Radeon HD 7970 vs Radeon R9 M390

When comparing Radeon HD 7970 and Radeon R9 M390, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Radeon HD 7970 and Radeon R9 M390 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

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 7970 Radeon R9 M390
Power consumption (TDP) 300 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 1x 6-pin + 1x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 3 GB 2 GB
Display Connectors 1x DVI, 1x HDMI, 2x mini-DisplayPort
  Check Price Check Price
  • Radeon HD 7970 has 1 GB more memory, than Radeon R9 M390.
  • Radeon HD 7970 is used in Desktops, and Radeon R9 M390 - in Laptops.
  • Radeon HD 7970 and Radeon R9 M390 are build with GCN architecture.
  • Radeon HD 7970 and Radeon R9 M390 are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 35−40 18−20
ultra / 1080p 21−24 10−11
QHD / 1440p 16−18 5−6
4K / 2160p 10−11 4−5
low / 720p 60−65 35−40
medium / 1080p 40−45 21−24
The average gaming FPS of Radeon HD 7970 in Assassin's Creed Odyssey is 100% more, than Radeon R9 M390.

Full Specs

  Radeon HD 7970 Radeon R9 M390
Architecture GCN GCN
Code name Tahiti XT Pitcairn
Type Desktop Laptop
Release date 22 December 2011 9 June 2015
Pipelines 2048 1024
Boost Clock 925 MHz
Transistor count 4,313 million 5000 Million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 118.4
Floating-point performance 3,789 gflops
Length 274 mm
Memory bus width 384 Bit 256 Bit
Memory clock speed 1375 MHz
Memory bandwidth 264 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) 485 Mh/s 242 Mh/s
Laptop size large
Eyefinity + +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Design reference
CrossFire +
Ethereum / ETH (DaggerHashimoto) 20.71 Mh/s
  Check Price Check Price