Radeon HD 7850 vs Radeon R9 M390

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 7850 and Radeon R9 M390. 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 Radeon HD 7850 and Radeon R9 M390. 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.

Radeon R9 M390 is a Laptop Graphics Card

Note: Radeon R9 M390 is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Radeon R9 M390 here:

Main Specs

  Radeon HD 7850 Radeon R9 M390
Power consumption (TDP) 225 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 1x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 7850 and Radeon R9 M390 have maximum RAM of 2 GB.
  • Radeon HD 7850 is used in Desktops, and Radeon R9 M390 - in Laptops.
  • Radeon HD 7850 is build with GCN 1.0 architecture, and Radeon R9 M390 - with GCN.
  • Radeon HD 7850 and Radeon R9 M390 are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 18−20 18−20
ultra / 1080p 10−12 10−11
QHD / 1440p 5−6 5−6
4K / 2160p 4−5 4−5
low / 720p 35−40 35−40
medium / 1080p 24−27 21−24
The average gaming FPS of Radeon HD 7850 in Assassin's Creed Odyssey is 6% more, than Radeon R9 M390.

Full Specs

  Radeon HD 7850 Radeon R9 M390
Architecture GCN 1.0 GCN
Code name Pitcairn Pitcairn
Type Desktop Laptop
Release date 5 March 2012 9 June 2015
Pipelines 1024 1024
Boost Clock 1000 MHz
Transistor count 2,800 million 5000 Million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 55.04
Floating-point performance 1,761 gflops
Length 210 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 1200 MHz
Memory bandwidth 153.6 GB/s
Shared memory -
Shader Model 5.1
OpenGL 4.6 4.4
OpenCL 1.2 Not Listed
FreeSync + +
Bus support PCIe 2.1 x16 PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 249 Mh/s 242 Mh/s
Laptop size large
Eyefinity + +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Design reference
CrossFire +
Ethereum / ETH (DaggerHashimoto) 12.5 Mh/s
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