GeForce GT 645M vs Radeon HD 7690M XT
If you are going to buy a new graphics card and are choosing between GeForce GT 645M and Radeon HD 7690M XT, 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 Radeon HD 7690M XT, check out specs charts below.
GeForce GT 645M and Radeon HD 7690M XT are Laptop Graphics Cards
Note: GeForce GT 645M and Radeon HD 7690M XT 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 XT here:
Main Specs
GeForce GT 645M
Radeon HD 7690M XT
Power consumption (TDP)
32 Watt
25 Watt
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
No outputs
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GeForce GT 645M has 28% more power consumption, than Radeon HD 7690M XT.
GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon HD 7690M XT uses PCIe 2.0 x16 interface.
GeForce GT 645M and Radeon HD 7690M XT have maximum RAM of 2 GB.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and Radeon HD 7690M XT - with Terascale 2.
GeForce GT 645M is manufactured by 28 nm process technology, and Radeon HD 7690M XT - by 40 nm process technology.
Memory clock speed of Radeon HD 7690M XT 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
1−2
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 XT 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
16−18
medium / 1080p
4−5
6−7
The average gaming FPS of Radeon HD 7690M XT 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 XT.
low / 768p
110−120
120−130
medium / 768p
85−90
95−100
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 XT in Counter-Strike: Global Offensive is 11% 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 XT 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 XT 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
4−5
The average gaming FPS of Radeon HD 7690M XT in Far Cry 5 is 25% more, than GeForce GT 645M.
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 XT 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 XT 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 XT 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 XT 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 XT 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 XT 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 XT 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 XT 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 XT in World of Tanks is 2% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Radeon HD 7690M XT
Architecture
Kepler
Terascale 2
Code name
N13P-GS
Thames XTX
Type
Laptop
Laptop
Release date
22 March 2012
7 June 2011
Pipelines
384
480
Core clock speed
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 MHz
Memory bandwidth
57.6 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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