Radeon HD 6770 vs Radeon R9 M390

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6770 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 6770 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 6770 Radeon R9 M390
Power consumption (TDP) 108 Watt
Interface PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon R9 M390 has 1 GB more memory, than Radeon HD 6770.
  • Radeon HD 6770 is used in Desktops, and Radeon R9 M390 - in Laptops.
  • Radeon HD 6770 is build with TeraScale 2 architecture, and Radeon R9 M390 - with GCN.
  • Radeon HD 6770 is manufactured by 40 nm process technology, and Radeon R9 M390 - by 28 nm process technology.

Game benchmarks

high / 1080p 3−4 18−20
ultra / 1080p 1−2 10−11
QHD / 1440p 0−1 5−6
4K / 2160p 4−5
low / 720p 14−16 35−40
medium / 1080p 5−6 21−24
The average gaming FPS of Radeon R9 M390 in Assassin's Creed Odyssey is 266% more, than Radeon HD 6770.

Full Specs

  Radeon HD 6770 Radeon R9 M390
Architecture TeraScale 2 GCN
Code name Juniper Pitcairn
Type Desktop Laptop
Release date 21 January 2011 9 June 2015
Pipelines 800 1024
Boost Clock 900 MHz
Transistor count 1,040 million 5000 Million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 34.00
Floating-point performance 1,360.0 gflops
Length 198 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 1050 MHz
Memory bandwidth 76.8 GB/s
Shared memory -
Shader Model 5.0
OpenGL 4.4 4.4
OpenCL 1.2 Not Listed
FreeSync +
Bus support PCIe 2.0 x16 PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 118 Mh/s 242 Mh/s
Laptop size large
Eyefinity + +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Design reference
CrossFire +
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