GeForce GT 640 vs Radeon R7 512 Cores Kaveri
If you are going to buy a new graphics card and are choosing between GeForce GT 640 and Radeon R7 512 Cores Kaveri, 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 640 stacks up against Radeon R7 512 Cores Kaveri, check out specs charts below.
Radeon R7 512 Cores Kaveri
Main Specs
GeForce GT 640
Radeon R7 512 Cores Kaveri
Power consumption (TDP)
65 Watt
Interface
PCIe 3.0 x16
Supplementary power connectors
None
Memory type
DDR3
Maximum RAM amount
2 GB
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
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Both cards are used in Desktops.
GeForce GT 640 is build with Kepler architecture, and Radeon R7 512 Cores Kaveri - with GCN.
Core clock speed of GeForce GT 640 is 182 MHz higher, than Radeon R7 512 Cores Kaveri.
GeForce GT 640 and Radeon R7 512 Cores Kaveri 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
2−3
7−8
ultra / 1080p
1−2
4−5
QHD / 1440p
0−1
0−1
low / 720p
14−16
18−20
medium / 1080p
5−6
9−10
The average gaming FPS of Radeon R7 512 Cores Kaveri in Assassin's Creed Odyssey is 66% more, than GeForce GT 640.
high / 1080p
7−8
12−14
ultra / 1080p
5−6
10−12
QHD / 1440p
0−1
0−1
low / 720p
20−22
27−30
medium / 1080p
7−8
14−16
The average gaming FPS of Radeon R7 512 Cores Kaveri in Battlefield 5 is 60% more, than GeForce GT 640.
low / 768p
50−55
45−50
high / 1080p
35−40
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon R7 512 Cores Kaveri in Call of Duty: Warzone is 4% more, than GeForce GT 640.
low / 768p
110−120
140−150
medium / 768p
90−95
110−120
ultra / 1080p
45−50
55−60
QHD / 1440p
24−27
30−35
4K / 2160p
18−20
27−30
high / 768p
65−70
85−90
The average gaming FPS of Radeon R7 512 Cores Kaveri in Counter-Strike: Global Offensive is 26% more, than GeForce GT 640.
low / 768p
70−75
55−60
ultra / 1080p
21−24
21−24
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 640 in Cyberpunk 2077 is 11% more, than Radeon R7 512 Cores Kaveri.
low / 768p
70−75
85−90
medium / 768p
50−55
60−65
ultra / 1080p
27−30
35−40
The average gaming FPS of Radeon R7 512 Cores Kaveri in Dota 2 is 21% more, than GeForce GT 640.
high / 1080p
3−4
9−10
ultra / 1080p
3−4
8−9
4K / 2160p
2−3
4−5
low / 720p
14−16
21−24
medium / 1080p
4−5
10−11
The average gaming FPS of Radeon R7 512 Cores Kaveri in Far Cry 5 is 120% more, than GeForce GT 640.
high / 1080p
10−12
16−18
ultra / 1080p
5−6
10−12
QHD / 1440p
2−3
−
low / 720p
50−55
65−70
medium / 1080p
16−18
24−27
The average gaming FPS of Radeon R7 512 Cores Kaveri in Fortnite is 42% more, than GeForce GT 640.
high / 1080p
6−7
14−16
ultra / 1080p
−
12−14
QHD / 1440p
4−5
2−3
4K / 2160p
2−3
−
low / 720p
21−24
27−30
medium / 1080p
9−10
14−16
The average gaming FPS of Radeon R7 512 Cores Kaveri in Forza Horizon 4 is 50% more, than GeForce GT 640.
low / 768p
45−50
55−60
medium / 768p
−
50−55
high / 1080p
7−8
14−16
ultra / 1080p
3−4
7−8
QHD / 1440p
0−1
0−1
medium / 720p
40−45
−
The average gaming FPS of Radeon R7 512 Cores Kaveri in Grand Theft Auto V is 36% more, than GeForce GT 640.
high / 1080p
2−3
5−6
ultra / 1080p
0−1
3−4
4K / 2160p
0−1
0−1
low / 720p
8−9
14−16
medium / 1080p
4−5
7−8
The average gaming FPS of Radeon R7 512 Cores Kaveri in Metro Exodus is 80% more, than GeForce GT 640.
low / 768p
80−85
95−100
high / 1080p
−
90−95
ultra / 1080p
70−75
80−85
medium / 1080p
−
95−100
The average gaming FPS of Radeon R7 512 Cores Kaveri in Minecraft is 16% more, than GeForce GT 640.
high / 1080p
−
16−18
ultra / 1080p
12−14
14−16
low / 720p
27−30
35−40
medium / 1080p
14−16
18−20
The average gaming FPS of Radeon R7 512 Cores Kaveri in PLAYERUNKNOWN'S BATTLEGROUNDS is 27% more, than GeForce GT 640.
high / 1080p
6−7
−
ultra / 1080p
4−5
8−9
QHD / 1440p
0−1
0−1
low / 720p
7−8
14−16
medium / 1080p
−
10−12
The average gaming FPS of Radeon R7 512 Cores Kaveri in Red Dead Redemption 2 is 83% more, than GeForce GT 640.
low / 768p
14−16
27−30
medium / 768p
10−11
18−20
high / 1080p
5−6
10−11
ultra / 1080p
4−5
7−8
4K / 2160p
0−1
6−7
The average gaming FPS of Radeon R7 512 Cores Kaveri in The Witcher 3: Wild Hunt is 100% more, than GeForce GT 640.
low / 768p
70−75
85−90
medium / 768p
35−40
45−50
ultra / 1080p
16−18
21−24
high / 768p
30−35
35−40
The average gaming FPS of Radeon R7 512 Cores Kaveri in World of Tanks is 23% more, than GeForce GT 640.
Full Specs
GeForce GT 640
Radeon R7 512 Cores Kaveri
Architecture
Kepler
GCN
Code name
GK107
Kaveri Spectre
Type
Desktop
Desktop
Release date
5 June 2012
14 January 2014
Pipelines
384
512
Core clock speed
902 MHz
720 MHz
Transistor count
1,270 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
28.86
Floating-point performance
692.7 gflops
Length
145 mm
Memory bus width
128 Bit
Memory clock speed
1782 MHz
Memory bandwidth
28.51 GB/s
Shared memory
+
DirectX
12 (11_0)
DirectX 12 (FL 12_0), Shader 5.2
Shader Model
5.1
OpenGL
4.6
OpenCL
1.2
Vulkan
1.1.126
CUDA
3.0
Bitcoin / BTC (SHA256)
24 Mh/s
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