GeForce GTX 660 vs Radeon RX 550X

If you are going to buy a new graphics card and are choosing between GeForce GTX 660 and Radeon RX 550X, 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 stacks up against Radeon RX 550X, check out specs charts below.

GeForce GTX 660 Check Price

Radeon RX 550X

Main Specs

	GeForce GTX 660	Radeon RX 550X
Power consumption (TDP)	140 Watt	50 Watt
Interface	PCIe 3.0 x16	PCIe 3.0 x8
Supplementary power connectors	One 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
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GeForce GTX 660 has 180% more power consumption, than Radeon RX 550X.
GeForce GTX 660 is connected by PCIe 3.0 x16, and Radeon RX 550X uses PCIe 3.0 x8 interface.
Radeon RX 550X has 2 GB more memory, than GeForce GTX 660.
Both cards are used in Desktops.
GeForce GTX 660 is build with Kepler architecture, and Radeon RX 550X - with GCN 4.0.
Core clock speed of Radeon RX 550X is 120 MHz higher, than GeForce GTX 660.
GeForce GTX 660 is manufactured by 28 nm process technology, and Radeon RX 550X - by 14 nm process technology.
Radeon RX 550X is 136 mm longer, than GeForce GTX 660.
Memory clock speed of Radeon RX 550X is 5994 MHz higher, than GeForce GTX 660.

Game benchmarks


high / 1080p	20−22	10−11
ultra / 1080p	12−14	6−7
QHD / 1440p	6−7	0−1
4K / 2160p	5−6	−
low / 720p	40−45	21−24
medium / 1080p	24−27	12−14
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 92% more, than Radeon RX 550X.
high / 1080p	30−35	16−18
ultra / 1080p	27−30	14−16
QHD / 1440p	10−12	0−1
4K / 2160p	8−9	−
low / 720p	65−70	35−40
medium / 1080p	35−40	18−20
The average gaming FPS of GeForce GTX 660 in Battlefield 5 is 86% more, than Radeon RX 550X.
low / 768p	50−55	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 Radeon RX 550X.
low / 768p	230−240	170−180
medium / 768p	200−210	140−150
ultra / 1080p	120−130	70−75
QHD / 1440p	90−95	40−45
4K / 2160p	50−55	30−33
high / 768p	160−170	100−110
The average gaming FPS of GeForce GTX 660 in Counter-Strike: Global Offensive is 52% more, than Radeon RX 550X.
low / 768p	60−65	55−60
ultra / 1080p	50−55	27−30
medium / 1080p	55−60	45−50
The average gaming FPS of GeForce GTX 660 in Cyberpunk 2077 is 29% more, than Radeon RX 550X.
low / 768p	120−130	90−95
medium / 768p	100−110	75−80
ultra / 1080p	80−85	45−50
The average gaming FPS of GeForce GTX 660 in Dota 2 is 44% more, than Radeon RX 550X.
high / 1080p	24−27	12−14
ultra / 1080p	21−24	10−12
QHD / 1440p	18−20	−
4K / 2160p	8−9	4−5
low / 720p	50−55	27−30
medium / 1080p	27−30	12−14
The average gaming FPS of GeForce GTX 660 in Far Cry 5 is 92% more, than Radeon RX 550X.
high / 1080p	30−35	18−20
ultra / 1080p	24−27	14−16
QHD / 1440p	16−18	−
low / 720p	120−130	75−80
medium / 1080p	70−75	35−40
The average gaming FPS of GeForce GTX 660 in Fortnite is 70% more, than Radeon RX 550X.
high / 1080p	30−35	16−18
ultra / 1080p	24−27	14−16
QHD / 1440p	14−16	4−5
4K / 2160p	12−14	−
low / 720p	65−70	35−40
medium / 1080p	35−40	20−22
The average gaming FPS of GeForce GTX 660 in Forza Horizon 4 is 84% more, than Radeon RX 550X.
low / 768p	100−110	65−70
medium / 768p	90−95	55−60
high / 1080p	40−45	18−20
ultra / 1080p	16−18	8−9
QHD / 1440p	7−8	0−1
The average gaming FPS of GeForce GTX 660 in Grand Theft Auto V is 68% more, than Radeon RX 550X.
high / 1080p	12−14	6−7
ultra / 1080p	10−11	5−6
QHD / 1440p	10−11	−
4K / 2160p	3−4	1−2
low / 720p	40−45	18−20
medium / 1080p	18−20	9−10
The average gaming FPS of GeForce GTX 660 in Metro Exodus is 112% more, than Radeon RX 550X.
low / 768p	120−130	100−110
ultra / 1080p	−	90−95
medium / 1080p	110−120	95−100
The average gaming FPS of GeForce GTX 660 in Minecraft is 18% more, than Radeon RX 550X.
high / 1080p	−	18−20
ultra / 1080p	14−16	14−16
low / 720p	70−75	40−45
medium / 1080p	18−20	20−22
The average gaming FPS of GeForce GTX 660 in PLAYERUNKNOWN'S BATTLEGROUNDS is 34% more, than Radeon RX 550X.
high / 1080p	14−16	12−14
ultra / 1080p	10−11	8−9
QHD / 1440p	1−2	0−1
4K / 2160p	1−2	−
low / 720p	35−40	18−20
medium / 1080p	21−24	12−14
The average gaming FPS of GeForce GTX 660 in Red Dead Redemption 2 is 61% more, than Radeon RX 550X.
low / 768p	70−75	35−40
medium / 768p	45−50	21−24
high / 1080p	24−27	12−14
ultra / 1080p	14−16	8−9
4K / 2160p	8−9	7−8
The average gaming FPS of GeForce GTX 660 in The Witcher 3: Wild Hunt is 94% more, than Radeon RX 550X.
low / 768p	90−95	90−95
medium / 768p	60−65	50−55
ultra / 1080p	40−45	24−27
high / 768p	55−60	45−50
The average gaming FPS of GeForce GTX 660 in World of Tanks is 16% more, than Radeon RX 550X.

Full Specs

	GeForce GTX 660	Radeon RX 550X
Architecture	Kepler	GCN 4.0
Code name	GK106	Lexa
Type	Desktop	Desktop
Release date	6 September 2012	16 December 2018
Pipelines	960	512
Core clock speed	980 MHz	1100 MHz
Boost Clock	1033 MHz	1183 MHz
Transistor count	2,540 million	2,200 million
Manufacturing process technology	28 nm	14 nm
Texture fill rate	78.4 billion/sec	37.86
Floating-point performance	1,981 gflops	1,211 gflops
Length	9.5" (24.1 cm)	145 mm
Memory bus width	192-bit GDDR5	128 Bit
Memory clock speed	6.0 GB/s	6000 MHz
Memory bandwidth	144.2 GB/s	96 GB/s
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	+
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
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GeForce GTX 660 vs Radeon RX 550X

Main Specs

Game benchmarks

Full Specs

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