GeForce 945M vs GeForce GT 645M
In this comparison between GeForce 945M and GeForce GT 645M 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 945M will be the best choice, for others GeForce GT 645M will be their preference. Study the comparison tables below and make your choice.
GeForce 945M and GeForce GT 645M are Laptop Graphics Cards
Note: GeForce 945M and GeForce GT 645M 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 945M or GeForce GT 645M here:
Main Specs
GeForce 945M
GeForce GT 645M
Power consumption (TDP)
75 Watt
32 Watt
Interface
MXM-B (3.0)
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
DDR3\GDDR5
Maximum RAM amount
4 GB
2 GB
Display Connectors
No outputs
No outputs
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GeForce 945M has 134% more power consumption, than GeForce GT 645M.
GeForce 945M is connected by MXM-B (3.0), and GeForce GT 645M uses PCIe 3.0 x16 interface.
GeForce 945M has 2 GB more memory, than GeForce GT 645M.
Both cards are used in Laptops.
GeForce 945M is build with Maxwell architecture, and GeForce GT 645M - with Kepler.
GeForce 945M and GeForce GT 645M are manufactured by 28 nm process technology.
Memory clock speed of GeForce 945M is 200 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
10−11
1−2
ultra / 1080p
6−7
0−1
QHD / 1440p
1−2
0−1
low / 720p
24−27
12−14
medium / 1080p
12−14
2−3
The average gaming FPS of GeForce 945M in Assassin's Creed Odyssey is 220% more, than GeForce GT 645M.
high / 1080p
16−18
−
ultra / 1080p
14−16
3−4
QHD / 1440p
1−2
0−1
low / 720p
35−40
12−14
medium / 1080p
18−20
4−5
The average gaming FPS of GeForce 945M in Battlefield 5 is 228% more, than GeForce GT 645M.
low / 768p
45−50
50−55
high / 1080p
−
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 645M in Call of Duty: Warzone is 10% more, than GeForce 945M.
low / 768p
170−180
110−120
medium / 768p
140−150
85−90
ultra / 1080p
75−80
35−40
QHD / 1440p
40−45
−
4K / 2160p
30−33
10−11
high / 768p
110−120
60−65
The average gaming FPS of GeForce 945M in Counter-Strike: Global Offensive is 74% more, than GeForce GT 645M.
low / 768p
55−60
70−75
ultra / 1080p
27−30
14−16
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 2% more, than GeForce 945M.
low / 768p
95−100
70−75
medium / 768p
75−80
45−50
ultra / 1080p
45−50
18−20
The average gaming FPS of GeForce 945M in Dota 2 is 60% more, than GeForce GT 645M.
high / 1080p
12−14
2−3
ultra / 1080p
12−14
2−3
4K / 2160p
5−6
0−1
low / 720p
27−30
10−11
medium / 1080p
12−14
3−4
The average gaming FPS of GeForce 945M in Far Cry 5 is 300% more, than GeForce GT 645M.
high / 1080p
18−20
−
ultra / 1080p
14−16
5−6
QHD / 1440p
−
1−2
low / 720p
80−85
45−50
medium / 1080p
35−40
8−9
The average gaming FPS of GeForce 945M in Fortnite is 125% more, than GeForce GT 645M.
high / 1080p
18−20
3−4
ultra / 1080p
14−16
−
QHD / 1440p
5−6
0−1
low / 720p
35−40
14−16
medium / 1080p
21−24
6−7
The average gaming FPS of GeForce 945M in Forza Horizon 4 is 225% more, than GeForce GT 645M.
low / 768p
65−70
40−45
medium / 768p
60−65
−
high / 1080p
21−24
3−4
ultra / 1080p
9−10
2−3
QHD / 1440p
0−1
0−1
medium / 720p
−
35−40
The average gaming FPS of GeForce 945M in Grand Theft Auto V is 106% more, than GeForce GT 645M.
high / 1080p
7−8
1−2
ultra / 1080p
5−6
0−1
4K / 2160p
1−2
0−1
low / 720p
20−22
3−4
medium / 1080p
9−10
2−3
The average gaming FPS of GeForce 945M in Metro Exodus is 500% more, than GeForce GT 645M.
low / 768p
100−110
85−90
high / 1080p
−
55−60
ultra / 1080p
90−95
−
medium / 1080p
100−105
−
The average gaming FPS of GeForce 945M in Minecraft is 20% more, than GeForce GT 645M.
high / 1080p
18−20
14−16
ultra / 1080p
16−18
12−14
low / 720p
45−50
24−27
medium / 1080p
21−24
14−16
The average gaming FPS of GeForce 945M in PLAYERUNKNOWN'S BATTLEGROUNDS is 52% more, than GeForce GT 645M.
high / 1080p
12−14
−
ultra / 1080p
8−9
3−4
QHD / 1440p
0−1
0−1
low / 720p
20−22
4−5
medium / 1080p
12−14
−
The average gaming FPS of GeForce 945M in Red Dead Redemption 2 is 250% more, than GeForce GT 645M.
low / 768p
35−40
8−9
medium / 768p
24−27
7−8
high / 1080p
14−16
3−4
ultra / 1080p
8−9
3−4
4K / 2160p
7−8
0−1
The average gaming FPS of GeForce 945M in The Witcher 3: Wild Hunt is 320% more, than GeForce GT 645M.
low / 768p
95−100
70−75
medium / 768p
55−60
35−40
ultra / 1080p
27−30
12−14
high / 768p
45−50
30−33
The average gaming FPS of GeForce 945M in World of Tanks is 50% more, than GeForce GT 645M.
Full Specs
GeForce 945M
GeForce GT 645M
Architecture
Maxwell
Kepler
Code name
GM107
N13P-GS
Type
Laptop
Laptop
Release date
12 March 2015
22 March 2012
Pipelines
512
384
Core clock speed
928 MHz
Boost Clock
1045 MHz
Transistor count
1,870 million
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
40.80
22.7 billion/sec
Floating-point performance
953.9 gflops
544.5 gflops
Memory bus width
128 Bit
128bit
Memory clock speed
2000 MHz
1800 MHz
Memory bandwidth
28.8 GB/s
Shared memory
-
-
DirectX
12 (11_0)
12 API
Shader Model
5.1
5.1
OpenGL
4.5
4.5
OpenCL
1.2
1.1
Vulkan
1.1.126
1.1.126
CUDA
+
+
CUDA cores
384
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
3D Blu-Ray
+
Bitcoin / BTC (SHA256)
107 Mh/s
19 Mh/s
Laptop size
medium sized
medium sized
Optimus
+
+
GPU Boost
2.0
GameWorks
+
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