Radeon HD 7870 vs Radeon RX 640
When choosing between Radeon HD 7870 and Radeon RX 640, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Radeon HD 7870 and Radeon RX 640.
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 7870
Radeon RX 640
Power consumption (TDP)
175 Watt
50 Watt
Interface
PCIe 3.0 x8
Supplementary power connectors
None
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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Radeon HD 7870 has 250% more power consumption, than Radeon RX 640.
Radeon RX 640 has 2 GB more memory, than Radeon HD 7870.
Radeon HD 7870 is used in Desktops, and Radeon RX 640 - in Laptops.
Radeon HD 7870 is build with GCN architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 218 MHz higher, than Radeon HD 7870.
Radeon HD 7870 is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
Memory clock speed of Radeon RX 640 is 1200 MHz higher, than Radeon HD 7870.
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
24−27
5−6
ultra / 1080p
14−16
3−4
QHD / 1440p
9−10
2−3
4K / 2160p
6−7
−
low / 720p
45−50
16−18
medium / 1080p
30−33
7−8
The average gaming FPS of Radeon HD 7870 in Assassin's Creed Odyssey is 257% more, than Radeon RX 640.
high / 1080p
35−40
10−12
ultra / 1080p
30−35
8−9
QHD / 1440p
16−18
0−1
4K / 2160p
10−11
−
low / 720p
75−80
24−27
medium / 1080p
40−45
10−12
The average gaming FPS of Radeon HD 7870 in Battlefield 5 is 235% more, than Radeon RX 640.
low / 768p
50−55
45−50
high / 1080p
−
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 7870 in Call of Duty: Warzone is 10% more, than Radeon RX 640.
low / 768p
240−250
130−140
medium / 768p
210−220
100−110
ultra / 1080p
130−140
50−55
QHD / 1440p
100−110
27−30
4K / 2160p
60−65
12−14
high / 768p
180−190
80−85
The average gaming FPS of Radeon HD 7870 in Counter-Strike: Global Offensive is 127% more, than Radeon RX 640.
low / 768p
60−65
50−55
ultra / 1080p
−
18−20
medium / 1080p
55−60
45−50
The average gaming FPS of Radeon HD 7870 in Cyberpunk 2077 is 20% more, than Radeon RX 640.
low / 768p
120−130
80−85
medium / 768p
110−120
55−60
ultra / 1080p
85−90
30−35
The average gaming FPS of Radeon HD 7870 in Dota 2 is 91% more, than Radeon RX 640.
high / 1080p
30−33
7−8
ultra / 1080p
27−30
5−6
QHD / 1440p
21−24
−
4K / 2160p
9−10
5−6
low / 720p
60−65
18−20
medium / 1080p
30−35
8−9
The average gaming FPS of Radeon HD 7870 in Far Cry 5 is 255% more, than Radeon RX 640.
high / 1080p
35−40
7−8
ultra / 1080p
30−33
0−1
QHD / 1440p
18−20
0−1
low / 720p
130−140
60−65
medium / 1080p
80−85
18−20
The average gaming FPS of Radeon HD 7870 in Fortnite is 193% more, than Radeon RX 640.
high / 1080p
40−45
10−11
ultra / 1080p
30−33
−
QHD / 1440p
18−20
−
4K / 2160p
14−16
8−9
low / 720p
75−80
24−27
medium / 1080p
45−50
12−14
The average gaming FPS of Radeon HD 7870 in Forza Horizon 4 is 221% more, than Radeon RX 640.
low / 768p
110−120
50−55
medium / 768p
100−110
−
high / 1080p
45−50
10−12
ultra / 1080p
20−22
5−6
QHD / 1440p
10−11
−
medium / 720p
−
45−50
The average gaming FPS of Radeon HD 7870 in Grand Theft Auto V is 165% more, than Radeon RX 640.
high / 1080p
14−16
3−4
ultra / 1080p
12−14
1−2
QHD / 1440p
10−12
−
4K / 2160p
4−5
−
low / 720p
45−50
10−11
medium / 1080p
21−24
5−6
The average gaming FPS of Radeon HD 7870 in Metro Exodus is 380% more, than Radeon RX 640.
low / 768p
120−130
90−95
ultra / 1080p
−
80−85
medium / 1080p
110−120
−
The average gaming FPS of Radeon HD 7870 in Minecraft is 35% more, than Radeon RX 640.
high / 1080p
−
6−7
ultra / 1080p
14−16
2−3
4K / 2160p
−
0−1
low / 720p
75−80
27−30
medium / 1080p
18−20
10−11
The average gaming FPS of Radeon HD 7870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 184% more, than Radeon RX 640.
high / 1080p
16−18
−
ultra / 1080p
10−12
−
QHD / 1440p
4−5
−
4K / 2160p
2−3
−
low / 720p
45−50
10−12
medium / 1080p
24−27
9−10
The average gaming FPS of Radeon HD 7870 in Red Dead Redemption 2 is 260% more, than Radeon RX 640.
low / 768p
85−90
21−24
medium / 768p
50−55
14−16
high / 1080p
30−33
6−7
ultra / 1080p
16−18
4−5
4K / 2160p
10−11
3−4
The average gaming FPS of Radeon HD 7870 in The Witcher 3: Wild Hunt is 290% more, than Radeon RX 640.
low / 768p
90−95
75−80
medium / 768p
60−65
40−45
ultra / 1080p
45−50
18−20
high / 768p
55−60
35−40
The average gaming FPS of Radeon HD 7870 in World of Tanks is 47% more, than Radeon RX 640.
Full Specs
Radeon HD 7870
Radeon RX 640
Architecture
GCN
Polaris
Code name
Pitcairn XT
Polaris 12
Type
Desktop
Laptop
Release date
5 March 2012
12 August 2019
Pipelines
1280
640
Core clock speed
1000 MHz
1218 MHz
Boost Clock
1218 MHz
Transistor count
2800 Million
2,200 million
Manufacturing process technology
28 nm
14 nm
Texture fill rate
38.98
Memory bus width
256 Bit
64 Bit
Memory clock speed
4800 MHz
6000 MHz
Memory bandwidth
112.0 GB/s
Shared memory
-
-
DirectX
DirectX 11.1, Shader 5.1
12 (12_0)
Shader Model
6.4
OpenGL
4.6
OpenCL
2.0
Vulkan
1.2.131
Monero / XMR (CryptoNight)
0.39 kh/s
FreeSync
+
Laptop size
large
Eyefinity
+
Decred / DCR (Decred)
0.63 Gh/s
Ethereum / ETH (DaggerHashimoto)
16.6 Mh/s
Zcash / ZEC (Equihash)
145 Sol/s
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