Radeon R9 M270X vs Radeon RX 640

If you are going to buy a new graphics card and are choosing between Radeon R9 M270X and Radeon RX 640, 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 Radeon R9 M270X stacks up against Radeon RX 640, check out specs charts below.

Radeon RX 640 is a Laptop Graphics Card

Note: Radeon RX 640 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 Radeon RX 640 here:

Main Specs

  Radeon R9 M270X Radeon RX 640
Power consumption (TDP) 50 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB 4 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 M270X is connected by PCIe 3.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
  • Radeon R9 M270X and Radeon RX 640 have maximum RAM of 4 GB.
  • Radeon R9 M270X is used in Desktops, and Radeon RX 640 - in Laptops.
  • Radeon R9 M270X is build with GCN 1.0 architecture, and Radeon RX 640 - with Polaris.
  • Core clock speed of Radeon RX 640 is 493 MHz higher, than Radeon R9 M270X.
  • Radeon R9 M270X is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
  • Memory clock speed of Radeon RX 640 is 4875 MHz higher, than Radeon R9 M270X.

Game benchmarks

high / 1080p 6−7 5−6
ultra / 1080p 4−5 3−4
QHD / 1440p 0−1 2−3
low / 720p 16−18 16−18
medium / 1080p 8−9 7−8
The average gaming FPS of Radeon R9 M270X in Assassin's Creed Odyssey is 12% more, than Radeon RX 640.

Full Specs

  Radeon R9 M270X Radeon RX 640
Architecture GCN 1.0 Polaris
Code name Venus Polaris 12
Type Desktop Laptop
Release date 21 March 2014 12 August 2019
Pipelines 640 640
Core clock speed 725 MHz 1218 MHz
Boost Clock 775 MHz 1218 MHz
Transistor count 1,500 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 31.00 38.98
Floating-point performance 1,536 gflops
Memory bus width 128 Bit 64 Bit
Memory clock speed 1125 MHz 6000 MHz
Memory bandwidth 72 GB/s 112.0 GB/s
Shared memory -
DirectX 12 (12_0)
Shader Model 5.1 6.4
OpenGL 4.4 4.6
OpenCL Not Listed 2.0
Vulkan 1.2.131
FreeSync + +
Bus support PCIe 3.0 x16
Laptop size large
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Compute units 10
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