GeForce 840A vs Radeon HD 7950

When choosing between GeForce 840A and Radeon HD 7950, 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 GeForce 840A and Radeon HD 7950.

Main Specs

  GeForce 840A Radeon HD 7950
Power consumption (TDP) 33 Watt 200 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors 2x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 3 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 7950 has 506% more power consumption, than GeForce 840A.
  • GeForce 840A is connected by PCIe 3.0 x8, and Radeon HD 7950 uses PCIe 3.0 x16 interface.
  • Radeon HD 7950 has 1 GB more memory, than GeForce 840A.
  • Both cards are used in Desktops.
  • GeForce 840A is build with Maxwell architecture, and Radeon HD 7950 - with GCN 1.0.
  • GeForce 840A and Radeon HD 7950 are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce 840A is 752 MHz higher, than Radeon HD 7950.

Game benchmarks

high / 1080p 3−4 35−40
ultra / 1080p 2−3 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 14−16 60−65
medium / 1080p 5−6 40−45
The average gaming FPS of Radeon HD 7950 in Assassin's Creed Odyssey is 583% more, than GeForce 840A.

Full Specs

  GeForce 840A Radeon HD 7950
Architecture Maxwell GCN 1.0
Code name GM108 Tahiti
Type Desktop Desktop
Release date 17 March 2014 31 January 2012
Pipelines 384 1792
Core clock speed 1029 MHz
Boost Clock 1124 MHz 1250 MHz
Transistor count 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 89.60
Floating-point performance 863.2 gflops 2,867 gflops
Length 267 mm
Memory bus width 64 Bit 384 Bit
Memory clock speed 2002 MHz 1250 MHz
Memory bandwidth 16.02 GB/s 240 GB/s
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
Monero / XMR (CryptoNight) 0.56 kh/s
FreeSync +
Bus support PCIe 3.0 x16
HDMI +
Bitcoin / BTC (SHA256) 381 Mh/s
Eyefinity +
PowerTune +
ZeroCore +
Design reference
Number of Eyefinity displays 6
CrossFire +
Decred / DCR (Decred) 0.78 Gh/s
Ethereum / ETH (DaggerHashimoto) 13.86 Mh/s
Zcash / ZEC (Equihash) 250 Sol/s
Compute units 28
AppAcceleration +
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