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.

NVIDIA Quadro K620

NVIDIA GeForce GTX 645 OEM

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: 2233 vs 1877
Around 10% better performance in PassMark - G2D Mark: 472 vs 430
Around 31% better performance in Geekbench - OpenCL: 6869 vs 5235
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	2233 vs 1877
PassMark - G2D Mark	472 vs 430
Geekbench - OpenCL	6869 vs 5235
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

2233

1877

PassMark - G2D Mark

GPU 1

GPU 2

472

430

Geekbench - OpenCL

GPU 1

GPU 2

6869

5235

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	2233	1877
PassMark - G2D Mark	472	430
Geekbench - OpenCL	6869	5235
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	964
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