Radeon R9 280X vs Radeon R9 M395X

Find out if it is worth upgrading your current GPU setup by comparing Radeon R9 280X and Radeon R9 M395X. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon R9 280X and Radeon R9 M395X. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon R9 M395X is a Laptop Graphics Card

Note: Radeon R9 M395X 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 R9 M395X here:

Main Specs

  Radeon R9 280X Radeon R9 M395X
Power consumption (TDP) 250 Watt 250 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin + 1 x 8-pin None
Memory type GDDR5 GDDR5
Maximum RAM amount 3 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • Both graphics cards have the same power consumption of 250 Watt.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon R9 M395X has 1 GB more memory, than Radeon R9 280X.
  • Radeon R9 280X is used in Desktops, and Radeon R9 M395X - in Laptops.
  • Radeon R9 280X is build with GCN architecture, and Radeon R9 M395X - with GCN 3.
  • Radeon R9 280X and Radeon R9 M395X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 35−40 24−27
ultra / 1080p 21−24 14−16
QHD / 1440p 16−18 9−10
4K / 2160p 10−11 6−7
low / 720p 60−65 45−50
medium / 1080p 40−45 30−35
The average gaming FPS of Radeon R9 280X in Assassin's Creed Odyssey is 45% more, than Radeon R9 M395X.

Full Specs

  Radeon R9 280X Radeon R9 M395X
Architecture GCN GCN 3
Code name Thaiti XTL Amethyst XT
Type Desktop Laptop
Release date 8 October 2013 16 October 2014
Pipelines 2048 2048
Core clock speed 723 MHz
Boost Clock 1000 MHz
Transistor count 4,313 million 5,000 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 128.0 92.54
Floating-point performance 4,096 gflops 2,961 gflops
Length 275 mm
Memory bus width 384 Bit 256 Bit
Memory clock speed 1250 MHz
Memory bandwidth 288 GB/s 160.0 GB/s
Shared memory - -
Shader Model 5.1 6.3
OpenGL 4.6 4.4
OpenCL 1.2 Not Listed
Vulkan +
Monero / XMR (CryptoNight) 0.5 kh/s
FreeSync + +
Bus support PCIe 3.0 PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 494 Mh/s 413 Mh/s
Laptop size large
Eyefinity + +
HD3D + +
PowerTune +
DualGraphics +
TrueAudio + +
ZeroCore +
Switchable graphics +
Mantle +
Design reference
DisplayPort support +
CrossFire +
DDMA audio +
Decred / DCR (Decred) 1.07 Gh/s
Ethereum / ETH (DaggerHashimoto) 14.42 Mh/s
Zcash / ZEC (Equihash) 285 Sol/s
AppAcceleration +
LiquidVR +
TressFX +
UVD +
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