Mobility Radeon HD 4870 X2 vs Radeon HD 7990
If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 4870 X2 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 Mobility Radeon HD 4870 X2 stacks up against Radeon HD 7990, check out specs charts below.
Mobility Radeon HD 4870 X2 is a Laptop Graphics Card
Note: Mobility Radeon HD 4870 X2 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 Mobility Radeon HD 4870 X2 here:
Main Specs
Mobility Radeon HD 4870 X2
Radeon HD 7990
Power consumption (TDP)
375 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
Memory type
GDDR3, GDDR5
GDDR5
Maximum RAM amount
2 GB
3 GB
Display Connectors
No outputs
1x DVI, 4x mini-DisplayPort
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Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon HD 7990 uses PCIe 3.0 x16 interface.
Radeon HD 7990 has 1 GB more memory, than Mobility Radeon HD 4870 X2.
Mobility Radeon HD 4870 X2 is used in Laptops, and Radeon HD 7990 - in Desktops.
Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon HD 7990 - with GCN 1.0.
Core clock speed of Radeon HD 7990 is 400 MHz higher, than Mobility Radeon HD 4870 X2.
Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon HD 7990 - by 28 nm process technology.
Memory clock speed of Radeon HD 7990 is 5112 MHz higher, than Mobility Radeon HD 4870 X2.
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
9−10
35−40
ultra / 1080p
5−6
21−24
QHD / 1440p
0−1
16−18
4K / 2160p
−
10−11
low / 720p
21−24
60−65
medium / 1080p
12−14
40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 241% more, than Mobility Radeon HD 4870 X2.
high / 1080p
16−18
55−60
ultra / 1080p
14−16
45−50
QHD / 1440p
0−1
35−40
4K / 2160p
−
18−20
low / 720p
35−40
100−110
medium / 1080p
16−18
60−65
The average gaming FPS of Radeon HD 7990 in Battlefield 5 is 223% more, than Mobility Radeon HD 4870 X2.
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 Mobility Radeon HD 4870 X2.
low / 768p
160−170
250−260
medium / 768p
130−140
220−230
ultra / 1080p
70−75
180−190
QHD / 1440p
40−45
110−120
4K / 2160p
30−33
70−75
high / 768p
100−110
210−220
The average gaming FPS of Radeon HD 7990 in Counter-Strike: Global Offensive is 94% more, than Mobility Radeon HD 4870 X2.
low / 768p
55−60
60−65
ultra / 1080p
27−30
−
medium / 1080p
45−50
55−60
The average gaming FPS of Radeon HD 7990 in Cyberpunk 2077 is 15% more, than Mobility Radeon HD 4870 X2.
low / 768p
90−95
120−130
medium / 768p
70−75
110−120
ultra / 1080p
45−50
100−110
The average gaming FPS of Radeon HD 7990 in Dota 2 is 64% more, than Mobility Radeon HD 4870 X2.
high / 1080p
10−12
45−50
ultra / 1080p
10−11
40−45
QHD / 1440p
−
27−30
4K / 2160p
4−5
14−16
low / 720p
24−27
80−85
medium / 1080p
12−14
45−50
The average gaming FPS of Radeon HD 7990 in Far Cry 5 is 291% more, than Mobility Radeon HD 4870 X2.
high / 1080p
18−20
60−65
ultra / 1080p
12−14
45−50
QHD / 1440p
−
27−30
4K / 2160p
−
27−30
low / 720p
75−80
180−190
medium / 1080p
30−35
110−120
The average gaming FPS of Radeon HD 7990 in Fortnite is 191% more, than Mobility Radeon HD 4870 X2.
high / 1080p
16−18
60−65
ultra / 1080p
14−16
45−50
QHD / 1440p
4−5
30−35
4K / 2160p
−
24−27
low / 720p
35−40
100−110
medium / 1080p
18−20
65−70
The average gaming FPS of Radeon HD 7990 in Forza Horizon 4 is 250% more, than Mobility Radeon HD 4870 X2.
low / 768p
65−70
140−150
medium / 768p
55−60
120−130
high / 1080p
18−20
70−75
ultra / 1080p
8−9
30−35
QHD / 1440p
0−1
21−24
The average gaming FPS of Radeon HD 7990 in Grand Theft Auto V is 144% more, than Mobility Radeon HD 4870 X2.
high / 1080p
6−7
24−27
ultra / 1080p
4−5
20−22
QHD / 1440p
−
16−18
4K / 2160p
1−2
8−9
low / 720p
18−20
65−70
medium / 1080p
8−9
30−35
The average gaming FPS of Radeon HD 7990 in Metro Exodus is 287% more, than Mobility Radeon HD 4870 X2.
low / 768p
100−110
130−140
ultra / 1080p
90−95
−
medium / 1080p
95−100
120−130
The average gaming FPS of Radeon HD 7990 in Minecraft is 28% more, than Mobility Radeon HD 4870 X2.
high / 1080p
18−20
−
ultra / 1080p
14−16
14−16
low / 720p
40−45
100−110
medium / 1080p
20−22
18−20
The average gaming FPS of Radeon HD 7990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 76% more, than Mobility Radeon HD 4870 X2.
high / 1080p
12−14
24−27
ultra / 1080p
8−9
16−18
QHD / 1440p
0−1
10−11
4K / 2160p
−
7−8
low / 720p
18−20
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 Mobility Radeon HD 4870 X2.
low / 768p
35−40
130−140
medium / 768p
21−24
85−90
high / 1080p
12−14
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 264% more, than Mobility Radeon HD 4870 X2.
low / 768p
90−95
90−95
medium / 768p
50−55
60−65
ultra / 1080p
24−27
50−55
high / 768p
40−45
60−65
The average gaming FPS of Radeon HD 7990 in World of Tanks is 26% more, than Mobility Radeon HD 4870 X2.
Full Specs
Mobility Radeon HD 4870 X2
Radeon HD 7990
Architecture
Terascale 1
GCN 1.0
Code name
M98-XT
Malta
Type
Laptop
Desktop
Release date
9 January 2009
24 April 2013
Pipelines
1600
2048
Core clock speed
550 MHz
950 MHz
Boost Clock
1000 MHz
Transistor count
956 million
4,313 million
Manufacturing process technology
55 nm
28 nm
Texture fill rate
22.00
128.0
Floating-point performance
2x 880.0 gflops
2x 4,096 gflops
Length
307 mm
Memory bus width
256 Bit
384 Bit
Memory clock speed
888 MHz
6000 MHz
Memory bandwidth
89.6 GB/s
288.0 GB/s
Shared memory
-
DirectX
10.1 (10_1)
12 (11_1)
Shader Model
4.1
5.1
OpenGL
3.3
4.6
OpenCL
1.1
1.2
Vulkan
N/A
1.2.131
Bitcoin / BTC (SHA256)
459 Mh/s
Laptop size
large
Ethereum / ETH (DaggerHashimoto)
44 Mh/s
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