AMD Radeon HD 6490M Mac Edition vs NVIDIA GeForce GT 620M
Processeur graphique
| Nom du GPU | Seymour | GF108 |
|---|---|---|
| GPU variant | Seymour XTX (216-0810005) | N13P-GLP-A1 |
| Architecture | TeraScale 2 | Fermi |
| Fonderie | TSMC | TSMC |
| Taille du processus | 40 nm | 40 nm |
| Transistors | 370 million | 585 million |
| Taille des matrices | 67 mm² | 116 mm² |
Graphiques mobiles
| Date de publication | May 2nd, 2011 | Aug 23rd, 2012 |
|---|---|---|
| Génération | Vancouver (HD 6400M) | GeForce 600M |
| Production | End-of-life | End-of-life |
| Bus interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Prédécesseur | Manhattan | GeForce 500M |
| Successeur | London | GeForce 700M |
Vitesse clock
| GPU clock | 750 MHz | 660 MHz |
|---|---|---|
| Mémoire clock | 794 MHz 3.2 Gbps effective | 900 MHz 1800 Mbps effective |
| Shader clock | — | 1320 MHz |
Mémoire
| Taille de la mémoire | 256 MB | 1024 MB |
|---|---|---|
| Type de mémoire | GDDR5 | DDR3 |
| Bus mémoire | 64 bit | 128 bit |
| Bande passante | 25.41 GB/s | 28.80 GB/s |
Render Config
| Shading units | 160 | 96 |
|---|---|---|
| TMUs | 8 | 16 |
| ROPs | 4 | 4 |
| Compute units | 2 | — |
| Cache L1 | 8 KB (per CU) | 64 KB (per SM) |
| Cache L2 | 128 KB | 256 KB |
| Comptage SM | — | 2 |
Performance théorique
| Taux de pixel | 3.000 GPixel/s | 2.640 GPixel/s |
|---|---|---|
| Taux de texture | 6.000 GTexel/s | 10.56 GTexel/s |
| FP32 (float) performance | 240.0 GFLOPS | 253.4 GFLOPS |
| FP64 (double) performance | — | 21.12 GFLOPS (1:12) |
Board Design
| TDP | unknown | 15 W |
|---|---|---|
| Sorties | No outputs | No outputs |
Caractéristiques graphiques
| DirectX | 11.2 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.1 |
| Vulkan | — | — |
| Shader model | 5.0 | 5.1 |
| CUDA | — | 2.1 |
