GeForce GTX 660 Ti vs Radeon RX 640

If you are going to buy a new graphics card and are choosing between GeForce GTX 660 Ti and Radeon RX 640, 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 GTX 660 Ti stacks up against Radeon RX 640, check out specs charts below.

GeForce GTX 660 Ti 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

	GeForce GTX 660 Ti	Radeon RX 640
Power consumption (TDP)	150 Watt	50 Watt
Interface	PCIe 3.0 x16	PCIe 3.0 x8
Supplementary power connectors	Two 6-pin	None
Memory type	GDDR5	GDDR5
Maximum RAM amount	2 GB	4 GB
Display Connectors	2x DVI, 1x HDMI, 1x DisplayPort	1x DVI, 1x HDMI, 1x DisplayPort
	Check Price	Check Price

GeForce GTX 660 Ti has 200% more power consumption, than Radeon RX 640.
GeForce GTX 660 Ti is connected by PCIe 3.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
Radeon RX 640 has 2 GB more memory, than GeForce GTX 660 Ti.
GeForce GTX 660 Ti is used in Desktops, and Radeon RX 640 - in Laptops.
GeForce GTX 660 Ti is build with Kepler architecture, and Radeon RX 640 - with Polaris.
Core clock speed of Radeon RX 640 is 303 MHz higher, than GeForce GTX 660 Ti.
GeForce GTX 660 Ti is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
Memory clock speed of Radeon RX 640 is 5994 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks


high / 1080p	21−24	5−6
ultra / 1080p	12−14	3−4
QHD / 1440p	8−9	2−3
4K / 2160p	5−6	−
low / 720p	40−45	16−18
medium / 1080p	27−30	7−8
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 228% more, than Radeon RX 640.
high / 1080p	35−40	10−12
ultra / 1080p	30−35	8−9
QHD / 1440p	14−16	0−1
4K / 2160p	9−10	−
low / 720p	70−75	24−27
medium / 1080p	40−45	10−12
The average gaming FPS of GeForce GTX 660 Ti in Battlefield 5 is 228% 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 GeForce GTX 660 Ti in Call of Duty: Warzone is 10% more, than Radeon RX 640.
low / 768p	230−240	130−140
medium / 768p	210−220	100−110
ultra / 1080p	120−130	50−55
QHD / 1440p	100−110	27−30
4K / 2160p	55−60	12−14
high / 768p	170−180	80−85
The average gaming FPS of GeForce GTX 660 Ti in Counter-Strike: Global Offensive is 120% more, than Radeon RX 640.
low / 768p	60−65	50−55
ultra / 1080p	55−60	18−20
medium / 1080p	55−60	45−50
The average gaming FPS of GeForce GTX 660 Ti in Cyberpunk 2077 is 51% 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 GeForce GTX 660 Ti in Dota 2 is 91% more, than Radeon RX 640.
high / 1080p	27−30	7−8
ultra / 1080p	24−27	5−6
QHD / 1440p	20−22	−
4K / 2160p	9−10	5−6
low / 720p	55−60	18−20
medium / 1080p	30−33	8−9
The average gaming FPS of GeForce GTX 660 Ti in Far Cry 5 is 233% more, than Radeon RX 640.
high / 1080p	35−40	7−8
ultra / 1080p	27−30	0−1
QHD / 1440p	16−18	0−1
low / 720p	130−140	60−65
medium / 1080p	75−80	18−20
The average gaming FPS of GeForce GTX 660 Ti in Fortnite is 186% more, than Radeon RX 640.
high / 1080p	35−40	10−11
ultra / 1080p	27−30	−
QHD / 1440p	16−18	−
4K / 2160p	14−16	8−9
low / 720p	75−80	24−27
medium / 1080p	40−45	12−14
The average gaming FPS of GeForce GTX 660 Ti in Forza Horizon 4 is 207% more, than Radeon RX 640.
low / 768p	110−120	50−55
medium / 768p	95−100	−
high / 1080p	45−50	10−12
ultra / 1080p	18−20	5−6
QHD / 1440p	9−10	−
medium / 720p	−	45−50
The average gaming FPS of GeForce GTX 660 Ti in Grand Theft Auto V is 160% more, than Radeon RX 640.
high / 1080p	14−16	3−4
ultra / 1080p	10−12	1−2
QHD / 1440p	10−12	−
4K / 2160p	3−4	−
low / 720p	40−45	10−11
medium / 1080p	20−22	5−6
The average gaming FPS of GeForce GTX 660 Ti in Metro Exodus is 340% more, than Radeon RX 640.
low / 768p	120−130	90−95
ultra / 1080p	−	80−85
medium / 1080p	110−120	−
The average gaming FPS of GeForce GTX 660 Ti 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 GeForce GTX 660 Ti in PLAYERUNKNOWN'S BATTLEGROUNDS is 184% more, than Radeon RX 640.
high / 1080p	16−18	−
ultra / 1080p	10−12	−
QHD / 1440p	3−4	−
4K / 2160p	2−3	−
low / 720p	40−45	10−12
medium / 1080p	21−24	9−10
The average gaming FPS of GeForce GTX 660 Ti in Red Dead Redemption 2 is 220% more, than Radeon RX 640.
low / 768p	80−85	21−24
medium / 768p	50−55	14−16
high / 1080p	27−30	6−7
ultra / 1080p	16−18	4−5
4K / 2160p	9−10	3−4
The average gaming FPS of GeForce GTX 660 Ti in The Witcher 3: Wild Hunt is 280% more, than Radeon RX 640.
low / 768p	90−95	75−80
medium / 768p	60−65	40−45
ultra / 1080p	40−45	18−20
high / 768p	55−60	35−40
The average gaming FPS of GeForce GTX 660 Ti in World of Tanks is 43% more, than Radeon RX 640.

Full Specs

	GeForce GTX 660 Ti	Radeon RX 640
Architecture	Kepler	Polaris
Code name	GK104	Polaris 12
Type	Desktop	Laptop
Release date	16 August 2012	12 August 2019
Pipelines	1344	640
Core clock speed	915 MHz	1218 MHz
Boost Clock	980 MHz	1218 MHz
Transistor count	3,540 million	2,200 million
Manufacturing process technology	28 nm	14 nm
Texture fill rate	102.5 billion/sec	38.98
Floating-point performance	2,459.5 gflops
Length	9.5" (24.1 cm)
Memory bus width	192-bit GDDR5	64 Bit
Memory clock speed	6.0 GB/s	6000 MHz
Memory bandwidth	144.2 GB/s	112.0 GB/s
Shared memory	-	-
DirectX	12 (11_0)	12 (12_0)
Shader Model	5.1	6.4
OpenGL	4.3	4.6
OpenCL	1.2	2.0
Vulkan	1.1.126	1.2.131
CUDA	+
FreeSync		+
CUDA cores	1344
Bus support	PCI Express 3.0
Height	4.376" (11.1 cm)
SLI options	+
Multi monitor support	4 displays
HDMI	+
HDCP	+
Maximum VGA resolution	2048x1536
Audio input for HDMI	Internal
3D Blu-Ray	+
3D Gaming	+
3D Vision	+
Bitcoin / BTC (SHA256)	99 Mh/s
Laptop size		large
	Check Price	Check Price

GeForce GTX 660 Ti vs Radeon RX 640

Radeon RX 640 is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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