GeForce GT 640M LE vs Radeon R8 M445DX
If you are going to buy a new graphics card and are choosing between GeForce GT 640M LE and Radeon R8 M445DX, 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 640M LE stacks up against Radeon R8 M445DX, check out specs charts below.
GeForce GT 640M LE and Radeon R8 M445DX are Laptop Graphics Cards
Note: GeForce GT 640M LE and Radeon R8 M445DX 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 640M LE or Radeon R8 M445DX here:
Main Specs
GeForce GT 640M LE
Radeon R8 M445DX
Power consumption (TDP)
20 Watt
Interface
PCIe 2.0 x16
IGP
Memory type
DDR3\DDR5
DDR4/DDR3
Maximum RAM amount
2 GB
Display Connectors
No outputs
No outputs
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GeForce GT 640M LE is connected by PCIe 2.0 x16, and Radeon R8 M445DX uses IGP interface.
Both cards are used in Laptops.
GeForce GT 640M LE is build with Fermi / Kepler architecture, and Radeon R8 M445DX - with GCN.
GeForce GT 640M LE and Radeon R8 M445DX are manufactured by 28 nm process technology.
Memory clock speed of GeForce GT 640M LE is 867 MHz higher, than Radeon R8 M445DX.
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
0−1
0−1
QHD / 1440p
0−1
0−1
low / 720p
1−2
1−2
medium / 1080p
0−1
0−1
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in Assassin's Creed Odyssey.
QHD / 1440p
0−1
0−1
low / 720p
0−1
0−1
low / 768p
50−55
50−55
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in Call of Duty: Warzone.
low / 768p
60−65
60−65
medium / 768p
27−30
27−30
ultra / 1080p
7−8
7−8
high / 768p
16−18
16−18
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in Counter-Strike: Global Offensive.
low / 768p
70−75
70−75
ultra / 1080p
0−1
0−1
medium / 1080p
45−50
45−50
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in Cyberpunk 2077.
low / 768p
45−50
45−50
medium / 768p
10−11
10−11
ultra / 1080p
0−1
0−1
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in Dota 2.
low / 720p
0−1
0−1
low / 720p
21−24
21−24
medium / 1080p
0−1
0−1
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in Fortnite.
high / 1080p
0−1
0−1
QHD / 1440p
0−1
0−1
low / 720p
0−1
0−1
medium / 1080p
0−1
0−1
low / 768p
18−20
18−20
high / 1080p
0−1
0−1
QHD / 1440p
0−1
0−1
medium / 720p
12−14
12−14
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in Grand Theft Auto V.
low / 720p
0−1
0−1
low / 768p
75−80
75−80
high / 1080p
27−30
27−30
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in Minecraft.
low / 720p
8−9
8−9
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
low / 720p
0−1
0−1
low / 768p
0−1
0−1
low / 768p
45−50
45−50
medium / 768p
14−16
14−16
ultra / 1080p
0−1
0−1
high / 768p
12−14
12−14
GeForce GT 640M LE and Radeon R8 M445DX have the same average FPS in World of Tanks.
Full Specs
GeForce GT 640M LE
Radeon R8 M445DX
Architecture
Fermi / Kepler
GCN
Code name
N13P-LP
Meso
Type
Laptop
Laptop
Release date
22 March 2012
1 June 2016
Pipelines
384
704
Core clock speed
720 / 1020 MHz
Boost Clock
1021 MHz
Transistor count
585 million
1,550 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
20.42
Floating-point performance
384.0 gflops
Memory bus width
128bit
128 + 64 Bit
Memory clock speed
1800 - 4000 MHz
933 / 1000 MHz
Shared memory
-
-
DirectX
12 API
12 (12_0)
Shader Model
5.1
6.0
OpenGL
4.5
4.6
OpenCL
1.1
2.0
Vulkan
N/A
1.2.131
CUDA
+
CUDA cores
Up to 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)
14 Mh/s
Laptop size
medium sized
medium sized
Optimus
+
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