GeForce GT 645M vs Radeon 550X

When choosing between GeForce GT 645M and Radeon 550X, 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 GT 645M and Radeon 550X.

GeForce GT 645M Check Price

Radeon 550X

GeForce GT 645M is a Laptop Graphics Card

Note: GeForce GT 645M 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 645M here:

GeForce GT 645M Laptops

Main Specs

	GeForce GT 645M	Radeon 550X
Power consumption (TDP)	32 Watt	50 Watt
Interface	PCIe 3.0 x16	PCIe 3.0 x8
Supplementary power connectors		None
Memory type	DDR3\GDDR5	GDDR5
Maximum RAM amount	2 GB	2 GB
Display Connectors	No outputs	1x DVI, 1x HDMI, 1x DisplayPort
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Radeon 550X has 56% more power consumption, than GeForce GT 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon 550X uses PCIe 3.0 x8 interface.
GeForce GT 645M and Radeon 550X have maximum RAM of 2 GB.
GeForce GT 645M is used in Laptops, and Radeon 550X - in Desktops.
GeForce GT 645M is build with Kepler architecture, and Radeon 550X - with GCN 4.0.
GeForce GT 645M is manufactured by 28 nm process technology, and Radeon 550X - by 14 nm process technology.
Memory clock speed of Radeon 550X is 5200 MHz higher, than GeForce GT 645M.

Game benchmarks


high / 1080p	1−2	7−8
ultra / 1080p	0−1	4−5
QHD / 1440p	0−1	0−1
low / 720p	12−14	16−18
medium / 1080p	2−3	9−10
The average gaming FPS of Radeon 550X in Assassin's Creed Odyssey is 120% more, than GeForce GT 645M.
high / 1080p	−	12−14
ultra / 1080p	3−4	10−12
QHD / 1440p	0−1	0−1
low / 720p	12−14	24−27
medium / 1080p	4−5	12−14
The average gaming FPS of Radeon 550X in Battlefield 5 is 128% more, than GeForce GT 645M.
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 645M in Call of Duty: Warzone is 6% more, than Radeon 550X.
low / 768p	110−120	140−150
medium / 768p	85−90	110−120
ultra / 1080p	35−40	55−60
QHD / 1440p	−	30−35
4K / 2160p	10−11	27−30
high / 768p	60−65	85−90
The average gaming FPS of Radeon 550X in Counter-Strike: Global Offensive is 38% more, than GeForce GT 645M.
low / 768p	70−75	55−60
ultra / 1080p	14−16	20−22
medium / 1080p	45−50	45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 7% more, than Radeon 550X.
low / 768p	70−75	80−85
medium / 768p	45−50	60−65
ultra / 1080p	18−20	35−40
The average gaming FPS of Radeon 550X in Dota 2 is 30% more, than GeForce GT 645M.
high / 1080p	2−3	8−9
ultra / 1080p	2−3	8−9
4K / 2160p	0−1	4−5
low / 720p	10−11	20−22
medium / 1080p	3−4	9−10
The average gaming FPS of Radeon 550X in Far Cry 5 is 175% more, than GeForce GT 645M.
high / 1080p	−	14−16
ultra / 1080p	5−6	10−12
QHD / 1440p	1−2	−
low / 720p	45−50	60−65
medium / 1080p	8−9	24−27
The average gaming FPS of Radeon 550X in Fortnite is 65% more, than GeForce GT 645M.
high / 1080p	3−4	12−14
ultra / 1080p	−	10−12
QHD / 1440p	0−1	1−2
low / 720p	14−16	27−30
medium / 1080p	6−7	14−16
The average gaming FPS of Radeon 550X in Forza Horizon 4 is 125% more, than GeForce GT 645M.
low / 768p	40−45	55−60
medium / 768p	−	45−50
high / 1080p	3−4	12−14
ultra / 1080p	2−3	6−7
QHD / 1440p	0−1	0−1
medium / 720p	35−40	−
The average gaming FPS of Radeon 550X in Grand Theft Auto V is 56% more, than GeForce GT 645M.
high / 1080p	1−2	5−6
ultra / 1080p	0−1	3−4
4K / 2160p	0−1	0−1
low / 720p	3−4	12−14
medium / 1080p	2−3	7−8
The average gaming FPS of Radeon 550X in Metro Exodus is 300% more, than GeForce GT 645M.
low / 768p	85−90	95−100
high / 1080p	55−60	90−95
ultra / 1080p	−	80−85
medium / 1080p	−	90−95
The average gaming FPS of Radeon 550X in Minecraft is 31% more, than GeForce GT 645M.
high / 1080p	14−16	16−18
ultra / 1080p	12−14	14−16
low / 720p	24−27	30−35
medium / 1080p	14−16	18−20
The average gaming FPS of Radeon 550X in PLAYERUNKNOWN'S BATTLEGROUNDS is 17% more, than GeForce GT 645M.
ultra / 1080p	3−4	7−8
QHD / 1440p	0−1	0−1
low / 720p	4−5	12−14
medium / 1080p	−	10−12
The average gaming FPS of Radeon 550X in Red Dead Redemption 2 is 150% more, than GeForce GT 645M.
low / 768p	8−9	24−27
medium / 768p	7−8	16−18
high / 1080p	3−4	10−11
ultra / 1080p	3−4	6−7
4K / 2160p	0−1	6−7
The average gaming FPS of Radeon 550X in The Witcher 3: Wild Hunt is 180% more, than GeForce GT 645M.
low / 768p	70−75	85−90
medium / 768p	35−40	45−50
ultra / 1080p	12−14	20−22
high / 768p	30−33	35−40
The average gaming FPS of Radeon 550X in World of Tanks is 26% more, than GeForce GT 645M.

Full Specs

	GeForce GT 645M	Radeon 550X
Architecture	Kepler	GCN 4.0
Code name	N13P-GS	Lexa
Type	Laptop	Desktop
Release date	22 March 2012	27 March 2019
Pipelines	384	512
Core clock speed		1082 MHz
Boost Clock		1218 MHz
Transistor count	1,270 million	2,200 million
Manufacturing process technology	28 nm	14 nm
Texture fill rate	22.7 billion/sec	38.98
Floating-point performance	544.5 gflops
Length		145 mm
Memory bus width	128bit	128 Bit
Memory clock speed	1800 MHz	7000 MHz
Memory bandwidth		112.0 GB/s
Shared memory	-
DirectX	12 API	12 (12_0)
Shader Model	5.1	6.4
OpenGL	4.5	4.6
OpenCL	1.1	2.0
Vulkan	1.1.126	1.2.131
CUDA	+
CUDA cores	384
Bus support	PCI Express 2.0, PCI Express 3.0
HDMI	+
HDCP	+
Maximum VGA resolution	Up to 2048x1536
3D Blu-Ray	+
Bitcoin / BTC (SHA256)	19 Mh/s
Laptop size	medium sized
Optimus	+
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GeForce GT 645M vs Radeon 550X

GeForce GT 645M is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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