GeForce GT 645M vs GeForce GTX 580M SLI
Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and GeForce GTX 580M SLI. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GT 645M and GeForce GTX 580M SLI. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
GeForce GT 645M and GeForce GTX 580M SLI are Laptop Graphics Cards
Note: GeForce GT 645M and GeForce GTX 580M SLI 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 GeForce GTX 580M SLI here:
Main Specs
GeForce GT 645M
GeForce GTX 580M SLI
Power consumption (TDP)
32 Watt
100 Watt
Interface
PCIe 3.0 x16
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
Display Connectors
No outputs
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GeForce GTX 580M SLI has 212% more power consumption, than GeForce GT 645M.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and GeForce GTX 580M SLI - with Fermi.
GeForce GT 645M is manufactured by 28 nm process technology, and GeForce GTX 580M SLI - by 40 nm process technology.
Memory clock speed of GeForce GT 645M is 300 MHz higher, than GeForce GTX 580M SLI.
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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI 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 GeForce GTX 580M SLI in World of Tanks is 71% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
GeForce GTX 580M SLI
Architecture
Kepler
Fermi
Code name
N13P-GS
N12E-GTX2
Type
Laptop
Laptop
Release date
22 March 2012
6 January 2011
Pipelines
384
768
Core clock speed
620 MHz
Transistor count
1,270 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
22.7 billion/sec
Floating-point performance
544.5 gflops
Memory bus width
128bit
256 Bit
Memory clock speed
1800 MHz
1500 MHz
Shared memory
-
-
DirectX
12 API
DirectX 11, Shader 5.0
Shader Model
5.1
OpenGL
4.5
OpenCL
1.1
Vulkan
1.1.126
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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