GeForce 940MX vs GeForce GTX 660M

When comparing GeForce 940MX and GeForce GTX 660M, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 940MX and GeForce GTX 660M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce 940MX Check Price

GeForce GTX 660M Check Price

GeForce 940MX and GeForce GTX 660M are Laptop Graphics Cards

Note: GeForce 940MX 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 940MX or GeForce GTX 660M here:

GeForce 940MX Laptops

GeForce GTX 660M Laptops

Main Specs

	GeForce 940MX	GeForce GTX 660M
Power consumption (TDP)	23 Watt	50 Watt
Interface	PCIe 3.0 x8	MXM-B (3.0)
Supplementary power connectors	None
Memory type	DDR3, GDDR5	GDDR5
Maximum RAM amount	4 GB	2 GB
Display Connectors	No outputs	No outputs
	Check Price	Check Price

GeForce GTX 660M has 117% more power consumption, than GeForce 940MX.
GeForce 940MX is connected by PCIe 3.0 x8, and GeForce GTX 660M uses MXM-B (3.0) interface.
GeForce 940MX has 2 GB more memory, than GeForce GTX 660M.
Both cards are used in Laptops.
GeForce 940MX is build with Maxwell architecture, and GeForce GTX 660M - with Kepler.
Core clock speed of GeForce 940MX is 287 MHz higher, than GeForce GTX 660M.
GeForce 940MX and GeForce GTX 660M are manufactured by 28 nm process technology.
Memory clock speed of GeForce 940MX is 2000 MHz higher, than GeForce GTX 660M.

Game benchmarks


high / 1080p	7−8	6−7
ultra / 1080p	4−5	4−5
QHD / 1440p	0−1	0−1
low / 720p	16−18	16−18
medium / 1080p	8−9	8−9
GeForce 940MX and GeForce GTX 660M have the same average FPS in Assassin's Creed Odyssey.
high / 1080p	12−14	12−14
ultra / 1080p	10−11	10−11
QHD / 1440p	0−1	0−1
low / 720p	24−27	24−27
medium / 1080p	12−14	12−14
GeForce 940MX and GeForce GTX 660M have the same average FPS in Battlefield 5.
low / 768p	45−50	45−50
high / 1080p	45−50	45−50
QHD / 1440p	0−1	0−1
GeForce 940MX and GeForce GTX 660M have the same average FPS in Call of Duty: Warzone.
low / 768p	140−150	130−140
medium / 768p	110−120	110−120
ultra / 1080p	55−60	50−55
QHD / 1440p	30−33	27−30
4K / 2160p	27−30	27−30
high / 768p	80−85	80−85
The average gaming FPS of GeForce 940MX in Counter-Strike: Global Offensive is 4% more, than GeForce GTX 660M.
low / 768p	55−60	55−60
ultra / 1080p	20−22	18−20
medium / 1080p	45−50	45−50
The average gaming FPS of GeForce 940MX in Cyberpunk 2077 is 2% more, than GeForce GTX 660M.
low / 768p	80−85	80−85
medium / 768p	60−65	55−60
ultra / 1080p	35−40	30−35
The average gaming FPS of GeForce 940MX in Dota 2 is 5% more, than GeForce GTX 660M.
high / 1080p	8−9	8−9
ultra / 1080p	8−9	7−8
4K / 2160p	3−4	3−4
low / 720p	18−20	18−20
medium / 1080p	9−10	8−9
GeForce 940MX and GeForce GTX 660M have the same average FPS in Far Cry 5.
high / 1080p	14−16	14−16
ultra / 1080p	10−11	10−11
low / 720p	60−65	60−65
medium / 1080p	24−27	21−24
The average gaming FPS of GeForce 940MX in Fortnite is 3% more, than GeForce GTX 660M.
high / 1080p	12−14	12−14
ultra / 1080p	10−12	10−12
QHD / 1440p	1−2	1−2
low / 720p	27−30	24−27
medium / 1080p	14−16	14−16
GeForce 940MX and GeForce GTX 660M have the same average FPS in Forza Horizon 4.
low / 768p	50−55	50−55
medium / 768p	45−50	45−50
high / 1080p	12−14	12−14
ultra / 1080p	6−7	6−7
QHD / 1440p	0−1	0−1
GeForce 940MX and GeForce GTX 660M have the same average FPS in Grand Theft Auto V.
high / 1080p	5−6	4−5
ultra / 1080p	3−4	3−4
4K / 2160p	0−1	0−1
low / 720p	12−14	12−14
medium / 1080p	6−7	6−7
The average gaming FPS of GeForce 940MX in Metro Exodus is 16% more, than GeForce GTX 660M.
low / 768p	95−100	95−100
high / 1080p	90−95	90−95
ultra / 1080p	80−85	80−85
medium / 1080p	90−95	90−95
GeForce 940MX and GeForce GTX 660M have the same average FPS in Minecraft.
high / 1080p	16−18	16−18
ultra / 1080p	14−16	14−16
low / 720p	30−35	30−35
medium / 1080p	18−20	18−20
GeForce 940MX and GeForce GTX 660M have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
ultra / 1080p	7−8	7−8
QHD / 1440p	0−1	0−1
low / 720p	12−14	12−14
medium / 1080p	10−12	10−12
GeForce 940MX and GeForce GTX 660M have the same average FPS in Red Dead Redemption 2.
low / 768p	24−27	24−27
medium / 768p	16−18	16−18
high / 1080p	9−10	9−10
ultra / 1080p	6−7	6−7
4K / 2160p	6−7	6−7
GeForce 940MX and GeForce GTX 660M have the same average FPS in The Witcher 3: Wild Hunt.
low / 768p	85−90	85−90
medium / 768p	45−50	45−50
ultra / 1080p	20−22	18−20
high / 768p	35−40	35−40
The average gaming FPS of GeForce 940MX in World of Tanks is 2% more, than GeForce GTX 660M.

Full Specs

	GeForce 940MX	GeForce GTX 660M
Architecture	Maxwell	Kepler
Code name	N16S-GTR-B/S	N13E-GE
Type	Laptop	Laptop
Release date	10 March 2016	22 March 2012
Pipelines	384	384
Core clock speed	1122 MHz	835 MHz
Boost Clock	1242 MHz	950 MHz
Transistor count	1,870 million	1,270 million
Manufacturing process technology	28 nm	28 nm
Texture fill rate	23.83	30.4 billion/sec
Floating-point performance	762.6 gflops	729.6 gflops
Memory bus width	64 Bit	128bit
Memory clock speed	4000 MHz	2000 MHz
Memory bandwidth	40.1 GB/s	64.0 GB/s
Shared memory	-	-
DirectX	12 (11_0)	12 API
Shader Model	5.1	5.1
OpenGL	4.5	4.5
OpenCL	1.2	1.1
Vulkan	1.1	1.1.126
CUDA	+	+
CUDA cores		384
Bus support	PCI Express 3.0	PCI Express 2.0, PCI Express 3.0
SLI options		+
HDMI		+
HDCP		+
Maximum VGA resolution		Up to 2048x1536
Bitcoin / BTC (SHA256)	102 Mh/s	36 Mh/s
Laptop size	medium sized	large
Optimus	+	+
GPU Boost	2.0
GameWorks	+
	Check Price	Check Price

GeForce 940MX vs GeForce GTX 660M

GeForce 940MX and GeForce GTX 660M are Laptop Graphics Cards

Main Specs

Game benchmarks

Full Specs

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