GeForce 840A vs Radeon R9 270X

Find out if it is worth upgrading your current GPU setup by comparing GeForce 840A and Radeon R9 270X. 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 GeForce 840A and Radeon R9 270X. 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.

Main Specs

  GeForce 840A Radeon R9 270X
Power consumption (TDP) 33 Watt 180 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors 2 x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 270X has 445% more power consumption, than GeForce 840A.
  • GeForce 840A is connected by PCIe 3.0 x8, and Radeon R9 270X uses PCIe 3.0 x16 interface.
  • GeForce 840A and Radeon R9 270X have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • GeForce 840A is build with Maxwell architecture, and Radeon R9 270X - with GCN.
  • GeForce 840A and Radeon R9 270X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 3−4 24−27
ultra / 1080p 2−3 14−16
QHD / 1440p 0−1 10−11
4K / 2160p 6−7
low / 720p 14−16 45−50
medium / 1080p 5−6 30−35
The average gaming FPS of Radeon R9 270X in Assassin's Creed Odyssey is 400% more, than GeForce 840A.

Full Specs

  GeForce 840A Radeon R9 270X
Architecture Maxwell GCN
Code name GM108 Curacao XT
Type Desktop Desktop
Release date 17 March 2014 8 October 2013
Pipelines 384 1280
Core clock speed 1029 MHz
Boost Clock 1124 MHz 1050 MHz
Transistor count 2,800 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 84.00
Floating-point performance 863.2 gflops 2,688 gflops
Memory bus width 64 Bit 256 Bit
Memory clock speed 2002 MHz
Memory bandwidth 16.02 GB/s 179.2 GB/s
Shared memory -
DirectX 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 +
CUDA 5.0
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 318 Mh/s
Eyefinity +
HD3D +
TrueAudio +
Design reference
DisplayPort support +
CrossFire +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 30 Mh/s
Zcash / ZEC (Equihash) 163 Sol/s
AppAcceleration +
LiquidVR +
TressFX +
UVD +
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