GeForce GT 640 vs Radeon HD 6990

If you are going to buy a new graphics card and are choosing between GeForce GT 640 and Radeon HD 6990, 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 GeForce GT 640 stacks up against Radeon HD 6990, check out specs charts below.

GeForce GT 640 Check Price

Radeon HD 6990 Check Price

Main Specs

	GeForce GT 640	Radeon HD 6990
Power consumption (TDP)	65 Watt	375 Watt
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Supplementary power connectors	None	2x 8-pin
Memory type	DDR3	GDDR5
Maximum RAM amount	2 GB	2 GB
Display Connectors	1x DVI, 1x HDMI, 1x DisplayPort	1x DVI, 4x mini-DisplayPort
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Radeon HD 6990 has 476% more power consumption, than GeForce GT 640.
GeForce GT 640 is connected by PCIe 3.0 x16, and Radeon HD 6990 uses PCIe 2.0 x16 interface.
GeForce GT 640 and Radeon HD 6990 have maximum RAM of 2 GB.
Both cards are used in Desktops.
GeForce GT 640 is build with Kepler architecture, and Radeon HD 6990 - with TeraScale 3.
Core clock speed of GeForce GT 640 is 72 MHz higher, than Radeon HD 6990.
GeForce GT 640 is manufactured by 28 nm process technology, and Radeon HD 6990 - by 40 nm process technology.
Radeon HD 6990 is 150 mm longer, than GeForce GT 640.
Memory clock speed of Radeon HD 6990 is 3218 MHz higher, than GeForce GT 640.

Game benchmarks


high / 1080p	2−3	14−16
ultra / 1080p	1−2	9−10
QHD / 1440p	0−1	3−4
low / 720p	14−16	30−35
medium / 1080p	5−6	18−20
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 216% more, than GeForce GT 640.
high / 1080p	7−8	24−27
ultra / 1080p	5−6	21−24
QHD / 1440p	0−1	7−8
4K / 2160p	−	5−6
low / 720p	20−22	50−55
medium / 1080p	7−8	27−30
The average gaming FPS of Radeon HD 6990 in Battlefield 5 is 220% more, than GeForce GT 640.
low / 768p	50−55	45−50
high / 1080p	35−40	−
QHD / 1440p	0−1	0−1
The average gaming FPS of GeForce GT 640 in Call of Duty: Warzone is 10% more, than Radeon HD 6990.
low / 768p	110−120	210−220
medium / 768p	90−95	170−180
ultra / 1080p	45−50	95−100
QHD / 1440p	24−27	50−55
4K / 2160p	18−20	30−33
high / 768p	65−70	140−150
The average gaming FPS of Radeon HD 6990 in Counter-Strike: Global Offensive is 95% more, than GeForce GT 640.
low / 768p	70−75	55−60
ultra / 1080p	21−24	40−45
medium / 1080p	45−50	45−50
The average gaming FPS of Radeon HD 6990 in Cyberpunk 2077 is 4% more, than GeForce GT 640.
low / 768p	70−75	110−120
medium / 768p	50−55	90−95
ultra / 1080p	27−30	60−65
The average gaming FPS of Radeon HD 6990 in Dota 2 is 76% more, than GeForce GT 640.
high / 1080p	3−4	18−20
ultra / 1080p	3−4	16−18
4K / 2160p	2−3	6−7
low / 720p	14−16	35−40
medium / 1080p	4−5	18−20
The average gaming FPS of Radeon HD 6990 in Far Cry 5 is 280% more, than GeForce GT 640.
high / 1080p	10−12	24−27
ultra / 1080p	5−6	18−20
QHD / 1440p	2−3	16−18
low / 720p	50−55	95−100
medium / 1080p	16−18	50−55
The average gaming FPS of Radeon HD 6990 in Fortnite is 147% more, than GeForce GT 640.
high / 1080p	6−7	24−27
ultra / 1080p	−	20−22
QHD / 1440p	4−5	9−10
4K / 2160p	2−3	−
low / 720p	21−24	50−55
medium / 1080p	9−10	27−30
The average gaming FPS of Radeon HD 6990 in Forza Horizon 4 is 190% more, than GeForce GT 640.
low / 768p	45−50	85−90
medium / 768p	−	75−80
high / 1080p	7−8	30−33
ultra / 1080p	3−4	12−14
QHD / 1440p	0−1	3−4
medium / 720p	40−45	−
The average gaming FPS of Radeon HD 6990 in Grand Theft Auto V is 131% more, than GeForce GT 640.
high / 1080p	2−3	9−10
ultra / 1080p	0−1	7−8
4K / 2160p	0−1	2−3
low / 720p	8−9	27−30
medium / 1080p	4−5	12−14
The average gaming FPS of Radeon HD 6990 in Metro Exodus is 240% more, than GeForce GT 640.
low / 768p	80−85	110−120
ultra / 1080p	70−75	100−110
medium / 1080p	−	100−110
The average gaming FPS of Radeon HD 6990 in Minecraft is 42% more, than GeForce GT 640.
high / 1080p	−	21−24
ultra / 1080p	12−14	18−20
low / 720p	27−30	55−60
medium / 1080p	14−16	24−27
The average gaming FPS of Radeon HD 6990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 88% more, than GeForce GT 640.
high / 1080p	6−7	14−16
ultra / 1080p	4−5	9−10
QHD / 1440p	0−1	0−1
low / 720p	7−8	27−30
medium / 1080p	−	16−18
The average gaming FPS of Radeon HD 6990 in Red Dead Redemption 2 is 183% more, than GeForce GT 640.
low / 768p	14−16	55−60
medium / 768p	10−11	30−35
high / 1080p	5−6	18−20
ultra / 1080p	4−5	10−12
4K / 2160p	0−1	8−9
The average gaming FPS of Radeon HD 6990 in The Witcher 3: Wild Hunt is 275% more, than GeForce GT 640.
low / 768p	70−75	100−110
medium / 768p	35−40	60−65
ultra / 1080p	16−18	35−40
high / 768p	30−35	50−55
The average gaming FPS of Radeon HD 6990 in World of Tanks is 64% more, than GeForce GT 640.

Full Specs

	GeForce GT 640	Radeon HD 6990
Architecture	Kepler	TeraScale 3
Code name	GK107	Antilles
Type	Desktop	Desktop
Release date	5 June 2012	8 March 2011
Pipelines	384	1536
Core clock speed	902 MHz	830 MHz
Transistor count	1,270 million	2,640 million
Manufacturing process technology	28 nm	40 nm
Texture fill rate	28.86	79.68
Floating-point performance	692.7 gflops	2x 2,549.8 gflops
Length	145 mm	295 mm
Memory bus width	128 Bit	256 Bit
Memory clock speed	1782 MHz	5000 MHz
Memory bandwidth	28.51 GB/s	160.0 GB/s
DirectX	12 (11_0)	11.2 (11_0)
Shader Model	5.1	5.0
OpenGL	4.6	4.4
OpenCL	1.2	1.2
Vulkan	1.1.126	N/A
CUDA	3.0
Bitcoin / BTC (SHA256)	24 Mh/s	265 Mh/s
Ethereum / ETH (DaggerHashimoto)		24 Mh/s
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GeForce GT 640 vs Radeon HD 6990

Main Specs

Game benchmarks

Full Specs

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