Radeon HD 6870 vs Radeon HD 7990
If you are going to buy a new graphics card and are choosing between Radeon HD 6870 and Radeon HD 7990, 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 6870 stacks up against Radeon HD 7990, check out specs charts below.
Main Specs
Radeon HD 6870
Radeon HD 7990
Power consumption (TDP)
151 Watt
375 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
2x 8-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
3 GB
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 4x mini-DisplayPort
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Radeon HD 7990 has 148% more power consumption, than Radeon HD 6870.
Radeon HD 6870 is connected by PCIe 2.0 x16, and Radeon HD 7990 uses PCIe 3.0 x16 interface.
Radeon HD 7990 has 2 GB more memory, than Radeon HD 6870.
Both cards are used in Desktops.
Radeon HD 6870 is build with Terascale 2 architecture, and Radeon HD 7990 - with GCN 1.0.
Radeon HD 6870 is manufactured by 40 nm process technology, and Radeon HD 7990 - by 28 nm process technology.
Radeon HD 7990 is 87 mm longer, than Radeon HD 6870.
Memory clock speed of Radeon HD 7990 is 4950 MHz higher, than Radeon HD 6870.
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
35−40
ultra / 1080p
6−7
21−24
QHD / 1440p
1−2
16−18
4K / 2160p
−
10−11
low / 720p
24−27
60−65
medium / 1080p
12−14
40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 227% more, than Radeon HD 6870.
high / 1080p
18−20
55−60
ultra / 1080p
14−16
45−50
QHD / 1440p
1−2
35−40
4K / 2160p
−
18−20
low / 720p
35−40
100−110
medium / 1080p
20−22
60−65
The average gaming FPS of Radeon HD 7990 in Battlefield 5 is 244% more, than Radeon HD 6870.
low / 768p
45−50
50−55
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 7990 in Call of Duty: Warzone is 10% more, than Radeon HD 6870.
low / 768p
180−190
250−260
medium / 768p
140−150
220−230
ultra / 1080p
75−80
180−190
QHD / 1440p
40−45
110−120
4K / 2160p
30−33
70−75
high / 768p
110−120
210−220
The average gaming FPS of Radeon HD 7990 in Counter-Strike: Global Offensive is 78% more, than Radeon HD 6870.
low / 768p
55−60
60−65
ultra / 1080p
30−33
−
medium / 1080p
45−50
55−60
The average gaming FPS of Radeon HD 7990 in Cyberpunk 2077 is 15% more, than Radeon HD 6870.
low / 768p
95−100
120−130
medium / 768p
75−80
110−120
ultra / 1080p
50−55
100−110
The average gaming FPS of Radeon HD 7990 in Dota 2 is 53% more, than Radeon HD 6870.
high / 1080p
12−14
45−50
ultra / 1080p
12−14
40−45
QHD / 1440p
−
27−30
4K / 2160p
5−6
14−16
low / 720p
27−30
80−85
medium / 1080p
14−16
45−50
The average gaming FPS of Radeon HD 7990 in Far Cry 5 is 213% more, than Radeon HD 6870.
high / 1080p
20−22
60−65
ultra / 1080p
14−16
45−50
QHD / 1440p
−
27−30
4K / 2160p
−
27−30
low / 720p
80−85
180−190
medium / 1080p
35−40
110−120
The average gaming FPS of Radeon HD 7990 in Fortnite is 161% more, than Radeon HD 6870.
high / 1080p
18−20
60−65
ultra / 1080p
14−16
45−50
QHD / 1440p
5−6
30−35
4K / 2160p
−
24−27
low / 720p
40−45
100−110
medium / 1080p
21−24
65−70
The average gaming FPS of Radeon HD 7990 in Forza Horizon 4 is 215% more, than Radeon HD 6870.
low / 768p
70−75
140−150
medium / 768p
60−65
120−130
high / 1080p
21−24
70−75
ultra / 1080p
9−10
30−35
QHD / 1440p
0−1
21−24
The average gaming FPS of Radeon HD 7990 in Grand Theft Auto V is 126% more, than Radeon HD 6870.
high / 1080p
7−8
24−27
ultra / 1080p
5−6
20−22
QHD / 1440p
−
16−18
4K / 2160p
1−2
8−9
low / 720p
21−24
65−70
medium / 1080p
9−10
30−35
The average gaming FPS of Radeon HD 7990 in Metro Exodus is 244% more, than Radeon HD 6870.
low / 768p
100−110
130−140
ultra / 1080p
90−95
−
medium / 1080p
100−105
120−130
The average gaming FPS of Radeon HD 7990 in Minecraft is 26% more, than Radeon HD 6870.
high / 1080p
18−20
−
ultra / 1080p
16−18
14−16
low / 720p
45−50
100−110
medium / 1080p
21−24
18−20
The average gaming FPS of Radeon HD 7990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 58% more, than Radeon HD 6870.
high / 1080p
12−14
24−27
ultra / 1080p
8−9
16−18
QHD / 1440p
0−1
10−11
4K / 2160p
−
7−8
low / 720p
20−22
65−70
medium / 1080p
12−14
35−40
The average gaming FPS of Radeon HD 7990 in Red Dead Redemption 2 is 176% more, than Radeon HD 6870.
low / 768p
40−45
130−140
medium / 768p
24−27
85−90
high / 1080p
14−16
45−50
ultra / 1080p
8−9
24−27
4K / 2160p
7−8
16−18
The average gaming FPS of Radeon HD 7990 in The Witcher 3: Wild Hunt is 226% more, than Radeon HD 6870.
low / 768p
95−100
90−95
medium / 768p
55−60
60−65
ultra / 1080p
27−30
50−55
high / 768p
45−50
60−65
The average gaming FPS of Radeon HD 7990 in World of Tanks is 17% more, than Radeon HD 6870.
Full Specs
Radeon HD 6870
Radeon HD 7990
Architecture
Terascale 2
GCN 1.0
Code name
RV940 Barts
Malta
Type
Desktop
Desktop
Release date
22 October 2010
24 April 2013
Pipelines
1120
2048
Core clock speed
950 MHz
Boost Clock
900 MHz
1000 MHz
Transistor count
1,700 million
4,313 million
Manufacturing process technology
40 nm
28 nm
Texture fill rate
50.40
128.0
Floating-point performance
2,016.0 gflops
2x 4,096 gflops
Length
220 mm
307 mm
Memory bus width
256 Bit
384 Bit
Memory clock speed
1050 MHz
6000 MHz
Memory bandwidth
134.4 GB/s
288.0 GB/s
Shared memory
-
DirectX
12 (11_1)
Shader Model
5.0
5.1
OpenGL
4.4
4.6
OpenCL
1.2
1.2
Vulkan
1.2.131
Bus support
PCIe 2.0 x16
HDMI
+
Bitcoin / BTC (SHA256)
213 Mh/s
459 Mh/s
Eyefinity
+
Design
reference
CrossFire
+
Ethereum / ETH (DaggerHashimoto)
44 Mh/s
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