GeForce GT 645M vs Radeon R9 M390
When comparing GeForce GT 645M and Radeon R9 M390, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GT 645M and Radeon R9 M390 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
GeForce GT 645M and Radeon R9 M390 are Laptop Graphics Cards
Note: GeForce GT 645M and Radeon R9 M390 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 R9 M390 here:
Main Specs
GeForce GT 645M
Radeon R9 M390
Power consumption (TDP)
32 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 and Radeon R9 M390 have maximum RAM of 2 GB.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and Radeon R9 M390 - with GCN.
GeForce GT 645M and Radeon R9 M390 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
1−2
18−20
ultra / 1080p
0−1
10−11
QHD / 1440p
0−1
5−6
4K / 2160p
−
4−5
low / 720p
12−14
35−40
medium / 1080p
2−3
21−24
The average gaming FPS of Radeon R9 M390 in Assassin's Creed Odyssey is 420% more, than GeForce GT 645M.
high / 1080p
−
27−30
ultra / 1080p
3−4
24−27
QHD / 1440p
0−1
10−12
4K / 2160p
−
7−8
low / 720p
12−14
60−65
medium / 1080p
4−5
30−35
The average gaming FPS of Radeon R9 M390 in Battlefield 5 is 471% 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 Radeon R9 M390.
low / 768p
110−120
220−230
medium / 768p
85−90
190−200
ultra / 1080p
35−40
110−120
QHD / 1440p
−
65−70
4K / 2160p
10−11
35−40
high / 768p
60−65
150−160
The average gaming FPS of Radeon R9 M390 in Counter-Strike: Global Offensive is 133% more, than GeForce GT 645M.
low / 768p
70−75
55−60
ultra / 1080p
14−16
45−50
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon R9 M390 in Cyberpunk 2077 is 11% more, than GeForce GT 645M.
low / 768p
70−75
110−120
medium / 768p
45−50
100−110
ultra / 1080p
18−20
70−75
The average gaming FPS of Radeon R9 M390 in Dota 2 is 110% more, than GeForce GT 645M.
high / 1080p
2−3
21−24
ultra / 1080p
2−3
18−20
QHD / 1440p
−
16−18
4K / 2160p
0−1
7−8
low / 720p
10−11
45−50
medium / 1080p
3−4
21−24
The average gaming FPS of Radeon R9 M390 in Far Cry 5 is 575% more, than GeForce GT 645M.
high / 1080p
−
27−30
ultra / 1080p
5−6
21−24
QHD / 1440p
1−2
16−18
low / 720p
45−50
110−120
medium / 1080p
8−9
60−65
The average gaming FPS of Radeon R9 M390 in Fortnite is 260% more, than GeForce GT 645M.
high / 1080p
3−4
30−33
ultra / 1080p
−
21−24
QHD / 1440p
0−1
12−14
4K / 2160p
−
10−12
low / 720p
14−16
60−65
medium / 1080p
6−7
30−35
The average gaming FPS of Radeon R9 M390 in Forza Horizon 4 is 425% more, than GeForce GT 645M.
low / 768p
40−45
95−100
medium / 768p
−
85−90
high / 1080p
3−4
35−40
ultra / 1080p
2−3
14−16
QHD / 1440p
0−1
5−6
medium / 720p
35−40
−
The average gaming FPS of Radeon R9 M390 in Grand Theft Auto V is 212% more, than GeForce GT 645M.
high / 1080p
1−2
10−12
ultra / 1080p
0−1
9−10
4K / 2160p
0−1
3−4
low / 720p
3−4
35−40
medium / 1080p
2−3
14−16
The average gaming FPS of Radeon R9 M390 in Metro Exodus is 950% more, than GeForce GT 645M.
low / 768p
85−90
110−120
high / 1080p
55−60
−
medium / 1080p
−
110−120
The average gaming FPS of Radeon R9 M390 in Minecraft is 32% more, than GeForce GT 645M.
high / 1080p
14−16
24−27
ultra / 1080p
12−14
18−20
low / 720p
24−27
65−70
medium / 1080p
14−16
27−30
The average gaming FPS of Radeon R9 M390 in PLAYERUNKNOWN'S BATTLEGROUNDS is 105% more, than GeForce GT 645M.
high / 1080p
−
14−16
ultra / 1080p
3−4
10−11
QHD / 1440p
0−1
0−1
low / 720p
4−5
30−35
medium / 1080p
−
18−20
The average gaming FPS of Radeon R9 M390 in Red Dead Redemption 2 is 425% more, than GeForce GT 645M.
low / 768p
8−9
65−70
medium / 768p
7−8
40−45
high / 1080p
3−4
21−24
ultra / 1080p
3−4
12−14
4K / 2160p
0−1
9−10
The average gaming FPS of Radeon R9 M390 in The Witcher 3: Wild Hunt is 620% more, than GeForce GT 645M.
low / 768p
70−75
100−110
medium / 768p
35−40
65−70
ultra / 1080p
12−14
35−40
high / 768p
30−33
55−60
The average gaming FPS of Radeon R9 M390 in World of Tanks is 73% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Radeon R9 M390
Architecture
Kepler
GCN
Code name
N13P-GS
Pitcairn
Type
Laptop
Laptop
Release date
22 March 2012
9 June 2015
Pipelines
384
1024
Transistor count
1,270 million
5000 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
256 Bit
Memory clock speed
1800 MHz
Shared memory
-
-
DirectX
12 API
Shader Model
5.1
OpenGL
4.5
4.4
OpenCL
1.1
Not Listed
Vulkan
1.1.126
CUDA
+
FreeSync
+
CUDA cores
384
Bus support
PCI Express 2.0, PCI Express 3.0
PCIe 3.0
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
3D Blu-Ray
+
Bitcoin / BTC (SHA256)
19 Mh/s
242 Mh/s
Laptop size
medium sized
large
Optimus
+
Eyefinity
+
HD3D
+
PowerTune
+
DualGraphics
+
ZeroCore
+
Switchable graphics
+
Mantle
+
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