GeForce GT 645M vs Radeon HD 6850 X2

When choosing between GeForce GT 645M and Radeon HD 6850 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 GT 645M and Radeon HD 6850 X2.

GeForce GT 645M Check Price

Radeon HD 6850 X2

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 HD 6850 X2
Power consumption (TDP)	32 Watt	254 Watt
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Supplementary power connectors		2x 8-pin
Memory type	DDR3\GDDR5	GDDR5
Maximum RAM amount	2 GB	2 GB
Display Connectors	No outputs	2x DVI, 1x HDMI, 1x DisplayPort
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Radeon HD 6850 X2 has 693% more power consumption, than GeForce GT 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon HD 6850 X2 uses PCIe 2.0 x16 interface.
GeForce GT 645M and Radeon HD 6850 X2 have maximum RAM of 2 GB.
GeForce GT 645M is used in Laptops, and Radeon HD 6850 X2 - in Desktops.
GeForce GT 645M is build with Kepler architecture, and Radeon HD 6850 X2 - with TeraScale 2.
GeForce GT 645M is manufactured by 28 nm process technology, and Radeon HD 6850 X2 - by 40 nm process technology.
Memory clock speed of Radeon HD 6850 X2 is 2400 MHz higher, than GeForce GT 645M.

Game benchmarks


high / 1080p	1−2	12−14
ultra / 1080p	0−1	7−8
QHD / 1440p	0−1	2−3
low / 720p	12−14	27−30
medium / 1080p	2−3	16−18
The average gaming FPS of Radeon HD 6850 X2 in Assassin's Creed Odyssey is 280% more, than GeForce GT 645M.
high / 1080p	−	21−24
ultra / 1080p	3−4	18−20
QHD / 1440p	0−1	4−5
low / 720p	12−14	45−50
medium / 1080p	4−5	21−24
The average gaming FPS of Radeon HD 6850 X2 in Battlefield 5 is 314% more, than GeForce GT 645M.
low / 768p	50−55	45−50
high / 1080p	45−50	−
QHD / 1440p	0−1	0−1
The average gaming FPS of GeForce GT 645M in Call of Duty: Warzone is 10% more, than Radeon HD 6850 X2.
low / 768p	110−120	190−200
medium / 768p	85−90	160−170
ultra / 1080p	35−40	85−90
QHD / 1440p	−	45−50
4K / 2160p	10−11	30−33
high / 768p	60−65	120−130
The average gaming FPS of Radeon HD 6850 X2 in Counter-Strike: Global Offensive is 93% more, than GeForce GT 645M.
low / 768p	70−75	55−60
ultra / 1080p	14−16	35−40
medium / 1080p	45−50	45−50
The average gaming FPS of Radeon HD 6850 X2 in Cyberpunk 2077 is 4% more, than GeForce GT 645M.
low / 768p	70−75	100−110
medium / 768p	45−50	85−90
ultra / 1080p	18−20	55−60
The average gaming FPS of Radeon HD 6850 X2 in Dota 2 is 80% more, than GeForce GT 645M.
high / 1080p	2−3	14−16
ultra / 1080p	2−3	14−16
4K / 2160p	0−1	5−6
low / 720p	10−11	30−35
medium / 1080p	3−4	16−18
The average gaming FPS of Radeon HD 6850 X2 in Far Cry 5 is 375% more, than GeForce GT 645M.
high / 1080p	−	21−24
ultra / 1080p	5−6	16−18
QHD / 1440p	1−2	16−18
low / 720p	45−50	85−90
medium / 1080p	8−9	45−50
The average gaming FPS of Radeon HD 6850 X2 in Fortnite is 180% more, than GeForce GT 645M.
high / 1080p	3−4	21−24
ultra / 1080p	−	16−18
QHD / 1440p	0−1	7−8
low / 720p	14−16	45−50
medium / 1080p	6−7	24−27
The average gaming FPS of Radeon HD 6850 X2 in Forza Horizon 4 is 287% more, than GeForce GT 645M.
low / 768p	40−45	75−80
medium / 768p	−	65−70
high / 1080p	3−4	24−27
ultra / 1080p	2−3	10−11
QHD / 1440p	0−1	1−2
medium / 720p	35−40	−
The average gaming FPS of Radeon HD 6850 X2 in Grand Theft Auto V is 131% more, than GeForce GT 645M.
high / 1080p	1−2	8−9
ultra / 1080p	0−1	6−7
4K / 2160p	0−1	2−3
low / 720p	3−4	24−27
medium / 1080p	2−3	10−12
The average gaming FPS of Radeon HD 6850 X2 in Metro Exodus is 650% more, than GeForce GT 645M.
low / 768p	85−90	100−110
high / 1080p	55−60	−
ultra / 1080p	−	95−100
medium / 1080p	−	100−110
The average gaming FPS of Radeon HD 6850 X2 in Minecraft is 20% more, than GeForce GT 645M.
high / 1080p	14−16	21−24
ultra / 1080p	12−14	16−18
low / 720p	24−27	50−55
medium / 1080p	14−16	21−24
The average gaming FPS of Radeon HD 6850 X2 in PLAYERUNKNOWN'S BATTLEGROUNDS is 64% more, than GeForce GT 645M.
high / 1080p	−	12−14
ultra / 1080p	3−4	9−10
QHD / 1440p	0−1	0−1
low / 720p	4−5	24−27
medium / 1080p	−	14−16
The average gaming FPS of Radeon HD 6850 X2 in Red Dead Redemption 2 is 325% more, than GeForce GT 645M.
low / 768p	8−9	45−50
medium / 768p	7−8	27−30
high / 1080p	3−4	16−18
ultra / 1080p	3−4	9−10
4K / 2160p	0−1	7−8
The average gaming FPS of Radeon HD 6850 X2 in The Witcher 3: Wild Hunt is 400% more, than GeForce GT 645M.
low / 768p	70−75	95−100
medium / 768p	35−40	55−60
ultra / 1080p	12−14	30−35
high / 768p	30−33	50−55
The average gaming FPS of Radeon HD 6850 X2 in World of Tanks is 57% more, than GeForce GT 645M.

Full Specs

	GeForce GT 645M	Radeon HD 6850 X2
Architecture	Kepler	TeraScale 2
Code name	N13P-GS	Barts
Type	Laptop	Desktop
Release date	22 March 2012	19 September 2011
Pipelines	384	960
Core clock speed		800 MHz
Transistor count	1,270 million	1,700 million
Manufacturing process technology	28 nm	40 nm
Texture fill rate	22.7 billion/sec	38.40
Floating-point performance	544.5 gflops	2x 1,536.0 gflops
Memory bus width	128bit	256 Bit
Memory clock speed	1800 MHz	4200 MHz
Memory bandwidth		134.4 GB/s
Shared memory	-
DirectX	12 API	11.2 (11_0)
Shader Model	5.1	5.0
OpenGL	4.5	4.4
OpenCL	1.1	1.2
Vulkan	1.1.126	N/A
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 HD 6850 X2

GeForce GT 645M is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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