GeForce GT 645M vs Mobility Radeon HD 4870
Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 645M and Mobility Radeon HD 4870. 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 Mobility Radeon HD 4870. 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 Mobility Radeon HD 4870 are Laptop Graphics Cards
Note: GeForce GT 645M and Mobility Radeon HD 4870 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 Mobility Radeon HD 4870 here:
Main Specs
GeForce GT 645M
Mobility Radeon HD 4870
Power consumption (TDP)
32 Watt
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Display Connectors
No outputs
No outputs
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GeForce GT 645M is connected by PCIe 3.0 x16, and Mobility Radeon HD 4870 uses PCIe 2.0 x16 interface.
GeForce GT 645M has 1 GB more memory, than Mobility Radeon HD 4870.
Both cards are used in Laptops.
GeForce GT 645M is build with Kepler architecture, and Mobility Radeon HD 4870 - with Terascale 1.
GeForce GT 645M is manufactured by 28 nm process technology, and Mobility Radeon HD 4870 - by 55 nm process technology.
Memory clock speed of GeForce GT 645M is 912 MHz higher, than Mobility Radeon HD 4870.
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
7−8
ultra / 1080p
0−1
4−5
QHD / 1440p
0−1
0−1
low / 720p
12−14
16−18
medium / 1080p
2−3
8−9
The average gaming FPS of Mobility Radeon HD 4870 in Assassin's Creed Odyssey is 120% more, than GeForce GT 645M.
high / 1080p
−
12−14
ultra / 1080p
3−4
10−11
QHD / 1440p
0−1
0−1
low / 720p
12−14
24−27
medium / 1080p
4−5
12−14
The average gaming FPS of Mobility Radeon HD 4870 in Battlefield 5 is 128% more, than GeForce GT 645M.
low / 768p
50−55
45−50
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 645M in Call of Duty: Warzone is 6% more, than Mobility Radeon HD 4870.
low / 768p
110−120
140−150
medium / 768p
85−90
110−120
ultra / 1080p
35−40
55−60
QHD / 1440p
−
30−33
4K / 2160p
10−11
27−30
high / 768p
60−65
80−85
The average gaming FPS of Mobility Radeon HD 4870 in Counter-Strike: Global Offensive is 37% more, than GeForce GT 645M.
low / 768p
70−75
55−60
ultra / 1080p
14−16
20−22
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 7% more, than Mobility Radeon HD 4870.
low / 768p
70−75
80−85
medium / 768p
45−50
60−65
ultra / 1080p
18−20
35−40
The average gaming FPS of Mobility Radeon HD 4870 in Dota 2 is 30% more, than GeForce GT 645M.
high / 1080p
2−3
8−9
ultra / 1080p
2−3
8−9
4K / 2160p
0−1
3−4
low / 720p
10−11
18−20
medium / 1080p
3−4
9−10
The average gaming FPS of Mobility Radeon HD 4870 in Far Cry 5 is 175% more, than GeForce GT 645M.
high / 1080p
−
14−16
ultra / 1080p
5−6
10−11
QHD / 1440p
1−2
−
low / 720p
45−50
60−65
medium / 1080p
8−9
24−27
The average gaming FPS of Mobility Radeon HD 4870 in Fortnite is 60% more, than GeForce GT 645M.
high / 1080p
3−4
12−14
ultra / 1080p
−
10−12
QHD / 1440p
0−1
1−2
low / 720p
14−16
27−30
medium / 1080p
6−7
14−16
The average gaming FPS of Mobility Radeon HD 4870 in Forza Horizon 4 is 125% more, than GeForce GT 645M.
low / 768p
40−45
50−55
medium / 768p
−
45−50
high / 1080p
3−4
12−14
ultra / 1080p
2−3
6−7
QHD / 1440p
0−1
0−1
medium / 720p
35−40
−
The average gaming FPS of Mobility Radeon HD 4870 in Grand Theft Auto V is 50% more, than GeForce GT 645M.
high / 1080p
1−2
5−6
ultra / 1080p
0−1
3−4
4K / 2160p
0−1
0−1
low / 720p
3−4
12−14
medium / 1080p
2−3
6−7
The average gaming FPS of Mobility Radeon HD 4870 in Metro Exodus is 300% more, than GeForce GT 645M.
low / 768p
85−90
95−100
high / 1080p
55−60
90−95
ultra / 1080p
−
80−85
medium / 1080p
−
90−95
The average gaming FPS of Mobility Radeon HD 4870 in Minecraft is 31% more, than GeForce GT 645M.
high / 1080p
14−16
16−18
ultra / 1080p
12−14
14−16
low / 720p
24−27
30−35
medium / 1080p
14−16
18−20
The average gaming FPS of Mobility Radeon HD 4870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 17% more, than GeForce GT 645M.
ultra / 1080p
3−4
7−8
QHD / 1440p
0−1
0−1
low / 720p
4−5
12−14
medium / 1080p
−
10−12
The average gaming FPS of Mobility Radeon HD 4870 in Red Dead Redemption 2 is 150% more, than GeForce GT 645M.
low / 768p
8−9
24−27
medium / 768p
7−8
16−18
high / 1080p
3−4
9−10
ultra / 1080p
3−4
6−7
4K / 2160p
0−1
6−7
The average gaming FPS of Mobility Radeon HD 4870 in The Witcher 3: Wild Hunt is 180% more, than GeForce GT 645M.
low / 768p
70−75
85−90
medium / 768p
35−40
45−50
ultra / 1080p
12−14
20−22
high / 768p
30−33
35−40
The average gaming FPS of Mobility Radeon HD 4870 in World of Tanks is 26% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Mobility Radeon HD 4870
Architecture
Kepler
Terascale 1
Code name
N13P-GS
M98-XT
Type
Laptop
Laptop
Release date
22 March 2012
9 January 2009
Pipelines
384
800
Core clock speed
550 MHz
Transistor count
1,270 million
956 million
Manufacturing process technology
28 nm
55 nm
Texture fill rate
22.7 billion/sec
22.00
Floating-point performance
544.5 gflops
880.0 gflops
Memory bus width
128bit
256 Bit
Memory clock speed
1800 MHz
888 MHz
Memory bandwidth
56.83 GB/s
Shared memory
-
-
DirectX
12 API
10.1 (10_1)
Shader Model
5.1
4.1
OpenGL
4.5
3.3
OpenCL
1.1
1.1
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
large
Optimus
+
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