GeForce GT 640M LE vs GeForce GTX 660M

In this comparison between GeForce GT 640M LE and GeForce GTX 660M 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 660M will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M LE Check Price

GeForce GTX 660M Check Price

GeForce GT 640M LE and GeForce GTX 660M are Laptop Graphics Cards

Note: GeForce GT 640M LE and GeForce GTX 660M are only used in laptop graphics. They have 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 or GeForce GTX 660M here:

GeForce GT 640M LE Laptops

GeForce GTX 660M Laptops

Main Specs

	GeForce GT 640M LE	GeForce GTX 660M
Power consumption (TDP)	20 Watt	50 Watt
Interface	PCIe 2.0 x16	MXM-B (3.0)
Memory type	DDR3\DDR5	GDDR5
Maximum RAM amount	2 GB	2 GB
Display Connectors	No outputs	No outputs
	Check Price	Check Price

GeForce GTX 660M has 150% more power consumption, than GeForce GT 640M LE.
GeForce GT 640M LE is connected by PCIe 2.0 x16, and GeForce GTX 660M uses MXM-B (3.0) interface.
GeForce GT 640M LE and GeForce GTX 660M have maximum RAM of 2 GB.
Both cards are used in Laptops.
GeForce GT 640M LE is build with Fermi / Kepler architecture, and GeForce GTX 660M - with Kepler.
GeForce GT 640M LE and GeForce GTX 660M are manufactured by 28 nm process technology.
Memory clock speed of GeForce GTX 660M is 200 MHz higher, than GeForce GT 640M LE.

Game benchmarks


high / 1080p	0−1	6−7
ultra / 1080p	−	4−5
QHD / 1440p	0−1	0−1
low / 720p	1−2	16−18
medium / 1080p	0−1	8−9
The average gaming FPS of GeForce GTX 660M in Assassin's Creed Odyssey is 1600% more, than GeForce GT 640M LE.
high / 1080p	−	12−14
ultra / 1080p	−	10−11
QHD / 1440p	0−1	0−1
low / 720p	0−1	24−27
medium / 1080p	−	12−14
low / 768p	50−55	45−50
high / 1080p	45−50	45−50
QHD / 1440p	0−1	0−1
The average gaming FPS of GeForce GT 640M LE in Call of Duty: Warzone is 6% more, than GeForce GTX 660M.
low / 768p	60−65	130−140
medium / 768p	27−30	110−120
ultra / 1080p	7−8	50−55
QHD / 1440p	−	27−30
4K / 2160p	−	27−30
high / 768p	16−18	80−85
The average gaming FPS of GeForce GTX 660M in Counter-Strike: Global Offensive is 242% more, than GeForce GT 640M LE.
low / 768p	70−75	55−60
ultra / 1080p	0−1	18−20
medium / 1080p	45−50	45−50
The average gaming FPS of GeForce GT 640M LE in Cyberpunk 2077 is 15% more, than GeForce GTX 660M.
low / 768p	45−50	80−85
medium / 768p	10−11	55−60
ultra / 1080p	0−1	30−35
The average gaming FPS of GeForce GTX 660M in Dota 2 is 141% more, than GeForce GT 640M LE.
high / 1080p	−	8−9
ultra / 1080p	−	7−8
4K / 2160p	−	3−4
low / 720p	0−1	18−20
medium / 1080p	−	8−9
high / 1080p	−	14−16
ultra / 1080p	−	10−11
low / 720p	21−24	60−65
medium / 1080p	0−1	21−24
The average gaming FPS of GeForce GTX 660M in Fortnite is 181% more, than GeForce GT 640M LE.
high / 1080p	0−1	12−14
ultra / 1080p	−	10−12
QHD / 1440p	0−1	1−2
low / 720p	0−1	24−27
medium / 1080p	0−1	14−16
low / 768p	18−20	50−55
medium / 768p	−	45−50
high / 1080p	0−1	12−14
ultra / 1080p	−	6−7
QHD / 1440p	0−1	0−1
medium / 720p	12−14	−
The average gaming FPS of GeForce GTX 660M in Grand Theft Auto V is 173% more, than GeForce GT 640M LE.
high / 1080p	−	4−5
ultra / 1080p	−	3−4
4K / 2160p	−	0−1
low / 720p	0−1	12−14
medium / 1080p	−	6−7
low / 768p	75−80	95−100
high / 1080p	27−30	90−95
ultra / 1080p	−	80−85
medium / 1080p	−	90−95
The average gaming FPS of GeForce GTX 660M in Minecraft is 79% more, than GeForce GT 640M LE.
high / 1080p	−	16−18
ultra / 1080p	−	14−16
low / 720p	8−9	30−35
medium / 1080p	−	18−20
The average gaming FPS of GeForce GTX 660M in PLAYERUNKNOWN'S BATTLEGROUNDS is 300% more, than GeForce GT 640M LE.
ultra / 1080p	−	7−8
QHD / 1440p	−	0−1
low / 720p	0−1	12−14
medium / 1080p	−	10−12
low / 768p	0−1	24−27
medium / 768p	−	16−18
high / 1080p	−	9−10
ultra / 1080p	−	6−7
4K / 2160p	−	6−7
low / 768p	45−50	85−90
medium / 768p	14−16	45−50
ultra / 1080p	0−1	18−20
high / 768p	12−14	35−40
The average gaming FPS of GeForce GTX 660M in World of Tanks is 128% more, than GeForce GT 640M LE.

Full Specs

	GeForce GT 640M LE	GeForce GTX 660M
Architecture	Fermi / Kepler	Kepler
Code name	N13P-LP	N13E-GE
Type	Laptop	Laptop
Release date	22 March 2012	22 March 2012
Pipelines	384	384
Core clock speed		835 MHz
Boost Clock		950 MHz
Transistor count	585 million	1,270 million
Manufacturing process technology	28 nm	28 nm
Texture fill rate		30.4 billion/sec
Floating-point performance	384.0 gflops	729.6 gflops
Memory bus width	128bit	128bit
Memory clock speed	1800 - 4000 MHz	2000 MHz
Memory bandwidth		64.0 GB/s
Shared memory	-	-
DirectX	12 API	12 API
Shader Model	5.1	5.1
OpenGL	4.5	4.5
OpenCL	1.1	1.1
Vulkan	N/A	1.1.126
CUDA	+	+
CUDA cores	Up to 384	384
Bus support	PCI Express 2.0, PCI Express 3.0	PCI Express 2.0, PCI Express 3.0
SLI options		+
HDMI	+	+
HDCP	+	+
Maximum VGA resolution	Up to 2048x1536	Up to 2048x1536
3D Blu-Ray	+
Bitcoin / BTC (SHA256)	14 Mh/s	36 Mh/s
Laptop size	medium sized	large
Optimus	+	+
	Check Price	Check Price

GeForce GT 640M LE vs GeForce GTX 660M

GeForce GT 640M LE and GeForce GTX 660M are Laptop Graphics Cards

Main Specs

Game benchmarks

Full Specs

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