GeForce GT 640 vs Radeon R9 M275
If you are going to buy a new graphics card and are choosing between GeForce GT 640 and Radeon R9 M275, 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 640 stacks up against Radeon R9 M275, check out specs charts below.
Radeon R9 M275 is a Laptop Graphics Card
Note: Radeon R9 M275 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 Radeon R9 M275 here:
Main Specs
GeForce GT 640
Radeon R9 M275
Power consumption (TDP)
65 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
4 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
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Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
Radeon R9 M275 has 2 GB more memory, than GeForce GT 640.
GeForce GT 640 is used in Desktops, and Radeon R9 M275 - in Laptops.
GeForce GT 640 is build with Kepler architecture, and Radeon R9 M275 - with GCN.
Core clock speed of Radeon R9 M275 is 23 MHz higher, than GeForce GT 640.
GeForce GT 640 and Radeon R9 M275 are manufactured by 28 nm process technology.
Memory clock speed of Radeon R9 M275 is 2718 MHz higher, than GeForce GT 640.
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
2−3
0−1
ultra / 1080p
1−2
−
QHD / 1440p
0−1
0−1
low / 720p
14−16
12−14
medium / 1080p
5−6
3−4
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 25% more, than Radeon R9 M275.
high / 1080p
7−8
5−6
ultra / 1080p
5−6
4−5
QHD / 1440p
0−1
0−1
low / 720p
20−22
16−18
medium / 1080p
7−8
5−6
The average gaming FPS of GeForce GT 640 in Battlefield 5 is 25% more, than Radeon R9 M275.
low / 768p
50−55
50−55
high / 1080p
35−40
45−50
QHD / 1440p
0−1
0−1
medium / 1080p
−
50−55
The average gaming FPS of Radeon R9 M275 in Call of Duty: Warzone is 11% more, than GeForce GT 640.
low / 768p
110−120
110−120
medium / 768p
90−95
90−95
ultra / 1080p
45−50
40−45
QHD / 1440p
24−27
24−27
4K / 2160p
18−20
18−20
high / 768p
65−70
65−70
The average gaming FPS of GeForce GT 640 in Counter-Strike: Global Offensive is 1% more, than Radeon R9 M275.
low / 768p
70−75
60−65
ultra / 1080p
21−24
18−20
medium / 1080p
45−50
50−55
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 6% more, than Radeon R9 M275.
low / 768p
70−75
70−75
medium / 768p
50−55
50−55
ultra / 1080p
27−30
24−27
The average gaming FPS of GeForce GT 640 in Dota 2 is 2% more, than Radeon R9 M275.
high / 1080p
3−4
1−2
ultra / 1080p
3−4
−
4K / 2160p
2−3
0−1
low / 720p
14−16
10−12
medium / 1080p
4−5
3−4
The average gaming FPS of GeForce GT 640 in Far Cry 5 is 40% more, than Radeon R9 M275.
high / 1080p
10−12
9−10
ultra / 1080p
5−6
5−6
QHD / 1440p
2−3
1−2
low / 720p
50−55
50−55
medium / 1080p
16−18
12−14
The average gaming FPS of GeForce GT 640 in Fortnite is 6% more, than Radeon R9 M275.
high / 1080p
6−7
6−7
ultra / 1080p
−
4−5
QHD / 1440p
4−5
0−1
4K / 2160p
2−3
−
low / 720p
21−24
18−20
medium / 1080p
9−10
7−8
The average gaming FPS of GeForce GT 640 in Forza Horizon 4 is 9% more, than Radeon R9 M275.
low / 768p
45−50
45−50
high / 1080p
7−8
7−8
ultra / 1080p
3−4
4−5
QHD / 1440p
0−1
0−1
medium / 720p
40−45
35−40
The average gaming FPS of GeForce GT 640 in Grand Theft Auto V is 4% more, than Radeon R9 M275.
high / 1080p
2−3
3−4
ultra / 1080p
0−1
1−2
4K / 2160p
0−1
0−1
low / 720p
8−9
7−8
medium / 1080p
4−5
4−5
GeForce GT 640 and Radeon R9 M275 have the same average FPS in Metro Exodus.
low / 768p
80−85
85−90
high / 1080p
−
70−75
ultra / 1080p
70−75
−
The average gaming FPS of Radeon R9 M275 in Minecraft is 6% more, than GeForce GT 640.
high / 1080p
−
14−16
ultra / 1080p
12−14
12−14
low / 720p
27−30
24−27
medium / 1080p
14−16
14−16
The average gaming FPS of GeForce GT 640 in PLAYERUNKNOWN'S BATTLEGROUNDS is 5% more, than Radeon R9 M275.
high / 1080p
6−7
−
ultra / 1080p
4−5
7−8
QHD / 1440p
0−1
0−1
low / 720p
7−8
8−9
The average gaming FPS of Radeon R9 M275 in Red Dead Redemption 2 is 33% more, than GeForce GT 640.
low / 768p
14−16
16−18
medium / 768p
10−11
12−14
high / 1080p
5−6
6−7
ultra / 1080p
4−5
5−6
4K / 2160p
0−1
−
The average gaming FPS of Radeon R9 M275 in The Witcher 3: Wild Hunt is 25% more, than GeForce GT 640.
low / 768p
70−75
85−90
medium / 768p
35−40
35−40
ultra / 1080p
16−18
14−16
high / 768p
30−35
30−33
The average gaming FPS of Radeon R9 M275 in World of Tanks is 7% more, than GeForce GT 640.
Full Specs
GeForce GT 640
Radeon R9 M275
Architecture
Kepler
GCN
Code name
GK107
Venus
Type
Desktop
Laptop
Release date
5 June 2012
1 August 2014
Pipelines
384
640
Core clock speed
902 MHz
925 MHz
Boost Clock
925 MHz
Transistor count
1,270 million
1,500 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
37.00
Floating-point performance
692.7 gflops
1,184 gflops
Length
145 mm
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
4500 MHz
Memory bandwidth
28.51 GB/s
64 GB/s
Shared memory
-
DirectX
12 (11_0)
12 (11_1)
Shader Model
5.1
5.1
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.1.126
1.2.131
CUDA
3.0
Bitcoin / BTC (SHA256)
24 Mh/s
122 Mh/s
Laptop size
large
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