GeForce GT 645M vs Quadro M620
If you are going to buy a new graphics card and are choosing between GeForce GT 645M and Quadro M620, 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 M620, check out specs charts below.
GeForce GT 645M and Quadro M620 are Laptop Graphics Cards
Note: GeForce GT 645M and Quadro M620 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 645M or Quadro M620 here:
Main Specs
GeForce GT 645M
Quadro M620
Power consumption (TDP)
32 Watt
30 Watt
Interface
PCIe 3.0 x16
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
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GeForce GT 645M has 6% more power consumption, than Quadro M620.
GeForce GT 645M and Quadro M620 have maximum RAM of 2 GB.
GeForce GT 645M is used in Laptops, and Quadro M620 - in Mobile workstations.
GeForce GT 645M is build with Kepler architecture, and Quadro M620 - with Maxwell.
GeForce GT 645M and Quadro M620 are manufactured by 28 nm process technology.
Memory clock speed of Quadro M620 is 3212 MHz higher, than GeForce GT 645M.
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
14−16
ultra / 1080p
0−1
8−9
QHD / 1440p
0−1
3−4
low / 720p
12−14
30−35
medium / 1080p
2−3
18−20
The average gaming FPS of Quadro M620 in Assassin's Creed Odyssey is 340% more, than GeForce GT 645M.
high / 1080p
−
24−27
ultra / 1080p
3−4
20−22
QHD / 1440p
0−1
7−8
4K / 2160p
−
5−6
low / 720p
12−14
50−55
medium / 1080p
4−5
24−27
The average gaming FPS of Quadro M620 in Battlefield 5 is 371% 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 M620.
low / 768p
110−120
200−210
medium / 768p
85−90
170−180
ultra / 1080p
35−40
95−100
QHD / 1440p
−
50−55
4K / 2160p
10−11
30−33
high / 768p
60−65
130−140
The average gaming FPS of Quadro M620 in Counter-Strike: Global Offensive is 106% more, than GeForce GT 645M.
low / 768p
70−75
55−60
ultra / 1080p
14−16
35−40
medium / 1080p
45−50
45−50
The average gaming FPS of Quadro M620 in Cyberpunk 2077 is 4% more, than GeForce GT 645M.
low / 768p
70−75
100−110
medium / 768p
45−50
90−95
ultra / 1080p
18−20
60−65
The average gaming FPS of Quadro M620 in Dota 2 is 86% more, than GeForce GT 645M.
high / 1080p
2−3
16−18
ultra / 1080p
2−3
16−18
4K / 2160p
0−1
6−7
low / 720p
10−11
35−40
medium / 1080p
3−4
18−20
The average gaming FPS of Quadro M620 in Far Cry 5 is 450% more, than GeForce GT 645M.
high / 1080p
−
24−27
ultra / 1080p
5−6
18−20
QHD / 1440p
1−2
16−18
low / 720p
45−50
95−100
medium / 1080p
8−9
50−55
The average gaming FPS of Quadro M620 in Fortnite is 206% more, than GeForce GT 645M.
high / 1080p
3−4
24−27
ultra / 1080p
−
20−22
QHD / 1440p
0−1
8−9
low / 720p
14−16
50−55
medium / 1080p
6−7
27−30
The average gaming FPS of Quadro M620 in Forza Horizon 4 is 337% more, than GeForce GT 645M.
low / 768p
40−45
85−90
medium / 768p
−
75−80
high / 1080p
3−4
27−30
ultra / 1080p
2−3
12−14
QHD / 1440p
0−1
2−3
medium / 720p
35−40
−
The average gaming FPS of Quadro M620 in Grand Theft Auto V is 168% more, than GeForce GT 645M.
high / 1080p
1−2
9−10
ultra / 1080p
0−1
7−8
4K / 2160p
0−1
2−3
low / 720p
3−4
27−30
medium / 1080p
2−3
12−14
The average gaming FPS of Quadro M620 in Metro Exodus is 750% more, than GeForce GT 645M.
low / 768p
85−90
110−120
high / 1080p
55−60
−
ultra / 1080p
−
100−110
medium / 1080p
−
100−110
The average gaming FPS of Quadro M620 in Minecraft is 32% more, than GeForce GT 645M.
high / 1080p
14−16
21−24
ultra / 1080p
12−14
16−18
low / 720p
24−27
55−60
medium / 1080p
14−16
24−27
The average gaming FPS of Quadro M620 in PLAYERUNKNOWN'S BATTLEGROUNDS is 76% more, than GeForce GT 645M.
high / 1080p
−
14−16
ultra / 1080p
3−4
9−10
QHD / 1440p
0−1
0−1
low / 720p
4−5
27−30
medium / 1080p
−
16−18
The average gaming FPS of Quadro M620 in Red Dead Redemption 2 is 375% more, than GeForce GT 645M.
low / 768p
8−9
50−55
medium / 768p
7−8
30−35
high / 1080p
3−4
18−20
ultra / 1080p
3−4
10−12
4K / 2160p
0−1
8−9
The average gaming FPS of Quadro M620 in The Witcher 3: Wild Hunt is 460% more, than GeForce GT 645M.
low / 768p
70−75
100−110
medium / 768p
35−40
60−65
ultra / 1080p
12−14
30−35
high / 768p
30−33
50−55
The average gaming FPS of Quadro M620 in World of Tanks is 65% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Quadro M620
Architecture
Kepler
Maxwell
Code name
N13P-GS
Type
Laptop
Mobile workstation
Release date
22 March 2012
13 January 2017
Pipelines
384
512
Core clock speed
1018 MHz
Transistor count
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
22.7 billion/sec
Floating-point performance
544.5 gflops
Memory bus width
128bit
128 Bit
Memory clock speed
1800 MHz
5012 MHz
Memory bandwidth
80 GB/s
Shared memory
-
-
DirectX
12 API
12
Shader Model
5.1
5.0
OpenGL
4.5
4.5
OpenCL
1.1
Vulkan
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)
19 Mh/s
Laptop size
medium sized
large
Optimus
+
+
Display Port
1.2
Mosaic
+
nView Display Management
+
3D Stereo
+
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