NVIDIA GeForce GT 645M vs NVIDIA GeForce GTX 675M Full Specs
384 Shaders 710MHz | 384 Shaders 632MHz |
1GB GDDR564GB/s | 2GB GDDR596GB/s |
·· 545.3 GFLOPS | ·· 971.5 GFLOPS |
Form Factor Soldered | Form Factor Soldered |
TDP 32W | TDP 100W |
GeForce GT 645M545.3 GFLOPSFP32GeForce GTX 675M971.5 GFLOPSFP32Clock Speed ·· | Clock Speed ·· |
Peak OPS 545.3 GFLOPSFP32 | Peak OPS 971.5 GFLOPSFP32 |
FP32 545.3 GFLOPS | FP32 971.5 GFLOPS |
FP64 22.72 GFLOPS | FP64 80.96 GFLOPS |
Pixel Rate 11.4 GPixel/s | Pixel Rate 40.5 GPixel/s |
Texture Rate 22.7 GTexel/s | Texture Rate 81 GTexel/s |
Shaders 384 Shaders | Shaders 384 Shaders |
TMUs 32 TMUs | TMUs 64 TMUs |
ROPs 16 ROPs | ROPs 32 ROPs |
SMs 2 SMs | SMs 8 SMs |
Boost Clock 710MHz | Boost Clock 632MHz |
Shader Clock - | Shader Clock 1.26GHz |
L2 Cache 256KB shared | L2 Cache 512KB shared |
1GB GDDR5 | 2GB GDDR5 |
Memory Bus 128-bit | Memory Bus 256-bit |
Memory Speed 4GT/s | Memory Speed 3GT/s |
Memory Bandwidth 64GB/s | Memory Bandwidth 96GB/s |
TDP 32W | TDP 100W |
Multi-Monitor 3 | Multi-Monitor 2 |
Encoder Model NVENC 1 | - |
Decoder Model NVDEC 1 | Decoder Model VP4 |
Form Factor Soldered | Form Factor Soldered |
Manufacturer | Manufacturer |
Chip Designer | Chip Designer |
Architecture | Architecture |
Family | Family |
Branding  | Branding |
Codename NVE7 | Codename NVCE |
Market Segment Laptop | Market Segment Laptop |
Release Date Oct 1, 2012 | Release Date Apr 1, 2012 |
Foundry TSMC | Foundry TSMC |
Fabrication Node 28nm | Fabrication Node 40nm |
Die Size 118mm² | Die Size 332mm² |
Transistor Count 1.3 Billion | Transistor Count 1.9 Billion |
Transistor Density 10.76 MTr/mm² | Transistor Density 5.87 MTr/mm² |
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