Radeon HD 6870 vs Radeon R9 M390X
When choosing between Radeon HD 6870 and Radeon R9 M390X, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Radeon HD 6870 and Radeon R9 M390X.
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
Radeon HD 6870
Radeon R9 M390X
Power consumption (TDP)
151 Watt
100 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
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Radeon HD 6870 has 51% more power consumption, than Radeon R9 M390X.
Radeon HD 6870 is connected by PCIe 2.0 x16, and Radeon R9 M390X uses PCIe 3.0 x16 interface.
Radeon R9 M390X has 3 GB more memory, than Radeon HD 6870.
Radeon HD 6870 is used in Desktops, and Radeon R9 M390X - in Laptops.
Radeon HD 6870 is build with Terascale 2 architecture, and Radeon R9 M390X - with GCN 3.
Radeon HD 6870 is manufactured by 40 nm process technology, and Radeon R9 M390X - 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
10−12
21−24
ultra / 1080p
6−7
12−14
QHD / 1440p
1−2
8−9
4K / 2160p
−
5−6
low / 720p
24−27
40−45
medium / 1080p
12−14
27−30
The average gaming FPS of Radeon R9 M390X in Assassin's Creed Odyssey is 109% more, than Radeon HD 6870.
high / 1080p
18−20
35−40
ultra / 1080p
14−16
30−35
QHD / 1440p
1−2
14−16
4K / 2160p
−
9−10
low / 720p
35−40
70−75
medium / 1080p
20−22
40−45
The average gaming FPS of Radeon R9 M390X in Battlefield 5 is 122% more, than Radeon HD 6870.
low / 768p
45−50
50−55
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon R9 M390X in Call of Duty: Warzone is 10% more, than Radeon HD 6870.
low / 768p
180−190
230−240
medium / 768p
140−150
210−220
ultra / 1080p
75−80
120−130
QHD / 1440p
40−45
100−110
4K / 2160p
30−33
55−60
high / 768p
110−120
170−180
The average gaming FPS of Radeon R9 M390X in Counter-Strike: Global Offensive is 53% more, than Radeon HD 6870.
low / 768p
55−60
60−65
ultra / 1080p
30−33
55−60
medium / 1080p
45−50
55−60
The average gaming FPS of Radeon R9 M390X in Cyberpunk 2077 is 31% more, than Radeon HD 6870.
low / 768p
95−100
120−130
medium / 768p
75−80
110−120
ultra / 1080p
50−55
85−90
The average gaming FPS of Radeon R9 M390X in Dota 2 is 45% more, than Radeon HD 6870.
high / 1080p
12−14
27−30
ultra / 1080p
12−14
24−27
QHD / 1440p
−
20−22
4K / 2160p
5−6
9−10
low / 720p
27−30
55−60
medium / 1080p
14−16
30−33
The average gaming FPS of Radeon R9 M390X in Far Cry 5 is 100% more, than Radeon HD 6870.
high / 1080p
20−22
35−40
ultra / 1080p
14−16
27−30
QHD / 1440p
−
16−18
low / 720p
80−85
130−140
medium / 1080p
35−40
75−80
The average gaming FPS of Radeon R9 M390X in Fortnite is 76% more, than Radeon HD 6870.
high / 1080p
18−20
35−40
ultra / 1080p
14−16
27−30
QHD / 1440p
5−6
16−18
4K / 2160p
−
14−16
low / 720p
40−45
75−80
medium / 1080p
21−24
40−45
The average gaming FPS of Radeon R9 M390X in Forza Horizon 4 is 100% more, than Radeon HD 6870.
low / 768p
70−75
110−120
medium / 768p
60−65
95−100
high / 1080p
21−24
45−50
ultra / 1080p
9−10
18−20
QHD / 1440p
0−1
9−10
The average gaming FPS of Radeon R9 M390X in Grand Theft Auto V is 68% more, than Radeon HD 6870.
high / 1080p
7−8
14−16
ultra / 1080p
5−6
10−12
QHD / 1440p
−
10−12
4K / 2160p
1−2
3−4
low / 720p
21−24
40−45
medium / 1080p
9−10
20−22
The average gaming FPS of Radeon R9 M390X in Metro Exodus is 100% more, than Radeon HD 6870.
low / 768p
100−110
120−130
ultra / 1080p
90−95
−
medium / 1080p
100−105
110−120
The average gaming FPS of Radeon R9 M390X in Minecraft is 16% more, than Radeon HD 6870.
high / 1080p
18−20
−
ultra / 1080p
16−18
14−16
low / 720p
45−50
75−80
medium / 1080p
21−24
18−20
The average gaming FPS of Radeon R9 M390X in PLAYERUNKNOWN'S BATTLEGROUNDS is 27% more, than Radeon HD 6870.
high / 1080p
12−14
16−18
ultra / 1080p
8−9
10−12
QHD / 1440p
0−1
3−4
4K / 2160p
−
2−3
low / 720p
20−22
40−45
medium / 1080p
12−14
21−24
The average gaming FPS of Radeon R9 M390X in Red Dead Redemption 2 is 76% more, than Radeon HD 6870.
low / 768p
40−45
80−85
medium / 768p
24−27
50−55
high / 1080p
14−16
27−30
ultra / 1080p
8−9
16−18
4K / 2160p
7−8
9−10
The average gaming FPS of Radeon R9 M390X in The Witcher 3: Wild Hunt is 100% more, than Radeon HD 6870.
low / 768p
95−100
90−95
medium / 768p
55−60
60−65
ultra / 1080p
27−30
40−45
high / 768p
45−50
55−60
The average gaming FPS of Radeon R9 M390X in World of Tanks is 10% more, than Radeon HD 6870.
Full Specs
Radeon HD 6870
Radeon R9 M390X
Architecture
Terascale 2
GCN 3
Code name
RV940 Barts
Amethyst (XT) / Tonga
Type
Desktop
Laptop
Release date
22 October 2010
9 June 2015
Pipelines
1120
2048
Core clock speed
723 MHz
Boost Clock
900 MHz
Transistor count
1,700 million
5,000 million
Manufacturing process technology
40 nm
28 nm
Texture fill rate
50.40
92.54
Floating-point performance
2,016.0 gflops
2,961 gflops
Length
220 mm
Memory bus width
256 Bit
256 Bit
Memory clock speed
1050 MHz
Memory bandwidth
134.4 GB/s
160.0 GB/s
Shared memory
-
-
Shader Model
5.0
6.3
OpenGL
4.4
4.4
OpenCL
1.2
Not Listed
Vulkan
+
FreeSync
+
Bus support
PCIe 2.0 x16
PCIe 3.0
HDMI
+
Bitcoin / BTC (SHA256)
213 Mh/s
Laptop size
large
Eyefinity
+
+
HD3D
+
PowerTune
+
DualGraphics
+
ZeroCore
+
Switchable graphics
+
Mantle
+
Design
reference
CrossFire
+
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