GeForce GT 645M vs Radeon HD 7690M
In this comparison between GeForce GT 645M and Radeon HD 7690M 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 HD 7690M will be their preference. Study the comparison tables below and make your choice.
GeForce GT 645M and Radeon HD 7690M are Laptop Graphics Cards
Note: GeForce GT 645M and Radeon HD 7690M 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 HD 7690M here:
Main Specs
GeForce GT 645M
Radeon HD 7690M
Power consumption (TDP)
32 Watt
20 Watt
Interface
PCIe 3.0 x16
MXM-A (3.0)
Supplementary power connectors
None
Memory type
DDR3\GDDR5
GDDR5/DDR3
Maximum RAM amount
2 GB
1 GB
Display Connectors
No outputs
No outputs
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GeForce GT 645M has 60% more power consumption, than Radeon HD 7690M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon HD 7690M uses MXM-A (3.0) interface.
GeForce GT 645M has 1 GB more memory, than Radeon HD 7690M.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and Radeon HD 7690M - with Terascale 2.
GeForce GT 645M is manufactured by 28 nm process technology, and Radeon HD 7690M - by 40 nm process technology.
Memory clock speed of Radeon HD 7690M is 1800 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
2−3
ultra / 1080p
0−1
0−1
QHD / 1440p
0−1
0−1
low / 720p
12−14
12−14
medium / 1080p
2−3
4−5
The average gaming FPS of Radeon HD 7690M in Assassin's Creed Odyssey is 20% more, than GeForce GT 645M.
ultra / 1080p
3−4
5−6
QHD / 1440p
0−1
0−1
low / 720p
12−14
14−16
medium / 1080p
4−5
6−7
The average gaming FPS of Radeon HD 7690M in Battlefield 5 is 28% more, than GeForce GT 645M.
low / 768p
50−55
50−55
high / 1080p
45−50
40−45
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 645M in Call of Duty: Warzone is 6% more, than Radeon HD 7690M.
low / 768p
110−120
120−130
medium / 768p
85−90
90−95
ultra / 1080p
35−40
40−45
QHD / 1440p
−
21−24
4K / 2160p
10−11
16−18
high / 768p
60−65
65−70
The average gaming FPS of Radeon HD 7690M in Counter-Strike: Global Offensive is 9% more, than GeForce GT 645M.
low / 768p
70−75
65−70
ultra / 1080p
14−16
20−22
medium / 1080p
45−50
45−50
GeForce GT 645M and Radeon HD 7690M have the same average FPS in Cyberpunk 2077.
low / 768p
70−75
75−80
medium / 768p
45−50
45−50
ultra / 1080p
18−20
21−24
The average gaming FPS of Radeon HD 7690M in Dota 2 is 6% more, than GeForce GT 645M.
high / 1080p
2−3
2−3
ultra / 1080p
2−3
2−3
4K / 2160p
0−1
2−3
low / 720p
10−11
10−12
medium / 1080p
3−4
3−4
GeForce GT 645M and Radeon HD 7690M have the same average FPS in Far Cry 5.
high / 1080p
−
10−11
ultra / 1080p
5−6
5−6
QHD / 1440p
1−2
3−4
low / 720p
45−50
50−55
medium / 1080p
8−9
10−12
The average gaming FPS of Radeon HD 7690M in Fortnite is 20% more, than GeForce GT 645M.
high / 1080p
3−4
5−6
QHD / 1440p
0−1
3−4
4K / 2160p
−
2−3
low / 720p
14−16
18−20
medium / 1080p
6−7
8−9
The average gaming FPS of Radeon HD 7690M in Forza Horizon 4 is 37% more, than GeForce GT 645M.
low / 768p
40−45
45−50
high / 1080p
3−4
4−5
ultra / 1080p
2−3
2−3
QHD / 1440p
0−1
0−1
medium / 720p
35−40
35−40
The average gaming FPS of Radeon HD 7690M in Grand Theft Auto V is 9% more, than GeForce GT 645M.
high / 1080p
1−2
2−3
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
3−4
4−5
medium / 1080p
2−3
3−4
The average gaming FPS of Radeon HD 7690M in Metro Exodus is 50% more, than GeForce GT 645M.
low / 768p
85−90
90−95
high / 1080p
55−60
80−85
ultra / 1080p
−
70−75
medium / 1080p
−
85−90
The average gaming FPS of Radeon HD 7690M in Minecraft is 20% more, than GeForce GT 645M.
high / 1080p
14−16
−
ultra / 1080p
12−14
12−14
low / 720p
24−27
27−30
medium / 1080p
14−16
14−16
The average gaming FPS of Radeon HD 7690M in PLAYERUNKNOWN'S BATTLEGROUNDS is 5% more, than GeForce GT 645M.
ultra / 1080p
3−4
−
QHD / 1440p
0−1
−
low / 720p
4−5
6−7
The average gaming FPS of Radeon HD 7690M in Red Dead Redemption 2 is 50% more, than GeForce GT 645M.
low / 768p
8−9
10−11
medium / 768p
7−8
8−9
high / 1080p
3−4
4−5
ultra / 1080p
3−4
4−5
4K / 2160p
0−1
1−2
The average gaming FPS of Radeon HD 7690M in The Witcher 3: Wild Hunt is 40% more, than GeForce GT 645M.
low / 768p
70−75
70−75
medium / 768p
35−40
35−40
ultra / 1080p
12−14
14−16
high / 768p
30−33
30−35
The average gaming FPS of Radeon HD 7690M in World of Tanks is 2% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Radeon HD 7690M
Architecture
Kepler
Terascale 2
Code name
N13P-GS
Thames XT / XTX
Type
Laptop
Laptop
Release date
22 March 2012
7 June 2011
Pipelines
384
480
Core clock speed
600 MHz
Boost Clock
725 MHz
Transistor count
1,270 million
716 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
22.7 billion/sec
17.40
Floating-point performance
544.5 gflops
696.0 gflops
Memory bus width
128bit
128 Bit
Memory clock speed
1800 MHz
3600/1800 MHz
Memory bandwidth
28.8 GB/s
Shared memory
-
-
DirectX
12 API
11.2 (11_0)
Shader Model
5.1
5.0
OpenGL
4.5
4.4
OpenCL
1.1
1.2
Vulkan
1.1.126
N/A
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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