Radeon HD 6790 vs Radeon RX 640

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6790 and Radeon RX 640. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon HD 6790 and Radeon RX 640. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon HD 6790 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 6790	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 HDMI, 1x DisplayPort	1x DVI, 1x HDMI, 1x DisplayPort
	Check Price	Check Price

Radeon HD 6790 has 200% more power consumption, than Radeon RX 640.
Radeon HD 6790 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 6790.
Radeon HD 6790 is used in Desktops, and Radeon RX 640 - in Laptops.
Radeon HD 6790 is build with Terascale 2 architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 378 MHz higher, than Radeon HD 6790.
Radeon HD 6790 is manufactured by 40 nm process technology, and Radeon RX 640 - by 14 nm process technology.
Memory clock speed of Radeon RX 640 is 4950 MHz higher, than Radeon HD 6790.

Game benchmarks


high / 1080p	7−8	5−6
ultra / 1080p	4−5	3−4
QHD / 1440p	0−1	2−3
low / 720p	18−20	16−18
medium / 1080p	9−10	7−8
The average gaming FPS of Radeon HD 6790 in Assassin's Creed Odyssey is 25% more, than Radeon RX 640.
high / 1080p	12−14	10−12
ultra / 1080p	10−12	8−9
QHD / 1440p	0−1	0−1
low / 720p	27−30	24−27
medium / 1080p	14−16	10−12
The average gaming FPS of Radeon HD 6790 in Battlefield 5 is 14% more, than Radeon RX 640.
low / 768p	45−50	45−50
high / 1080p	45−50	40−45
QHD / 1440p	0−1	0−1
The average gaming FPS of Radeon HD 6790 in Call of Duty: Warzone is 4% more, than Radeon RX 640.
low / 768p	140−150	130−140
medium / 768p	120−130	100−110
ultra / 1080p	60−65	50−55
QHD / 1440p	30−35	27−30
4K / 2160p	27−30	12−14
high / 768p	90−95	80−85
The average gaming FPS of Radeon HD 6790 in Counter-Strike: Global Offensive is 17% more, than Radeon RX 640.
low / 768p	55−60	50−55
ultra / 1080p	21−24	18−20
medium / 1080p	45−50	45−50
The average gaming FPS of Radeon HD 6790 in Cyberpunk 2077 is 7% more, than Radeon RX 640.
low / 768p	85−90	80−85
medium / 768p	65−70	55−60
ultra / 1080p	35−40	30−35
The average gaming FPS of Radeon HD 6790 in Dota 2 is 12% more, than Radeon RX 640.
high / 1080p	9−10	7−8
ultra / 1080p	8−9	5−6
4K / 2160p	4−5	5−6
low / 720p	21−24	18−20
medium / 1080p	10−11	8−9
The average gaming FPS of Radeon HD 6790 in Far Cry 5 is 22% more, than Radeon RX 640.
high / 1080p	16−18	7−8
ultra / 1080p	10−12	0−1
QHD / 1440p	−	0−1
low / 720p	65−70	60−65
medium / 1080p	27−30	18−20
The average gaming FPS of Radeon HD 6790 in Fortnite is 27% more, than Radeon RX 640.
high / 1080p	14−16	10−11
ultra / 1080p	12−14	−
QHD / 1440p	2−3	−
4K / 2160p	−	8−9
low / 720p	27−30	24−27
medium / 1080p	16−18	12−14
The average gaming FPS of Radeon HD 6790 in Forza Horizon 4 is 25% more, than Radeon RX 640.
low / 768p	55−60	50−55
medium / 768p	50−55	−
high / 1080p	14−16	10−12
ultra / 1080p	7−8	5−6
QHD / 1440p	0−1	−
medium / 720p	−	45−50
The average gaming FPS of Radeon HD 6790 in Grand Theft Auto V is 13% more, than Radeon RX 640.
high / 1080p	5−6	3−4
ultra / 1080p	4−5	1−2
4K / 2160p	0−1	−
low / 720p	14−16	10−11
medium / 1080p	7−8	5−6
The average gaming FPS of Radeon HD 6790 in Metro Exodus is 60% more, than Radeon RX 640.
low / 768p	95−100	90−95
high / 1080p	90−95	−
ultra / 1080p	85−90	80−85
medium / 1080p	95−100	−
The average gaming FPS of Radeon HD 6790 in Minecraft is 5% more, than Radeon RX 640.
high / 1080p	16−18	6−7
ultra / 1080p	14−16	2−3
4K / 2160p	−	0−1
low / 720p	35−40	27−30
medium / 1080p	18−20	10−11
The average gaming FPS of Radeon HD 6790 in PLAYERUNKNOWN'S BATTLEGROUNDS is 83% more, than Radeon RX 640.
ultra / 1080p	8−9	−
QHD / 1440p	0−1	−
low / 720p	14−16	10−12
medium / 1080p	10−12	9−10
The average gaming FPS of Radeon HD 6790 in Red Dead Redemption 2 is 30% more, than Radeon RX 640.
low / 768p	27−30	21−24
medium / 768p	18−20	14−16
high / 1080p	10−11	6−7
ultra / 1080p	7−8	4−5
4K / 2160p	6−7	3−4
The average gaming FPS of Radeon HD 6790 in The Witcher 3: Wild Hunt is 40% more, than Radeon RX 640.
low / 768p	85−90	75−80
medium / 768p	45−50	40−45
ultra / 1080p	21−24	18−20
high / 768p	40−45	35−40
The average gaming FPS of Radeon HD 6790 in World of Tanks is 13% more, than Radeon RX 640.

Full Specs

	Radeon HD 6790	Radeon RX 640
Architecture	Terascale 2	Polaris
Code name	Barts	Polaris 12
Type	Desktop	Laptop
Release date	4 April 2011	12 August 2019
Pipelines	800	640
Core clock speed	840 MHz	1218 MHz
Boost Clock		1218 MHz
Transistor count	1,700 million	2,200 million
Manufacturing process technology	40 nm	14 nm
Texture fill rate	33.60	38.98
Floating-point performance	1,344.0 gflops
Length	198 mm
Memory bus width	256 Bit	64 Bit
Memory clock speed	1050 MHz	6000 MHz
Memory bandwidth	134.4 GB/s	112.0 GB/s
Shared memory		-
DirectX	11.2 (11_0)	12 (12_0)
Shader Model	5.0	6.4
OpenGL	4.4	4.6
OpenCL	1.2	2.0
Vulkan	N/A	1.2.131
FreeSync		+
Bitcoin / BTC (SHA256)	122 Mh/s
Laptop size		large
	Check Price	Check Price

Radeon HD 6790 vs Radeon RX 640

Radeon RX 640 is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

Similar compares