Radeon HD 7990 vs Radeon R9 380X

When choosing between Radeon HD 7990 and Radeon R9 380X, 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 Radeon HD 7990 and Radeon R9 380X.

Main Specs

  Radeon HD 7990 Radeon R9 380X
Power consumption (TDP) 375 Watt 190 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 3 GB 4 GB
Display Connectors 1x DVI, 4x mini-DisplayPort 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 7990 has 97% more power consumption, than Radeon R9 380X.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon R9 380X has 1 GB more memory, than Radeon HD 7990.
  • Both cards are used in Desktops.
  • Radeon HD 7990 is build with GCN 1.0 architecture, and Radeon R9 380X - with GCN 3.0.
  • Radeon HD 7990 and Radeon R9 380X are manufactured by 28 nm process technology.
  • Radeon HD 7990 is 86 mm longer, than Radeon R9 380X.
  • Memory clock speed of Radeon HD 7990 is 5030 MHz higher, than Radeon R9 380X.

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
Radeon HD 7990 and Radeon R9 380X have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  Radeon HD 7990 Radeon R9 380X
Architecture GCN 1.0 GCN 3.0
Code name Malta Antigua
Type Desktop Desktop
Release date 24 April 2013 19 November 2015
Pipelines 2048 2048
Core clock speed 950 MHz
Boost Clock 1000 MHz 970 MHz
Transistor count 4,313 million 5,000 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 128.0 124.2
Floating-point performance 2x 4,096 gflops 3,973 gflops
Length 307 mm 221 mm
Memory bus width 384 Bit 256 Bit
Memory clock speed 6000 MHz 970 MHz
Memory bandwidth 288.0 GB/s 182.4 GB/s
DirectX 12 (11_1)
Shader Model 5.1 6.3
OpenGL 4.6 4.5
OpenCL 1.2 2.0
Vulkan 1.2.131 +
Monero / XMR (CryptoNight) 0.58 kh/s
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 459 Mh/s
Eyefinity +
HD3D +
PowerTune +
TrueAudio +
ZeroCore +
Mantle +
Design reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
DDMA audio +
Decred / DCR (Decred) 0.89 Gh/s
Ethereum / ETH (DaggerHashimoto) 44 Mh/s 20.63 Mh/s
Zcash / ZEC (Equihash) 175 Sol/s
Compute units 32
Form factor full height / full length
High bandwidth memory (HBM) -
LiquidVR +
FRTC +
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