GeForce GT 645M vs Radeon R9 M485X
In this comparison between GeForce GT 645M and Radeon R9 M485X 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 R9 M485X will be their preference. Study the comparison tables below and make your choice.
GeForce GT 645M and Radeon R9 M485X are Laptop Graphics Cards
Note: GeForce GT 645M and Radeon R9 M485X are only used in laptop graphics. They have 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 or Radeon R9 M485X here:
Main Specs
GeForce GT 645M
Radeon R9 M485X
Power consumption (TDP)
32 Watt
250 Watt
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
None
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
8 GB MB
Display Connectors
No outputs
No outputs
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Radeon R9 M485X has 681% more power consumption, than GeForce GT 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon R9 M485X uses MXM-B (3.0) interface.
Radeon R9 M485X has 6 GB more memory, than GeForce GT 645M.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and Radeon R9 M485X - with GCN 3.
GeForce GT 645M and Radeon R9 M485X are manufactured by 28 nm process technology.
Memory clock speed of Radeon R9 M485X is 3200 MHz higher, than GeForce GT 645M.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
1−2
24−27
ultra / 1080p
0−1
14−16
QHD / 1440p
0−1
10−11
4K / 2160p
−
6−7
low / 720p
12−14
45−50
medium / 1080p
2−3
30−35
The average gaming FPS of Radeon R9 M485X in Assassin's Creed Odyssey is 600% more, than GeForce GT 645M.
high / 1080p
−
35−40
ultra / 1080p
3−4
30−35
QHD / 1440p
0−1
18−20
4K / 2160p
−
10−12
low / 720p
12−14
80−85
medium / 1080p
4−5
45−50
The average gaming FPS of Radeon R9 M485X in Battlefield 5 is 671% 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 R9 M485X 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
140−150
QHD / 1440p
−
110−120
4K / 2160p
10−11
60−65
high / 768p
60−65
180−190
The average gaming FPS of Radeon R9 M485X in Counter-Strike: Global Offensive is 174% 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 R9 M485X have the same average FPS in Cyberpunk 2077.
low / 768p
70−75
120−130
medium / 768p
45−50
110−120
ultra / 1080p
18−20
90−95
The average gaming FPS of Radeon R9 M485X in Dota 2 is 139% more, than GeForce GT 645M.
high / 1080p
2−3
30−35
ultra / 1080p
2−3
27−30
QHD / 1440p
−
21−24
4K / 2160p
0−1
10−11
low / 720p
10−11
60−65
medium / 1080p
3−4
30−35
The average gaming FPS of Radeon R9 M485X in Far Cry 5 is 875% more, than GeForce GT 645M.
high / 1080p
−
40−45
ultra / 1080p
5−6
30−35
QHD / 1440p
1−2
18−20
low / 720p
45−50
140−150
medium / 1080p
8−9
85−90
The average gaming FPS of Radeon R9 M485X in Fortnite is 373% more, than GeForce GT 645M.
high / 1080p
3−4
40−45
ultra / 1080p
−
30−35
QHD / 1440p
0−1
18−20
4K / 2160p
−
16−18
low / 720p
14−16
80−85
medium / 1080p
6−7
45−50
The average gaming FPS of Radeon R9 M485X in Forza Horizon 4 is 612% more, than GeForce GT 645M.
low / 768p
40−45
110−120
medium / 768p
−
100−110
high / 1080p
3−4
50−55
ultra / 1080p
2−3
21−24
QHD / 1440p
0−1
10−12
medium / 720p
35−40
−
The average gaming FPS of Radeon R9 M485X in Grand Theft Auto V is 293% more, than GeForce GT 645M.
high / 1080p
1−2
16−18
ultra / 1080p
0−1
12−14
QHD / 1440p
−
12−14
4K / 2160p
0−1
4−5
low / 720p
3−4
45−50
medium / 1080p
2−3
21−24
The average gaming FPS of Radeon R9 M485X in Metro Exodus is 1350% 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 R9 M485X in Minecraft is 43% more, than GeForce GT 645M.
high / 1080p
14−16
−
ultra / 1080p
12−14
14−16
low / 720p
24−27
80−85
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon R9 M485X in PLAYERUNKNOWN'S BATTLEGROUNDS is 123% more, than GeForce GT 645M.
high / 1080p
−
18−20
ultra / 1080p
3−4
12−14
QHD / 1440p
0−1
4−5
4K / 2160p
−
3−4
low / 720p
4−5
45−50
medium / 1080p
−
24−27
The average gaming FPS of Radeon R9 M485X in Red Dead Redemption 2 is 650% more, than GeForce GT 645M.
low / 768p
8−9
90−95
medium / 768p
7−8
55−60
high / 1080p
3−4
30−35
ultra / 1080p
3−4
18−20
4K / 2160p
0−1
10−11
The average gaming FPS of Radeon R9 M485X in The Witcher 3: Wild Hunt is 900% 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 R9 M485X in World of Tanks is 71% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Radeon R9 M485X
Architecture
Kepler
GCN 3
Code name
N13P-GS
Amethyst
Type
Laptop
Laptop
Release date
22 March 2012
14 May 2016
Pipelines
384
2048
Core clock speed
723 MHz
Transistor count
1,270 million
5,000 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
22.7 billion/sec
92.54
Floating-point performance
544.5 gflops
2,961 gflops
Memory bus width
128bit
256 Bit
Memory clock speed
1800 MHz
5000 MHz
Memory bandwidth
160.0 GB/s
Shared memory
-
-
DirectX
12 API
12 (12_0)
Shader Model
5.1
6.3
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
large
Optimus
+
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