GeForce GT 645M vs Radeon R6 M340DX
In this comparison between GeForce GT 645M and Radeon R6 M340DX 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 R6 M340DX will be their preference. Study the comparison tables below and make your choice.
GeForce GT 645M and Radeon R6 M340DX are Laptop Graphics Cards
Note: GeForce GT 645M and Radeon R6 M340DX 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 R6 M340DX here:
Main Specs
GeForce GT 645M
Radeon R6 M340DX
Power consumption (TDP)
32 Watt
Interface
PCIe 3.0 x16
IGP
Memory type
DDR3\GDDR5
DDR3
Maximum RAM amount
2 GB
Display Connectors
No outputs
No outputs
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GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon R6 M340DX uses IGP interface.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and Radeon R6 M340DX - with GCN.
GeForce GT 645M and Radeon R6 M340DX are manufactured by 28 nm process technology.
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
2−3
ultra / 1080p
0−1
2−3
QHD / 1440p
0−1
0−1
low / 720p
12−14
10−11
medium / 1080p
2−3
3−4
GeForce GT 645M and Radeon R6 M340DX have the same average FPS in Assassin's Creed Odyssey.
ultra / 1080p
3−4
5−6
QHD / 1440p
0−1
0−1
low / 720p
12−14
12−14
medium / 1080p
4−5
5−6
The average gaming FPS of Radeon R6 M340DX in Battlefield 5 is 14% more, than GeForce GT 645M.
low / 768p
50−55
45−50
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 Radeon R6 M340DX.
low / 768p
110−120
90−95
medium / 768p
85−90
65−70
ultra / 1080p
35−40
30−35
QHD / 1440p
−
21−24
4K / 2160p
10−11
−
high / 768p
60−65
45−50
The average gaming FPS of GeForce GT 645M in Counter-Strike: Global Offensive is 25% more, than Radeon R6 M340DX.
low / 768p
70−75
55−60
ultra / 1080p
14−16
9−10
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 18% more, than Radeon R6 M340DX.
low / 768p
70−75
60−65
medium / 768p
45−50
35−40
ultra / 1080p
18−20
18−20
The average gaming FPS of GeForce GT 645M in Dota 2 is 17% more, than Radeon R6 M340DX.
high / 1080p
2−3
−
ultra / 1080p
2−3
4−5
4K / 2160p
0−1
2−3
low / 720p
10−11
9−10
medium / 1080p
3−4
4−5
The average gaming FPS of Radeon R6 M340DX in Far Cry 5 is 20% more, than GeForce GT 645M.
ultra / 1080p
5−6
7−8
QHD / 1440p
1−2
−
low / 720p
45−50
40−45
medium / 1080p
8−9
8−9
The average gaming FPS of GeForce GT 645M in Fortnite is 5% more, than Radeon R6 M340DX.
high / 1080p
3−4
6−7
QHD / 1440p
0−1
0−1
low / 720p
14−16
12−14
medium / 1080p
6−7
7−8
The average gaming FPS of Radeon R6 M340DX in Forza Horizon 4 is 12% more, than GeForce GT 645M.
low / 768p
40−45
35−40
medium / 768p
−
30−35
high / 1080p
3−4
4−5
ultra / 1080p
2−3
4−5
QHD / 1440p
0−1
0−1
medium / 720p
35−40
−
The average gaming FPS of GeForce GT 645M in Grand Theft Auto V is 6% more, than Radeon R6 M340DX.
high / 1080p
1−2
2−3
ultra / 1080p
0−1
1−2
4K / 2160p
0−1
0−1
low / 720p
3−4
4−5
medium / 1080p
2−3
4−5
The average gaming FPS of Radeon R6 M340DX in Metro Exodus is 50% more, than GeForce GT 645M.
low / 768p
85−90
85−90
high / 1080p
55−60
75−80
ultra / 1080p
−
65−70
The average gaming FPS of Radeon R6 M340DX in Minecraft is 13% more, than GeForce GT 645M.
high / 1080p
14−16
14−16
ultra / 1080p
12−14
12−14
low / 720p
24−27
20−22
medium / 1080p
14−16
16−18
The average gaming FPS of GeForce GT 645M in PLAYERUNKNOWN'S BATTLEGROUNDS is 6% more, than Radeon R6 M340DX.
ultra / 1080p
3−4
−
QHD / 1440p
0−1
0−1
low / 720p
4−5
4−5
GeForce GT 645M and Radeon R6 M340DX have the same average FPS in Red Dead Redemption 2.
low / 768p
8−9
10−12
medium / 768p
7−8
9−10
high / 1080p
3−4
5−6
ultra / 1080p
3−4
4−5
4K / 2160p
0−1
−
The average gaming FPS of Radeon R6 M340DX in The Witcher 3: Wild Hunt is 40% more, than GeForce GT 645M.
low / 768p
70−75
75−80
medium / 768p
35−40
30−35
ultra / 1080p
12−14
10−12
high / 768p
30−33
24−27
The average gaming FPS of GeForce GT 645M in World of Tanks is 5% more, than Radeon R6 M340DX.
Full Specs
GeForce GT 645M
Radeon R6 M340DX
Architecture
Kepler
GCN
Code name
N13P-GS
Jet
Type
Laptop
Laptop
Release date
22 March 2012
3 June 2015
Pipelines
384
704
Boost Clock
1030 MHz
Transistor count
1,270 million
690 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
22.7 billion/sec
24.72
Floating-point performance
544.5 gflops
Memory bus width
128bit
Memory clock speed
1800 MHz
Shared memory
-
-
DirectX
12 API
12 (11_1)
Shader Model
5.1
5.1
OpenGL
4.5
4.6
OpenCL
1.1
1.2
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
medium sized
Optimus
+
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