AMD Radeon HD 8870 OEM vs Intel Iris Pro Graphics P6300
Processeur graphique
| Nom du GPU | Pitcairn | Broadwell GT3e |
|---|---|---|
| GPU variant | Pitcairn XT (215-0828047) | — |
| Architecture | GCN 1.0 | Generation 8.0 |
| Fonderie | TSMC | Intel |
| Taille du processus | 28 nm | 14 nm |
| Transistors | 2,800 million | unknown |
| Taille des matrices | 212 mm² | unknown |
Carte graphique
| Date de publication | Jan 8th, 2013 | — |
|---|---|---|
| Génération | Sea Islands | — |
| Production | End-of-life | — |
| Bus interface | PCIe 3.0 x16 | — |
| Prédécesseur | Southern Islands | — |
| Successeur | Volcanic Islands | — |
Vitesse clock
| GPU clock | 1000 MHz | — |
|---|---|---|
| Mémoire clock | 1200 MHz 4.8 Gbps effective | System Shared |
| Base clock | — | 300 MHz |
| Boost clock | — | 800 MHz |
Mémoire
| Taille de la mémoire | 2 GB | System Shared |
|---|---|---|
| Type de mémoire | GDDR5 | System Shared |
| Bus mémoire | 256 bit | System Shared |
| Bande passante | 153.6 GB/s | System Dependent |
Render Config
| Shading units | 1280 | 384 |
|---|---|---|
| TMUs | 80 | 48 |
| ROPs | 32 | 6 |
| Compute units | 20 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 512 KB | — |
| Unités d'exécution | — | 48 |
Performance théorique
| Taux de pixel | 32.00 GPixel/s | 4.800 GPixel/s |
|---|---|---|
| Taux de texture | 80.00 GTexel/s | 38.40 GTexel/s |
| FP32 (float) performance | 2.560 TFLOPS | 614.4 GFLOPS |
| FP64 (double) performance | 160.0 GFLOPS (1:16) | 153.6 GFLOPS (1:4) |
Board Design
| Taille Slot | Dual-slot | IGP |
|---|---|---|
| Longueur | 241 mm 9.5 inches | — |
| TDP | 175 W | 15 W |
| Suggestions pour le PSU | 450 W | — |
| Sorties | 1x DVI1x HDMI2x mini-DisplayPort | No outputs |
| Connecteurs de puissance | 2x 6-pin | — |
| Board number | C401 | — |
Caractéristiques graphiques
| DirectX | 12 (11_1) | 12 (11_1) |
|---|---|---|
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | 1.2 | 1.0 |
| Shader model | 5.1 | 5.1 |
AUTRES CARACTÉRISTIQUES
Carte graphique intégré
| Date de publication | — | Sep 5th, 2014 |
|---|---|---|
| Génération | — | HD Graphics-W (Broadwell) |
| Production | — | End-of-life |
| Bus interface | — | Ring Bus |
| Critiques | — | 1 in our database |
