Radeon HD 6990 vs Radeon Pro 555X
In this comparison between Radeon HD 6990 and Radeon Pro 555X you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Radeon HD 6990 will be the best choice, for others Radeon Pro 555X will be their preference. Study the comparison tables below and make your choice.
Radeon Pro 555X is a Laptop Graphics Card
Note: Radeon Pro 555X 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 Pro 555X here:
Main Specs
Radeon HD 6990
Radeon Pro 555X
Power consumption (TDP)
375 Watt
75 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 8-pin
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
1x DVI, 4x mini-DisplayPort
No outputs
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Radeon HD 6990 has 400% more power consumption, than Radeon Pro 555X.
Radeon HD 6990 is connected by PCIe 2.0 x16, and Radeon Pro 555X uses PCIe 3.0 x8 interface.
Radeon HD 6990 and Radeon Pro 555X have maximum RAM of 2 GB.
Radeon HD 6990 is used in Desktops, and Radeon Pro 555X - in Mobile workstations.
Radeon HD 6990 is build with TeraScale 3 architecture, and Radeon Pro 555X - with Polaris.
Core clock speed of Radeon Pro 555X is 25 MHz higher, than Radeon HD 6990.
Radeon HD 6990 is manufactured by 40 nm process technology, and Radeon Pro 555X - by 14 nm process technology.
Memory clock speed of Radeon Pro 555X is 80 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
16−18
ultra / 1080p
9−10
10−11
QHD / 1440p
3−4
4−5
4K / 2160p
−
4−5
low / 720p
30−35
30−35
medium / 1080p
18−20
21−24
The average gaming FPS of Radeon Pro 555X in Assassin's Creed Odyssey is 13% more, than Radeon HD 6990.
high / 1080p
24−27
24−27
ultra / 1080p
21−24
21−24
QHD / 1440p
7−8
10−11
4K / 2160p
5−6
6−7
low / 720p
50−55
55−60
medium / 1080p
27−30
30−33
The average gaming FPS of Radeon Pro 555X in Battlefield 5 is 8% more, than Radeon HD 6990.
low / 768p
45−50
45−50
QHD / 1440p
0−1
0−1
Radeon HD 6990 and Radeon Pro 555X have the same average FPS in Call of Duty: Warzone.
low / 768p
210−220
220−230
medium / 768p
170−180
190−200
ultra / 1080p
95−100
100−110
QHD / 1440p
50−55
60−65
4K / 2160p
30−33
30−35
high / 768p
140−150
150−160
The average gaming FPS of Radeon Pro 555X in Counter-Strike: Global Offensive is 8% more, than Radeon HD 6990.
low / 768p
55−60
55−60
ultra / 1080p
40−45
40−45
medium / 1080p
45−50
45−50
Radeon HD 6990 and Radeon Pro 555X have the same average FPS in Cyberpunk 2077.
low / 768p
110−120
110−120
medium / 768p
90−95
95−100
ultra / 1080p
60−65
65−70
The average gaming FPS of Radeon Pro 555X in Dota 2 is 3% more, than Radeon HD 6990.
high / 1080p
18−20
20−22
ultra / 1080p
16−18
18−20
QHD / 1440p
−
16−18
4K / 2160p
6−7
6−7
low / 720p
35−40
40−45
medium / 1080p
18−20
21−24
The average gaming FPS of Radeon Pro 555X in Far Cry 5 is 15% more, than Radeon HD 6990.
high / 1080p
24−27
27−30
ultra / 1080p
18−20
21−24
QHD / 1440p
16−18
16−18
low / 720p
95−100
100−110
medium / 1080p
50−55
55−60
The average gaming FPS of Radeon Pro 555X in Fortnite is 9% more, than Radeon HD 6990.
high / 1080p
24−27
27−30
ultra / 1080p
20−22
21−24
QHD / 1440p
9−10
10−11
4K / 2160p
−
10−11
low / 720p
50−55
55−60
medium / 1080p
27−30
30−35
The average gaming FPS of Radeon Pro 555X in Forza Horizon 4 is 11% more, than Radeon HD 6990.
low / 768p
85−90
90−95
medium / 768p
75−80
80−85
high / 1080p
30−33
30−35
ultra / 1080p
12−14
12−14
QHD / 1440p
3−4
4−5
The average gaming FPS of Radeon Pro 555X in Grand Theft Auto V is 7% more, than Radeon HD 6990.
high / 1080p
9−10
10−11
ultra / 1080p
7−8
8−9
4K / 2160p
2−3
3−4
low / 720p
27−30
30−35
medium / 1080p
12−14
14−16
The average gaming FPS of Radeon Pro 555X in Metro Exodus is 16% more, than Radeon HD 6990.
low / 768p
110−120
110−120
ultra / 1080p
100−110
−
medium / 1080p
100−110
100−110
Radeon HD 6990 and Radeon Pro 555X have the same average FPS in Minecraft.
high / 1080p
21−24
24−27
ultra / 1080p
18−20
18−20
low / 720p
55−60
60−65
medium / 1080p
24−27
24−27
The average gaming FPS of Radeon Pro 555X in PLAYERUNKNOWN'S BATTLEGROUNDS is 6% more, than Radeon HD 6990.
high / 1080p
14−16
14−16
ultra / 1080p
9−10
10−11
QHD / 1440p
0−1
0−1
low / 720p
27−30
30−35
medium / 1080p
16−18
18−20
The average gaming FPS of Radeon Pro 555X in Red Dead Redemption 2 is 11% more, than Radeon HD 6990.
low / 768p
55−60
60−65
medium / 768p
30−35
35−40
high / 1080p
18−20
21−24
ultra / 1080p
10−12
12−14
4K / 2160p
8−9
8−9
The average gaming FPS of Radeon Pro 555X in The Witcher 3: Wild Hunt is 12% more, than Radeon HD 6990.
low / 768p
100−110
100−110
medium / 768p
60−65
60−65
ultra / 1080p
35−40
35−40
high / 768p
50−55
55−60
The average gaming FPS of Radeon Pro 555X in World of Tanks is 1% more, than Radeon HD 6990.
Full Specs
Radeon HD 6990
Radeon Pro 555X
Architecture
TeraScale 3
Polaris
Code name
Antilles
Polaris 21
Type
Desktop
Mobile workstation
Release date
8 March 2011
5 June 2017
Pipelines
1536
768
Core clock speed
830 MHz
855 MHz
Transistor count
2,640 million
3,000 million
Manufacturing process technology
40 nm
14 nm
Texture fill rate
79.68
43.54
Floating-point performance
2x 2,549.8 gflops
Length
295 mm
Memory bus width
256 Bit
128 Bit
Memory clock speed
5000 MHz
5080 MHz
Memory bandwidth
160.0 GB/s
81.6 GB/s
Shared memory
-
DirectX
11.2 (11_0)
12 (12_0)
Shader Model
5.0
6.4
OpenGL
4.4
4.6
OpenCL
1.2
2.0
Vulkan
N/A
1.2.131
FreeSync
+
Bitcoin / BTC (SHA256)
265 Mh/s
Laptop size
large
Ethereum / ETH (DaggerHashimoto)
24 Mh/s
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