Radeon HD 6990 vs Radeon R7 M340
If you are going to buy a new graphics card and are choosing between Radeon HD 6990 and Radeon R7 M340, 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 HD 6990 stacks up against Radeon R7 M340, check out specs charts below.
Radeon R7 M340 is a Laptop Graphics Card
Note: Radeon R7 M340 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 R7 M340 here:
Main Specs
Radeon HD 6990
Radeon R7 M340
Power consumption (TDP)
375 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 8-pin
None
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Display Connectors
1x DVI, 4x mini-DisplayPort
No outputs
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Radeon HD 6990 is connected by PCIe 2.0 x16, and Radeon R7 M340 uses PCIe 3.0 x8 interface.
Radeon R7 M340 has 2 GB more memory, than Radeon HD 6990.
Radeon HD 6990 is used in Desktops, and Radeon R7 M340 - in Laptops.
Radeon HD 6990 is build with TeraScale 3 architecture, and Radeon R7 M340 - with GCN.
Core clock speed of Radeon R7 M340 is 191 MHz higher, than Radeon HD 6990.
Radeon HD 6990 is manufactured by 40 nm process technology, and Radeon R7 M340 - by 28 nm process technology.
Memory clock speed of Radeon HD 6990 is 4000 MHz higher, than Radeon R7 M340.
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
14−16
0−1
ultra / 1080p
9−10
−
QHD / 1440p
3−4
0−1
low / 720p
30−35
1−2
medium / 1080p
18−20
0−1
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 3100% more, than Radeon R7 M340.
high / 1080p
24−27
−
ultra / 1080p
21−24
−
QHD / 1440p
7−8
0−1
4K / 2160p
5−6
−
low / 720p
50−55
0−1
medium / 1080p
27−30
−
low / 768p
45−50
50−55
high / 1080p
−
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon R7 M340 in Call of Duty: Warzone is 10% more, than Radeon HD 6990.
low / 768p
210−220
60−65
medium / 768p
170−180
27−30
ultra / 1080p
95−100
7−8
QHD / 1440p
50−55
−
4K / 2160p
30−33
−
high / 768p
140−150
16−18
The average gaming FPS of Radeon HD 6990 in Counter-Strike: Global Offensive is 464% more, than Radeon R7 M340.
low / 768p
55−60
70−75
ultra / 1080p
40−45
0−1
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon R7 M340 in Cyberpunk 2077 is 15% more, than Radeon HD 6990.
low / 768p
110−120
45−50
medium / 768p
90−95
10−11
ultra / 1080p
60−65
0−1
The average gaming FPS of Radeon HD 6990 in Dota 2 is 255% more, than Radeon R7 M340.
high / 1080p
18−20
−
ultra / 1080p
16−18
−
4K / 2160p
6−7
−
low / 720p
35−40
0−1
medium / 1080p
18−20
−
high / 1080p
24−27
−
ultra / 1080p
18−20
−
QHD / 1440p
16−18
−
low / 720p
95−100
21−24
medium / 1080p
50−55
0−1
The average gaming FPS of Radeon HD 6990 in Fortnite is 340% more, than Radeon R7 M340.
high / 1080p
24−27
0−1
ultra / 1080p
20−22
−
QHD / 1440p
9−10
0−1
low / 720p
50−55
0−1
medium / 1080p
27−30
0−1
low / 768p
85−90
18−20
medium / 768p
75−80
−
high / 1080p
30−33
0−1
ultra / 1080p
12−14
−
QHD / 1440p
3−4
0−1
medium / 720p
−
12−14
The average gaming FPS of Radeon HD 6990 in Grand Theft Auto V is 357% more, than Radeon R7 M340.
high / 1080p
9−10
−
ultra / 1080p
7−8
−
4K / 2160p
2−3
−
low / 720p
27−30
0−1
medium / 1080p
12−14
−
low / 768p
110−120
75−80
high / 1080p
−
27−30
ultra / 1080p
100−110
−
medium / 1080p
100−110
−
The average gaming FPS of Radeon HD 6990 in Minecraft is 49% more, than Radeon R7 M340.
high / 1080p
21−24
−
ultra / 1080p
18−20
−
low / 720p
55−60
8−9
medium / 1080p
24−27
−
The average gaming FPS of Radeon HD 6990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 612% more, than Radeon R7 M340.
high / 1080p
14−16
−
ultra / 1080p
9−10
−
QHD / 1440p
0−1
−
low / 720p
27−30
0−1
medium / 1080p
16−18
−
low / 768p
55−60
0−1
medium / 768p
30−35
−
high / 1080p
18−20
−
ultra / 1080p
10−12
−
4K / 2160p
8−9
−
low / 768p
100−110
45−50
medium / 768p
60−65
14−16
ultra / 1080p
35−40
0−1
high / 768p
50−55
12−14
The average gaming FPS of Radeon HD 6990 in World of Tanks is 192% more, than Radeon R7 M340.
Full Specs
Radeon HD 6990
Radeon R7 M340
Architecture
TeraScale 3
GCN
Code name
Antilles
Meso Pro DDR3
Type
Desktop
Laptop
Release date
8 March 2011
16 June 2015
Pipelines
1536
320
Core clock speed
830 MHz
1021 MHz
Boost Clock
1021 MHz
Transistor count
2,640 million
950 million
Manufacturing process technology
40 nm
28 nm
Texture fill rate
79.68
17.16
Floating-point performance
2x 2,549.8 gflops
549.1 gflops
Length
295 mm
Memory bus width
256 Bit
128 Bit
Memory clock speed
5000 MHz
1000 MHz
Memory bandwidth
160.0 GB/s
16 GB/s
Shared memory
-
DirectX
11.2 (11_0)
Shader Model
5.0
5.1
OpenGL
4.4
4.4
OpenCL
1.2
Not Listed
Vulkan
N/A
+
FreeSync
+
Bus support
PCIe 3.0
Bitcoin / BTC (SHA256)
265 Mh/s
74 Mh/s
Eyefinity
+
HD3D
+
PowerTune
+
DualGraphics
+
ZeroCore
+
Switchable graphics
+
Mantle
+
Ethereum / ETH (DaggerHashimoto)
24 Mh/s
Compute units
6
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