GeForce GT 640M vs Quadro K620M
If you are going to buy a new graphics card and are choosing between GeForce GT 640M and Quadro K620M, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 640M stacks up against Quadro K620M, check out specs charts below.
GeForce GT 640M and Quadro K620M are Laptop Graphics Cards
Note: GeForce GT 640M and Quadro K620M are only used in laptop graphics. They have lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GT 640M or Quadro K620M here:
Main Specs
GeForce GT 640M
Quadro K620M
Power consumption (TDP)
32 Watt
30 Watt
Interface
PCIe 3.0 x16
MXM-A (3.0)
Supplementary power connectors
None
Memory type
DDR3\GDDR5
DDR3
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
No outputs
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GeForce GT 640M has 6% more power consumption, than Quadro K620M.
GeForce GT 640M is connected by PCIe 3.0 x16, and Quadro K620M uses MXM-A (3.0) interface.
GeForce GT 640M and Quadro K620M have maximum RAM of 2 GB.
GeForce GT 640M is used in Laptops, and Quadro K620M - in Mobile workstations.
GeForce GT 640M is build with Kepler architecture, and Quadro K620M - with Maxwell.
GeForce GT 640M and Quadro K620M are manufactured by 28 nm process technology.
Memory clock speed of Quadro K620M is 200 MHz higher, than GeForce GT 640M.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
0−1
3−4
ultra / 1080p
0−1
1−2
QHD / 1440p
0−1
0−1
low / 720p
10−12
14−16
medium / 1080p
2−3
5−6
The average gaming FPS of Quadro K620M in Assassin's Creed Odyssey is 66% more, than GeForce GT 640M.
high / 1080p
−
7−8
ultra / 1080p
3−4
5−6
QHD / 1440p
0−1
0−1
low / 720p
12−14
18−20
medium / 1080p
4−5
8−9
The average gaming FPS of Quadro K620M in Battlefield 5 is 57% more, than GeForce GT 640M.
low / 768p
50−55
45−50
high / 1080p
45−50
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 640M in Call of Duty: Warzone is 11% more, than Quadro K620M.
low / 768p
110−120
120−130
medium / 768p
85−90
95−100
ultra / 1080p
35−40
45−50
QHD / 1440p
−
24−27
4K / 2160p
10−11
−
high / 768p
55−60
70−75
The average gaming FPS of Quadro K620M in Counter-Strike: Global Offensive is 14% more, than GeForce GT 640M.
low / 768p
70−75
70−75
ultra / 1080p
12−14
20−22
medium / 1080p
45−50
40−45
The average gaming FPS of Quadro K620M in Cyberpunk 2077 is 2% more, than GeForce GT 640M.
low / 768p
70−75
75−80
medium / 768p
40−45
55−60
ultra / 1080p
18−20
27−30
The average gaming FPS of Quadro K620M in Dota 2 is 22% more, than GeForce GT 640M.
high / 1080p
2−3
4−5
ultra / 1080p
2−3
3−4
4K / 2160p
0−1
0−1
low / 720p
9−10
14−16
medium / 1080p
3−4
5−6
The average gaming FPS of Quadro K620M in Far Cry 5 is 75% more, than GeForce GT 640M.
high / 1080p
−
12−14
ultra / 1080p
5−6
7−8
QHD / 1440p
1−2
4−5
low / 720p
45−50
55−60
medium / 1080p
7−8
14−16
The average gaming FPS of Quadro K620M in Fortnite is 40% more, than GeForce GT 640M.
high / 1080p
2−3
6−7
ultra / 1080p
−
6−7
QHD / 1440p
0−1
0−1
low / 720p
14−16
21−24
medium / 1080p
5−6
9−10
The average gaming FPS of Quadro K620M in Forza Horizon 4 is 71% more, than GeForce GT 640M.
low / 768p
40−45
45−50
high / 1080p
3−4
8−9
ultra / 1080p
2−3
3−4
QHD / 1440p
0−1
0−1
medium / 720p
30−35
40−45
The average gaming FPS of Quadro K620M in Grand Theft Auto V is 25% more, than GeForce GT 640M.
high / 1080p
1−2
2−3
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
2−3
7−8
medium / 1080p
2−3
3−4
The average gaming FPS of Quadro K620M in Metro Exodus is 100% more, than GeForce GT 640M.
low / 768p
85−90
85−90
high / 1080p
55−60
65−70
The average gaming FPS of Quadro K620M in Minecraft is 6% more, than GeForce GT 640M.
high / 1080p
14−16
−
ultra / 1080p
12−14
12−14
low / 720p
24−27
27−30
medium / 1080p
14−16
14−16
The average gaming FPS of Quadro K620M in PLAYERUNKNOWN'S BATTLEGROUNDS is 5% more, than GeForce GT 640M.
high / 1080p
−
6−7
ultra / 1080p
3−4
4−5
QHD / 1440p
0−1
0−1
low / 720p
3−4
7−8
The average gaming FPS of Quadro K620M in Red Dead Redemption 2 is 100% more, than GeForce GT 640M.
low / 768p
7−8
16−18
medium / 768p
6−7
12−14
high / 1080p
3−4
6−7
ultra / 1080p
−
4−5
4K / 2160p
0−1
1−2
The average gaming FPS of Quadro K620M in The Witcher 3: Wild Hunt is 140% more, than GeForce GT 640M.
low / 768p
70−75
70−75
medium / 768p
35−40
35−40
ultra / 1080p
12−14
16−18
high / 768p
27−30
30−35
The average gaming FPS of Quadro K620M in World of Tanks is 5% more, than GeForce GT 640M.
Full Specs
GeForce GT 640M
Quadro K620M
Architecture
Kepler
Maxwell
Code name
N13P-GS
GM108
Type
Laptop
Mobile workstation
Release date
22 March 2012
1 March 2015
Pipelines
384
384
Core clock speed
1029 MHz
Boost Clock
645 MHz
1124 MHz
Transistor count
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
17.98
Floating-point performance
480.0 gflops
863.2 gflops
Memory bus width
128bit
64 Bit
Memory clock speed
1800 - 4000 MHz
2000 MHz
Memory bandwidth
14.4 GB/s
Shared memory
-
-
DirectX
12 API
12
Shader Model
5.1
5
OpenGL
4.5
4.5
OpenCL
1.1
1.2
Vulkan
1.1.126
1.1.126
CUDA
+
+
CUDA cores
384
Bus support
PCI Express 2.0, PCI Express 3.0
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
3D Blu-Ray
+
Bitcoin / BTC (SHA256)
18 Mh/s
92 Mh/s
Laptop size
medium sized
Optimus
+
+
Display Port
1.2
nView Display Management
+
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