Radeon HD 6990 vs Radeon RX 540
If you are going to buy a new graphics card and are choosing between Radeon HD 6990 and Radeon RX 540, 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 RX 540, check out specs charts below.
Radeon RX 540 is a Laptop Graphics Card
Note: Radeon RX 540 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 RX 540 here:
Main Specs
Radeon HD 6990
Radeon RX 540
Power consumption (TDP)
375 Watt
65 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
1x 6-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Display Connectors
1x DVI, 4x mini-DisplayPort
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Radeon HD 6990 has 476% more power consumption, than Radeon RX 540.
Radeon HD 6990 is connected by PCIe 2.0 x16, and Radeon RX 540 uses PCIe 3.0 x16 interface.
Radeon RX 540 has 2 GB more memory, than Radeon HD 6990.
Radeon HD 6990 is used in Desktops, and Radeon RX 540 - in Laptops.
Radeon HD 6990 is build with TeraScale 3 architecture, and Radeon RX 540 - with Polaris.
Radeon HD 6990 is manufactured by 40 nm process technology, and Radeon RX 540 - by 14 nm process technology.
Memory clock speed of Radeon RX 540 is 1000 MHz higher, than Radeon HD 6990.
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
14−16
ultra / 1080p
9−10
8−9
QHD / 1440p
3−4
3−4
low / 720p
30−35
30−33
medium / 1080p
18−20
18−20
Radeon HD 6990 and Radeon RX 540 have the same average FPS in Assassin's Creed Odyssey.
high / 1080p
24−27
21−24
ultra / 1080p
21−24
20−22
QHD / 1440p
7−8
6−7
4K / 2160p
5−6
5−6
low / 720p
50−55
45−50
medium / 1080p
27−30
24−27
The average gaming FPS of Radeon HD 6990 in Battlefield 5 is 9% more, than Radeon RX 540.
low / 768p
45−50
45−50
QHD / 1440p
0−1
0−1
Radeon HD 6990 and Radeon RX 540 have the same average FPS in Call of Duty: Warzone.
low / 768p
210−220
200−210
medium / 768p
170−180
170−180
ultra / 1080p
95−100
90−95
QHD / 1440p
50−55
50−55
4K / 2160p
30−33
30−33
high / 768p
140−150
130−140
The average gaming FPS of Radeon HD 6990 in Counter-Strike: Global Offensive is 3% more, than Radeon RX 540.
low / 768p
55−60
55−60
ultra / 1080p
40−45
35−40
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon HD 6990 in Cyberpunk 2077 is 4% more, than Radeon RX 540.
low / 768p
110−120
100−110
medium / 768p
90−95
90−95
ultra / 1080p
60−65
60−65
The average gaming FPS of Radeon HD 6990 in Dota 2 is 4% more, than Radeon RX 540.
high / 1080p
18−20
16−18
ultra / 1080p
16−18
14−16
4K / 2160p
6−7
6−7
low / 720p
35−40
35−40
medium / 1080p
18−20
18−20
Radeon HD 6990 and Radeon RX 540 have the same average FPS in Far Cry 5.
high / 1080p
24−27
24−27
ultra / 1080p
18−20
18−20
QHD / 1440p
16−18
16−18
low / 720p
95−100
95−100
medium / 1080p
50−55
50−55
Radeon HD 6990 and Radeon RX 540 have the same average FPS in Fortnite.
high / 1080p
24−27
24−27
ultra / 1080p
20−22
18−20
QHD / 1440p
9−10
8−9
low / 720p
50−55
50−55
medium / 1080p
27−30
27−30
The average gaming FPS of Radeon HD 6990 in Forza Horizon 4 is 3% more, than Radeon RX 540.
low / 768p
85−90
80−85
medium / 768p
75−80
70−75
high / 1080p
30−33
27−30
ultra / 1080p
12−14
12−14
QHD / 1440p
3−4
2−3
The average gaming FPS of Radeon HD 6990 in Grand Theft Auto V is 7% more, than Radeon RX 540.
high / 1080p
9−10
9−10
ultra / 1080p
7−8
7−8
4K / 2160p
2−3
2−3
low / 720p
27−30
27−30
medium / 1080p
12−14
12−14
Radeon HD 6990 and Radeon RX 540 have the same average FPS in Metro Exodus.
low / 768p
110−120
110−120
ultra / 1080p
100−110
100−110
medium / 1080p
100−110
100−110
Radeon HD 6990 and Radeon RX 540 have the same average FPS in Minecraft.
high / 1080p
21−24
21−24
ultra / 1080p
18−20
16−18
low / 720p
55−60
55−60
medium / 1080p
24−27
24−27
The average gaming FPS of Radeon HD 6990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 3% more, than Radeon RX 540.
high / 1080p
14−16
14−16
ultra / 1080p
9−10
9−10
QHD / 1440p
0−1
0−1
low / 720p
27−30
27−30
medium / 1080p
16−18
16−18
Radeon HD 6990 and Radeon RX 540 have the same average FPS in Red Dead Redemption 2.
low / 768p
55−60
50−55
medium / 768p
30−35
30−35
high / 1080p
18−20
18−20
ultra / 1080p
10−12
10−11
4K / 2160p
8−9
8−9
The average gaming FPS of Radeon HD 6990 in The Witcher 3: Wild Hunt is 4% more, than Radeon RX 540.
low / 768p
100−110
100−105
medium / 768p
60−65
60−65
ultra / 1080p
35−40
30−35
high / 768p
50−55
50−55
The average gaming FPS of Radeon HD 6990 in World of Tanks is 3% more, than Radeon RX 540.
Full Specs
Radeon HD 6990
Radeon RX 540
Architecture
TeraScale 3
Polaris
Code name
Antilles
Polaris 12
Type
Desktop
Laptop
Release date
8 March 2011
21 March 2017
Pipelines
1536
512
Core clock speed
830 MHz
Boost Clock
1219 MHz
Transistor count
2,640 million
1,500 million
Manufacturing process technology
40 nm
14 nm
Texture fill rate
79.68
39.01
Floating-point performance
2x 2,549.8 gflops
1,248 gflops
Length
295 mm
Memory bus width
256 Bit
128 Bit
Memory clock speed
5000 MHz
6000 MHz
Memory bandwidth
160.0 GB/s
96 GB/s
Shared memory
-
DirectX
11.2 (11_0)
12.0
Shader Model
5.0
5.0
OpenGL
4.4
4.6
OpenCL
1.2
1.2
Vulkan
N/A
FreeSync
+
Bitcoin / BTC (SHA256)
265 Mh/s
Laptop size
large
Ethereum / ETH (DaggerHashimoto)
24 Mh/s
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