AMD Radeon HD 6750M Mac MXM vs NVIDIA GeForce GT 640M Mac Full Specs
480 Shaders 598MHz | 384 Shaders 625MHz |
256MB GDDR550.8GB/s | 512MB GDDR564GB/s |
·· 574.1 GFLOPS | ·· 480 GFLOPS |
Form Factor MXM-A | Form Factor Soldered |
TDP 35W | TDP 32W |
Clock Speed ·· | Clock Speed ·· |
Peak OPS 574.1 GFLOPSFP32 | Peak OPS 480 GFLOPSFP32 |
FP32 574.1 GFLOPS | FP32 480 GFLOPS |
- | FP64 20 GFLOPS |
Pixel Rate 4.8 GPixel/s | Pixel Rate 10 GPixel/s |
Texture Rate 14.3 GTexel/s | Texture Rate 20 GTexel/s |
Shaders 480 Shaders | Shaders 384 Shaders |
TMUs 24 TMUs | TMUs 32 TMUs |
ROPs 8 ROPs | ROPs 16 ROPs |
CUs 6 CUs | SMs 2 SMs |
Boost Clock 598MHz | Boost Clock 625MHz |
L1 8KB/CU | L1 48KB/SM Tex |
L2 Cache 256KB shared | L2 Cache 256KB shared |
256MB GDDR5 | 512MB GDDR5 |
Memory Bus 128-bit | Memory Bus 128-bit |
Memory Speed 3.2GT/s | Memory Speed 4GT/s |
Memory Bandwidth 50.8GB/s | Memory Bandwidth 64GB/s |
ECC No | ECC No |
TDP 35W | TDP 32W |
Max Resolution 2560x1600 | Max Resolution 4096x2304 |
Refresh Rate Calculator 2560x1440 Resolution1440p QHD Refresh Rate 66Hz | Refresh Rate Calculator 3840x2160 Resolution4K UHD Refresh Rate 34Hz |
Multi-Monitor 2 | Multi-Monitor 3 |
Adaptive Sync - | Adaptive Sync G-Sync FreeSync |
DSC Not Supported | DSC Not Supported |
Shader Model 5 | Shader Model 6.5 |
DirectX DirectX 11Direct3D 11_0 | DirectX DirectX 12Direct3D 11_0 |
OpenGL 4.5OpenCL 1.2Vulkan - | OpenGL 4.6OpenCL 3Vulkan 1.2 |
CUDA -GFX 4PureVideo HD -VDPAU - | CUDA 3GFX -PureVideo HD VP5VDPAU Feature Set D |
- | Encoder NVENC 1 |
Codec - | Codec AVC (H.264) |
Decoder UVD 3.0 | Decoder NVDEC 1 |
Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264) | Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264) |
Form Factor MXM-A | Form Factor Soldered |
PCIe PCIe 2.1 x16 | PCIe PCIe 3.0 x16 |
Manufacturer | Manufacturer |
Chip Designer | Chip Designer |
Architecture | Architecture |
Family | Family |
Branding  | Branding  |
Codename Turks | Codename NVE7 |
Chip Variant Turks Pro | Chip Variant - |
Market Segment Laptop | Market Segment Laptop |
Release Date Jan 4, 2011 | Release Date Mar 22, 2012 |
Foundry TSMC | Foundry TSMC |
Fabrication Node 40nm | Fabrication Node 28nm |
Die Size 118mm² | Die Size 118mm² |
Transistor Count 716M | Transistor Count 1.3B |
Transistor Density 6.07 MTr/mm² | Transistor Density 10.76 MTr/mm² |