RX 5700 XT fluctuating clock speeds

Discussion created by salty_roman on Nov 7, 2019
Latest reply on Mar 11, 2020 by koszalek


I'm getting clock speeds issue on my RX 5700 XT Pulse.

My GPU settings (undervolt/overclock) (was stable and issueless):

  • Core: 2000MHz (actual 1930-1940MHz)
  • Core Voltage: 1080mv
  • Memory: 910MHz (actual 1820MHz)
  • Power limit: 0%

Problem description:

  • If I have custom settings set in AMD Wattman I'm reaching 99% usage (which is normal = no vsync) but not getting to factory clocks.
  • GPU is reaching clocks between 1600-1640MHz on Core and Memory clocks are sometimes jumping from 875MHz to mentioned 910MHz.
  • If I put Power limit to 50% which kinda solves my issue but I was able to run that settings mentioned above without any touch on Power limit.

When it happend:

  • Yesterday when I installed new driver 19.11.1. I DDU it and installed 19.10.1 and still it seems I have the same issue.

My possible solutions for it:

  • Drivers (Tried 19.11.1. , 19.10.1 and will try 19.10.2)
  • PCIe settings in BIOS is set to Auto instead of 3.0
  • Shader cache (as I read in similar issue post)
  • High performance set in Windows (Power options)
  • Let me know what you think the case might be.

Thank you for your help and time.


My Setup:

Ryzen 5 1600 @4GHz (stable, no thermal throtteling)

RX 5700 XT Pulse

16 GB 3000MHz

EVGA 650W Gold Quality

Gigabyte AB350 Gaming rev. 1.0