GeForce GT 645M vs GeForce GTX 550 Ti
If you are going to buy a new graphics card and are choosing between GeForce GT 645M and GeForce GTX 550 Ti, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 645M stacks up against GeForce GTX 550 Ti, check out specs charts below.
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:
Main Specs
GeForce GT 645M
GeForce GTX 550 Ti
Power consumption (TDP)
32 Watt
116 Watt
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
One 6-pin
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Display Connectors
No outputs
2x DVI, 1x mini-HDMI
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GeForce GTX 550 Ti has 262% more power consumption, than GeForce GT 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and GeForce GTX 550 Ti uses PCIe 2.0 x16 interface.
GeForce GT 645M has 1 GB more memory, than GeForce GTX 550 Ti.
GeForce GT 645M is used in Laptops, and GeForce GTX 550 Ti - in Desktops.
GeForce GT 645M is build with Kepler architecture, and GeForce GTX 550 Ti - with Fermi.
GeForce GT 645M is manufactured by 28 nm process technology, and GeForce GTX 550 Ti - by 40 nm process technology.
Memory clock speed of GeForce GT 645M is 1796 MHz higher, than GeForce GTX 550 Ti.
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
7−8
ultra / 1080p
0−1
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
18−20
medium / 1080p
2−3
9−10
The average gaming FPS of GeForce GTX 550 Ti in Assassin's Creed Odyssey is 140% more, than GeForce GT 645M.
high / 1080p
−
12−14
ultra / 1080p
3−4
10−12
QHD / 1440p
0−1
0−1
low / 720p
12−14
24−27
medium / 1080p
4−5
12−14
The average gaming FPS of GeForce GTX 550 Ti in Battlefield 5 is 128% 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 GeForce GTX 550 Ti.
low / 768p
110−120
140−150
medium / 768p
85−90
110−120
ultra / 1080p
35−40
55−60
QHD / 1440p
−
30−35
4K / 2160p
10−11
27−30
high / 768p
60−65
85−90
The average gaming FPS of GeForce GTX 550 Ti in Counter-Strike: Global Offensive is 38% more, than GeForce GT 645M.
low / 768p
70−75
55−60
ultra / 1080p
14−16
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 7% more, than GeForce GTX 550 Ti.
low / 768p
70−75
80−85
medium / 768p
45−50
60−65
ultra / 1080p
18−20
35−40
The average gaming FPS of GeForce GTX 550 Ti in Dota 2 is 30% more, than GeForce GT 645M.
high / 1080p
2−3
9−10
ultra / 1080p
2−3
8−9
4K / 2160p
0−1
4−5
low / 720p
10−11
20−22
medium / 1080p
3−4
9−10
The average gaming FPS of GeForce GTX 550 Ti in Far Cry 5 is 200% more, than GeForce GT 645M.
high / 1080p
−
16−18
ultra / 1080p
5−6
10−12
QHD / 1440p
1−2
−
low / 720p
45−50
60−65
medium / 1080p
8−9
24−27
The average gaming FPS of GeForce GTX 550 Ti in Fortnite is 65% more, than GeForce GT 645M.
high / 1080p
3−4
12−14
ultra / 1080p
−
10−12
QHD / 1440p
0−1
1−2
low / 720p
14−16
27−30
medium / 1080p
6−7
14−16
The average gaming FPS of GeForce GTX 550 Ti in Forza Horizon 4 is 125% more, than GeForce GT 645M.
low / 768p
40−45
55−60
medium / 768p
−
45−50
high / 1080p
3−4
12−14
ultra / 1080p
2−3
7−8
QHD / 1440p
0−1
0−1
medium / 720p
35−40
−
The average gaming FPS of GeForce GTX 550 Ti in Grand Theft Auto V is 62% more, than GeForce GT 645M.
high / 1080p
1−2
5−6
ultra / 1080p
0−1
3−4
4K / 2160p
0−1
0−1
low / 720p
3−4
12−14
medium / 1080p
2−3
7−8
The average gaming FPS of GeForce GTX 550 Ti in Metro Exodus is 300% more, than GeForce GT 645M.
low / 768p
85−90
95−100
high / 1080p
55−60
90−95
ultra / 1080p
−
80−85
medium / 1080p
−
90−95
The average gaming FPS of GeForce GTX 550 Ti in Minecraft is 31% more, than GeForce GT 645M.
high / 1080p
14−16
16−18
ultra / 1080p
12−14
14−16
low / 720p
24−27
30−35
medium / 1080p
14−16
18−20
The average gaming FPS of GeForce GTX 550 Ti in PLAYERUNKNOWN'S BATTLEGROUNDS is 17% more, than GeForce GT 645M.
ultra / 1080p
3−4
8−9
QHD / 1440p
0−1
0−1
low / 720p
4−5
12−14
medium / 1080p
−
10−12
The average gaming FPS of GeForce GTX 550 Ti in Red Dead Redemption 2 is 150% more, than GeForce GT 645M.
low / 768p
8−9
27−30
medium / 768p
7−8
18−20
high / 1080p
3−4
10−11
ultra / 1080p
3−4
6−7
4K / 2160p
0−1
6−7
The average gaming FPS of GeForce GTX 550 Ti in The Witcher 3: Wild Hunt is 220% more, than GeForce GT 645M.
low / 768p
70−75
85−90
medium / 768p
35−40
45−50
ultra / 1080p
12−14
20−22
high / 768p
30−33
35−40
The average gaming FPS of GeForce GTX 550 Ti in World of Tanks is 26% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
GeForce GTX 550 Ti
Architecture
Kepler
Fermi
Code name
N13P-GS
GF116
Type
Laptop
Desktop
Release date
22 March 2012
15 March 2011
Pipelines
384
192
Core clock speed
900 MHz
Transistor count
1,270 million
1,170 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
22.7 billion/sec
28.8 billion/sec
Floating-point performance
544.5 gflops
691.2 gflops
Length
8.25" (21 cm)
Memory bus width
128bit
192 Bit
Memory clock speed
1800 MHz
4.1 GB/s
Memory bandwidth
98.4 GB/s
Shared memory
-
DirectX
12 API
12 (11_0)
Shader Model
5.1
5.1
OpenGL
4.5
4.2
OpenCL
1.1
1.1
Vulkan
1.1.126
N/A
CUDA
+
+
CUDA cores
384
192
Bus support
PCI Express 2.0, PCI Express 3.0
16x PCI-E 2.0
Height
4.376" (11.1 cm)
SLI options
+
Multi monitor support
+
HDMI
+
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
2048x1536
Audio input for HDMI
Internal
3D Blu-Ray
+
Bitcoin / BTC (SHA256)
19 Mh/s
44 Mh/s
Laptop size
medium sized
Optimus
+
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