AMD Radeon R9 270 1024SP vs NVIDIA GeForce GTX 660 Rev. 2
Processeur graphique
| Nom du GPU | Pitcairn | GK104 |
|---|---|---|
| GPU variant | Pitcairn PRO (215-0828062) | — |
| Architecture | GCN 1.0 | Kepler |
| Fonderie | TSMC | TSMC |
| Taille du processus | 28 nm | 28 nm |
| Transistors | 2,800 million | 3,540 million |
| Taille des matrices | 212 mm² | 294 mm² |
Carte graphique
| Date de publication | Mar 13th, 2015 | Sep 13th, 2014 |
|---|---|---|
| Génération | Volcanic Islands | GeForce 600 |
| Production | End-of-life | End-of-life |
| Bus interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Critiques | 32 in our database | 77 in our database |
| Prédécesseur | Sea Islands | GeForce 500 |
| Successeur | Pirate Islands | GeForce 700 |
Vitesse clock
| Base clock | 900 MHz | 980 MHz |
|---|---|---|
| Boost clock | 925 MHz | 1032 MHz |
| Mémoire clock | 1200 MHz 4.8 Gbps effective | 1502 MHz 6 Gbps effective |
Mémoire
| Taille de la mémoire | 2 GB | 2 GB |
|---|---|---|
| Type de mémoire | GDDR5 | GDDR5 |
| Bus mémoire | 256 bit | 192 bit |
| Bande passante | 153.6 GB/s | 144.2 GB/s |
Render Config
| Shading units | 1024 | 960 |
|---|---|---|
| TMUs | 64 | 80 |
| ROPs | 32 | 24 |
| Compute units | 16 | — |
| Cache L1 | 16 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 512 KB | 384 KB |
| Comptage SMX | — | 5 |
Performance théorique
| Taux de pixel | 29.60 GPixel/s | 20.64 GPixel/s |
|---|---|---|
| Taux de texture | 59.20 GTexel/s | 82.56 GTexel/s |
| FP32 (float) performance | 1.894 TFLOPS | 1.981 TFLOPS |
| FP64 (double) performance | 118.4 GFLOPS (1:16) | 82.56 GFLOPS (1:24) |
Board Design
| Taille Slot | Dual-slot | Dual-slot |
|---|---|---|
| TDP | 150 W | 140 W |
| Suggestions pour le PSU | 450 W | 300 W |
| Sorties | 2x DVI1x HDMI1x DisplayPort | 2x DVI1x HDMI1x DisplayPort |
| Connecteurs de puissance | 1x 6-pin | 1x 6-pin |
| Board number | C403 | P2004 SKU 11 |
| Longueur | — | 241 mm 9.5 inches |
Caractéristiques graphiques
| DirectX | 12 (11_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| Shader model | 5.1 | 5.1 |
| CUDA | — | 3.0 |
