Quadro K620M vs GeForce GT 640

Place in performance ranking	726	734
Place by popularity	not in top-100	not in top-100
Value for money	0.20	no data
Architecture	Kepler (2012−2018)	Maxwell (2014−2018)
GPU code name	GK107	GM108
Market segment	Desktop	Mobile workstation
Release date	5 June 2012 (11 years ago)	1 March 2015 (9 years ago)
Launch price (MSRP)	$99	no data
Current price	$157 (1.6x MSRP)	no data

Value for money

Performance to price ratio. The higher, the better.

no data

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	384	384
Core clock speed	902 MHz	1029 MHz
Boost clock speed	no data	1124 MHz
Number of transistors	1,270 million	no data
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	65 Watt	30 Watt
Texture fill rate	28.86	17.98
Floating-point performance	692.7 gflops	863.2 gflops

Size and compatibility

Information on GeForce GT 640 and Quadro K620M compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Interface	PCIe 3.0 x16	MXM-A (3.0)
Length	145 mm	no data
Width	1-slot	no data
Supplementary power connectors	None	None

Memory

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	DDR3	DDR3
Maximum RAM amount	2 GB	2 GB
Memory bus width	128 Bit	64 Bit
Memory clock speed	1782 MHz	2000 MHz
Memory bandwidth	28.51 GB/s	14.4 GB/s
Shared memory	no data	-

Video outputs and ports

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	1x DVI, 1x HDMI, 1x DisplayPort	No outputs
HDMI	+	no data
Display Port	no data	1.2

Technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

Optimus	no data	+
nView Display Management	no data	+
Optimus	no data	+

API support

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX	12 (11_0)	12
Shader Model	5.1	5
OpenGL	4.6	4.5
OpenCL	1.2	1.2
Vulkan	1.1.126	1.1.126
CUDA	3.0	+

Synthetic benchmark performance

Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GT 640 3.04
+1.3%

Quadro K620M 3.00

GeForce GT 640 outperforms Quadro K620M by 1% based on our aggregated benchmark results.

Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Benchmark coverage: 25%

GT 640 1177
+1.3%

Quadro K620M 1162

GeForce GT 640 outperforms Quadro K620M by 1% in Passmark.

3DMark Fire Strike Graphics

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

Benchmark coverage: 14%

GT 640 1560

Quadro K620M 1621
+3.9%

Quadro K620M outperforms GeForce GT 640 by 4% in 3DMark Fire Strike Graphics.

GeekBench 5 OpenCL

Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.

Benchmark coverage: 9%

GT 640 3742

Quadro K620M 5984
+59.9%

Quadro K620M outperforms GeForce GT 640 by 60% in GeekBench 5 OpenCL.