GeForce GT 645M vs Quadro K620
When choosing between GeForce GT 645M and Quadro K620, 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 645M and Quadro K620.
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 K620
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
2 GB
Display Connectors
No outputs
1x DVI, 1x DisplayPort
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Quadro K620 has 28% more power consumption, than GeForce GT 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Quadro K620 uses PCIe 2.0 x16 interface.
GeForce GT 645M and Quadro K620 have maximum RAM of 2 GB.
GeForce GT 645M is used in Laptops, and Quadro K620 - in Desktops.
GeForce GT 645M is build with Kepler architecture, and Quadro K620 - with Maxwell.
GeForce GT 645M and Quadro K620 are manufactured by 28 nm process technology.
Memory clock speed of GeForce GT 645M and Quadro K620 is 1800 MHz.
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
10−12
ultra / 1080p
0−1
6−7
QHD / 1440p
0−1
1−2
low / 720p
12−14
24−27
medium / 1080p
2−3
14−16
The average gaming FPS of Quadro K620 in Assassin's Creed Odyssey is 240% more, than GeForce GT 645M.
high / 1080p
−
18−20
ultra / 1080p
3−4
16−18
QHD / 1440p
0−1
2−3
low / 720p
12−14
40−45
medium / 1080p
4−5
20−22
The average gaming FPS of Quadro K620 in Battlefield 5 is 271% more, than GeForce GT 645M.
low / 768p
50−55
45−50
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 645M in Call of Duty: Warzone is 10% more, than Quadro K620.
low / 768p
110−120
180−190
medium / 768p
85−90
150−160
ultra / 1080p
35−40
75−80
QHD / 1440p
−
45−50
4K / 2160p
10−11
30−33
high / 768p
60−65
110−120
The average gaming FPS of Quadro K620 in Counter-Strike: Global Offensive is 80% more, than GeForce GT 645M.
low / 768p
70−75
55−60
ultra / 1080p
14−16
30−35
medium / 1080p
45−50
45−50
GeForce GT 645M and Quadro K620 have the same average FPS in Cyberpunk 2077.
low / 768p
70−75
95−100
medium / 768p
45−50
80−85
ultra / 1080p
18−20
50−55
The average gaming FPS of Quadro K620 in Dota 2 is 67% more, than GeForce GT 645M.
high / 1080p
2−3
12−14
ultra / 1080p
2−3
12−14
4K / 2160p
0−1
5−6
low / 720p
10−11
30−33
medium / 1080p
3−4
14−16
The average gaming FPS of Quadro K620 in Far Cry 5 is 350% more, than GeForce GT 645M.
high / 1080p
−
20−22
ultra / 1080p
5−6
14−16
QHD / 1440p
1−2
−
low / 720p
45−50
80−85
medium / 1080p
8−9
40−45
The average gaming FPS of Quadro K620 in Fortnite is 130% more, than GeForce GT 645M.
high / 1080p
3−4
20−22
ultra / 1080p
−
16−18
QHD / 1440p
0−1
5−6
low / 720p
14−16
40−45
medium / 1080p
6−7
21−24
The average gaming FPS of Quadro K620 in Forza Horizon 4 is 250% more, than GeForce GT 645M.
low / 768p
40−45
70−75
medium / 768p
−
60−65
high / 1080p
3−4
21−24
ultra / 1080p
2−3
9−10
QHD / 1440p
0−1
0−1
medium / 720p
35−40
−
The average gaming FPS of Quadro K620 in Grand Theft Auto V is 112% more, than GeForce GT 645M.
high / 1080p
1−2
7−8
ultra / 1080p
0−1
5−6
4K / 2160p
0−1
1−2
low / 720p
3−4
21−24
medium / 1080p
2−3
10−11
The average gaming FPS of Quadro K620 in Metro Exodus is 550% more, than GeForce GT 645M.
low / 768p
85−90
100−110
high / 1080p
55−60
−
ultra / 1080p
−
95−100
medium / 1080p
−
100−110
The average gaming FPS of Quadro K620 in Minecraft is 20% more, than GeForce GT 645M.
high / 1080p
14−16
20−22
ultra / 1080p
12−14
16−18
low / 720p
24−27
45−50
medium / 1080p
14−16
21−24
The average gaming FPS of Quadro K620 in PLAYERUNKNOWN'S BATTLEGROUNDS is 58% more, than GeForce GT 645M.
high / 1080p
−
12−14
ultra / 1080p
3−4
8−9
QHD / 1440p
0−1
0−1
low / 720p
4−5
21−24
medium / 1080p
−
14−16
The average gaming FPS of Quadro K620 in Red Dead Redemption 2 is 275% more, than GeForce GT 645M.
low / 768p
8−9
40−45
medium / 768p
7−8
24−27
high / 1080p
3−4
14−16
ultra / 1080p
3−4
9−10
4K / 2160p
0−1
7−8
The average gaming FPS of Quadro K620 in The Witcher 3: Wild Hunt is 360% more, than GeForce GT 645M.
low / 768p
70−75
95−100
medium / 768p
35−40
55−60
ultra / 1080p
12−14
27−30
high / 768p
30−33
45−50
The average gaming FPS of Quadro K620 in World of Tanks is 50% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Quadro K620
Architecture
Kepler
Maxwell
Code name
N13P-GS
GM107
Type
Laptop
Workstation
Release date
22 March 2012
22 July 2014
Pipelines
384
384
Core clock speed
1058 MHz
Boost Clock
1124 MHz
Transistor count
1,270 million
1,870 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
22.7 billion/sec
26.98
Floating-point performance
544.5 gflops
863.2 gflops
Length
160 mm
Memory bus width
128bit
128 Bit
Memory clock speed
1800 MHz
1800 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
+
5.0
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
104 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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