GeForce GT 640M LE vs GeForce GTX 660

In this comparison between GeForce GT 640M LE and GeForce GTX 660 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640M LE will be the best choice, for others GeForce GTX 660 will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M LE Check Price

GeForce GTX 660 Check Price

GeForce GT 640M LE is a Laptop Graphics Card

Note: GeForce GT 640M LE 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 GeForce GT 640M LE here:

GeForce GT 640M LE Laptops

Main Specs

	GeForce GT 640M LE	GeForce GTX 660
Power consumption (TDP)	20 Watt	140 Watt
Interface	PCIe 2.0 x16	PCIe 3.0 x16
Supplementary power connectors		One 6-pin
Memory type	DDR3\DDR5	GDDR5
Maximum RAM amount	2 GB	2 GB
Display Connectors	No outputs	2x DVI, 1x HDMI, 1x DisplayPort
	Check Price	Check Price

GeForce GTX 660 has 600% more power consumption, than GeForce GT 640M LE.
GeForce GT 640M LE is connected by PCIe 2.0 x16, and GeForce GTX 660 uses PCIe 3.0 x16 interface.
GeForce GT 640M LE and GeForce GTX 660 have maximum RAM of 2 GB.
GeForce GT 640M LE is used in Laptops, and GeForce GTX 660 - in Desktops.
GeForce GT 640M LE is build with Fermi / Kepler architecture, and GeForce GTX 660 - with Kepler.
GeForce GT 640M LE and GeForce GTX 660 are manufactured by 28 nm process technology.
Memory clock speed of GeForce GT 640M LE is 1794 MHz higher, than GeForce GTX 660.

Game benchmarks


high / 1080p	0−1	20−22
ultra / 1080p	−	12−14
QHD / 1440p	0−1	6−7
4K / 2160p	−	5−6
low / 720p	1−2	40−45
medium / 1080p	0−1	24−27
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 4100% more, than GeForce GT 640M LE.
high / 1080p	−	30−35
ultra / 1080p	−	27−30
QHD / 1440p	0−1	10−12
4K / 2160p	−	8−9
low / 720p	0−1	65−70
medium / 1080p	−	35−40
low / 768p	50−55	50−55
high / 1080p	45−50	−
QHD / 1440p	0−1	0−1
GeForce GT 640M LE and GeForce GTX 660 have the same average FPS in Call of Duty: Warzone.
low / 768p	60−65	230−240
medium / 768p	27−30	200−210
ultra / 1080p	7−8	120−130
QHD / 1440p	−	90−95
4K / 2160p	−	50−55
high / 768p	16−18	160−170
The average gaming FPS of GeForce GTX 660 in Counter-Strike: Global Offensive is 550% more, than GeForce GT 640M LE.
low / 768p	70−75	60−65
ultra / 1080p	0−1	50−55
medium / 1080p	45−50	55−60
GeForce GT 640M LE and GeForce GTX 660 have the same average FPS in Cyberpunk 2077.
low / 768p	45−50	120−130
medium / 768p	10−11	100−110
ultra / 1080p	0−1	80−85
The average gaming FPS of GeForce GTX 660 in Dota 2 is 296% more, than GeForce GT 640M LE.
high / 1080p	−	24−27
ultra / 1080p	−	21−24
QHD / 1440p	−	18−20
4K / 2160p	−	8−9
low / 720p	0−1	50−55
medium / 1080p	−	27−30
high / 1080p	−	30−35
ultra / 1080p	−	24−27
QHD / 1440p	−	16−18
low / 720p	21−24	120−130
medium / 1080p	0−1	70−75
The average gaming FPS of GeForce GTX 660 in Fortnite is 468% more, than GeForce GT 640M LE.
high / 1080p	0−1	30−35
ultra / 1080p	−	24−27
QHD / 1440p	0−1	14−16
4K / 2160p	−	12−14
low / 720p	0−1	65−70
medium / 1080p	0−1	35−40
low / 768p	18−20	100−110
medium / 768p	−	90−95
high / 1080p	0−1	40−45
ultra / 1080p	−	16−18
QHD / 1440p	0−1	7−8
medium / 720p	12−14	−
The average gaming FPS of GeForce GTX 660 in Grand Theft Auto V is 452% more, than GeForce GT 640M LE.
high / 1080p	−	12−14
ultra / 1080p	−	10−11
QHD / 1440p	−	10−11
4K / 2160p	−	3−4
low / 720p	0−1	40−45
medium / 1080p	−	18−20
low / 768p	75−80	120−130
high / 1080p	27−30	−
medium / 1080p	−	110−120
The average gaming FPS of GeForce GTX 660 in Minecraft is 62% more, than GeForce GT 640M LE.
ultra / 1080p	−	14−16
low / 720p	8−9	70−75
medium / 1080p	−	18−20
The average gaming FPS of GeForce GTX 660 in PLAYERUNKNOWN'S BATTLEGROUNDS is 800% more, than GeForce GT 640M LE.
high / 1080p	−	14−16
ultra / 1080p	−	10−11
QHD / 1440p	−	1−2
4K / 2160p	−	1−2
low / 720p	0−1	35−40
medium / 1080p	−	21−24
low / 768p	0−1	70−75
medium / 768p	−	45−50
high / 1080p	−	24−27
ultra / 1080p	−	14−16
4K / 2160p	−	8−9
low / 768p	45−50	90−95
medium / 768p	14−16	60−65
ultra / 1080p	0−1	40−45
high / 768p	12−14	55−60
The average gaming FPS of GeForce GTX 660 in World of Tanks is 180% more, than GeForce GT 640M LE.

Full Specs

	GeForce GT 640M LE	GeForce GTX 660
Architecture	Fermi / Kepler	Kepler
Code name	N13P-LP	GK106
Type	Laptop	Desktop
Release date	22 March 2012	6 September 2012
Pipelines	384	960
Core clock speed		980 MHz
Boost Clock		1033 MHz
Transistor count	585 million	2,540 million
Manufacturing process technology	28 nm	28 nm
Texture fill rate		78.4 billion/sec
Floating-point performance	384.0 gflops	1,981 gflops
Length		9.5" (24.1 cm)
Memory bus width	128bit	192-bit GDDR5
Memory clock speed	1800 - 4000 MHz	6.0 GB/s
Memory bandwidth		144.2 GB/s
Shared memory	-
DirectX	12 API	12 (11_0)
Shader Model	5.1	5.1
OpenGL	4.5	4.3
OpenCL	1.1	1.2
Vulkan	N/A	1.1.126
CUDA	+	+
CUDA cores	Up to 384	960
Bus support	PCI Express 2.0, PCI Express 3.0	PCI Express 3.0
Height		4.376" (11.1 cm)
SLI options		+
Multi monitor support		4 displays
HDMI	+	+
HDCP	+	+
Maximum VGA resolution	Up to 2048x1536	2048x1536
Audio input for HDMI		Internal
3D Blu-Ray	+	+
3D Gaming		+
3D Vision		+
Bitcoin / BTC (SHA256)	14 Mh/s	66 Mh/s
Laptop size	medium sized
Optimus	+
	Check Price	Check Price

GeForce GT 640M LE vs GeForce GTX 660

GeForce GT 640M LE is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

Similar compares