yes, here some links in increasing credibility order :) :

https://m.reddit.com/r/pcmasterrace/comments/3smipw/psa_thousands_of_cheap_e5_xeons_flood_ebay/
https://forums.servethehome.com/index.php?threads/intel-xeon-e5-2670-deal-and-price-tracking.7133/page-2
http://www.techpowerup.com/152978/sandy-bridge-e-vt-d-broken-in-c1-stepping-fixed-in-c2-stepping-shortly-after-launch

Greetings
Tobias

Am 13.05.2016 18:09, schrieb 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.gei...@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.gei...@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.william...@gmail.com> wrote:

On Thu, May 12, 2016 at 9:14 AM, Ryan Flagler
<ryan.flag...@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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