Radeon R9 M280X vs Radeon R9 M390X
If you are going to buy a new graphics card and are choosing between Radeon R9 M280X and Radeon R9 M390X, 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 Radeon R9 M280X stacks up against Radeon R9 M390X, check out specs charts below.
Radeon R9 M280X and Radeon R9 M390X are Laptop Graphics Cards
Note: Radeon R9 M280X and Radeon R9 M390X 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 Radeon R9 M280X or Radeon R9 M390X here:
Main Specs
Radeon R9 M280X
Radeon R9 M390X
Power consumption (TDP)
100 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
Not Listed
GDDR5
Maximum RAM amount
4 GB
Display Connectors
No outputs
No outputs
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Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
Both cards are used in Laptops.
Radeon R9 M280X is build with GCN architecture, and Radeon R9 M390X - with GCN 3.
Core clock speed of Radeon R9 M280X is 177 MHz higher, than Radeon R9 M390X.
Radeon R9 M280X 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
4−5
27−30
The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 420% more, than Radeon R9 M280X.
high / 1080p
7−8
35−40
ultra / 1080p
5−6
30−35
QHD / 1440p
0−1
14−16
4K / 2160p
−
9−10
low / 720p
18−20
70−75
medium / 1080p
7−8
40−45
The average gaming FPS of Radeon R9 M390X in Battlefield 5 is 411% more, than Radeon R9 M280X.
low / 768p
50−55
50−55
high / 1080p
30−35
−
QHD / 1440p
0−1
0−1
Radeon R9 M280X 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
40−45
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 153% more, than Radeon R9 M280X.
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 Radeon R9 M280X.
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 Radeon R9 M280X.
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 Radeon R9 M280X.
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
14−16
75−80
The average gaming FPS of Radeon R9 M390X in Fortnite is 247% more, than Radeon R9 M280X.
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 Radeon R9 M280X.
low / 768p
45−50
110−120
medium / 768p
40−45
95−100
high / 1080p
7−8
45−50
ultra / 1080p
3−4
18−20
QHD / 1440p
0−1
9−10
The average gaming FPS of Radeon R9 M390X in Grand Theft Auto V is 176% more, than Radeon R9 M280X.
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 Radeon R9 M280X.
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 Radeon R9 M280X.
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 Radeon R9 M280X.
high / 1080p
−
16−18
ultra / 1080p
6−7
10−12
QHD / 1440p
−
3−4
4K / 2160p
−
2−3
low / 720p
8−9
40−45
medium / 1080p
7−8
21−24
The average gaming FPS of Radeon R9 M390X in Red Dead Redemption 2 is 257% more, than Radeon R9 M280X.
low / 768p
16−18
80−85
medium / 768p
10−12
50−55
high / 1080p
6−7
27−30
ultra / 1080p
4−5
16−18
4K / 2160p
2−3
9−10
The average gaming FPS of Radeon R9 M390X in The Witcher 3: Wild Hunt is 375% more, than Radeon R9 M280X.
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 Radeon R9 M280X.
Full Specs
Radeon R9 M280X
Radeon R9 M390X
Architecture
GCN
GCN 3
Code name
Saturn XT
Amethyst (XT) / Tonga
Type
Laptop
Laptop
Release date
1 February 2015
9 June 2015
Pipelines
896
2048
Core clock speed
900 MHz
723 MHz
Transistor count
2,080 million
5,000 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
61.60
92.54
Floating-point performance
1,792 gflops
2,961 gflops
Memory bus width
256 Bit
Memory bandwidth
96 GB/s
160.0 GB/s
Shared memory
-
-
Shader Model
6.3
6.3
OpenGL
4.4
4.4
OpenCL
Not Listed
Not Listed
Vulkan
+
FreeSync
+
+
Bus support
Not Listed
PCIe 3.0
Laptop size
large
large
Eyefinity
+
HD3D
+
+
PowerTune
+
+
DualGraphics
+
+
ZeroCore
+
+
Switchable graphics
+
+
Mantle
+
+
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