AMD Radeon HD 6970 X2 vs NVIDIA GeForce GTX 675MX Mac Edition
Graphics Processor
| GPU model | Antilles | GK104 |
|---|---|---|
| GPU variant | Antilles XT (215-0807027) | N13E-GSR-A2 |
| Architecture | TeraScale 3 | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 28 nm |
| Number of transistors | 2,640 million | 3,540 million |
| Die size | 389 mm² | 294 mm² |
Graphics Card
| Release date | Never Released | — |
|---|---|---|
| Generation | Northern Islands | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Predecessor | Evergreen | — |
| Successor | Southern Islands | — |
Clocks
| GPU clock | 880 MHz | 719 MHz |
|---|---|---|
| Memory clock | 1375 MHz 5.5 Gbps effective | 1250 MHz 5 Gbps effective |
Memory Configuration
| Memory size | 2 GB | 1024 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 256 bit | 256 bit |
| Bandwidth | 176.0 GB/s | 160.0 GB/s |
Render Configuration
| Shading units | 1536 | 1344 |
|---|---|---|
| TMUs | 96 | 112 |
| ROPs | 32 | 32 |
| Compute units | 24 | — |
| Cache L1 | 8 KB (per CU) | 16 KB (per SMX) |
| Cache L2 | 512 KB | 512 KB |
| SMX count | — | 7 |
Performance
| Pixel rate | 28.16 GPixel/s | 20.13 GPixel/s |
|---|---|---|
| Texture rate | 84.48 GTexel/s | 80.53 GTexel/s |
| FP32 (float) performance | 2.703 TFLOPS | 1.933 TFLOPS |
| FP64 (double) performance | — | 80.53 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | — |
|---|---|---|
| TDP | 375 W | 100 W |
| Suggested PSU | 750 W | — |
| Outputs | 2x DVI1x HDMI2x mini-DisplayPort | No outputs |
| Power connectors | 3x 8-pin | — |
API Support & Features
| DirectX | 11.2 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | — | 1.1 |
| Shader model | 5.0 | 5.1 |
| CUDA | — | 3.0 |
Other Features
Mobile graphics
| Release date | — | Apr 1st, 2013 |
|---|---|---|
| Generation | — | GeForce 600M |
| Production | — | End-of-life |
| Interface | — | PCIe 3.0 x16 |
| Predecessor | — | GeForce 500M |
| Successor | — | GeForce 700M |
