PrefetchW not supported

steamclosed Not a bug

ValveSoftware/steam-for-linux#4766 · opened 2016-12-19 by silviucc · updated 2025-05-15 · 3 comments · github

Ssilviucc 2016-12-19 github

Your system information

Steam client version: 1481318740
Distribution (e.g. Ubuntu): Ubuntu 14.04 64bit
Opted into Steam client beta?: [Yes/No] No
Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Steam lists my CPU as not supporting PrefetchW.

It's an i5-2500k, I'm quite sure it does support it. Windows 10, on this same machine installed and works. It did not complain about missing features of my CPU before upgrading.

Steps for reproducing this issue:

I go to Help -> Systeminfo

Kkisak-valve maintainer 2016-12-19 github

Hello @silviucc,
A quick search says your processor should not support PrefetchW.
Is there an actual problem you are encountering that goes along with this or just an oddity you noticed?

Ssilviucc 2016-12-23 github

Hi,

Your own software disagrees with that. On Windows, Steam lists the same processor as supporting PrefetchW.

steam_windows_prefetchw

And here's a dump from Sysinternals Coreinfo:
cpu_info.txt

DDanny3 2025-05-15 github

It still says PrefetchW: Unsupported on Linux!
At least with an AMD Ryzen 7 3700X.

Nothing extracted yet.