GeForce GT 640 vs Radeon RX 550X
In this comparison between GeForce GT 640 and Radeon RX 550X you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640 will be the best choice, for others Radeon RX 550X will be their preference. Study the comparison tables below and make your choice.
Radeon RX 550X
Main Specs
GeForce GT 640
Radeon RX 550X
Power consumption (TDP)
65 Watt
50 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
None
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
4 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
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GeForce GT 640 has 30% more power consumption, than Radeon RX 550X.
GeForce GT 640 is connected by PCIe 3.0 x16, and Radeon RX 550X uses PCIe 3.0 x8 interface.
Radeon RX 550X has 2 GB more memory, than GeForce GT 640.
Both cards are used in Desktops.
GeForce GT 640 is build with Kepler architecture, and Radeon RX 550X - with GCN 4.0.
Core clock speed of Radeon RX 550X is 198 MHz higher, than GeForce GT 640.
GeForce GT 640 is manufactured by 28 nm process technology, and Radeon RX 550X - by 14 nm process technology.
Both graphics cards are the same length of 145 mm.
Memory clock speed of Radeon RX 550X is 4218 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
10−11
ultra / 1080p
1−2
6−7
QHD / 1440p
0−1
0−1
low / 720p
14−16
21−24
medium / 1080p
5−6
12−14
The average gaming FPS of Radeon RX 550X in Assassin's Creed Odyssey is 116% more, than GeForce GT 640.
high / 1080p
7−8
16−18
ultra / 1080p
5−6
14−16
QHD / 1440p
0−1
0−1
low / 720p
20−22
35−40
medium / 1080p
7−8
18−20
The average gaming FPS of Radeon RX 550X in Battlefield 5 is 120% more, than GeForce GT 640.
low / 768p
50−55
45−50
high / 1080p
35−40
−
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 640 in Call of Duty: Warzone is 10% more, than Radeon RX 550X.
low / 768p
110−120
170−180
medium / 768p
90−95
140−150
ultra / 1080p
45−50
70−75
QHD / 1440p
24−27
40−45
4K / 2160p
18−20
30−33
high / 768p
65−70
100−110
The average gaming FPS of Radeon RX 550X in Counter-Strike: Global Offensive is 55% more, than GeForce GT 640.
low / 768p
70−75
55−60
ultra / 1080p
21−24
27−30
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 6% more, than Radeon RX 550X.
low / 768p
70−75
90−95
medium / 768p
50−55
75−80
ultra / 1080p
27−30
45−50
The average gaming FPS of Radeon RX 550X in Dota 2 is 41% more, than GeForce GT 640.
high / 1080p
3−4
12−14
ultra / 1080p
3−4
10−12
4K / 2160p
2−3
4−5
low / 720p
14−16
27−30
medium / 1080p
4−5
12−14
The average gaming FPS of Radeon RX 550X in Far Cry 5 is 180% more, than GeForce GT 640.
high / 1080p
10−12
18−20
ultra / 1080p
5−6
14−16
QHD / 1440p
2−3
−
low / 720p
50−55
75−80
medium / 1080p
16−18
35−40
The average gaming FPS of Radeon RX 550X in Fortnite is 76% more, than GeForce GT 640.
high / 1080p
6−7
16−18
ultra / 1080p
−
14−16
QHD / 1440p
4−5
4−5
4K / 2160p
2−3
−
low / 720p
21−24
35−40
medium / 1080p
9−10
20−22
The average gaming FPS of Radeon RX 550X in Forza Horizon 4 is 100% more, than GeForce GT 640.
low / 768p
45−50
65−70
medium / 768p
−
55−60
high / 1080p
7−8
18−20
ultra / 1080p
3−4
8−9
QHD / 1440p
0−1
0−1
medium / 720p
40−45
−
The average gaming FPS of Radeon RX 550X in Grand Theft Auto V is 63% more, than GeForce GT 640.
high / 1080p
2−3
6−7
ultra / 1080p
0−1
5−6
4K / 2160p
0−1
1−2
low / 720p
8−9
18−20
medium / 1080p
4−5
9−10
The average gaming FPS of Radeon RX 550X in Metro Exodus is 120% more, than GeForce GT 640.
low / 768p
80−85
100−110
ultra / 1080p
70−75
90−95
medium / 1080p
−
95−100
The average gaming FPS of Radeon RX 550X in Minecraft is 27% more, than GeForce GT 640.
high / 1080p
−
18−20
ultra / 1080p
12−14
14−16
low / 720p
27−30
40−45
medium / 1080p
14−16
20−22
The average gaming FPS of Radeon RX 550X in PLAYERUNKNOWN'S BATTLEGROUNDS is 44% more, than GeForce GT 640.
high / 1080p
6−7
12−14
ultra / 1080p
4−5
8−9
QHD / 1440p
0−1
0−1
low / 720p
7−8
18−20
medium / 1080p
−
12−14
The average gaming FPS of Radeon RX 550X in Red Dead Redemption 2 is 116% more, than GeForce GT 640.
low / 768p
14−16
35−40
medium / 768p
10−11
21−24
high / 1080p
5−6
12−14
ultra / 1080p
4−5
8−9
4K / 2160p
0−1
7−8
The average gaming FPS of Radeon RX 550X in The Witcher 3: Wild Hunt is 150% more, than GeForce GT 640.
low / 768p
70−75
90−95
medium / 768p
35−40
50−55
ultra / 1080p
16−18
24−27
high / 768p
30−35
45−50
The average gaming FPS of Radeon RX 550X in World of Tanks is 38% more, than GeForce GT 640.
Full Specs
GeForce GT 640
Radeon RX 550X
Architecture
Kepler
GCN 4.0
Code name
GK107
Lexa
Type
Desktop
Desktop
Release date
5 June 2012
16 December 2018
Pipelines
384
512
Core clock speed
902 MHz
1100 MHz
Boost Clock
1183 MHz
Transistor count
1,270 million
2,200 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
28.86
37.86
Floating-point performance
692.7 gflops
1,211 gflops
Length
145 mm
145 mm
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
6000 MHz
Memory bandwidth
28.51 GB/s
96 GB/s
DirectX
12 (11_0)
12 (12_0)
Shader Model
5.1
6.4
OpenGL
4.6
4.6
OpenCL
1.2
2.0
Vulkan
1.1.126
1.2.131
CUDA
3.0
Bitcoin / BTC (SHA256)
24 Mh/s
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