Mobility Radeon HD 4870 X2 vs Radeon R9 M485X
If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 4870 X2 and Radeon R9 M485X, 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 R9 M485X, check out specs charts below.
Mobility Radeon HD 4870 X2 and Radeon R9 M485X are Laptop Graphics Cards
Note: Mobility Radeon HD 4870 X2 and Radeon R9 M485X 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 X2 or Radeon R9 M485X here:
Main Specs
Mobility Radeon HD 4870 X2
Radeon R9 M485X
Power consumption (TDP)
250 Watt
Interface
PCIe 2.0 x16
MXM-B (3.0)
Supplementary power connectors
None
Memory type
GDDR3, GDDR5
GDDR5
Maximum RAM amount
2 GB
8 GB MB
Display Connectors
No outputs
No outputs
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Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon R9 M485X uses MXM-B (3.0) interface.
Radeon R9 M485X has 6 GB more memory, than Mobility Radeon HD 4870 X2.
Both cards are used in Laptops.
Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon R9 M485X - with GCN 3.
Core clock speed of Radeon R9 M485X is 173 MHz higher, than Mobility Radeon HD 4870 X2.
Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon R9 M485X - by 28 nm process technology.
Memory clock speed of Radeon R9 M485X is 4112 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
24−27
ultra / 1080p
5−6
14−16
QHD / 1440p
0−1
10−11
4K / 2160p
−
6−7
low / 720p
21−24
45−50
medium / 1080p
12−14
30−35
The average gaming FPS of Radeon R9 M485X in Assassin's Creed Odyssey is 150% more, than Mobility Radeon HD 4870 X2.
high / 1080p
16−18
35−40
ultra / 1080p
14−16
30−35
QHD / 1440p
0−1
18−20
4K / 2160p
−
10−12
low / 720p
35−40
80−85
medium / 1080p
16−18
45−50
The average gaming FPS of Radeon R9 M485X in Battlefield 5 is 138% 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 R9 M485X in Call of Duty: Warzone is 10% more, than Mobility Radeon HD 4870 X2.
low / 768p
160−170
240−250
medium / 768p
130−140
210−220
ultra / 1080p
70−75
140−150
QHD / 1440p
40−45
110−120
4K / 2160p
30−33
60−65
high / 768p
100−110
180−190
The average gaming FPS of Radeon R9 M485X in Counter-Strike: Global Offensive is 76% 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 R9 M485X 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
90−95
The average gaming FPS of Radeon R9 M485X in Dota 2 is 57% more, than Mobility Radeon HD 4870 X2.
high / 1080p
10−12
30−35
ultra / 1080p
10−11
27−30
QHD / 1440p
−
21−24
4K / 2160p
4−5
10−11
low / 720p
24−27
60−65
medium / 1080p
12−14
30−35
The average gaming FPS of Radeon R9 M485X in Far Cry 5 is 175% more, than Mobility Radeon HD 4870 X2.
high / 1080p
18−20
40−45
ultra / 1080p
12−14
30−35
QHD / 1440p
−
18−20
low / 720p
75−80
140−150
medium / 1080p
30−35
85−90
The average gaming FPS of Radeon R9 M485X in Fortnite is 117% more, than Mobility Radeon HD 4870 X2.
high / 1080p
16−18
40−45
ultra / 1080p
14−16
30−35
QHD / 1440p
4−5
18−20
4K / 2160p
−
16−18
low / 720p
35−40
80−85
medium / 1080p
18−20
45−50
The average gaming FPS of Radeon R9 M485X in Forza Horizon 4 is 144% more, than Mobility Radeon HD 4870 X2.
low / 768p
65−70
110−120
medium / 768p
55−60
100−110
high / 1080p
18−20
50−55
ultra / 1080p
8−9
21−24
QHD / 1440p
0−1
10−12
The average gaming FPS of Radeon R9 M485X in Grand Theft Auto V is 92% more, than Mobility Radeon HD 4870 X2.
high / 1080p
6−7
16−18
ultra / 1080p
4−5
12−14
QHD / 1440p
−
12−14
4K / 2160p
1−2
4−5
low / 720p
18−20
45−50
medium / 1080p
8−9
21−24
The average gaming FPS of Radeon R9 M485X in Metro Exodus is 150% more, than Mobility Radeon HD 4870 X2.
low / 768p
100−110
120−130
ultra / 1080p
90−95
−
medium / 1080p
95−100
110−120
The average gaming FPS of Radeon R9 M485X in Minecraft is 18% more, than Mobility Radeon HD 4870 X2.
high / 1080p
18−20
−
ultra / 1080p
14−16
14−16
low / 720p
40−45
80−85
medium / 1080p
20−22
18−20
The average gaming FPS of Radeon R9 M485X in PLAYERUNKNOWN'S BATTLEGROUNDS is 46% more, than Mobility Radeon HD 4870 X2.
high / 1080p
12−14
18−20
ultra / 1080p
8−9
12−14
QHD / 1440p
0−1
4−5
4K / 2160p
−
3−4
low / 720p
18−20
45−50
medium / 1080p
12−14
24−27
The average gaming FPS of Radeon R9 M485X in Red Dead Redemption 2 is 100% more, than Mobility Radeon HD 4870 X2.
low / 768p
35−40
90−95
medium / 768p
21−24
55−60
high / 1080p
12−14
30−35
ultra / 1080p
8−9
18−20
4K / 2160p
7−8
10−11
The average gaming FPS of Radeon R9 M485X in The Witcher 3: Wild Hunt is 147% more, than Mobility Radeon HD 4870 X2.
low / 768p
90−95
90−95
medium / 768p
50−55
60−65
ultra / 1080p
24−27
45−50
high / 768p
40−45
55−60
The average gaming FPS of Radeon R9 M485X in World of Tanks is 22% more, than Mobility Radeon HD 4870 X2.
Full Specs
Mobility Radeon HD 4870 X2
Radeon R9 M485X
Architecture
Terascale 1
GCN 3
Code name
M98-XT
Amethyst
Type
Laptop
Laptop
Release date
9 January 2009
14 May 2016
Pipelines
1600
2048
Core clock speed
550 MHz
723 MHz
Transistor count
956 million
5,000 million
Manufacturing process technology
55 nm
28 nm
Texture fill rate
22.00
92.54
Floating-point performance
2x 880.0 gflops
2,961 gflops
Memory bus width
256 Bit
256 Bit
Memory clock speed
888 MHz
5000 MHz
Memory bandwidth
89.6 GB/s
160.0 GB/s
Shared memory
-
-
DirectX
10.1 (10_1)
12 (12_0)
Shader Model
4.1
6.3
OpenGL
3.3
4.6
OpenCL
1.1
2.0
Vulkan
N/A
1.2.131
Laptop size
large
large
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