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). -- Kind Regards, Simon Newton E: simon.new...@gmail.com -- 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/CADLktjDS4CnePM8kPAzTxs97ZpJAVVQT7U686sdqj%2B-NBQ9N6A%40mail.gmail.com.
