GeForce GT 640 vs Radeon R9 M390X
Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640 and Radeon R9 M390X. 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 640 and Radeon R9 M390X. 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.
Radeon R9 M390X is a Laptop Graphics Card
Note: Radeon R9 M390X 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 M390X here:
Main Specs
GeForce GT 640
Radeon R9 M390X
Power consumption (TDP)
65 Watt
100 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
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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Radeon R9 M390X has 53% more power consumption, than GeForce GT 640.
Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
Radeon R9 M390X has 2 GB more memory, than GeForce GT 640.
GeForce GT 640 is used in Desktops, and Radeon R9 M390X - in Laptops.
GeForce GT 640 is build with Kepler architecture, and Radeon R9 M390X - with GCN 3.
Core clock speed of GeForce GT 640 is 179 MHz higher, than Radeon R9 M390X.
GeForce GT 640 and Radeon R9 M390X are manufactured by 28 nm process technology.
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
21−24
ultra / 1080p
1−2
12−14
QHD / 1440p
0−1
8−9
4K / 2160p
−
5−6
low / 720p
14−16
40−45
medium / 1080p
5−6
27−30
The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 333% more, than GeForce GT 640.
high / 1080p
7−8
35−40
ultra / 1080p
5−6
30−35
QHD / 1440p
0−1
14−16
4K / 2160p
−
9−10
low / 720p
20−22
70−75
medium / 1080p
7−8
40−45
The average gaming FPS of Radeon R9 M390X in Battlefield 5 is 360% more, than GeForce GT 640.
low / 768p
50−55
50−55
high / 1080p
35−40
−
QHD / 1440p
0−1
0−1
GeForce GT 640 and Radeon R9 M390X have the same average FPS in Call of Duty: Warzone.
low / 768p
110−120
230−240
medium / 768p
90−95
210−220
ultra / 1080p
45−50
120−130
QHD / 1440p
24−27
100−110
4K / 2160p
18−20
55−60
high / 768p
65−70
170−180
The average gaming FPS of Radeon R9 M390X in Counter-Strike: Global Offensive is 149% more, than GeForce GT 640.
low / 768p
70−75
60−65
ultra / 1080p
21−24
55−60
medium / 1080p
45−50
55−60
The average gaming FPS of Radeon R9 M390X in Cyberpunk 2077 is 25% more, than GeForce GT 640.
low / 768p
70−75
120−130
medium / 768p
50−55
110−120
ultra / 1080p
27−30
85−90
The average gaming FPS of Radeon R9 M390X in Dota 2 is 113% more, than GeForce GT 640.
high / 1080p
3−4
27−30
ultra / 1080p
3−4
24−27
QHD / 1440p
−
20−22
4K / 2160p
2−3
9−10
low / 720p
14−16
55−60
medium / 1080p
4−5
30−33
The average gaming FPS of Radeon R9 M390X in Far Cry 5 is 500% more, than GeForce GT 640.
high / 1080p
10−12
35−40
ultra / 1080p
5−6
27−30
QHD / 1440p
2−3
16−18
low / 720p
50−55
130−140
medium / 1080p
16−18
75−80
The average gaming FPS of Radeon R9 M390X in Fortnite is 247% more, than GeForce GT 640.
high / 1080p
6−7
35−40
ultra / 1080p
−
27−30
QHD / 1440p
4−5
16−18
4K / 2160p
2−3
14−16
low / 720p
21−24
75−80
medium / 1080p
9−10
40−45
The average gaming FPS of Radeon R9 M390X in Forza Horizon 4 is 311% more, than GeForce GT 640.
low / 768p
45−50
110−120
medium / 768p
−
95−100
high / 1080p
7−8
45−50
ultra / 1080p
3−4
18−20
QHD / 1440p
0−1
9−10
medium / 720p
40−45
−
The average gaming FPS of Radeon R9 M390X in Grand Theft Auto V is 215% more, than GeForce GT 640.
high / 1080p
2−3
14−16
ultra / 1080p
0−1
10−12
QHD / 1440p
−
10−12
4K / 2160p
0−1
3−4
low / 720p
8−9
40−45
medium / 1080p
4−5
20−22
The average gaming FPS of Radeon R9 M390X in Metro Exodus is 420% more, than GeForce GT 640.
low / 768p
80−85
120−130
ultra / 1080p
70−75
−
medium / 1080p
−
110−120
The average gaming FPS of Radeon R9 M390X in Minecraft is 52% more, than GeForce GT 640.
ultra / 1080p
12−14
14−16
low / 720p
27−30
75−80
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon R9 M390X in PLAYERUNKNOWN'S BATTLEGROUNDS is 105% more, than GeForce GT 640.
high / 1080p
6−7
16−18
ultra / 1080p
4−5
10−12
QHD / 1440p
0−1
3−4
4K / 2160p
−
2−3
low / 720p
7−8
40−45
medium / 1080p
−
21−24
The average gaming FPS of Radeon R9 M390X in Red Dead Redemption 2 is 283% more, than GeForce GT 640.
low / 768p
14−16
80−85
medium / 768p
10−11
50−55
high / 1080p
5−6
27−30
ultra / 1080p
4−5
16−18
4K / 2160p
0−1
9−10
The average gaming FPS of Radeon R9 M390X in The Witcher 3: Wild Hunt is 462% more, than GeForce GT 640.
low / 768p
70−75
90−95
medium / 768p
35−40
60−65
ultra / 1080p
16−18
40−45
high / 768p
30−35
55−60
The average gaming FPS of Radeon R9 M390X in World of Tanks is 61% more, than GeForce GT 640.
Full Specs
GeForce GT 640
Radeon R9 M390X
Architecture
Kepler
GCN 3
Code name
GK107
Amethyst (XT) / Tonga
Type
Desktop
Laptop
Release date
5 June 2012
9 June 2015
Pipelines
384
2048
Core clock speed
902 MHz
723 MHz
Transistor count
1,270 million
5,000 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
92.54
Floating-point performance
692.7 gflops
2,961 gflops
Length
145 mm
Memory bus width
128 Bit
256 Bit
Memory clock speed
1782 MHz
Memory bandwidth
28.51 GB/s
160.0 GB/s
Shared memory
-
DirectX
12 (11_0)
Shader Model
5.1
6.3
OpenGL
4.6
4.4
OpenCL
1.2
Not Listed
Vulkan
1.1.126
+
CUDA
3.0
FreeSync
+
Bus support
PCIe 3.0
Bitcoin / BTC (SHA256)
24 Mh/s
Laptop size
large
Eyefinity
+
HD3D
+
PowerTune
+
DualGraphics
+
ZeroCore
+
Switchable graphics
+
Mantle
+
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