P104 100 vs Radeon HD 7990

Find out if it is worth upgrading your current GPU setup by comparing P104 100 and Radeon HD 7990. 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 P104 100 and Radeon HD 7990. 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

  P104 100 Radeon HD 7990
Power consumption (TDP) 375 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 8-pin 2x 8-pin
Memory type GDDR5X GDDR5
Maximum RAM amount 4 GB 3 GB
Display Connectors No outputs 1x DVI, 4x mini-DisplayPort
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  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • P104 100 has 1 GB more memory, than Radeon HD 7990.
  • Both cards are used in Desktops.
  • P104 100 is build with Pascal architecture, and Radeon HD 7990 - with GCN 1.0.
  • Core clock speed of P104 100 is 657 MHz higher, than Radeon HD 7990.
  • P104 100 is manufactured by 16 nm process technology, and Radeon HD 7990 - by 28 nm process technology.
  • Radeon HD 7990 is 40 mm longer, than P104 100.
  • Memory clock speed of P104 100 is 4008 MHz higher, than Radeon HD 7990.

Game benchmarks

high / 1080p 35−40 35−40
ultra / 1080p 21−24 21−24
QHD / 1440p 16−18 16−18
4K / 2160p 10−11 10−11
low / 720p 60−65 60−65
medium / 1080p 40−45 40−45
P104 100 and Radeon HD 7990 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  P104 100 Radeon HD 7990
Architecture Pascal GCN 1.0
Code name GP104 Malta
Type Desktop Desktop
Release date 12 December 2017 24 April 2013
Pipelines 1920 2048
Core clock speed 1607 MHz 950 MHz
Boost Clock 1733 MHz 1000 MHz
Transistor count 7,200 million 4,313 million
Manufacturing process technology 16 nm 28 nm
Texture fill rate 208.0 128.0
Floating-point performance 8,873 gflops 2x 4,096 gflops
Length 267 mm 307 mm
Memory bus width 256 Bit 384 Bit
Memory clock speed 10008 MHz 6000 MHz
Memory bandwidth 320.3 GB/s 288.0 GB/s
DirectX 12 (12_1) 12 (11_1)
Shader Model 6.4 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.2.131 1.2.131
CUDA 6.1
Bitcoin / BTC (SHA256) 459 Mh/s
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
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