AMD Radeon R7 250 vs AMD Radeon R7 250X
Processeur graphique
| Nom du GPU | Cape Verde | Cape Verde |
|---|---|---|
| GPU variant | Cape Verde PRO | Cape Verde XT |
| Architecture | GCN 1.0 | GCN 1.0 |
| Fonderie | TSMC | TSMC |
| Taille du processus | 28 nm | 28 nm |
| Transistors | 1,500 million | 1,500 million |
| Taille des matrices | 123 mm² | 123 mm² |
Carte graphique
| Date de publication | Oct 8th, 2013 | Feb 13th, 2014 |
|---|---|---|
| Génération | Volcanic Islands | Volcanic Islands |
| Production | End-of-life | End-of-life |
| Bus interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Prédécesseur | Sea Islands | Sea Islands |
| Successeur | Pirate Islands | Pirate Islands |
| Prix de lancement | — | 99 USD |
Vitesse clock
| GPU clock | 700 MHz | 950 MHz |
|---|---|---|
| Mémoire clock | 900 MHz 1800 Mbps effective | 1125 MHz 4.5 Gbps effective |
Mémoire
| Taille de la mémoire | 1024 MB | 1024 MB |
|---|---|---|
| Type de mémoire | DDR3 | GDDR5 |
| Bus mémoire | 128 bit | 128 bit |
| Bande passante | 28.80 GB/s | 72.00 GB/s |
Render Config
| Shading units | 512 | 640 |
|---|---|---|
| TMUs | 32 | 40 |
| ROPs | 16 | 16 |
| Compute units | 8 | 10 |
| Cache L1 | 16 KB (per CU) | 16 KB (per CU) |
| Cache L2 | 256 KB | 256 KB |
Performance théorique
| Taux de pixel | 11.20 GPixel/s | 15.20 GPixel/s |
|---|---|---|
| Taux de texture | 22.40 GTexel/s | 38.00 GTexel/s |
| FP32 (float) performance | 716.8 GFLOPS | 1,216 GFLOPS |
| FP64 (double) performance | 44.80 GFLOPS (1:16) | 76.00 GFLOPS (1:16) |
Board Design
| Taille Slot | Single-slot | Dual-slot |
|---|---|---|
| Longueur | 168 mm 6.6 inches | 210 mm 8.3 inches |
| TDP | 55 W | 80 W |
| Suggestions pour le PSU | 250 W | 250 W |
| Sorties | 1x DVI1x HDMI1x DisplayPort | 1x DVI1x HDMI2x mini-DisplayPort |
| Connecteurs de puissance | None | 1x 6-pin |
| Board number | — | C441, C698 |
Caractéristiques graphiques
| DirectX | 12 (11_1) | 12 (11_1) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2 | 1.2 |
| Shader model | 5.1 | 5.1 |
