NVIDIA GeForce GT 620 vs NVIDIA GeForce GTX 660 Full Specs
48 Shaders 810MHz | 960 Shaders 1.08GHz |
512MB DDR314.4GB/s | 1.5GB GDDR5144.2GB/s |
·· 155.5 GFLOPS | ·· 2.08 TFLOPS |
Form Factor PCIe Card | Form Factor PCIe Card |
TDP 30W | TDP 140W |
Power Connectors - | Power Connectors 1x 6-Pin |
Clock Speed ·· | Clock Speed ··· |
Peak OPS 155.5 GFLOPSFP32 | Peak OPS 2.08 TFLOPSFP32 |
FP32 155.5 GFLOPS | FP32 2.08 TFLOPS |
FP64 12.96 GFLOPS | FP64 86.72 GFLOPS |
Pixel Rate 6.5 GPixel/s | Pixel Rate 26 GPixel/s |
Texture Rate 13 GTexel/s | Texture Rate 86.7 GTexel/s |
Shaders 48 Shaders | Shaders 960 Shaders |
TMUs 8 TMUs | TMUs 80 TMUs |
ROPs 4 ROPs | ROPs 24 ROPs |
SM 1 SM | SMs 5 SMs |
Base Clock - | Base Clock 980MHz |
Boost Clock 810MHz | Boost Clock 1.08GHz |
Shader Clock 1.62GHz | Shader Clock - |
L2 Cache 128KB shared | L2 Cache 512KB shared |
512MB DDR3 | 1.5GB GDDR5 |
Memory Bus 64-bit | Memory Bus 192-bit |
Memory Speed 1.8GT/s | Memory Speed 6GT/s |
Memory Bandwidth 14.4GB/s | Memory Bandwidth 144.2GB/s |
ECC No | ECC No |
TDP 30W | TDP 140W |
Multi-Monitor 2 | Multi-Monitor 3 |
- 1x HDMI 1.3 1x DVI-I Dual-Link - 1x VGA | 1x DisplayPort 1.2 1x HDMI 1.4 1x DVI-D Dual-Link 1x DVI-I Dual-Link - |
- | Encoder Model NVENC 1 |
Codec - | Codec AVC (H.264) |
Decoder Model VP5 | Decoder Model NVDEC 1 |
Codec - | Codec MPEG-1 MPEG-2 MPEG-4 VC-1 AVC (H.264) |
Form Factor PCIe Card | Form Factor PCIe Card |
PCIe 1-Slots | PCIe 2-Slots |
Height 69 mm (2.72")Width 145 mm (5.71")Depth 20 mm (0.79") | Height 111 mm (4.37")Width 241 mm (9.49")Depth 38 mm (1.5") |
Cooling Open-Air 1x Fan | Cooling Blower 1x Fan |
Power Connectors - | Power Connectors 1x 6-Pin |
Manufacturer | Manufacturer |
Chip Designer | Chip Designer |
Architecture | Architecture |
Family | Family |
Branding  | Branding |
Codename NVD9 | Codename NVE6 |
Market Segment Desktop | Market Segment Desktop |
Release Date Apr 3, 2012 | Release Date Sep 13, 2012 |
Foundry TSMC | Foundry TSMC |
Fabrication Node 40nm | Fabrication Node 28nm |
Die Size 79mm² | Die Size 221mm² |
Transistor Count 292 Million | Transistor Count 2.5 Billion |
Transistor Density 3.7 MTr/mm² | Transistor Density 11.49 MTr/mm² |