Radeon HD 7850 vs Radeon R9 390X

When choosing between Radeon HD 7850 and Radeon R9 390X, 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 7850 and Radeon R9 390X.

Main Specs

  Radeon HD 7850 Radeon R9 390X
Power consumption (TDP) 225 Watt 275 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin 1 x 6-pin, 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB
Display Connectors 1x DVI, 1x HDMI, 2x mini-DisplayPort 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 390X has 22% more power consumption, than Radeon HD 7850.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Both cards are used in Desktops.
  • Radeon HD 7850 is build with GCN 1.0 architecture, and Radeon R9 390X - with GCN.
  • Radeon HD 7850 and Radeon R9 390X are manufactured by 28 nm process technology.
  • Radeon R9 390X is 65 mm longer, than Radeon HD 7850.
  • Memory clock speed of Radeon HD 7850 is 150 MHz higher, than Radeon R9 390X.

Game benchmarks

high / 1080p 18−20 50−55
ultra / 1080p 10−12 30−35
QHD / 1440p 5−6 24−27
4K / 2160p 4−5 14−16
low / 720p 35−40 75−80
medium / 1080p 24−27 55−60
The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 152% more, than Radeon HD 7850.

Full Specs

  Radeon HD 7850 Radeon R9 390X
Architecture GCN 1.0 GCN
Code name Pitcairn Grenada XT
Type Desktop Desktop
Release date 5 March 2012 16 June 2015
Pipelines 1024 2816
Boost Clock 1000 MHz 1050 MHz
Transistor count 2,800 million 6,200 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 55.04 184.8
Floating-point performance 1,761 gflops 5,914 gflops
Length 210 mm 275 mm
Memory bus width 256 Bit 512 Bit
Memory clock speed 1200 MHz 1050 MHz
Memory bandwidth 153.6 GB/s 384 GB/s
Shared memory -
Shader Model 5.1 6.3
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan +
FreeSync + +
Bus support PCIe 2.1 x16 PCIe 3.0
HDMI + +
Bitcoin / BTC (SHA256) 249 Mh/s 684 Mh/s
Eyefinity + +
PowerTune +
TrueAudio +
Mantle +
Design reference reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire + +
VCE +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 12.5 Mh/s 27.5 Mh/s
High bandwidth memory (HBM) -
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