GeForce 830M vs GeForce GT 640
In this comparison between GeForce 830M and GeForce GT 640 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 830M will be the best choice, for others GeForce GT 640 will be their preference. Study the comparison tables below and make your choice.
GeForce 830M is a Laptop Graphics Card
Note: GeForce 830M 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 830M here:
Main Specs
GeForce 830M
GeForce GT 640
Power consumption (TDP)
33 Watt
65 Watt
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
DDR3
Maximum RAM amount
2 GB
2 GB
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
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GeForce GT 640 has 96% more power consumption, than GeForce 830M.
GeForce 830M is connected by PCIe 3.0 x8, and GeForce GT 640 uses PCIe 3.0 x16 interface.
GeForce 830M and GeForce GT 640 have maximum RAM of 2 GB.
GeForce 830M is used in Laptops, and GeForce GT 640 - in Desktops.
GeForce 830M is build with Maxwell architecture, and GeForce GT 640 - with Kepler.
Core clock speed of GeForce 830M is 127 MHz higher, than GeForce GT 640.
GeForce 830M and GeForce GT 640 are manufactured by 28 nm process technology.
Memory clock speed of GeForce 830M is 18 MHz higher, than GeForce GT 640.
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
2−3
2−3
ultra / 1080p
0−1
1−2
QHD / 1440p
0−1
0−1
low / 720p
12−14
14−16
medium / 1080p
3−4
5−6
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 16% more, than GeForce 830M.
high / 1080p
−
7−8
ultra / 1080p
5−6
5−6
QHD / 1440p
0−1
0−1
low / 720p
14−16
20−22
medium / 1080p
6−7
7−8
The average gaming FPS of GeForce GT 640 in Battlefield 5 is 22% more, than GeForce 830M.
low / 768p
50−55
50−55
high / 1080p
40−45
35−40
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce 830M in Call of Duty: Warzone is 4% more, than GeForce GT 640.
low / 768p
120−130
110−120
medium / 768p
90−95
90−95
ultra / 1080p
35−40
45−50
QHD / 1440p
21−24
24−27
4K / 2160p
16−18
18−20
high / 768p
65−70
65−70
The average gaming FPS of GeForce GT 640 in Counter-Strike: Global Offensive is 1% more, than GeForce 830M.
low / 768p
65−70
70−75
ultra / 1080p
18−20
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 6% more, than GeForce 830M.
low / 768p
75−80
70−75
medium / 768p
45−50
50−55
ultra / 1080p
20−22
27−30
The average gaming FPS of GeForce GT 640 in Dota 2 is 6% more, than GeForce 830M.
high / 1080p
2−3
3−4
ultra / 1080p
2−3
3−4
4K / 2160p
2−3
2−3
low / 720p
10−12
14−16
medium / 1080p
3−4
4−5
The average gaming FPS of GeForce GT 640 in Far Cry 5 is 25% more, than GeForce 830M.
high / 1080p
10−11
10−12
ultra / 1080p
5−6
5−6
QHD / 1440p
3−4
2−3
low / 720p
50−55
50−55
medium / 1080p
10−11
16−18
The average gaming FPS of GeForce GT 640 in Fortnite is 6% more, than GeForce 830M.
high / 1080p
5−6
6−7
QHD / 1440p
3−4
4−5
4K / 2160p
2−3
2−3
low / 720p
16−18
21−24
medium / 1080p
8−9
9−10
The average gaming FPS of GeForce GT 640 in Forza Horizon 4 is 28% more, than GeForce 830M.
low / 768p
45−50
45−50
high / 1080p
4−5
7−8
ultra / 1080p
2−3
3−4
QHD / 1440p
0−1
0−1
medium / 720p
35−40
40−45
The average gaming FPS of GeForce GT 640 in Grand Theft Auto V is 8% more, than GeForce 830M.
high / 1080p
1−2
2−3
ultra / 1080p
0−1
0−1
4K / 2160p
0−1
0−1
low / 720p
4−5
8−9
medium / 1080p
3−4
4−5
The average gaming FPS of GeForce GT 640 in Metro Exodus is 66% more, than GeForce 830M.
low / 768p
90−95
80−85
high / 1080p
80−85
−
ultra / 1080p
70−75
70−75
medium / 1080p
85−90
−
The average gaming FPS of GeForce 830M in Minecraft is 6% more, than GeForce GT 640.
ultra / 1080p
12−14
12−14
low / 720p
27−30
27−30
medium / 1080p
14−16
14−16
GeForce 830M and GeForce GT 640 have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
high / 1080p
−
6−7
ultra / 1080p
−
4−5
QHD / 1440p
−
0−1
low / 720p
6−7
7−8
The average gaming FPS of GeForce GT 640 in Red Dead Redemption 2 is 16% more, than GeForce 830M.
low / 768p
9−10
14−16
medium / 768p
8−9
10−11
high / 1080p
4−5
5−6
ultra / 1080p
3−4
4−5
4K / 2160p
1−2
0−1
The average gaming FPS of GeForce GT 640 in The Witcher 3: Wild Hunt is 33% more, than GeForce 830M.
low / 768p
70−75
70−75
medium / 768p
35−40
35−40
ultra / 1080p
14−16
16−18
high / 768p
30−35
30−35
GeForce 830M and GeForce GT 640 have the same average FPS in World of Tanks.
Full Specs
GeForce 830M
GeForce GT 640
Architecture
Maxwell
Kepler
Code name
N15?
GK107
Type
Laptop
Desktop
Release date
12 March 2014
5 June 2012
Pipelines
256
384
Core clock speed
1029 MHz
902 MHz
Boost Clock
1150 MHz
Transistor count
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
18.40
28.86
Floating-point performance
588.8 gflops
692.7 gflops
Length
145 mm
Memory bus width
64 Bit
128 Bit
Memory clock speed
1800 MHz
1782 MHz
Memory bandwidth
14.4 GB/s
28.51 GB/s
Shared memory
-
DirectX
12 (11_0)
12 (11_0)
Shader Model
5.1
5.1
OpenGL
4.5
4.6
OpenCL
1.2
1.2
Vulkan
1.1.126
1.1.126
CUDA
+
3.0
Bus support
PCI Express 2.0, PCI Express 3.0
Bitcoin / BTC (SHA256)
67 Mh/s
24 Mh/s
Optimus
+
GPU Boost
2.0
GameWorks
+
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