GeForce GT 645M vs GeForce GTX 770
Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and GeForce GTX 770. 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 770. 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 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 770
Power consumption (TDP)
32 Watt
230 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
One 8-pin and one 6-pin
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
2x DVI, 1x HDMI, 1x DisplayPort
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GeForce GTX 770 has 618% more power consumption, than GeForce GT 645M.
Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
GeForce GT 645M and GeForce GTX 770 have maximum RAM of 2 GB.
GeForce GT 645M is used in Laptops, and GeForce GTX 770 - in Desktops.
GeForce GT 645M and GeForce GTX 770 are build with Kepler architecture.
GeForce GT 645M and GeForce GTX 770 are manufactured by 28 nm process technology.
Memory clock speed of GeForce GTX 770 is 5212 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
35−40
ultra / 1080p
0−1
21−24
QHD / 1440p
0−1
16−18
4K / 2160p
−
10−11
low / 720p
12−14
60−65
medium / 1080p
2−3
40−45
The average gaming FPS of GeForce GTX 770 in Assassin's Creed Odyssey is 840% more, than GeForce GT 645M.
high / 1080p
−
55−60
ultra / 1080p
3−4
45−50
QHD / 1440p
0−1
35−40
4K / 2160p
−
18−20
low / 720p
12−14
100−110
medium / 1080p
4−5
60−65
The average gaming FPS of GeForce GTX 770 in Battlefield 5 is 914% 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 770 have the same average FPS in Call of Duty: Warzone.
low / 768p
110−120
250−260
medium / 768p
85−90
220−230
ultra / 1080p
35−40
180−190
QHD / 1440p
−
110−120
4K / 2160p
10−11
70−75
high / 768p
60−65
210−220
The average gaming FPS of GeForce GTX 770 in Counter-Strike: Global Offensive is 206% 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 770 have the same average FPS in Cyberpunk 2077.
low / 768p
70−75
120−130
medium / 768p
45−50
110−120
ultra / 1080p
18−20
100−110
The average gaming FPS of GeForce GTX 770 in Dota 2 is 150% more, than GeForce GT 645M.
high / 1080p
2−3
45−50
ultra / 1080p
2−3
40−45
QHD / 1440p
−
27−30
4K / 2160p
0−1
14−16
low / 720p
10−11
80−85
medium / 1080p
3−4
45−50
The average gaming FPS of GeForce GTX 770 in Far Cry 5 is 1275% more, than GeForce GT 645M.
high / 1080p
−
60−65
ultra / 1080p
5−6
45−50
QHD / 1440p
1−2
27−30
4K / 2160p
−
27−30
low / 720p
45−50
180−190
medium / 1080p
8−9
110−120
The average gaming FPS of GeForce GTX 770 in Fortnite is 526% more, than GeForce GT 645M.
high / 1080p
3−4
60−65
ultra / 1080p
−
45−50
QHD / 1440p
0−1
30−35
4K / 2160p
−
24−27
low / 720p
14−16
100−110
medium / 1080p
6−7
65−70
The average gaming FPS of GeForce GTX 770 in Forza Horizon 4 is 875% more, than GeForce GT 645M.
low / 768p
40−45
140−150
medium / 768p
−
120−130
high / 1080p
3−4
70−75
ultra / 1080p
2−3
30−35
QHD / 1440p
0−1
21−24
medium / 720p
35−40
−
The average gaming FPS of GeForce GTX 770 in Grand Theft Auto V is 418% more, than GeForce GT 645M.
high / 1080p
1−2
24−27
ultra / 1080p
0−1
20−22
QHD / 1440p
−
16−18
4K / 2160p
0−1
8−9
low / 720p
3−4
65−70
medium / 1080p
2−3
30−35
The average gaming FPS of GeForce GTX 770 in Metro Exodus is 1950% more, than GeForce GT 645M.
low / 768p
85−90
130−140
high / 1080p
55−60
−
medium / 1080p
−
120−130
The average gaming FPS of GeForce GTX 770 in Minecraft is 55% more, than GeForce GT 645M.
high / 1080p
14−16
−
ultra / 1080p
12−14
14−16
low / 720p
24−27
100−110
medium / 1080p
14−16
18−20
The average gaming FPS of GeForce GTX 770 in PLAYERUNKNOWN'S BATTLEGROUNDS is 170% more, than GeForce GT 645M.
high / 1080p
−
24−27
ultra / 1080p
3−4
16−18
QHD / 1440p
0−1
10−11
4K / 2160p
−
7−8
low / 720p
4−5
65−70
medium / 1080p
−
35−40
The average gaming FPS of GeForce GTX 770 in Red Dead Redemption 2 is 950% more, than GeForce GT 645M.
low / 768p
8−9
130−140
medium / 768p
7−8
85−90
high / 1080p
3−4
45−50
ultra / 1080p
3−4
24−27
4K / 2160p
0−1
16−18
The average gaming FPS of GeForce GTX 770 in The Witcher 3: Wild Hunt is 1360% more, than GeForce GT 645M.
low / 768p
70−75
90−95
medium / 768p
35−40
60−65
ultra / 1080p
12−14
50−55
high / 768p
30−33
60−65
The average gaming FPS of GeForce GTX 770 in World of Tanks is 76% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
GeForce GTX 770
Architecture
Kepler
Kepler
Code name
N13P-GS
GK104
Type
Laptop
Desktop
Release date
22 March 2012
30 May 2013
Pipelines
384
1536
Core clock speed
1046 MHz
Boost Clock
1085 MHz
Transistor count
1,270 million
3,540 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
22.7 billion/sec
134 billion/sec
Floating-point performance
544.5 gflops
3,333 gflops
Length
10.5" (26.7 cm)
Memory bus width
128bit
256 Bit
Memory clock speed
1800 MHz
7012 MHz
Memory bandwidth
224.3 GB/s
Shared memory
-
DirectX
12 API
12 (11_0)
Shader Model
5.1
5.1
OpenGL
4.5
4.3
OpenCL
1.1
1.2
Vulkan
1.1.126
1.1.126
CUDA
+
+
CUDA cores
384
1536
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 3.0
Height
4.376" (11.1 cm)
Multi monitor support
4 displays
HDMI
+
+
HDCP
+
+
Maximum VGA resolution
Up to 2048x1536
2048x1536
Audio input for HDMI
Internal
3D Blu-Ray
+
3D Gaming
+
3D Vision
+
3D Vision Live
+
Bitcoin / BTC (SHA256)
19 Mh/s
113 Mh/s
Laptop size
medium sized
Optimus
+
Ethereum / ETH (DaggerHashimoto)
3.9 Mh/s
Blu Ray 3D
+
Minimum recommended system power
600 Watt
PhysX
+
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