NVIDIA GeForce GT 640 1GB vs NVIDIA GeForce GTX 650 Full Specs
384 Shaders 797MHz | 384 Shaders 1.06GHz |
1GB DDR328.5GB/s | 1GB GDDR580GB/s |
·· 612.1 GFLOPS | ·· 812.5 GFLOPS |
Form Factor PCIe Card | Form Factor PCIe Card |
TDP 50W | TDP 64W |
Power Connectors - | Power Connectors 1x 6-Pin |
GeForce GT 640 1GB612.1 GFLOPSFP32
GeForce GTX 650812.5 GFLOPSFP32Clock Speed ·· | Clock Speed ·· |
Peak OPS 612.1 GFLOPSFP32 | Peak OPS 812.5 GFLOPSFP32 |
FP32 612.1 GFLOPS | FP32 812.5 GFLOPS |
FP64 25.5 GFLOPS | FP64 33.85 GFLOPS |
Pixel Rate 12.8 GPixel/s | Pixel Rate 16.9 GPixel/s |
Texture Rate 25.5 GTexel/s | Texture Rate 33.9 GTexel/s |
Shaders 384 Shaders | Shaders 384 Shaders |
TMUs 32 TMUs | TMUs 32 TMUs |
ROPs 16 ROPs | ROPs 16 ROPs |
SMs 2 SMs | SMs 2 SMs |
Boost Clock 797MHz | Boost Clock 1.06GHz |
L2 Cache 256KB shared | L2 Cache 256KB shared |
1GB DDR3 | 1GB GDDR5 |
Memory Bus 128-bit | Memory Bus 128-bit |
Memory Speed 1.8GT/s | Memory Speed 5GT/s |
Memory Bandwidth 28.5GB/s | Memory Bandwidth 80GB/s |
TDP 50W | TDP 64W |
Multi-Monitor 2 | Multi-Monitor 2 |
1x HDMI 1.4 | - |
- | 1x Mini HDMI 1.4 |
- | 1x DVI-D Dual-Link |
1x DVI-I Dual-Link | 1x DVI-I Dual-Link |
1x VGA | - |
Encoder Model NVENC 1 | Encoder Model NVENC 1 |
Decoder Model NVDEC 1 | Decoder Model NVDEC 1 |
Form Factor PCIe Card | Form Factor PCIe Card |
PCIe 1.5-Slots | PCIe 1.5-Slots |
Height 111 mm (4.37")Width 145 mm (5.71")Depth 30 mm (1.18") | Height 111 mm (4.37")Width 145 mm (5.71")Depth 30 mm (1.18") |
Cooling Open-Air 1x Fan | Cooling Open-Air 1x Fan |
Power Connectors - | Power Connectors 1x 6-Pin |
Manufacturer | Manufacturer |
Chip Designer | Chip Designer |
Architecture | Architecture |
Family | Family |
Branding  | Branding |
Codename NVE7 | Codename NVE7 |
Market Segment Desktop | Market Segment Desktop |
Release Date Apr 24, 2012 | Release Date Sep 13, 2012 |
Foundry TSMC | Foundry TSMC |
Fabrication Node 28nm | Fabrication Node 28nm |
Die Size 118mm² | Die Size 118mm² |
Transistor Count 1.3 Billion | Transistor Count 1.3 Billion |
Transistor Density 10.76 MTr/mm² | Transistor Density 10.76 MTr/mm² |
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