Mobility Radeon HD 4870 vs Radeon HD 6990M Crossfire
In this comparison between Mobility Radeon HD 4870 and Radeon HD 6990M Crossfire 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 Mobility Radeon HD 4870 will be the best choice, for others Radeon HD 6990M Crossfire will be their preference. Study the comparison tables below and make your choice.
Mobility Radeon HD 4870 and Radeon HD 6990M Crossfire are Laptop Graphics Cards
Note: Mobility Radeon HD 4870 and Radeon HD 6990M Crossfire 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 Mobility Radeon HD 4870 or Radeon HD 6990M Crossfire here:
Main Specs
Mobility Radeon HD 4870
Radeon HD 6990M Crossfire
Interface
PCIe 2.0 x16
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2x2 GB
Display Connectors
No outputs
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Radeon HD 6990M Crossfire has 1 GB more memory, than Mobility Radeon HD 4870.
Both cards are used in Laptops.
Mobility Radeon HD 4870 is build with Terascale 1 architecture, and Radeon HD 6990M Crossfire - with Terascale 2.
Core clock speed of Radeon HD 6990M Crossfire is 165 MHz higher, than Mobility Radeon HD 4870.
Mobility Radeon HD 4870 is manufactured by 55 nm process technology, and Radeon HD 6990M Crossfire - by 40 nm process technology.
Memory clock speed of Radeon HD 6990M Crossfire is 12 MHz higher, than Mobility Radeon HD 4870.
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
7−8
35−40
ultra / 1080p
4−5
21−24
QHD / 1440p
0−1
16−18
4K / 2160p
−
10−11
low / 720p
16−18
60−65
medium / 1080p
8−9
40−45
The average gaming FPS of Radeon HD 6990M Crossfire in Assassin's Creed Odyssey is 355% more, than Mobility Radeon HD 4870.
high / 1080p
12−14
55−60
ultra / 1080p
10−11
45−50
QHD / 1440p
0−1
35−40
4K / 2160p
−
18−20
low / 720p
24−27
100−110
medium / 1080p
12−14
60−65
The average gaming FPS of Radeon HD 6990M Crossfire in Battlefield 5 is 353% more, than Mobility Radeon HD 4870.
low / 768p
45−50
50−55
high / 1080p
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 Mobility Radeon HD 4870.
low / 768p
140−150
250−260
medium / 768p
110−120
220−230
ultra / 1080p
55−60
180−190
QHD / 1440p
30−33
110−120
4K / 2160p
27−30
70−75
high / 768p
80−85
210−220
The average gaming FPS of Radeon HD 6990M Crossfire in Counter-Strike: Global Offensive is 132% more, than Mobility Radeon HD 4870.
low / 768p
55−60
60−65
ultra / 1080p
20−22
−
medium / 1080p
45−50
55−60
The average gaming FPS of Radeon HD 6990M Crossfire in Cyberpunk 2077 is 15% more, than Mobility Radeon HD 4870.
low / 768p
80−85
120−130
medium / 768p
60−65
110−120
ultra / 1080p
35−40
100−110
The average gaming FPS of Radeon HD 6990M Crossfire in Dota 2 is 91% more, than Mobility Radeon HD 4870.
high / 1080p
8−9
45−50
ultra / 1080p
8−9
40−45
QHD / 1440p
−
27−30
4K / 2160p
3−4
14−16
low / 720p
18−20
80−85
medium / 1080p
9−10
45−50
The average gaming FPS of Radeon HD 6990M Crossfire in Far Cry 5 is 422% more, than Mobility Radeon HD 4870.
high / 1080p
14−16
60−65
ultra / 1080p
10−11
45−50
QHD / 1440p
−
27−30
4K / 2160p
−
27−30
low / 720p
60−65
180−190
medium / 1080p
24−27
110−120
The average gaming FPS of Radeon HD 6990M Crossfire in Fortnite is 264% more, than Mobility Radeon HD 4870.
high / 1080p
12−14
60−65
ultra / 1080p
10−12
45−50
QHD / 1440p
1−2
30−35
4K / 2160p
−
24−27
low / 720p
27−30
100−110
medium / 1080p
14−16
65−70
The average gaming FPS of Radeon HD 6990M Crossfire in Forza Horizon 4 is 384% more, than Mobility Radeon HD 4870.
low / 768p
50−55
140−150
medium / 768p
45−50
120−130
high / 1080p
12−14
70−75
ultra / 1080p
6−7
30−35
QHD / 1440p
0−1
21−24
The average gaming FPS of Radeon HD 6990M Crossfire in Grand Theft Auto V is 220% more, than Mobility Radeon HD 4870.
high / 1080p
5−6
24−27
ultra / 1080p
3−4
20−22
QHD / 1440p
−
16−18
4K / 2160p
0−1
8−9
low / 720p
12−14
65−70
medium / 1080p
6−7
30−35
The average gaming FPS of Radeon HD 6990M Crossfire in Metro Exodus is 414% more, than Mobility Radeon HD 4870.
low / 768p
95−100
130−140
high / 1080p
90−95
−
ultra / 1080p
80−85
−
medium / 1080p
90−95
120−130
The average gaming FPS of Radeon HD 6990M Crossfire in Minecraft is 36% more, than Mobility Radeon HD 4870.
high / 1080p
16−18
−
ultra / 1080p
14−16
14−16
low / 720p
30−35
100−110
medium / 1080p
18−20
18−20
The average gaming FPS of Radeon HD 6990M Crossfire in PLAYERUNKNOWN'S BATTLEGROUNDS is 109% more, than Mobility Radeon HD 4870.
high / 1080p
−
24−27
ultra / 1080p
7−8
16−18
QHD / 1440p
0−1
10−11
4K / 2160p
−
7−8
low / 720p
12−14
65−70
medium / 1080p
10−12
35−40
The average gaming FPS of Radeon HD 6990M Crossfire in Red Dead Redemption 2 is 300% more, than Mobility Radeon HD 4870.
low / 768p
24−27
130−140
medium / 768p
16−18
85−90
high / 1080p
9−10
45−50
ultra / 1080p
6−7
24−27
4K / 2160p
6−7
16−18
The average gaming FPS of Radeon HD 6990M Crossfire in The Witcher 3: Wild Hunt is 376% more, than Mobility Radeon HD 4870.
low / 768p
85−90
90−95
medium / 768p
45−50
60−65
ultra / 1080p
20−22
50−55
high / 768p
35−40
60−65
The average gaming FPS of Radeon HD 6990M Crossfire in World of Tanks is 39% more, than Mobility Radeon HD 4870.
Full Specs
Mobility Radeon HD 4870
Radeon HD 6990M Crossfire
Architecture
Terascale 1
Terascale 2
Code name
M98-XT
Blackcomb XTX
Type
Laptop
Laptop
Release date
9 January 2009
12 July 2011
Pipelines
800
2240
Core clock speed
550 MHz
715 MHz
Transistor count
956 million
2x1700 Million
Manufacturing process technology
55 nm
40 nm
Texture fill rate
22.00
Floating-point performance
880.0 gflops
Memory bus width
256 Bit
256 Bit
Memory clock speed
888 MHz
900 MHz
Memory bandwidth
56.83 GB/s
Shared memory
-
-
DirectX
10.1 (10_1)
DirectX 11, Shader 5.0
Shader Model
4.1
OpenGL
3.3
OpenCL
1.1
Vulkan
N/A
Laptop size
large
large
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