On Sun, Apr 3, 2022 at 6:18 PM Simon Newton <simon.new...@gmail.com> wrote:
> > On Sun, 3 Apr 2022 at 16:46, Franz <169...@gmail.com> wrote: > >> >> Many thanks Simon, >> I do not have a T430, I have a W520 with coreboot, but the problem is >> just the same. I was wondering why VT-d is not working and your email >> explained it. So many thanks. >> Now I suppose I should buy some other Ivy Bridge CPU that fully supports >> virtualization. But if Intel gave the same name to CPUs having different >> features I am very afraid to go wrong again. May you please give me some >> hints to find a compatible CPU? >> Best >> Franz >> >> > Sure - > > On the intel ark pages, just check the 'package size' section and make > sure that its rPGA988. Make sure the cpu has VT-d. > > I havent done any work on the w520 so I cant really advise on which would > be the best CPU. On the t430 I run 3740QM but this requires changing the > heatsink as the CPU is 45w TDP where the original CPU was 35w TDP. Sven > runs the 3840QM on his laptop. Both CPUs are the top end of what you can > get with both VTd and staying at 45w TDP for heat. > > This page > https://forums.lenovo.com/t5/ThinkPad-P-and-W-Series-Mobile/w520-cpu-upgrade/m-p/1559926 > over at lenovo forums seems to imply that some fan assemblies for the w520 > can handle 55wTDP (they have part numbers on the page too). This means that > the best performing CPU you could use with Qubes in the w520 is i7 3940XM > but its going to throw out some heat when its under load. Its a small gain > over the 3840QM, so if burning your legs is a concern then maybe just go > for the 3740/3840 .. just make sure your existing fan assembly can handle > 45w TDP (or 55w TDP if you chose 3940). > Love you Simon, many thanks -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/CAPzH-qCSJQjb8Py6pFXWffnqswhtR1%3DrTnWsHkLHbTNB8f0qUw%40mail.gmail.com.
