GeForce GT 645M vs Radeon HD 7870

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and Radeon HD 7870. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 645M and Radeon HD 7870. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

GeForce GT 645M Check Price

Radeon HD 7870 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 GT 645M	Radeon HD 7870
Power consumption (TDP)	32 Watt	175 Watt
Interface	PCIe 3.0 x16
Memory type	DDR3\GDDR5	GDDR5
Maximum RAM amount	2 GB	2 GB
Display Connectors	No outputs
	Check Price	Check Price

Radeon HD 7870 has 446% more power consumption, than GeForce GT 645M.
GeForce GT 645M and Radeon HD 7870 have maximum RAM of 2 GB.
GeForce GT 645M is used in Laptops, and Radeon HD 7870 - in Desktops.
GeForce GT 645M is build with Kepler architecture, and Radeon HD 7870 - with GCN.
GeForce GT 645M and Radeon HD 7870 are manufactured by 28 nm process technology.
Memory clock speed of Radeon HD 7870 is 3000 MHz higher, than GeForce GT 645M.

Game benchmarks


high / 1080p	1−2	24−27
ultra / 1080p	0−1	14−16
QHD / 1440p	0−1	9−10
4K / 2160p	−	6−7
low / 720p	12−14	45−50
medium / 1080p	2−3	30−33
The average gaming FPS of Radeon HD 7870 in Assassin's Creed Odyssey is 580% more, than GeForce GT 645M.
high / 1080p	−	35−40
ultra / 1080p	3−4	30−35
QHD / 1440p	0−1	16−18
4K / 2160p	−	10−11
low / 720p	12−14	75−80
medium / 1080p	4−5	40−45
The average gaming FPS of Radeon HD 7870 in Battlefield 5 is 614% more, than GeForce GT 645M.
low / 768p	50−55	50−55
high / 1080p	45−50	−
QHD / 1440p	0−1	0−1
GeForce GT 645M and Radeon HD 7870 have the same average FPS in Call of Duty: Warzone.
low / 768p	110−120	240−250
medium / 768p	85−90	210−220
ultra / 1080p	35−40	130−140
QHD / 1440p	−	100−110
4K / 2160p	10−11	60−65
high / 768p	60−65	180−190
The average gaming FPS of Radeon HD 7870 in Counter-Strike: Global Offensive is 170% more, than GeForce GT 645M.
low / 768p	70−75	60−65
ultra / 1080p	14−16	−
medium / 1080p	45−50	55−60
GeForce GT 645M and Radeon HD 7870 have the same average FPS in Cyberpunk 2077.
low / 768p	70−75	120−130
medium / 768p	45−50	110−120
ultra / 1080p	18−20	85−90
The average gaming FPS of Radeon HD 7870 in Dota 2 is 136% more, than GeForce GT 645M.
high / 1080p	2−3	30−33
ultra / 1080p	2−3	27−30
QHD / 1440p	−	21−24
4K / 2160p	0−1	9−10
low / 720p	10−11	60−65
medium / 1080p	3−4	30−35
The average gaming FPS of Radeon HD 7870 in Far Cry 5 is 850% more, than GeForce GT 645M.
high / 1080p	−	35−40
ultra / 1080p	5−6	30−33
QHD / 1440p	1−2	18−20
low / 720p	45−50	130−140
medium / 1080p	8−9	80−85
The average gaming FPS of Radeon HD 7870 in Fortnite is 346% more, than GeForce GT 645M.
high / 1080p	3−4	40−45
ultra / 1080p	−	30−33
QHD / 1440p	0−1	18−20
4K / 2160p	−	14−16
low / 720p	14−16	75−80
medium / 1080p	6−7	45−50
The average gaming FPS of Radeon HD 7870 in Forza Horizon 4 is 587% more, than GeForce GT 645M.
low / 768p	40−45	110−120
medium / 768p	−	100−110
high / 1080p	3−4	45−50
ultra / 1080p	2−3	20−22
QHD / 1440p	0−1	10−11
medium / 720p	35−40	−
The average gaming FPS of Radeon HD 7870 in Grand Theft Auto V is 281% more, than GeForce GT 645M.
high / 1080p	1−2	14−16
ultra / 1080p	0−1	12−14
QHD / 1440p	−	10−12
4K / 2160p	0−1	4−5
low / 720p	3−4	45−50
medium / 1080p	2−3	21−24
The average gaming FPS of Radeon HD 7870 in Metro Exodus is 1300% more, than GeForce GT 645M.
low / 768p	85−90	120−130
high / 1080p	55−60	−
medium / 1080p	−	110−120
The average gaming FPS of Radeon HD 7870 in Minecraft is 43% more, than GeForce GT 645M.
high / 1080p	14−16	−
ultra / 1080p	12−14	14−16
low / 720p	24−27	75−80
medium / 1080p	14−16	18−20
The average gaming FPS of Radeon HD 7870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 117% more, than GeForce GT 645M.
high / 1080p	−	16−18
ultra / 1080p	3−4	10−12
QHD / 1440p	0−1	4−5
4K / 2160p	−	2−3
low / 720p	4−5	45−50
medium / 1080p	−	24−27
The average gaming FPS of Radeon HD 7870 in Red Dead Redemption 2 is 625% more, than GeForce GT 645M.
low / 768p	8−9	85−90
medium / 768p	7−8	50−55
high / 1080p	3−4	30−33
ultra / 1080p	3−4	16−18
4K / 2160p	0−1	10−11
The average gaming FPS of Radeon HD 7870 in The Witcher 3: Wild Hunt is 840% more, than GeForce GT 645M.
low / 768p	70−75	90−95
medium / 768p	35−40	60−65
ultra / 1080p	12−14	45−50
high / 768p	30−33	55−60
The average gaming FPS of Radeon HD 7870 in World of Tanks is 71% more, than GeForce GT 645M.

Full Specs

	GeForce GT 645M	Radeon HD 7870
Architecture	Kepler	GCN
Code name	N13P-GS	Pitcairn XT
Type	Laptop	Desktop
Release date	22 March 2012	5 March 2012
Pipelines	384	1280
Core clock speed		1000 MHz
Transistor count	1,270 million	2800 Million
Manufacturing process technology	28 nm	28 nm
Texture fill rate	22.7 billion/sec
Floating-point performance	544.5 gflops
Memory bus width	128bit	256 Bit
Memory clock speed	1800 MHz	4800 MHz
Shared memory	-	-
DirectX	12 API	DirectX 11.1, Shader 5.1
Shader Model	5.1
OpenGL	4.5
OpenCL	1.1
Vulkan	1.1.126
CUDA	+
Monero / XMR (CryptoNight)		0.39 kh/s
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	+
Eyefinity		+
Decred / DCR (Decred)		0.63 Gh/s
Ethereum / ETH (DaggerHashimoto)		16.6 Mh/s
Zcash / ZEC (Equihash)		145 Sol/s
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GeForce GT 645M vs Radeon HD 7870

GeForce GT 645M is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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