GeForce GT 645M vs Radeon HD 4770

In this comparison between GeForce GT 645M and Radeon HD 4770 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 645M will be the best choice, for others Radeon HD 4770 will be their preference. Study the comparison tables below and make your choice.

GeForce GT 645M Check Price

Radeon HD 4770

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 4770
Power consumption (TDP)	32 Watt	80 Watt
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Supplementary power connectors		1x 6-pin
Memory type	DDR3\GDDR5	GDDR5
Maximum RAM amount	2 GB	512 MB
Display Connectors	No outputs	2x DVI, 1x S-Video
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Radeon HD 4770 has 150% more power consumption, than GeForce GT 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon HD 4770 uses PCIe 2.0 x16 interface.
Radeon HD 4770 has 510 GB more memory, than GeForce GT 645M.
GeForce GT 645M is used in Laptops, and Radeon HD 4770 - in Desktops.
GeForce GT 645M is build with Kepler architecture, and Radeon HD 4770 - with TeraScale.
GeForce GT 645M is manufactured by 28 nm process technology, and Radeon HD 4770 - by 40 nm process technology.
Memory clock speed of Radeon HD 4770 is 1400 MHz higher, than GeForce GT 645M.

Game benchmarks


high / 1080p	1−2	1−2
ultra / 1080p	0−1	0−1
QHD / 1440p	0−1	0−1
low / 720p	12−14	10−12
medium / 1080p	2−3	2−3
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Assassin's Creed Odyssey.
ultra / 1080p	3−4	3−4
QHD / 1440p	0−1	0−1
low / 720p	12−14	12−14
medium / 1080p	4−5	4−5
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Battlefield 5.
low / 768p	50−55	50−55
high / 1080p	45−50	45−50
QHD / 1440p	0−1	0−1
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Call of Duty: Warzone.
low / 768p	110−120	110−120
medium / 768p	85−90	85−90
ultra / 1080p	35−40	35−40
4K / 2160p	10−11	10−11
high / 768p	60−65	60−65
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Counter-Strike: Global Offensive.
low / 768p	70−75	70−75
ultra / 1080p	14−16	14−16
medium / 1080p	45−50	45−50
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Cyberpunk 2077.
low / 768p	70−75	70−75
medium / 768p	45−50	45−50
ultra / 1080p	18−20	18−20
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Dota 2.
high / 1080p	2−3	2−3
ultra / 1080p	2−3	2−3
4K / 2160p	0−1	0−1
low / 720p	10−11	10−11
medium / 1080p	3−4	3−4
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Far Cry 5.
ultra / 1080p	5−6	5−6
QHD / 1440p	1−2	1−2
low / 720p	45−50	45−50
medium / 1080p	8−9	8−9
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Fortnite.
high / 1080p	3−4	3−4
QHD / 1440p	0−1	0−1
low / 720p	14−16	14−16
medium / 1080p	6−7	5−6
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Forza Horizon 4.
low / 768p	40−45	40−45
high / 1080p	3−4	3−4
ultra / 1080p	2−3	2−3
QHD / 1440p	0−1	0−1
medium / 720p	35−40	35−40
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Grand Theft Auto V.
high / 1080p	1−2	1−2
ultra / 1080p	0−1	0−1
4K / 2160p	0−1	0−1
low / 720p	3−4	3−4
medium / 1080p	2−3	2−3
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Metro Exodus.
low / 768p	85−90	85−90
high / 1080p	55−60	55−60
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Minecraft.
high / 1080p	14−16	14−16
ultra / 1080p	12−14	12−14
low / 720p	24−27	24−27
medium / 1080p	14−16	14−16
GeForce GT 645M and Radeon HD 4770 have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
ultra / 1080p	3−4	3−4
QHD / 1440p	0−1	0−1
low / 720p	4−5	4−5
GeForce GT 645M and Radeon HD 4770 have the same average FPS in Red Dead Redemption 2.
low / 768p	8−9	8−9
medium / 768p	7−8	7−8
high / 1080p	3−4	3−4
ultra / 1080p	3−4	3−4
4K / 2160p	0−1	0−1
GeForce GT 645M and Radeon HD 4770 have the same average FPS in The Witcher 3: Wild Hunt.
low / 768p	70−75	70−75
medium / 768p	35−40	35−40
ultra / 1080p	12−14	12−14
high / 768p	30−33	30−33
GeForce GT 645M and Radeon HD 4770 have the same average FPS in World of Tanks.

Full Specs

	GeForce GT 645M	Radeon HD 4770
Architecture	Kepler	TeraScale
Code name	N13P-GS	RV740
Type	Laptop	Desktop
Release date	22 March 2012	28 April 2009
Pipelines	384	640
Core clock speed		750 MHz
Transistor count	1,270 million	826 million
Manufacturing process technology	28 nm	40 nm
Texture fill rate	22.7 billion/sec	24.00
Floating-point performance	544.5 gflops	960.0 gflops
Length		203 mm
Memory bus width	128bit	128 Bit
Memory clock speed	1800 MHz	3200 MHz
Memory bandwidth		51.2 GB/s
Shared memory	-
DirectX	12 API	10.1 (10_1)
Shader Model	5.1	4.1
OpenGL	4.5	3.3
OpenCL	1.1	1.1
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 4770

GeForce GT 645M is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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