GeForce 945A vs Radeon HD 7990

When choosing between GeForce 945A and Radeon HD 7990, 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 945A and Radeon HD 7990.

Main Specs

  GeForce 945A Radeon HD 7990
Power consumption (TDP) 33 Watt 375 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 3 GB
Display Connectors No outputs 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 7990 has 1036% more power consumption, than GeForce 945A.
  • GeForce 945A is connected by PCIe 3.0 x8, and Radeon HD 7990 uses PCIe 3.0 x16 interface.
  • Radeon HD 7990 has 2 GB more memory, than GeForce 945A.
  • Both cards are used in Desktops.
  • GeForce 945A is build with Maxwell architecture, and Radeon HD 7990 - with GCN 1.0.
  • Core clock speed of GeForce 945A is 122 MHz higher, than Radeon HD 7990.
  • GeForce 945A and Radeon HD 7990 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7990 is 988 MHz higher, than GeForce 945A.

Game benchmarks

high / 1080p 9−10 35−40
ultra / 1080p 5−6 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 20−22 60−65
medium / 1080p 10−12 40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 272% more, than GeForce 945A.

Full Specs

  GeForce 945A Radeon HD 7990
Architecture Maxwell GCN 1.0
Code name GM108 Malta
Type Desktop Desktop
Release date 13 March 2015 24 April 2013
Pipelines 384 2048
Core clock speed 1072 MHz 950 MHz
Boost Clock 1189 MHz 1000 MHz
Transistor count 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 28.54 128.0
Floating-point performance 903.2 gflops 2x 4,096 gflops
Length 307 mm
Memory bus width 64 Bit 384 Bit
Memory clock speed 5012 MHz 6000 MHz
Memory bandwidth 40.1 GB/s 288.0 GB/s
DirectX 12 (11_0) 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.2.131
CUDA 5.0
Bitcoin / BTC (SHA256) 108 Mh/s 459 Mh/s
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
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