Radeon HD 4870 vs Radeon RX 640
In this comparison between Radeon HD 4870 and Radeon RX 640 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 4870 will be the best choice, for others Radeon RX 640 will be their preference. Study the comparison tables below and make your choice.
Radeon RX 640 is a Laptop Graphics Card
Note: Radeon RX 640 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 RX 640 here:
Main Specs
Radeon HD 4870
Radeon RX 640
Power consumption (TDP)
150 Watt
50 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Display Connectors
2x DVI, 1x S-Video
1x DVI, 1x HDMI, 1x DisplayPort
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Radeon HD 4870 has 200% more power consumption, than Radeon RX 640.
Radeon HD 4870 is connected by PCIe 2.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
Radeon RX 640 has 3 GB more memory, than Radeon HD 4870.
Radeon HD 4870 is used in Desktops, and Radeon RX 640 - in Laptops.
Radeon HD 4870 is build with TeraScale architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 468 MHz higher, than Radeon HD 4870.
Radeon HD 4870 is manufactured by 55 nm process technology, and Radeon RX 640 - by 14 nm process technology.
Memory clock speed of Radeon RX 640 is 2400 MHz higher, than 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
3−4
5−6
ultra / 1080p
1−2
3−4
QHD / 1440p
0−1
2−3
low / 720p
14−16
16−18
medium / 1080p
6−7
7−8
The average gaming FPS of Radeon RX 640 in Assassin's Creed Odyssey is 33% more, than Radeon HD 4870.
high / 1080p
8−9
10−12
ultra / 1080p
6−7
8−9
QHD / 1440p
0−1
0−1
low / 720p
21−24
24−27
medium / 1080p
9−10
10−12
The average gaming FPS of Radeon RX 640 in Battlefield 5 is 27% more, than Radeon HD 4870.
low / 768p
45−50
45−50
high / 1080p
40−45
40−45
QHD / 1440p
0−1
0−1
Radeon HD 4870 and Radeon RX 640 have the same average FPS in Call of Duty: Warzone.
low / 768p
120−130
130−140
medium / 768p
100−110
100−110
ultra / 1080p
45−50
50−55
QHD / 1440p
24−27
27−30
4K / 2160p
−
12−14
high / 768p
75−80
80−85
The average gaming FPS of Radeon RX 640 in Counter-Strike: Global Offensive is 5% more, than Radeon HD 4870.
low / 768p
70−75
50−55
ultra / 1080p
21−24
18−20
medium / 1080p
40−45
45−50
The average gaming FPS of Radeon HD 4870 in Cyberpunk 2077 is 15% more, than Radeon RX 640.
low / 768p
75−80
80−85
medium / 768p
55−60
55−60
ultra / 1080p
30−35
30−35
The average gaming FPS of Radeon RX 640 in Dota 2 is 3% more, than Radeon HD 4870.
high / 1080p
4−5
7−8
ultra / 1080p
4−5
5−6
4K / 2160p
1−2
5−6
low / 720p
14−16
18−20
medium / 1080p
6−7
8−9
The average gaming FPS of Radeon RX 640 in Far Cry 5 is 50% more, than Radeon HD 4870.
high / 1080p
12−14
7−8
ultra / 1080p
7−8
0−1
QHD / 1440p
4−5
0−1
low / 720p
60−65
60−65
medium / 1080p
18−20
18−20
The average gaming FPS of Radeon HD 4870 in Fortnite is 6% more, than Radeon RX 640.
high / 1080p
7−8
10−11
ultra / 1080p
7−8
−
QHD / 1440p
0−1
−
4K / 2160p
−
8−9
low / 720p
21−24
24−27
medium / 1080p
10−11
12−14
The average gaming FPS of Radeon RX 640 in Forza Horizon 4 is 23% more, than Radeon HD 4870.
low / 768p
50−55
50−55
high / 1080p
10−11
10−12
ultra / 1080p
4−5
5−6
QHD / 1440p
0−1
−
medium / 720p
40−45
45−50
The average gaming FPS of Radeon RX 640 in Grand Theft Auto V is 7% more, than Radeon HD 4870.
high / 1080p
2−3
3−4
ultra / 1080p
0−1
1−2
4K / 2160p
0−1
−
low / 720p
9−10
10−11
medium / 1080p
4−5
5−6
The average gaming FPS of Radeon RX 640 in Metro Exodus is 20% more, than Radeon HD 4870.
low / 768p
85−90
90−95
high / 1080p
70−75
−
ultra / 1080p
−
80−85
The average gaming FPS of Radeon RX 640 in Minecraft is 5% more, than Radeon HD 4870.
high / 1080p
−
6−7
ultra / 1080p
12−14
2−3
4K / 2160p
−
0−1
low / 720p
30−35
27−30
medium / 1080p
14−16
10−11
The average gaming FPS of Radeon HD 4870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 53% more, than Radeon RX 640.
high / 1080p
7−8
−
ultra / 1080p
4−5
−
QHD / 1440p
0−1
−
low / 720p
8−9
10−12
medium / 1080p
8−9
9−10
The average gaming FPS of Radeon RX 640 in Red Dead Redemption 2 is 25% more, than Radeon HD 4870.
low / 768p
18−20
21−24
medium / 768p
12−14
14−16
high / 1080p
7−8
6−7
ultra / 1080p
5−6
4−5
4K / 2160p
1−2
3−4
The average gaming FPS of Radeon RX 640 in The Witcher 3: Wild Hunt is 11% more, than Radeon HD 4870.
low / 768p
75−80
75−80
medium / 768p
40−45
40−45
ultra / 1080p
18−20
18−20
high / 768p
30−35
35−40
The average gaming FPS of Radeon RX 640 in World of Tanks is 4% more, than Radeon HD 4870.
Full Specs
Radeon HD 4870
Radeon RX 640
Architecture
TeraScale
Polaris
Code name
RV770
Polaris 12
Type
Desktop
Laptop
Release date
25 June 2008
12 August 2019
Pipelines
800
640
Core clock speed
750 MHz
1218 MHz
Boost Clock
1218 MHz
Transistor count
956 million
2,200 million
Manufacturing process technology
55 nm
14 nm
Texture fill rate
30.00
38.98
Floating-point performance
1,200.0 gflops
Length
250 mm
Memory bus width
256 Bit
64 Bit
Memory clock speed
3600 MHz
6000 MHz
Memory bandwidth
115.2 GB/s
112.0 GB/s
Shared memory
-
DirectX
10.1 (10_1)
12 (12_0)
Shader Model
4.1
6.4
OpenGL
3.3
4.6
OpenCL
1.1
2.0
Vulkan
N/A
1.2.131
FreeSync
+
Laptop size
large
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