Radeon HD 7990 vs Radeon R6 M340DX
If you are going to buy a new graphics card and are choosing between Radeon HD 7990 and Radeon R6 M340DX, 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 7990 stacks up against Radeon R6 M340DX, check out specs charts below.
Radeon R6 M340DX is a Laptop Graphics Card
Note: Radeon R6 M340DX 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 R6 M340DX here:
Main Specs
Radeon HD 7990
Radeon R6 M340DX
Power consumption (TDP)
375 Watt
Interface
PCIe 3.0 x16
IGP
Supplementary power connectors
2x 8-pin
Memory type
GDDR5
DDR3
Maximum RAM amount
3 GB
Display Connectors
1x DVI, 4x mini-DisplayPort
No outputs
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Radeon HD 7990 is connected by PCIe 3.0 x16, and Radeon R6 M340DX uses IGP interface.
Radeon HD 7990 is used in Desktops, and Radeon R6 M340DX - in Laptops.
Radeon HD 7990 is build with GCN 1.0 architecture, and Radeon R6 M340DX - with GCN.
Radeon HD 7990 and Radeon R6 M340DX 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
35−40
2−3
ultra / 1080p
21−24
2−3
QHD / 1440p
16−18
0−1
4K / 2160p
10−11
−
low / 720p
60−65
10−11
medium / 1080p
40−45
3−4
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 925% more, than Radeon R6 M340DX.
high / 1080p
55−60
−
ultra / 1080p
45−50
5−6
QHD / 1440p
35−40
0−1
4K / 2160p
18−20
−
low / 720p
100−110
12−14
medium / 1080p
60−65
5−6
The average gaming FPS of Radeon HD 7990 in Battlefield 5 is 787% more, than Radeon R6 M340DX.
low / 768p
50−55
45−50
high / 1080p
−
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 7990 in Call of Duty: Warzone is 10% more, than Radeon R6 M340DX.
low / 768p
250−260
90−95
medium / 768p
220−230
65−70
ultra / 1080p
180−190
30−35
QHD / 1440p
110−120
21−24
4K / 2160p
70−75
−
high / 768p
210−220
45−50
The average gaming FPS of Radeon HD 7990 in Counter-Strike: Global Offensive is 282% more, than Radeon R6 M340DX.
low / 768p
60−65
55−60
ultra / 1080p
−
9−10
medium / 1080p
55−60
45−50
The average gaming FPS of Radeon HD 7990 in Cyberpunk 2077 is 15% more, than Radeon R6 M340DX.
low / 768p
120−130
60−65
medium / 768p
110−120
35−40
ultra / 1080p
100−110
18−20
The average gaming FPS of Radeon HD 7990 in Dota 2 is 194% more, than Radeon R6 M340DX.
high / 1080p
45−50
−
ultra / 1080p
40−45
4−5
QHD / 1440p
27−30
−
4K / 2160p
14−16
2−3
low / 720p
80−85
9−10
medium / 1080p
45−50
4−5
The average gaming FPS of Radeon HD 7990 in Far Cry 5 is 820% more, than Radeon R6 M340DX.
high / 1080p
60−65
−
ultra / 1080p
45−50
7−8
QHD / 1440p
27−30
−
4K / 2160p
27−30
−
low / 720p
180−190
40−45
medium / 1080p
110−120
8−9
The average gaming FPS of Radeon HD 7990 in Fortnite is 505% more, than Radeon R6 M340DX.
high / 1080p
60−65
6−7
ultra / 1080p
45−50
−
QHD / 1440p
30−35
0−1
4K / 2160p
24−27
−
low / 720p
100−110
12−14
medium / 1080p
65−70
7−8
The average gaming FPS of Radeon HD 7990 in Forza Horizon 4 is 766% more, than Radeon R6 M340DX.
low / 768p
140−150
35−40
medium / 768p
120−130
30−35
high / 1080p
70−75
4−5
ultra / 1080p
30−35
4−5
QHD / 1440p
21−24
0−1
The average gaming FPS of Radeon HD 7990 in Grand Theft Auto V is 389% more, than Radeon R6 M340DX.
high / 1080p
24−27
2−3
ultra / 1080p
20−22
1−2
QHD / 1440p
16−18
−
4K / 2160p
8−9
0−1
low / 720p
65−70
4−5
medium / 1080p
30−35
4−5
The average gaming FPS of Radeon HD 7990 in Metro Exodus is 1100% more, than Radeon R6 M340DX.
low / 768p
130−140
85−90
high / 1080p
−
75−80
ultra / 1080p
−
65−70
medium / 1080p
120−130
−
The average gaming FPS of Radeon HD 7990 in Minecraft is 55% more, than Radeon R6 M340DX.
high / 1080p
−
14−16
ultra / 1080p
14−16
12−14
low / 720p
100−110
20−22
medium / 1080p
18−20
16−18
The average gaming FPS of Radeon HD 7990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 170% more, than Radeon R6 M340DX.
high / 1080p
24−27
−
ultra / 1080p
16−18
−
QHD / 1440p
10−11
0−1
4K / 2160p
7−8
−
low / 720p
65−70
4−5
medium / 1080p
35−40
−
The average gaming FPS of Radeon HD 7990 in Red Dead Redemption 2 is 1575% more, than Radeon R6 M340DX.
low / 768p
130−140
10−12
medium / 768p
85−90
9−10
high / 1080p
45−50
5−6
ultra / 1080p
24−27
4−5
4K / 2160p
16−18
−
The average gaming FPS of Radeon HD 7990 in The Witcher 3: Wild Hunt is 942% more, than Radeon R6 M340DX.
low / 768p
90−95
75−80
medium / 768p
60−65
30−35
ultra / 1080p
50−55
10−12
high / 768p
60−65
24−27
The average gaming FPS of Radeon HD 7990 in World of Tanks is 86% more, than Radeon R6 M340DX.
Full Specs
Radeon HD 7990
Radeon R6 M340DX
Architecture
GCN 1.0
GCN
Code name
Malta
Jet
Type
Desktop
Laptop
Release date
24 April 2013
3 June 2015
Pipelines
2048
704
Core clock speed
950 MHz
Boost Clock
1000 MHz
1030 MHz
Transistor count
4,313 million
690 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
128.0
24.72
Floating-point performance
2x 4,096 gflops
Length
307 mm
Memory bus width
384 Bit
Memory clock speed
6000 MHz
Memory bandwidth
288.0 GB/s
Shared memory
-
DirectX
12 (11_1)
12 (11_1)
Shader Model
5.1
5.1
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.2.131
1.2.131
Bitcoin / BTC (SHA256)
459 Mh/s
Laptop size
medium sized
Ethereum / ETH (DaggerHashimoto)
44 Mh/s
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