GeForce GT 640M vs Quadro K420
When choosing between GeForce GT 640M and Quadro K420, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640M and Quadro K420.
GeForce GT 640M is a Laptop Graphics Card
Note: GeForce GT 640M is only used in laptop graphics. It has 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 here:
Main Specs
GeForce GT 640M
Quadro K420
Power consumption (TDP)
32 Watt
41 Watt
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
Memory type
DDR3\GDDR5
128 Bit
Maximum RAM amount
2 GB
1 GB/2 GB
Display Connectors
No outputs
1x DVI, 1x DisplayPort
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Quadro K420 has 28% more power consumption, than GeForce GT 640M.
GeForce GT 640M is connected by PCIe 3.0 x16, and Quadro K420 uses PCIe 2.0 x16 interface.
GeForce GT 640M has 1 GB more memory, than Quadro K420.
GeForce GT 640M is used in Laptops, and Quadro K420 - in Desktops.
GeForce GT 640M and Quadro K420 are build with Kepler architecture.
GeForce GT 640M and Quadro K420 are manufactured by 28 nm process technology.
Memory clock speed of GeForce GT 640M is 18 MHz higher, than Quadro K420.
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
0−1
ultra / 1080p
0−1
0−1
QHD / 1440p
0−1
0−1
low / 720p
10−12
9−10
medium / 1080p
2−3
1−2
The average gaming FPS of GeForce GT 640M in Assassin's Creed Odyssey is 20% more, than Quadro K420.
ultra / 1080p
3−4
1−2
QHD / 1440p
0−1
0−1
low / 720p
12−14
9−10
medium / 1080p
4−5
2−3
The average gaming FPS of GeForce GT 640M in Battlefield 5 is 75% more, than Quadro K420.
low / 768p
50−55
50−55
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
GeForce GT 640M and Quadro K420 have the same average FPS in Call of Duty: Warzone.
low / 768p
110−120
100−110
medium / 768p
85−90
75−80
ultra / 1080p
35−40
30−35
4K / 2160p
10−11
9−10
high / 768p
55−60
50−55
The average gaming FPS of GeForce GT 640M in Counter-Strike: Global Offensive is 10% more, than Quadro K420.
low / 768p
70−75
70−75
ultra / 1080p
12−14
10−12
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640M in Cyberpunk 2077 is 2% more, than Quadro K420.
low / 768p
70−75
65−70
medium / 768p
40−45
35−40
ultra / 1080p
18−20
14−16
The average gaming FPS of GeForce GT 640M in Dota 2 is 10% more, than Quadro K420.
high / 1080p
2−3
1−2
ultra / 1080p
2−3
−
4K / 2160p
0−1
0−1
low / 720p
9−10
7−8
medium / 1080p
3−4
2−3
The average gaming FPS of GeForce GT 640M in Far Cry 5 is 66% more, than Quadro K420.
ultra / 1080p
5−6
−
QHD / 1440p
1−2
0−1
low / 720p
45−50
40−45
medium / 1080p
7−8
4−5
The average gaming FPS of GeForce GT 640M in Fortnite is 17% more, than Quadro K420.
high / 1080p
2−3
1−2
QHD / 1440p
0−1
0−1
low / 720p
14−16
10−12
medium / 1080p
5−6
3−4
The average gaming FPS of GeForce GT 640M in Forza Horizon 4 is 40% more, than Quadro K420.
low / 768p
40−45
35−40
high / 1080p
3−4
1−2
ultra / 1080p
2−3
−
QHD / 1440p
0−1
0−1
medium / 720p
30−35
30−35
The average gaming FPS of GeForce GT 640M in Grand Theft Auto V is 13% more, than Quadro K420.
high / 1080p
1−2
0−1
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
2−3
1−2
medium / 1080p
2−3
−
The average gaming FPS of GeForce GT 640M in Metro Exodus is 100% more, than Quadro K420.
low / 768p
85−90
85−90
high / 1080p
55−60
50−55
The average gaming FPS of GeForce GT 640M in Minecraft is 2% more, than Quadro K420.
high / 1080p
14−16
14−16
ultra / 1080p
12−14
12−14
low / 720p
24−27
21−24
medium / 1080p
14−16
14−16
The average gaming FPS of GeForce GT 640M in PLAYERUNKNOWN'S BATTLEGROUNDS is 6% more, than Quadro K420.
ultra / 1080p
3−4
−
QHD / 1440p
0−1
0−1
low / 720p
3−4
2−3
The average gaming FPS of GeForce GT 640M in Red Dead Redemption 2 is 50% more, than Quadro K420.
low / 768p
7−8
4−5
medium / 768p
6−7
−
high / 1080p
3−4
2−3
4K / 2160p
0−1
0−1
The average gaming FPS of GeForce GT 640M in The Witcher 3: Wild Hunt is 66% more, than Quadro K420.
low / 768p
70−75
65−70
medium / 768p
35−40
30−35
ultra / 1080p
12−14
10−12
high / 768p
27−30
27−30
The average gaming FPS of GeForce GT 640M in World of Tanks is 8% more, than Quadro K420.
Full Specs
GeForce GT 640M
Quadro K420
Architecture
Kepler
Kepler
Code name
N13P-GS
GK107
Type
Laptop
Workstation
Release date
22 March 2012
22 July 2014
Pipelines
384
192
Core clock speed
876 MHz
Boost Clock
645 MHz
Transistor count
1,270 million
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
14.02
Floating-point performance
480.0 gflops
336.4 gflops
Length
160 mm
Memory bus width
128bit
128 Bit
Memory clock speed
1800 - 4000 MHz
1782 MHz
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
+
CUDA
+
3.0
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
11 Mh/s
Laptop size
medium sized
Optimus
+
3D Vision Pro
+
Mosaic
+
Width
1" (2.5 cm)
Number of simultaneous displays
4
nView Desktop Management
+
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