GeForce 840A vs Radeon R9 290X

When comparing GeForce 840A and Radeon R9 290X, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 840A and Radeon R9 290X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  GeForce 840A Radeon R9 290X
Power consumption (TDP) 33 Watt 250 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin + 1 x 8-pin
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
  Check Price
  • Radeon R9 290X has 657% more power consumption, than GeForce 840A.
  • GeForce 840A is connected by PCIe 3.0 x8, and Radeon R9 290X uses PCIe 3.0 x16 interface.
  • Radeon R9 290X has 2 GB more memory, than GeForce 840A.
  • Both cards are used in Desktops.
  • GeForce 840A is build with Maxwell architecture, and Radeon R9 290X - with GCN.
  • GeForce 840A and Radeon R9 290X are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce 840A is 752 MHz higher, than Radeon R9 290X.

Game benchmarks

high / 1080p 3−4 35−40
ultra / 1080p 2−3 24−27
QHD / 1440p 0−1 18−20
4K / 2160p 10−11
low / 720p 14−16 60−65
medium / 1080p 5−6 45−50
The average gaming FPS of Radeon R9 290X in Assassin's Creed Odyssey is 616% more, than GeForce 840A.

Full Specs

  GeForce 840A Radeon R9 290X
Architecture Maxwell GCN
Code name GM108 Hawaii XT
Type Desktop Desktop
Release date 17 March 2014 24 October 2013
Pipelines 384 2816
Core clock speed 1029 MHz
Boost Clock 1124 MHz 947 MHz
Transistor count 6,200 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 176.0
Floating-point performance 863.2 gflops 5,632 gflops
Length 275 mm
Memory bus width 64 Bit 512 Bit
Memory clock speed 2002 MHz 1250 MHz
Memory bandwidth 16.02 GB/s 320 GB/s
Shared memory -
DirectX 12 (11_0)
Shader Model 5.1 6.3
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.1.126 +
CUDA 5.0
Monero / XMR (CryptoNight) 0.76 kh/s
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 623 Mh/s
Eyefinity +
HD3D +
TrueAudio +
Design reference
DisplayPort support +
CrossFire +
DDMA audio +
Decred / DCR (Decred) 1.07 Gh/s
Ethereum / ETH (DaggerHashimoto) 25.75 Mh/s
Zcash / ZEC (Equihash) 350 Sol/s
AppAcceleration +
LiquidVR +
TressFX +
UVD +
  Check Price