GeForce 945A vs GeForce GT 645M

When choosing between GeForce 945A and GeForce GT 645M, 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 945A and GeForce GT 645M.

GeForce 945A

GeForce GT 645M Check Price

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 945A	GeForce GT 645M
Power consumption (TDP)	33 Watt	32 Watt
Interface	PCIe 3.0 x8	PCIe 3.0 x16
Memory type	GDDR5	DDR3\GDDR5
Maximum RAM amount	1 GB	2 GB
Display Connectors	No outputs	No outputs
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GeForce 945A has 3% more power consumption, than GeForce GT 645M.
GeForce 945A is connected by PCIe 3.0 x8, and GeForce GT 645M uses PCIe 3.0 x16 interface.
GeForce GT 645M has 1 GB more memory, than GeForce 945A.
GeForce 945A is used in Desktops, and GeForce GT 645M - in Laptops.
GeForce 945A is build with Maxwell architecture, and GeForce GT 645M - with Kepler.
GeForce 945A and GeForce GT 645M are manufactured by 28 nm process technology.
Memory clock speed of GeForce 945A is 3212 MHz higher, than GeForce GT 645M.

Game benchmarks


high / 1080p	9−10	1−2
ultra / 1080p	5−6	0−1
QHD / 1440p	0−1	0−1
low / 720p	20−22	12−14
medium / 1080p	10−12	2−3
The average gaming FPS of GeForce 945A in Assassin's Creed Odyssey is 160% more, than GeForce GT 645M.
high / 1080p	14−16	−
ultra / 1080p	12−14	3−4
QHD / 1440p	0−1	0−1
low / 720p	30−35	12−14
medium / 1080p	16−18	4−5
The average gaming FPS of GeForce 945A in Battlefield 5 is 185% more, than GeForce GT 645M.
low / 768p	45−50	50−55
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 GeForce 945A.
low / 768p	160−170	110−120
medium / 768p	130−140	85−90
ultra / 1080p	65−70	35−40
QHD / 1440p	35−40	−
4K / 2160p	27−30	10−11
high / 768p	95−100	60−65
The average gaming FPS of GeForce 945A in Counter-Strike: Global Offensive is 58% more, than GeForce GT 645M.
low / 768p	55−60	70−75
ultra / 1080p	24−27	14−16
medium / 1080p	45−50	45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 4% more, than GeForce 945A.
low / 768p	90−95	70−75
medium / 768p	70−75	45−50
ultra / 1080p	40−45	18−20
The average gaming FPS of GeForce 945A in Dota 2 is 50% more, than GeForce GT 645M.
high / 1080p	10−11	2−3
ultra / 1080p	10−11	2−3
4K / 2160p	4−5	0−1
low / 720p	24−27	10−11
medium / 1080p	10−12	3−4
The average gaming FPS of GeForce 945A in Far Cry 5 is 250% more, than GeForce GT 645M.
high / 1080p	16−18	−
ultra / 1080p	12−14	5−6
QHD / 1440p	−	1−2
low / 720p	70−75	45−50
medium / 1080p	30−35	8−9
The average gaming FPS of GeForce 945A in Fortnite is 95% more, than GeForce GT 645M.
high / 1080p	14−16	3−4
ultra / 1080p	12−14	−
QHD / 1440p	3−4	0−1
low / 720p	30−35	14−16
medium / 1080p	18−20	6−7
The average gaming FPS of GeForce 945A in Forza Horizon 4 is 175% more, than GeForce GT 645M.
low / 768p	60−65	40−45
medium / 768p	50−55	−
high / 1080p	16−18	3−4
ultra / 1080p	8−9	2−3
QHD / 1440p	0−1	0−1
medium / 720p	−	35−40
The average gaming FPS of GeForce 945A in Grand Theft Auto V is 81% more, than GeForce GT 645M.
high / 1080p	6−7	1−2
ultra / 1080p	4−5	0−1
4K / 2160p	1−2	0−1
low / 720p	16−18	3−4
medium / 1080p	8−9	2−3
The average gaming FPS of GeForce 945A in Metro Exodus is 400% more, than GeForce GT 645M.
low / 768p	100−105	85−90
high / 1080p	95−100	55−60
ultra / 1080p	85−90	−
medium / 1080p	95−100	−
The average gaming FPS of GeForce 945A in Minecraft is 38% more, than GeForce GT 645M.
high / 1080p	18−20	14−16
ultra / 1080p	14−16	12−14
low / 720p	35−40	24−27
medium / 1080p	18−20	14−16
The average gaming FPS of GeForce 945A in PLAYERUNKNOWN'S BATTLEGROUNDS is 29% more, than GeForce GT 645M.
high / 1080p	12−14	−
ultra / 1080p	8−9	3−4
QHD / 1440p	0−1	0−1
low / 720p	16−18	4−5
medium / 1080p	12−14	−
The average gaming FPS of GeForce 945A in Red Dead Redemption 2 is 200% more, than GeForce GT 645M.
low / 768p	30−35	8−9
medium / 768p	21−24	7−8
high / 1080p	10−12	3−4
ultra / 1080p	7−8	3−4
4K / 2160p	6−7	0−1
The average gaming FPS of GeForce 945A in The Witcher 3: Wild Hunt is 260% more, than GeForce GT 645M.
low / 768p	90−95	70−75
medium / 768p	50−55	35−40
ultra / 1080p	24−27	12−14
high / 768p	40−45	30−33
The average gaming FPS of GeForce 945A in World of Tanks is 39% more, than GeForce GT 645M.

Full Specs

	GeForce 945A	GeForce GT 645M
Architecture	Maxwell	Kepler
Code name	GM108	N13P-GS
Type	Desktop	Laptop
Release date	13 March 2015	22 March 2012
Pipelines	384	384
Core clock speed	1072 MHz
Boost Clock	1189 MHz
Transistor count		1,270 million
Manufacturing process technology	28 nm	28 nm
Texture fill rate	28.54	22.7 billion/sec
Floating-point performance	903.2 gflops	544.5 gflops
Memory bus width	64 Bit	128bit
Memory clock speed	5012 MHz	1800 MHz
Memory bandwidth	40.1 GB/s
Shared memory		-
DirectX	12 (11_0)	12 API
Shader Model	5.1	5.1
OpenGL	4.6	4.5
OpenCL	1.2	1.1
Vulkan	1.1.126	1.1.126
CUDA	5.0	+
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)	108 Mh/s	19 Mh/s
Laptop size		medium sized
Optimus		+
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GeForce 945A vs GeForce GT 645M

GeForce GT 645M is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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