GeForce GTX 660 vs Mobility Radeon HD 3870 X2

When choosing between GeForce GTX 660 and Mobility Radeon HD 3870 X2, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 660 and Mobility Radeon HD 3870 X2.

GeForce GTX 660 Check Price

Mobility Radeon HD 3870 X2 Check Price

Mobility Radeon HD 3870 X2 is a Laptop Graphics Card

Note: Mobility Radeon HD 3870 X2 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 Mobility Radeon HD 3870 X2 here:

Mobility Radeon HD 3870 X2 Laptops

Main Specs

	GeForce GTX 660	Mobility Radeon HD 3870 X2
Power consumption (TDP)	140 Watt	110 Watt
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Supplementary power connectors	One 6-pin
Memory type	GDDR5	GDDR3
Maximum RAM amount	2 GB	512 MB
Display Connectors	2x DVI, 1x HDMI, 1x DisplayPort	No outputs
	Check Price	Check Price

GeForce GTX 660 has 27% more power consumption, than Mobility Radeon HD 3870 X2.
GeForce GTX 660 is connected by PCIe 3.0 x16, and Mobility Radeon HD 3870 X2 uses PCIe 2.0 x16 interface.
Mobility Radeon HD 3870 X2 has 510 GB more memory, than GeForce GTX 660.
GeForce GTX 660 is used in Desktops, and Mobility Radeon HD 3870 X2 - in Laptops.
GeForce GTX 660 is build with Kepler architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
Core clock speed of GeForce GTX 660 is 320 MHz higher, than Mobility Radeon HD 3870 X2.
GeForce GTX 660 is manufactured by 28 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
Memory clock speed of Mobility Radeon HD 3870 X2 is 844 MHz higher, than GeForce GTX 660.

Game benchmarks


high / 1080p	20−22	6−7
ultra / 1080p	12−14	4−5
QHD / 1440p	6−7	0−1
4K / 2160p	5−6	−
low / 720p	40−45	16−18
medium / 1080p	24−27	8−9
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 177% more, than Mobility Radeon HD 3870 X2.
high / 1080p	30−35	12−14
ultra / 1080p	27−30	10−11
QHD / 1440p	10−12	0−1
4K / 2160p	8−9	−
low / 720p	65−70	24−27
medium / 1080p	35−40	12−14
The average gaming FPS of GeForce GTX 660 in Battlefield 5 is 173% more, than Mobility Radeon HD 3870 X2.
low / 768p	50−55	45−50
high / 1080p	−	45−50
QHD / 1440p	0−1	0−1
The average gaming FPS of GeForce GTX 660 in Call of Duty: Warzone is 10% more, than Mobility Radeon HD 3870 X2.
low / 768p	230−240	130−140
medium / 768p	200−210	110−120
ultra / 1080p	120−130	50−55
QHD / 1440p	90−95	27−30
4K / 2160p	50−55	27−30
high / 768p	160−170	80−85
The average gaming FPS of GeForce GTX 660 in Counter-Strike: Global Offensive is 98% more, than Mobility Radeon HD 3870 X2.
low / 768p	60−65	55−60
ultra / 1080p	50−55	18−20
medium / 1080p	55−60	45−50
The average gaming FPS of GeForce GTX 660 in Cyberpunk 2077 is 39% more, than Mobility Radeon HD 3870 X2.
low / 768p	120−130	80−85
medium / 768p	100−110	55−60
ultra / 1080p	80−85	30−35
The average gaming FPS of GeForce GTX 660 in Dota 2 is 82% more, than Mobility Radeon HD 3870 X2.
high / 1080p	24−27	8−9
ultra / 1080p	21−24	7−8
QHD / 1440p	18−20	−
4K / 2160p	8−9	3−4
low / 720p	50−55	18−20
medium / 1080p	27−30	8−9
The average gaming FPS of GeForce GTX 660 in Far Cry 5 is 200% more, than Mobility Radeon HD 3870 X2.
high / 1080p	30−35	14−16
ultra / 1080p	24−27	10−11
QHD / 1440p	16−18	−
low / 720p	120−130	60−65
medium / 1080p	70−75	21−24
The average gaming FPS of GeForce GTX 660 in Fortnite is 133% more, than Mobility Radeon HD 3870 X2.
high / 1080p	30−35	12−14
ultra / 1080p	24−27	10−12
QHD / 1440p	14−16	1−2
4K / 2160p	12−14	−
low / 720p	65−70	24−27
medium / 1080p	35−40	14−16
The average gaming FPS of GeForce GTX 660 in Forza Horizon 4 is 169% more, than Mobility Radeon HD 3870 X2.
low / 768p	100−110	50−55
medium / 768p	90−95	45−50
high / 1080p	40−45	12−14
ultra / 1080p	16−18	6−7
QHD / 1440p	7−8	0−1
The average gaming FPS of GeForce GTX 660 in Grand Theft Auto V is 120% more, than Mobility Radeon HD 3870 X2.
high / 1080p	12−14	4−5
ultra / 1080p	10−11	3−4
QHD / 1440p	10−11	−
4K / 2160p	3−4	0−1
low / 720p	40−45	12−14
medium / 1080p	18−20	6−7
The average gaming FPS of GeForce GTX 660 in Metro Exodus is 250% more, than Mobility Radeon HD 3870 X2.
low / 768p	120−130	95−100
high / 1080p	−	85−90
ultra / 1080p	−	80−85
medium / 1080p	110−120	90−95
The average gaming FPS of GeForce GTX 660 in Minecraft is 26% more, than Mobility Radeon HD 3870 X2.
high / 1080p	−	16−18
ultra / 1080p	14−16	14−16
low / 720p	70−75	30−35
medium / 1080p	18−20	18−20
The average gaming FPS of GeForce GTX 660 in PLAYERUNKNOWN'S BATTLEGROUNDS is 59% more, than Mobility Radeon HD 3870 X2.
high / 1080p	14−16	−
ultra / 1080p	10−11	7−8
QHD / 1440p	1−2	0−1
4K / 2160p	1−2	−
low / 720p	35−40	12−14
medium / 1080p	21−24	10−12
The average gaming FPS of GeForce GTX 660 in Red Dead Redemption 2 is 130% more, than Mobility Radeon HD 3870 X2.
low / 768p	70−75	24−27
medium / 768p	45−50	16−18
high / 1080p	24−27	9−10
ultra / 1080p	14−16	6−7
4K / 2160p	8−9	6−7
The average gaming FPS of GeForce GTX 660 in The Witcher 3: Wild Hunt is 153% more, than Mobility Radeon HD 3870 X2.
low / 768p	90−95	85−90
medium / 768p	60−65	45−50
ultra / 1080p	40−45	18−20
high / 768p	55−60	35−40
The average gaming FPS of GeForce GTX 660 in World of Tanks is 34% more, than Mobility Radeon HD 3870 X2.

Full Specs

	GeForce GTX 660	Mobility Radeon HD 3870 X2
Architecture	Kepler	RV6xx
Code name	GK106	M88-XT CF
Type	Desktop	Laptop
Release date	6 September 2012	1 September 2008
Pipelines	960	640
Core clock speed	980 MHz	660 MHz
Boost Clock	1033 MHz
Transistor count	2,540 million	666 million
Manufacturing process technology	28 nm	55 nm
Texture fill rate	78.4 billion/sec	10.56
Floating-point performance	1,981 gflops	2x 422.4 gflops
Length	9.5" (24.1 cm)
Memory bus width	192-bit GDDR5	256 Bit
Memory clock speed	6.0 GB/s	850 MHz
Memory bandwidth	144.2 GB/s	54.4 GB/s
Shared memory		-
DirectX	12 (11_0)	10.1 (10_1)
Shader Model	5.1	4.1
OpenGL	4.3	3.3
OpenCL	1.2	N/A
Vulkan	1.1.126	N/A
CUDA	+
CUDA cores	960
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)	66 Mh/s
Laptop size		large
	Check Price	Check Price

GeForce GTX 660 vs Mobility Radeon HD 3870 X2

Mobility Radeon HD 3870 X2 is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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