GeForce GT 645M vs Radeon R5 Bristol Ridge
If you are going to buy a new graphics card and are choosing between GeForce GT 645M and Radeon R5 Bristol Ridge, 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 R5 Bristol Ridge, check out specs charts below.
GeForce GT 645M and Radeon R5 Bristol Ridge are Laptop Graphics Cards
Note: GeForce GT 645M and Radeon R5 Bristol Ridge 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 R5 Bristol Ridge here:
Main Specs
GeForce GT 645M
Radeon R5 Bristol Ridge
Power consumption (TDP)
32 Watt
12-45 Watt
Interface
PCIe 3.0 x16
Memory type
DDR3\GDDR5
Maximum RAM amount
2 GB
Display Connectors
No outputs
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GeForce GT 645M has 166% more power consumption, than Radeon R5 Bristol Ridge.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and Radeon R5 Bristol Ridge - with GCN 1.2/2.0.
GeForce GT 645M and Radeon R5 Bristol Ridge are manufactured by 28 nm process technology.
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
3−4
ultra / 1080p
0−1
1−2
QHD / 1440p
0−1
0−1
low / 720p
12−14
14−16
medium / 1080p
2−3
5−6
The average gaming FPS of Radeon R5 Bristol Ridge in Assassin's Creed Odyssey is 60% more, than GeForce GT 645M.
high / 1080p
−
7−8
ultra / 1080p
3−4
5−6
QHD / 1440p
0−1
0−1
low / 720p
12−14
18−20
medium / 1080p
4−5
8−9
The average gaming FPS of Radeon R5 Bristol Ridge in Battlefield 5 is 57% more, than GeForce GT 645M.
low / 768p
50−55
45−50
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 11% more, than Radeon R5 Bristol Ridge.
low / 768p
110−120
120−130
medium / 768p
85−90
95−100
ultra / 1080p
35−40
45−50
QHD / 1440p
−
24−27
4K / 2160p
10−11
−
high / 768p
60−65
70−75
The average gaming FPS of Radeon R5 Bristol Ridge in Counter-Strike: Global Offensive is 13% more, than GeForce GT 645M.
low / 768p
70−75
70−75
ultra / 1080p
14−16
20−22
medium / 1080p
45−50
40−45
GeForce GT 645M and Radeon R5 Bristol Ridge have the same average FPS in Cyberpunk 2077.
low / 768p
70−75
75−80
medium / 768p
45−50
55−60
ultra / 1080p
18−20
27−30
The average gaming FPS of Radeon R5 Bristol Ridge in Dota 2 is 17% more, than GeForce GT 645M.
high / 1080p
2−3
4−5
ultra / 1080p
2−3
3−4
4K / 2160p
0−1
0−1
low / 720p
10−11
14−16
medium / 1080p
3−4
5−6
The average gaming FPS of Radeon R5 Bristol Ridge in Far Cry 5 is 75% more, than GeForce GT 645M.
high / 1080p
−
12−14
ultra / 1080p
5−6
7−8
QHD / 1440p
1−2
4−5
low / 720p
45−50
55−60
medium / 1080p
8−9
14−16
The average gaming FPS of Radeon R5 Bristol Ridge in Fortnite is 40% more, than GeForce GT 645M.
high / 1080p
3−4
6−7
ultra / 1080p
−
6−7
QHD / 1440p
0−1
0−1
low / 720p
14−16
21−24
medium / 1080p
6−7
9−10
The average gaming FPS of Radeon R5 Bristol Ridge in Forza Horizon 4 is 50% more, than GeForce GT 645M.
low / 768p
40−45
45−50
high / 1080p
3−4
8−9
ultra / 1080p
2−3
3−4
QHD / 1440p
0−1
0−1
medium / 720p
35−40
40−45
The average gaming FPS of Radeon R5 Bristol Ridge in Grand Theft Auto V is 19% 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
7−8
medium / 1080p
2−3
3−4
The average gaming FPS of Radeon R5 Bristol Ridge in Metro Exodus is 100% more, than GeForce GT 645M.
low / 768p
85−90
85−90
high / 1080p
55−60
65−70
The average gaming FPS of Radeon R5 Bristol Ridge in Minecraft is 6% 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 R5 Bristol Ridge in PLAYERUNKNOWN'S BATTLEGROUNDS is 5% more, than GeForce GT 645M.
high / 1080p
−
6−7
ultra / 1080p
3−4
4−5
QHD / 1440p
0−1
0−1
low / 720p
4−5
7−8
The average gaming FPS of Radeon R5 Bristol Ridge in Red Dead Redemption 2 is 50% more, than GeForce GT 645M.
low / 768p
8−9
16−18
medium / 768p
7−8
12−14
high / 1080p
3−4
6−7
ultra / 1080p
3−4
4−5
4K / 2160p
0−1
1−2
The average gaming FPS of Radeon R5 Bristol Ridge in The Witcher 3: Wild Hunt is 100% more, than GeForce GT 645M.
low / 768p
70−75
70−75
medium / 768p
35−40
35−40
ultra / 1080p
12−14
16−18
high / 768p
30−33
30−35
The average gaming FPS of Radeon R5 Bristol Ridge in World of Tanks is 2% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Radeon R5 Bristol Ridge
Architecture
Kepler
GCN 1.2/2.0
Code name
N13P-GS
Bristol Ridge
Type
Laptop
Laptop
Release date
22 March 2012
1 June 2016
Pipelines
384
384
Boost Clock
800 MHz
Transistor count
1,270 million
3100 Million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
22.7 billion/sec
Floating-point performance
544.5 gflops
Memory bus width
128bit
64/128 Bit
Memory clock speed
1800 MHz
Shared memory
-
+
DirectX
12 API
DirectX 12 (FL 12_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
medium sized
Optimus
+
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