GeForce GT 645M vs Radeon RX 640
Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and Radeon RX 640. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 645M and Radeon RX 640. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
GeForce GT 645M and Radeon RX 640 are Laptop Graphics Cards
Note: GeForce GT 645M and Radeon RX 640 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 Radeon RX 640 here:
Main Specs
GeForce GT 645M
Radeon RX 640
Power consumption (TDP)
32 Watt
50 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
Check Price
Check Price
Radeon RX 640 has 56% more power consumption, than GeForce GT 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
Radeon RX 640 has 2 GB more memory, than GeForce GT 645M.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and Radeon RX 640 - with Polaris.
GeForce GT 645M is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
Memory clock speed of Radeon RX 640 is 4200 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
5−6
ultra / 1080p
0−1
3−4
QHD / 1440p
0−1
2−3
low / 720p
12−14
16−18
medium / 1080p
2−3
7−8
The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 100% more, than GeForce GT 645M.
high / 1080p
−
10−12
ultra / 1080p
3−4
8−9
QHD / 1440p
0−1
0−1
low / 720p
12−14
24−27
medium / 1080p
4−5
10−12
The average gaming FPS of Radeon RX 640 in Battlefield 5 is 114% more, than GeForce GT 645M.
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 645M in Call of Duty: Warzone is 11% more, than Radeon RX 640.
low / 768p
110−120
130−140
medium / 768p
85−90
100−110
ultra / 1080p
35−40
50−55
QHD / 1440p
−
27−30
4K / 2160p
10−11
12−14
high / 768p
60−65
80−85
The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 24% more, than GeForce GT 645M.
low / 768p
70−75
50−55
ultra / 1080p
14−16
18−20
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 15% more, than Radeon RX 640.
low / 768p
70−75
80−85
medium / 768p
45−50
55−60
ultra / 1080p
18−20
30−35
The average gaming FPS of Radeon RX 640 in Dota 2 is 23% more, than GeForce GT 645M.
high / 1080p
2−3
7−8
ultra / 1080p
2−3
5−6
4K / 2160p
0−1
5−6
low / 720p
10−11
18−20
medium / 1080p
3−4
8−9
The average gaming FPS of Radeon RX 640 in Far Cry 5 is 150% more, than GeForce GT 645M.
high / 1080p
−
7−8
ultra / 1080p
5−6
0−1
QHD / 1440p
1−2
0−1
low / 720p
45−50
60−65
medium / 1080p
8−9
18−20
The average gaming FPS of Radeon RX 640 in Fortnite is 42% more, than GeForce GT 645M.
high / 1080p
3−4
10−11
QHD / 1440p
0−1
−
4K / 2160p
−
8−9
low / 720p
14−16
24−27
medium / 1080p
6−7
12−14
The average gaming FPS of Radeon RX 640 in Forza Horizon 4 is 100% more, than GeForce GT 645M.
low / 768p
40−45
50−55
high / 1080p
3−4
10−12
ultra / 1080p
2−3
5−6
QHD / 1440p
0−1
−
medium / 720p
35−40
45−50
The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 38% more, than GeForce GT 645M.
high / 1080p
1−2
3−4
ultra / 1080p
0−1
1−2
4K / 2160p
0−1
−
low / 720p
3−4
10−11
medium / 1080p
2−3
5−6
The average gaming FPS of Radeon RX 640 in Metro Exodus is 200% more, than GeForce GT 645M.
low / 768p
85−90
90−95
high / 1080p
55−60
−
ultra / 1080p
−
80−85
The average gaming FPS of Radeon RX 640 in Minecraft is 5% more, than GeForce GT 645M.
high / 1080p
14−16
6−7
ultra / 1080p
12−14
2−3
4K / 2160p
−
0−1
low / 720p
24−27
27−30
medium / 1080p
14−16
10−11
The average gaming FPS of GeForce GT 645M in PLAYERUNKNOWN'S BATTLEGROUNDS is 41% more, than Radeon RX 640.
ultra / 1080p
3−4
−
QHD / 1440p
0−1
−
low / 720p
4−5
10−12
medium / 1080p
−
9−10
The average gaming FPS of Radeon RX 640 in Red Dead Redemption 2 is 175% more, than GeForce GT 645M.
low / 768p
8−9
21−24
medium / 768p
7−8
14−16
high / 1080p
3−4
6−7
ultra / 1080p
3−4
4−5
4K / 2160p
0−1
3−4
The average gaming FPS of Radeon RX 640 in The Witcher 3: Wild Hunt is 140% more, than GeForce GT 645M.
low / 768p
70−75
75−80
medium / 768p
35−40
40−45
ultra / 1080p
12−14
18−20
high / 768p
30−33
35−40
The average gaming FPS of Radeon RX 640 in World of Tanks is 15% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Radeon RX 640
Architecture
Kepler
Polaris
Code name
N13P-GS
Polaris 12
Type
Laptop
Laptop
Release date
22 March 2012
12 August 2019
Pipelines
384
640
Core clock speed
1218 MHz
Boost Clock
1218 MHz
Transistor count
1,270 million
2,200 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
22.7 billion/sec
38.98
Floating-point performance
544.5 gflops
Memory bus width
128bit
64 Bit
Memory clock speed
1800 MHz
6000 MHz
Memory bandwidth
112.0 GB/s
Shared memory
-
-
DirectX
12 API
12 (12_0)
Shader Model
5.1
6.4
OpenGL
4.5
4.6
OpenCL
1.1
2.0
Vulkan
1.1.126
1.2.131
CUDA
+
FreeSync
+
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
+
Check Price
Check Price
