GeForce GT 645M vs Radeon HD 4870
When choosing between GeForce GT 645M and Radeon HD 4870, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 645M and Radeon HD 4870.
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
Radeon HD 4870
Power consumption (TDP)
32 Watt
150 Watt
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
Memory type
DDR3\GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Display Connectors
No outputs
2x DVI, 1x S-Video
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Radeon HD 4870 has 368% more power consumption, than GeForce GT 645M.
GeForce GT 645M is connected by PCIe 3.0 x16, and Radeon HD 4870 uses PCIe 2.0 x16 interface.
GeForce GT 645M has 1 GB more memory, than Radeon HD 4870.
GeForce GT 645M is used in Laptops, and Radeon HD 4870 - in Desktops.
GeForce GT 645M is build with Kepler architecture, and Radeon HD 4870 - with TeraScale.
GeForce GT 645M is manufactured by 28 nm process technology, and Radeon HD 4870 - by 55 nm process technology.
Memory clock speed of Radeon HD 4870 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
3−4
ultra / 1080p
0−1
1−2
QHD / 1440p
0−1
0−1
low / 720p
12−14
14−16
medium / 1080p
2−3
6−7
The average gaming FPS of Radeon HD 4870 in Assassin's Creed Odyssey is 60% more, than GeForce GT 645M.
high / 1080p
−
8−9
ultra / 1080p
3−4
6−7
QHD / 1440p
0−1
0−1
low / 720p
12−14
21−24
medium / 1080p
4−5
9−10
The average gaming FPS of Radeon HD 4870 in Battlefield 5 is 71% 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 HD 4870.
low / 768p
110−120
120−130
medium / 768p
85−90
100−110
ultra / 1080p
35−40
45−50
QHD / 1440p
−
24−27
4K / 2160p
10−11
−
high / 768p
60−65
75−80
The average gaming FPS of Radeon HD 4870 in Counter-Strike: Global Offensive is 17% more, than GeForce GT 645M.
low / 768p
70−75
70−75
ultra / 1080p
14−16
21−24
medium / 1080p
45−50
40−45
GeForce GT 645M and Radeon HD 4870 have the same average FPS in Cyberpunk 2077.
low / 768p
70−75
75−80
medium / 768p
45−50
55−60
ultra / 1080p
18−20
30−35
The average gaming FPS of Radeon HD 4870 in Dota 2 is 19% more, than GeForce GT 645M.
high / 1080p
2−3
4−5
ultra / 1080p
2−3
4−5
4K / 2160p
0−1
1−2
low / 720p
10−11
14−16
medium / 1080p
3−4
6−7
The average gaming FPS of Radeon HD 4870 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
60−65
medium / 1080p
8−9
18−20
The average gaming FPS of Radeon HD 4870 in Fortnite is 53% more, than GeForce GT 645M.
high / 1080p
3−4
7−8
ultra / 1080p
−
7−8
QHD / 1440p
0−1
0−1
low / 720p
14−16
21−24
medium / 1080p
6−7
10−11
The average gaming FPS of Radeon HD 4870 in Forza Horizon 4 is 62% more, than GeForce GT 645M.
low / 768p
40−45
50−55
high / 1080p
3−4
10−11
ultra / 1080p
2−3
4−5
QHD / 1440p
0−1
0−1
medium / 720p
35−40
40−45
The average gaming FPS of Radeon HD 4870 in Grand Theft Auto V is 28% 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
9−10
medium / 1080p
2−3
4−5
The average gaming FPS of Radeon HD 4870 in Metro Exodus is 150% more, than GeForce GT 645M.
low / 768p
85−90
85−90
high / 1080p
55−60
70−75
The average gaming FPS of Radeon HD 4870 in Minecraft is 11% more, than GeForce GT 645M.
high / 1080p
14−16
−
ultra / 1080p
12−14
12−14
low / 720p
24−27
30−35
medium / 1080p
14−16
14−16
The average gaming FPS of Radeon HD 4870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 17% more, than GeForce GT 645M.
high / 1080p
−
7−8
ultra / 1080p
3−4
4−5
QHD / 1440p
0−1
0−1
low / 720p
4−5
8−9
medium / 1080p
−
8−9
The average gaming FPS of Radeon HD 4870 in Red Dead Redemption 2 is 50% more, than GeForce GT 645M.
low / 768p
8−9
18−20
medium / 768p
7−8
12−14
high / 1080p
3−4
7−8
ultra / 1080p
3−4
5−6
4K / 2160p
0−1
1−2
The average gaming FPS of Radeon HD 4870 in The Witcher 3: Wild Hunt is 120% more, than GeForce GT 645M.
low / 768p
70−75
75−80
medium / 768p
35−40
40−45
ultra / 1080p
12−14
18−20
high / 768p
30−33
30−35
The average gaming FPS of Radeon HD 4870 in World of Tanks is 10% more, than GeForce GT 645M.
Full Specs
GeForce GT 645M
Radeon HD 4870
Architecture
Kepler
TeraScale
Code name
N13P-GS
RV770
Type
Laptop
Desktop
Release date
22 March 2012
25 June 2008
Pipelines
384
800
Core clock speed
750 MHz
Transistor count
1,270 million
956 million
Manufacturing process technology
28 nm
55 nm
Texture fill rate
22.7 billion/sec
30.00
Floating-point performance
544.5 gflops
1,200.0 gflops
Length
250 mm
Memory bus width
128bit
256 Bit
Memory clock speed
1800 MHz
3600 MHz
Memory bandwidth
115.2 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
Optimus
+
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