Radeon R7 M340 vs Radeon R9 280X

Find out if it is worth upgrading your current GPU setup by comparing Radeon R7 M340 and Radeon R9 280X. 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 R7 M340 and Radeon R9 280X. 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 R7 M340 is a Laptop Graphics Card

Note: Radeon R7 M340 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 R7 M340 here:

Main Specs

  Radeon R7 M340 Radeon R9 280X
Power consumption (TDP) 250 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors None 1 x 6-pin + 1 x 8-pin
Memory type DDR3 GDDR5
Maximum RAM amount 4 GB 3 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R7 M340 is connected by PCIe 3.0 x8, and Radeon R9 280X uses PCIe 3.0 x16 interface.
  • Radeon R7 M340 has 1 GB more memory, than Radeon R9 280X.
  • Radeon R7 M340 is used in Laptops, and Radeon R9 280X - in Desktops.
  • Radeon R7 M340 and Radeon R9 280X are build with GCN architecture.
  • Radeon R7 M340 and Radeon R9 280X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 0−1 35−40
ultra / 1080p 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 1−2 60−65
medium / 1080p 0−1 40−45
The average gaming FPS of Radeon R9 280X in Assassin's Creed Odyssey is 6100% more, than Radeon R7 M340.

Full Specs

  Radeon R7 M340 Radeon R9 280X
Architecture GCN GCN
Code name Meso Pro DDR3 Thaiti XTL
Type Laptop Desktop
Release date 16 June 2015 8 October 2013
Pipelines 320 2048
Core clock speed 1021 MHz
Boost Clock 1021 MHz 1000 MHz
Transistor count 950 million 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.16 128.0
Floating-point performance 549.1 gflops 4,096 gflops
Length 275 mm
Memory bus width 128 Bit 384 Bit
Memory clock speed 1000 MHz
Memory bandwidth 16 GB/s 288 GB/s
Shared memory - -
Shader Model 5.1 5.1
OpenGL 4.4 4.6
OpenCL Not Listed 1.2
Vulkan + +
Monero / XMR (CryptoNight) 0.5 kh/s
FreeSync + +
Bus support PCIe 3.0 PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 74 Mh/s 494 Mh/s
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
Compute units 6
AppAcceleration +
LiquidVR +
TressFX +
UVD +
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