Radeon HD 7790 vs Radeon RX 640

When choosing between Radeon HD 7790 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 7790 and Radeon RX 640.

Radeon HD 7790 Check Price

Radeon RX 640 Check Price

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:

Radeon RX 640 Laptops

Main Specs

	Radeon HD 7790	Radeon RX 640
Power consumption (TDP)	85 Watt	50 Watt
Interface	PCIe 3.0 x16	PCIe 3.0 x8
Supplementary power connectors	1x 6-pin	None
Memory type	GDDR5	GDDR5
Maximum RAM amount	1 GB	4 GB
Display Connectors	1x DVI, 1x HDMI, 2x mini-DisplayPort	1x DVI, 1x HDMI, 1x DisplayPort
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Radeon HD 7790 has 70% more power consumption, than Radeon RX 640.
Radeon HD 7790 is connected by PCIe 3.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
Radeon RX 640 has 3 GB more memory, than Radeon HD 7790.
Radeon HD 7790 is used in Desktops, and Radeon RX 640 - in Laptops.
Radeon HD 7790 is build with GCN 2.0 architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 218 MHz higher, than Radeon HD 7790.
Radeon HD 7790 is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
Memory clock speed of Radeon HD 7790 and Radeon RX 640 is 6000 MHz.

Game benchmarks


high / 1080p	16−18	5−6
ultra / 1080p	9−10	3−4
QHD / 1440p	4−5	2−3
4K / 2160p	4−5	−
low / 720p	30−35	16−18
medium / 1080p	20−22	7−8
The average gaming FPS of Radeon HD 7790 in Assassin's Creed Odyssey is 128% more, than Radeon RX 640.
high / 1080p	24−27	10−12
ultra / 1080p	21−24	8−9
QHD / 1440p	8−9	0−1
4K / 2160p	6−7	−
low / 720p	50−55	24−27
medium / 1080p	27−30	10−12
The average gaming FPS of Radeon HD 7790 in Battlefield 5 is 128% more, than Radeon RX 640.
low / 768p	45−50	45−50
high / 1080p	−	40−45
QHD / 1440p	0−1	0−1
Radeon HD 7790 and Radeon RX 640 have the same average FPS in Call of Duty: Warzone.
low / 768p	210−220	130−140
medium / 768p	180−190	100−110
ultra / 1080p	100−110	50−55
QHD / 1440p	55−60	27−30
4K / 2160p	30−35	12−14
high / 768p	140−150	80−85
The average gaming FPS of Radeon HD 7790 in Counter-Strike: Global Offensive is 78% more, than Radeon RX 640.
low / 768p	55−60	50−55
ultra / 1080p	40−45	18−20
medium / 1080p	45−50	45−50
The average gaming FPS of Radeon HD 7790 in Cyberpunk 2077 is 25% more, than Radeon RX 640.
low / 768p	110−120	80−85
medium / 768p	95−100	55−60
ultra / 1080p	65−70	30−35
The average gaming FPS of Radeon HD 7790 in Dota 2 is 63% more, than Radeon RX 640.
high / 1080p	18−20	7−8
ultra / 1080p	16−18	5−6
QHD / 1440p	16−18	−
4K / 2160p	6−7	5−6
low / 720p	40−45	18−20
medium / 1080p	20−22	8−9
The average gaming FPS of Radeon HD 7790 in Far Cry 5 is 133% more, than Radeon RX 640.
high / 1080p	24−27	7−8
ultra / 1080p	20−22	0−1
QHD / 1440p	16−18	0−1
low / 720p	100−110	60−65
medium / 1080p	55−60	18−20
The average gaming FPS of Radeon HD 7790 in Fortnite is 113% more, than Radeon RX 640.
high / 1080p	27−30	10−11
ultra / 1080p	21−24	−
QHD / 1440p	10−11	−
4K / 2160p	10−11	8−9
low / 720p	55−60	24−27
medium / 1080p	30−33	12−14
The average gaming FPS of Radeon HD 7790 in Forza Horizon 4 is 128% more, than Radeon RX 640.
low / 768p	85−90	50−55
medium / 768p	75−80	−
high / 1080p	30−35	10−12
ultra / 1080p	12−14	5−6
QHD / 1440p	3−4	−
medium / 720p	−	45−50
The average gaming FPS of Radeon HD 7790 in Grand Theft Auto V is 91% more, than Radeon RX 640.
high / 1080p	10−11	3−4
ultra / 1080p	8−9	1−2
4K / 2160p	3−4	−
low / 720p	30−35	10−11
medium / 1080p	12−14	5−6
The average gaming FPS of Radeon HD 7790 in Metro Exodus is 220% more, than Radeon RX 640.
low / 768p	110−120	90−95
ultra / 1080p	−	80−85
medium / 1080p	100−110	−
The average gaming FPS of Radeon HD 7790 in Minecraft is 25% more, than Radeon RX 640.
high / 1080p	21−24	6−7
ultra / 1080p	18−20	2−3
4K / 2160p	−	0−1
low / 720p	55−60	27−30
medium / 1080p	24−27	10−11
The average gaming FPS of Radeon HD 7790 in PLAYERUNKNOWN'S BATTLEGROUNDS is 158% more, than Radeon RX 640.
high / 1080p	14−16	−
ultra / 1080p	10−11	−
QHD / 1440p	0−1	−
low / 720p	30−33	10−12
medium / 1080p	16−18	9−10
The average gaming FPS of Radeon HD 7790 in Red Dead Redemption 2 is 140% more, than Radeon RX 640.
low / 768p	55−60	21−24
medium / 768p	35−40	14−16
high / 1080p	20−22	6−7
ultra / 1080p	10−12	4−5
4K / 2160p	8−9	3−4
The average gaming FPS of Radeon HD 7790 in The Witcher 3: Wild Hunt is 170% more, than Radeon RX 640.
low / 768p	100−110	75−80
medium / 768p	60−65	40−45
ultra / 1080p	35−40	18−20
high / 768p	55−60	35−40
The average gaming FPS of Radeon HD 7790 in World of Tanks is 47% more, than Radeon RX 640.

Full Specs

	Radeon HD 7790	Radeon RX 640
Architecture	GCN 2.0	Polaris
Code name	Bonaire	Polaris 12
Type	Desktop	Laptop
Release date	22 March 2013	12 August 2019
Pipelines	896	640
Core clock speed	1000 MHz	1218 MHz
Boost Clock		1218 MHz
Transistor count	2,080 million	2,200 million
Manufacturing process technology	28 nm	14 nm
Texture fill rate	56.00	38.98
Floating-point performance	1,792 gflops
Length	183 mm
Memory bus width	128 Bit	64 Bit
Memory clock speed	6000 MHz	6000 MHz
Memory bandwidth	96 GB/s	112.0 GB/s
Shared memory		-
DirectX	12 (12_0)	12 (12_0)
Shader Model	6.3	6.4
OpenGL	4.6	4.6
OpenCL	2.0	2.0
Vulkan	1.2.131	1.2.131
FreeSync		+
Bitcoin / BTC (SHA256)	218 Mh/s
Laptop size		large
Ethereum / ETH (DaggerHashimoto)	5.2 Mh/s
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Radeon HD 7790 vs Radeon RX 640

Radeon RX 640 is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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