ATI Radeon HD 4870 X2 vs NVIDIA GeForce GT 340 OEM
Processeur graphique
| Nom du GPU | R700 | GT215 |
|---|---|---|
| GPU variant | R700 XT (215-0669045) | GT215-301-A3 |
| Architecture | TeraScale | Tesla 2.0 |
| Fonderie | TSMC | TSMC |
| Taille du processus | 55 nm | 40 nm |
| Transistors | 956 million | 727 million |
| Taille des matrices | 256 mm² | 144 mm² |
Carte graphique
| Date de publication | Aug 12th, 2008 | Feb 2nd, 2010 |
|---|---|---|
| Génération | Radeon R700 | GeForce 300 |
| Production | End-of-life | End-of-life |
| Prix de lancement | 550 USD | — |
| Bus interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Critiques | 79 in our database | — |
| Prédécesseur | Radeon R600 | GeForce 200 |
| Successeur | Evergreen | GeForce 400 |
Vitesse clock
| GPU clock | 750 MHz | 550 MHz |
|---|---|---|
| Mémoire clock | 900 MHz 3.6 Gbps effective | 850 MHz 1700 Mbps effective |
| Shader clock | — | 1340 MHz |
Mémoire
| Taille de la mémoire | 1024 MB | 1024 MB |
|---|---|---|
| Type de mémoire | GDDR5 | GDDR3 |
| Bus mémoire | 256 bit | 128 bit |
| Bande passante | 115.2 GB/s | 27.20 GB/s |
Render Config
| Shading units | 800 | 96 |
|---|---|---|
| TMUs | 40 | 32 |
| ROPs | 16 | 8 |
| Compute units | 10 | — |
| Cache L1 | 16 KB (per CU) | — |
| Cache L2 | 256 KB | 64 KB |
| Comptage SM | — | 12 |
Performance théorique
| Taux de pixel | 12.00 GPixel/s | 4.400 GPixel/s |
|---|---|---|
| Taux de texture | 30.00 GTexel/s | 17.60 GTexel/s |
| FP32 (float) performance | 1,200 GFLOPS | 257.3 GFLOPS |
| FP64 (double) performance | 240.0 GFLOPS (1:5) | — |
Board Design
| Taille Slot | Dual-slot | Single-slot |
|---|---|---|
| Longueur | 267 mm 10.5 inches | 168 mm 6.6 inches |
| Taille | 111 mm 4.4 inches | — |
| Taille | 38 mm 1.5 inches | — |
| TDP | 286 W | 69 W |
| Suggestions pour le PSU | 600 W | 250 W |
| Sorties | 2x DVI1x S-Video | 1x DVI1x HDMI1x VGA |
| Connecteurs de puissance | 1x 6-pin + 1x 8-pin | None |
| Board number | B509-37 | P672 |
Caractéristiques graphiques
| DirectX | 10.1 (10_1) | 11.1 (10_1) |
|---|---|---|
| OpenGL | 3.3 | 3.3 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| Shader model | 4.1 | 4.1 |
| CUDA | — | 1.2 |
