NVIDIA Quadro K620 vs NVIDIA GeForce GTX 645 OEM

Comparative analysis of NVIDIA Quadro K620 and NVIDIA GeForce GTX 645 OEM videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), 3DMark Fire Strike - Graphics Score.

 

Differences

Reasons to consider the NVIDIA Quadro K620

  • Videocard is newer: launch date 1 year(s) 3 month(s) later
  • Around 28% higher core clock speed: 1058 MHz vs 824 MHz
  • Around 59% lower typical power consumption: 41 Watt vs 65 Watt
  • 2x more maximum memory size: 2 GB vs 1 GB
  • Around 19% better performance in PassMark - G3D Mark: 2231 vs 1882
  • Around 10% better performance in PassMark - G2D Mark: 474 vs 431
  • Around 31% better performance in Geekbench - OpenCL: 6869 vs 5238
  • Around 60% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 22.112 vs 13.806
  • 2.6x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 99.125 vs 38.664
  • 2.1x better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 2970 vs 1435
  • Around 1% better performance in GFXBench 4.0 - T-Rex (Frames): 3329 vs 3300
  • 2.1x better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 2970 vs 1435
  • Around 1% better performance in GFXBench 4.0 - T-Rex (Fps): 3329 vs 3300
Specifications (specs)
Launch date 22 July 2014 vs 22 April 2013
Core clock speed 1058 MHz vs 824 MHz
Thermal Design Power (TDP) 41 Watt vs 65 Watt
Maximum memory size 2 GB vs 1 GB
Benchmarks
PassMark - G3D Mark 2231 vs 1882
PassMark - G2D Mark 474 vs 431
Geekbench - OpenCL 6869 vs 5238
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 22.112 vs 13.806
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 99.125 vs 38.664
GFXBench 4.0 - Car Chase Offscreen (Frames) 2970 vs 1435
GFXBench 4.0 - T-Rex (Frames) 3329 vs 3300
GFXBench 4.0 - Car Chase Offscreen (Fps) 2970 vs 1435
GFXBench 4.0 - T-Rex (Fps) 3329 vs 3300

Reasons to consider the NVIDIA GeForce GTX 645 OEM

  • 2.2x more texture fill rate: 39.55 GTexel / s vs 17.98 GTexel / s
  • Around 50% higher pipelines: 576 vs 384
  • Around 10% better floating-point performance: 949.2 gflops vs 863.2 gflops
  • 2.2x more memory clock speed: 4000 MHz vs 1800 MHz
  • Around 84% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 546.51 vs 297.631
  • Around 8% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 1.535 vs 1.427
  • Around 79% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 27.524 vs 15.363
  • Around 42% better performance in GFXBench 4.0 - Manhattan (Frames): 3531 vs 2490
  • Around 42% better performance in GFXBench 4.0 - Manhattan (Fps): 3531 vs 2490
Specifications (specs)
Texture fill rate 39.55 GTexel / s vs 17.98 GTexel / s
Pipelines 576 vs 384
Floating-point performance 949.2 gflops vs 863.2 gflops
Memory clock speed 4000 MHz vs 1800 MHz
Benchmarks
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 546.51 vs 297.631
CompuBench 1.5 Desktop - T-Rex (Frames/s) 1.535 vs 1.427
CompuBench 1.5 Desktop - Video Composition (Frames/s) 27.524 vs 15.363
GFXBench 4.0 - Manhattan (Frames) 3531 vs 2490
GFXBench 4.0 - Manhattan (Fps) 3531 vs 2490

Compare benchmarks

GPU 1: NVIDIA Quadro K620
GPU 2: NVIDIA GeForce GTX 645 OEM

PassMark - G3D Mark
GPU 1
GPU 2
2231
1882
PassMark - G2D Mark
GPU 1
GPU 2
474
431
Geekbench - OpenCL
GPU 1
GPU 2
6869
5238
CompuBench 1.5 Desktop - Face Detection (mPixels/s)
GPU 1
GPU 2
22.112
13.806
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)
GPU 1
GPU 2
297.631
546.51
CompuBench 1.5 Desktop - T-Rex (Frames/s)
GPU 1
GPU 2
1.427
1.535
CompuBench 1.5 Desktop - Video Composition (Frames/s)
GPU 1
GPU 2
15.363
27.524
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)
GPU 1
GPU 2
99.125
38.664
GFXBench 4.0 - Car Chase Offscreen (Frames)
GPU 1
GPU 2
2970
1435
GFXBench 4.0 - Manhattan (Frames)
GPU 1
GPU 2
2490
3531
GFXBench 4.0 - T-Rex (Frames)
GPU 1
GPU 2
3329
3300
GFXBench 4.0 - Car Chase Offscreen (Fps)
GPU 1
GPU 2
2970
1435
GFXBench 4.0 - Manhattan (Fps)
GPU 1
GPU 2
2490
3531
GFXBench 4.0 - T-Rex (Fps)
GPU 1
GPU 2
3329
3300
Name NVIDIA Quadro K620 NVIDIA GeForce GTX 645 OEM
PassMark - G3D Mark 2231 1882
PassMark - G2D Mark 474 431
Geekbench - OpenCL 6869 5238
CompuBench 1.5 Desktop - Face Detection (mPixels/s) 22.112 13.806
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) 297.631 546.51
CompuBench 1.5 Desktop - T-Rex (Frames/s) 1.427 1.535
CompuBench 1.5 Desktop - Video Composition (Frames/s) 15.363 27.524
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) 99.125 38.664
GFXBench 4.0 - Car Chase Offscreen (Frames) 2970 1435
GFXBench 4.0 - Manhattan (Frames) 2490 3531
GFXBench 4.0 - T-Rex (Frames) 3329 3300
GFXBench 4.0 - Car Chase Offscreen (Fps) 2970 1435
GFXBench 4.0 - Manhattan (Fps) 2490 3531
GFXBench 4.0 - T-Rex (Fps) 3329 3300
3DMark Fire Strike - Graphics Score 702

Compare specifications (specs)

NVIDIA Quadro K620 NVIDIA GeForce GTX 645 OEM

Essentials

Architecture Maxwell Kepler
Code name GM107 GK106
Launch date 22 July 2014 22 April 2013
Launch price (MSRP) $189.89
Place in performance rating 974 976
Price now $189.93
Type Workstation Desktop
Value for money (0-100) 15.23

Technical info

Boost clock speed 1124 MHz
Core clock speed 1058 MHz 824 MHz
Floating-point performance 863.2 gflops 949.2 gflops
Manufacturing process technology 28 nm 28 nm
Pipelines 384 576
Texture fill rate 17.98 GTexel / s 39.55 GTexel / s
Thermal Design Power (TDP) 41 Watt 65 Watt
Transistor count 1,870 million 2,540 million

Video outputs and ports

Display Connectors 1x DVI, 1x DisplayPort, DVI-I DP 1x DVI, 1x HDMI, 1x DisplayPort
Number of simultaneous displays 4

Compatibility, dimensions and requirements

Interface PCIe 2.0 x16 PCIe 3.0 x16
Length 160 mm 147 mm
Supplementary power connectors None None
Width 1" (2.5 cm)

API support

DirectX 12 12.0 (11_0)
OpenGL 4.5 4.6
Shader Model 5
Vulkan

Memory

Maximum RAM amount 2 GB 1 GB
Memory bus width 128 Bit 128 Bit
Memory clock speed 1800 MHz 4000 MHz
Memory type 128 Bit GDDR5
Memory bandwidth 64 GB / s

Technologies

3D Vision Pro
Mosaic
nView Desktop Management