Radeon R9 380X vs Radeon RX 640

When choosing between Radeon R9 380X and Radeon RX 640, 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 Radeon R9 380X and Radeon RX 640.

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 380X Radeon RX 640
Power consumption (TDP) 190 Watt 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 2x DVI, 1x HDMI, 1x DisplayPort 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 380X has 280% more power consumption, than Radeon RX 640.
  • Radeon R9 380X is connected by PCIe 3.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
  • Radeon R9 380X and Radeon RX 640 have maximum RAM of 4 GB.
  • Radeon R9 380X is used in Desktops, and Radeon RX 640 - in Laptops.
  • Radeon R9 380X is build with GCN 3.0 architecture, and Radeon RX 640 - with Polaris.
  • Radeon R9 380X is manufactured by 28 nm process technology, and Radeon RX 640 - by 14 nm process technology.
  • Memory clock speed of Radeon RX 640 is 5030 MHz higher, than Radeon R9 380X.

Game benchmarks

high / 1080p 35−40 5−6
ultra / 1080p 21−24 3−4
QHD / 1440p 16−18 2−3
4K / 2160p 10−11
low / 720p 60−65 16−18
medium / 1080p 40−45 7−8
The average gaming FPS of Radeon R9 380X in Assassin's Creed Odyssey is 414% more, than Radeon RX 640.

Full Specs

  Radeon R9 380X Radeon RX 640
Architecture GCN 3.0 Polaris
Code name Antigua Polaris 12
Type Desktop Laptop
Release date 19 November 2015 12 August 2019
Pipelines 2048 640
Core clock speed 1218 MHz
Boost Clock 970 MHz 1218 MHz
Transistor count 5,000 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 124.2 38.98
Floating-point performance 3,973 gflops
Length 221 mm
Memory bus width 256 Bit 64 Bit
Memory clock speed 970 MHz 6000 MHz
Memory bandwidth 182.4 GB/s 112.0 GB/s
Shared memory -
DirectX 12 (12_0)
Shader Model 6.3 6.4
OpenGL 4.5 4.6
OpenCL 2.0 2.0
Vulkan + 1.2.131
Monero / XMR (CryptoNight) 0.58 kh/s
FreeSync + +
Bus support PCIe 3.0
HDMI +
Laptop size large
Eyefinity +
HD3D +
PowerTune +
TrueAudio +
ZeroCore +
Mantle +
Design reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
DDMA audio +
Decred / DCR (Decred) 0.89 Gh/s
Ethereum / ETH (DaggerHashimoto) 20.63 Mh/s
Zcash / ZEC (Equihash) 175 Sol/s
Compute units 32
Form factor full height / full length
High bandwidth memory (HBM) -
LiquidVR +
FRTC +
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