[vfio-users] Hardware recommendation?

[Ryan Flagler]

You are correct that the E5-2670v3 would need the R3 socket, but that
version of the CPU is not anywhere near $60 if that's what you were hoping
for. I currently use the E5-2670v1 and am not aware of a vt-d issue. Do you
have more information about that?

On Fri, May 13, 2016 at 11:07 AM Tobias Geiger <tobias.geiger at vido.info>
wrote:

> Hi Ryan,
>
> ok now im confused:
>
> my understanding was i need a SR0KX version of the E5-2670, cause the
> SR0H8 hast microcode issues regarding vtd.
> so far so good. i thought SR0KX = E5-2670 v3 and needs a R3 socket - but
> you say i might be wrong here?
>
> unfortunatly the ark doesnt show the exact socket you need, they only
> mention the steppings on the right side of the page:
>
> http://ark.intel.com/de/products/64595/Intel-Xeon-Processor-E5-2670-20M-Cache-2_60-GHz-8_00-GTs-Intel-QPI
>
> Greetings!
> Tobias
>
>
> Am 13.05.2016 17:59, schrieb Ryan Flagler:
> > i personally haven't had issues with my SuperMicro board. The biggest
> > issues have been related to AMD/nVidia specific issues. The asrock
> > motherboard you linked is not compatible wit hthe E5-2670 cpu though.
> > The one you linked is a Socket R3, you need Socket R for the
> > E5-2670v1.
> >
> > On Fri, May 13, 2016 at 10:28 AM Tobias Geiger
> > <tobias.geiger at vido.info> wrote:
> >
> >> Hi,
> >>
> >> great suggestions - thanks so far!
> >>
> >> Seems i have the choice between
> >> - this really good price/value E5-2670 Dual Xeon and this board:
> >>
> >
> http://www.asrockrack.com/general/productdetail.asp?Model=EP2C612D8#Specifications
> >> (the Supermicro one is at least here in Germany much more expensive
> >> -
> >> and the Asrock has more SATA3 Ports... - do you see any difficulties
> >> in
> >> comparison with the Supermicroboard you mentioned?)
> >>
> >> oooor
> >> -  i7-6700K Intel Skylake with a board like this :
> >> https://www.asus.com/de/Motherboards/Q170M-C/specifications/ (Q
> >> Chipset
> >> should ensure VTD funcionality i hope!)
> >>
> >> so basicaly the choice between 16 cores with the dual xeon but with
> >> a
> >> max of 3.3Ghz - or 4 cores "only" with the Skylake i7 but 4.2Ghz...
> >> puh. hard one. games rarly scale well on multiple cpus, but OTOH
> >> this
> >> is/will be changing with time and newer games... but a rapid
> >> single-core-performance is always handy for the tasks that are not
> >> threadable...
> >>
> >> now im really stuck in my descision-finding-process :)
> >> i'll think about it for the weekend
> >>
> >> if you see any omg-dont-buy-that-it-wont-work issues - please tell
> >> me!
> >>
> >> Thanks and Greetings
> >> Tobias
> >>
> >> Am 12.05.2016 17:23, schrieb Ryan Flagler:
> >>> Yep, that's the one. Dirt cheap! I was able to snag a used
> >> SuperMicro
> >>> X9DR7-LN4F dual-socket motherboard and threw 2 of them in there. I
> >>> don't have much of an issue giving my VMs enough CPU. :) ECC DDR3
> >>> Registered memory is relatively cheap on ebay too.
> >>>
> >>> On Thu, May 12, 2016 at 10:21 AM Alex Williamson
> >>> <alex.l.williamson at gmail.com> wrote:
> >>>
> >>>> On Thu, May 12, 2016 at 9:14 AM, Ryan Flagler
> >>>> <ryan.flagler at gmail.com> wrote:
> >>>>
> >>>>> I know Alex has recommended the E5 series
> >> processors/motherboards
> >>>>> for the best compatibility. There are 2 versions of motherboards
> >>>>> that support that right now. Socket R and Socket R3. Obviously
> >> E5
> >>>>> series processors are not very affordable brand new; however,
> >> the
> >>>>> market is currently flooded with server pulled E5-2670 CPUs.
> >> They
> >>>>> can be easily found for $60 on ebay. These CPUs work on Socket R
> >>>>> motherboards. Additionally, these motherboards will still
> >> support
> >>>>> DDR3 memory which is cheaper to acquire than DDR4 as well.
> >>>>>
> >>>>> That's where I'd start if I was you. Obviously there could
> >> always
> >>>>> be issues with 1 manufacturer to another, but hopefully that's a
> >>>>> starting place.
> >>>>
> >>>> Nice tip!  You're referring to Sandy-Bridge EP, right?
> >>>>
> >>>>
> >>>
> >>
> >
> http://ark.intel.com/products/64595/Intel-Xeon-Processor-E5-2670-20M-Cache-2_60-GHz-8_00-GTs-Intel-QPI
> >>>>
> >>>> 8-core, hmmm that's tempting.
>
>
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