 (float) performance | 1,200 GFLOPS | 455.0 GFLOPS |
| FP64 (double) performance | 240.0 GFLOPS (1:5) | 37.92 GFLOPS (1:12) |
Board Design
| Taille Slot | Dual-slot | Dual-slot |
|---|---|---|
| Longueur | 250 mm 9.8 inches | 210 mm 8.3 inches |
| TDP | 150 W | 106 W |
| Suggestions pour le PSU | 450 W | 300 W |
| Sorties | 1x DVI1x mini-DisplayPort | 2x DVI1x mini-HDMI |
| Connecteurs de puissance | 2x 6-pin | 1x 6-pin |
| Board number | B771 | P1060 |
Caractéristiques graphiques
| DirectX | 10.1 (10_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| Shader model | 4.1 | 5.1 |
| CUDA | — | 2.1 |
