GeForce GT 645M vs Quadro K420
If you are going to buy a new graphics card and are choosing between GeForce GT 645M and Quadro K420, 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 645M stacks up against Quadro K420, check out specs charts below.
GeForce GT 645M is a Laptop Graphics Card
Note: GeForce GT 645M 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 645M here:
Main Specs
GeForce GT 645M
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 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Quadro K420 uses PCIe 2.0 x16 interface.
GeForce GT 645M has 1 GB more memory, than Quadro K420.
GeForce GT 645M is used in Laptops, and Quadro K420 - in Desktops.
GeForce GT 645M and Quadro K420 are build with Kepler architecture.
GeForce GT 645M and Quadro K420 are manufactured by 28 nm process technology.
Memory clock speed of GeForce GT 645M 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
1−2
0−1
ultra / 1080p
0−1
0−1
QHD / 1440p
0−1
0−1
low / 720p
12−14
9−10
medium / 1080p
2−3
1−2
The average gaming FPS of GeForce GT 645M in Assassin's Creed Odyssey is 40% 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 645M 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 645M 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
60−65
50−55
The average gaming FPS of GeForce GT 645M in Counter-Strike: Global Offensive is 12% more, than Quadro K420.
low / 768p
70−75
70−75
ultra / 1080p
14−16
10−12
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 4% more, than Quadro K420.
low / 768p
70−75
65−70
medium / 768p
45−50
35−40
ultra / 1080p
18−20
14−16
The average gaming FPS of GeForce GT 645M in Dota 2 is 15% more, than Quadro K420.
high / 1080p
2−3
1−2
ultra / 1080p
2−3
−
4K / 2160p
0−1
0−1
low / 720p
10−11
7−8
medium / 1080p
3−4
2−3
The average gaming FPS of GeForce GT 645M 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
8−9
4−5
The average gaming FPS of GeForce GT 645M in Fortnite is 21% more, than Quadro K420.
high / 1080p
3−4
1−2
QHD / 1440p
0−1
0−1
low / 720p
14−16
10−12
medium / 1080p
6−7
3−4
The average gaming FPS of GeForce GT 645M in Forza Horizon 4 is 60% 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
35−40
30−35
The average gaming FPS of GeForce GT 645M in Grand Theft Auto V is 17% more, than Quadro K420.
high / 1080p
1−2
0−1
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
3−4
1−2
medium / 1080p
2−3
−
The average gaming FPS of GeForce GT 645M in Metro Exodus is 200% more, than Quadro K420.
low / 768p
85−90
85−90
high / 1080p
55−60
50−55
The average gaming FPS of GeForce GT 645M 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 645M in PLAYERUNKNOWN'S BATTLEGROUNDS is 6% more, than Quadro K420.
ultra / 1080p
3−4
−
QHD / 1440p
0−1
0−1
low / 720p
4−5
2−3
The average gaming FPS of GeForce GT 645M in Red Dead Redemption 2 is 100% more, than Quadro K420.
low / 768p
8−9
4−5
medium / 768p
7−8
−
high / 1080p
3−4
2−3
ultra / 1080p
3−4
−
4K / 2160p
0−1
0−1
The average gaming FPS of GeForce GT 645M in The Witcher 3: Wild Hunt is 100% more, than Quadro K420.
low / 768p
70−75
65−70
medium / 768p
35−40
30−35
ultra / 1080p
12−14
10−12
high / 768p
30−33
27−30
The average gaming FPS of GeForce GT 645M in World of Tanks is 11% more, than Quadro K420.
Full Specs
GeForce GT 645M
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
Transistor count
1,270 million
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
22.7 billion/sec
14.02
Floating-point performance
544.5 gflops
336.4 gflops
Length
160 mm
Memory bus width
128bit
128 Bit
Memory clock speed
1800 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)
19 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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