Radeon HD 6990M Crossfire vs Radeon Pro 555X
If you are going to buy a new graphics card and are choosing between Radeon HD 6990M Crossfire and Radeon Pro 555X, 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 6990M Crossfire stacks up against Radeon Pro 555X, check out specs charts below.
Radeon HD 6990M Crossfire and Radeon Pro 555X are Laptop Graphics Cards
Note: Radeon HD 6990M Crossfire and Radeon Pro 555X are only used in laptop graphics. They have 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 HD 6990M Crossfire or Radeon Pro 555X here:
Main Specs
Radeon HD 6990M Crossfire
Radeon Pro 555X
Power consumption (TDP)
75 Watt
Interface
PCIe 3.0 x8
Supplementary power connectors
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2x2 GB
2 GB
Display Connectors
No outputs
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Radeon HD 6990M Crossfire and Radeon Pro 555X have maximum RAM of 2 GB.
Radeon HD 6990M Crossfire is used in Laptops, and Radeon Pro 555X - in Mobile workstations.
Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon Pro 555X - with Polaris.
Core clock speed of Radeon Pro 555X is 140 MHz higher, than Radeon HD 6990M Crossfire.
Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon Pro 555X - by 14 nm process technology.
Memory clock speed of Radeon Pro 555X is 4180 MHz higher, than Radeon HD 6990M Crossfire.
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
16−18
ultra / 1080p
21−24
10−11
QHD / 1440p
16−18
4−5
4K / 2160p
10−11
4−5
low / 720p
60−65
30−35
medium / 1080p
40−45
21−24
The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 113% more, than Radeon Pro 555X.
high / 1080p
55−60
24−27
ultra / 1080p
45−50
21−24
QHD / 1440p
35−40
10−11
4K / 2160p
18−20
6−7
low / 720p
100−110
55−60
medium / 1080p
60−65
30−33
The average gaming FPS of Radeon HD 6990M Crossfire in Battlefield 5 is 116% more, than Radeon Pro 555X.
low / 768p
50−55
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 6990M Crossfire in Call of Duty: Warzone is 10% more, than Radeon Pro 555X.
low / 768p
250−260
220−230
medium / 768p
220−230
190−200
ultra / 1080p
180−190
100−110
QHD / 1440p
110−120
60−65
4K / 2160p
70−75
30−35
high / 768p
210−220
150−160
The average gaming FPS of Radeon HD 6990M Crossfire in Counter-Strike: Global Offensive is 37% more, than Radeon Pro 555X.
low / 768p
60−65
55−60
ultra / 1080p
−
40−45
medium / 1080p
55−60
45−50
The average gaming FPS of Radeon HD 6990M Crossfire in Cyberpunk 2077 is 15% more, than Radeon Pro 555X.
low / 768p
120−130
110−120
medium / 768p
110−120
95−100
ultra / 1080p
100−110
65−70
The average gaming FPS of Radeon HD 6990M Crossfire in Dota 2 is 23% more, than Radeon Pro 555X.
high / 1080p
45−50
20−22
ultra / 1080p
40−45
18−20
QHD / 1440p
27−30
16−18
4K / 2160p
14−16
6−7
low / 720p
80−85
40−45
medium / 1080p
45−50
21−24
The average gaming FPS of Radeon HD 6990M Crossfire in Far Cry 5 is 104% more, than Radeon Pro 555X.
high / 1080p
60−65
27−30
ultra / 1080p
45−50
21−24
QHD / 1440p
27−30
16−18
4K / 2160p
27−30
−
low / 720p
180−190
100−110
medium / 1080p
110−120
55−60
The average gaming FPS of Radeon HD 6990M Crossfire in Fortnite is 89% more, than Radeon Pro 555X.
high / 1080p
60−65
27−30
ultra / 1080p
45−50
21−24
QHD / 1440p
30−35
10−11
4K / 2160p
24−27
10−11
low / 720p
100−110
55−60
medium / 1080p
65−70
30−35
The average gaming FPS of Radeon HD 6990M Crossfire in Forza Horizon 4 is 107% more, than Radeon Pro 555X.
low / 768p
140−150
90−95
medium / 768p
120−130
80−85
high / 1080p
70−75
30−35
ultra / 1080p
30−35
12−14
QHD / 1440p
21−24
4−5
The average gaming FPS of Radeon HD 6990M Crossfire in Grand Theft Auto V is 75% more, than Radeon Pro 555X.
high / 1080p
24−27
10−11
ultra / 1080p
20−22
8−9
QHD / 1440p
16−18
−
4K / 2160p
8−9
3−4
low / 720p
65−70
30−35
medium / 1080p
30−35
14−16
The average gaming FPS of Radeon HD 6990M Crossfire in Metro Exodus is 121% more, than Radeon Pro 555X.
low / 768p
130−140
110−120
medium / 1080p
120−130
100−110
The average gaming FPS of Radeon HD 6990M Crossfire in Minecraft is 18% more, than Radeon Pro 555X.
high / 1080p
−
24−27
ultra / 1080p
14−16
18−20
low / 720p
100−110
60−65
medium / 1080p
18−20
24−27
The average gaming FPS of Radeon HD 6990M Crossfire in PLAYERUNKNOWN'S BATTLEGROUNDS is 31% more, than Radeon Pro 555X.
high / 1080p
24−27
14−16
ultra / 1080p
16−18
10−11
QHD / 1440p
10−11
0−1
4K / 2160p
7−8
−
low / 720p
65−70
30−35
medium / 1080p
35−40
18−20
The average gaming FPS of Radeon HD 6990M Crossfire in Red Dead Redemption 2 is 89% more, than Radeon Pro 555X.
low / 768p
130−140
60−65
medium / 768p
85−90
35−40
high / 1080p
45−50
21−24
ultra / 1080p
24−27
12−14
4K / 2160p
16−18
8−9
The average gaming FPS of Radeon HD 6990M Crossfire in The Witcher 3: Wild Hunt is 121% more, than Radeon Pro 555X.
low / 768p
90−95
100−110
medium / 768p
60−65
60−65
ultra / 1080p
50−55
35−40
high / 768p
60−65
55−60
The average gaming FPS of Radeon HD 6990M Crossfire in World of Tanks is 3% more, than Radeon Pro 555X.
Full Specs
Radeon HD 6990M Crossfire
Radeon Pro 555X
Architecture
Terascale 2
Polaris
Code name
Blackcomb XTX
Polaris 21
Type
Laptop
Mobile workstation
Release date
12 July 2011
5 June 2017
Pipelines
2240
768
Core clock speed
715 MHz
855 MHz
Transistor count
2x1700 Million
3,000 million
Manufacturing process technology
40 nm
14 nm
Texture fill rate
43.54
Memory bus width
256 Bit
128 Bit
Memory clock speed
900 MHz
5080 MHz
Memory bandwidth
81.6 GB/s
Shared memory
-
-
DirectX
DirectX 11, Shader 5.0
12 (12_0)
Shader Model
6.4
OpenGL
4.6
OpenCL
2.0
Vulkan
1.2.131
FreeSync
+
Laptop size
large
large
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