Somebody having access to a Windows machine with > 64 CPUs?

Andrey Repin
Mon Aug 10 17:05:00 GMT 2015

Greetings, Warren Young!

> On Aug 10, 2015, at 10:00 AM, Corinna Vinschen <> wrote:
>> for testing, I need somebody running a small test program on a machine
>> with more than 64 CPUs under Windows 7 or later.

> I don’t think that’s possible today.  Windows 7 Professional is limited to
> 2 physical processors and 256 cores, so the only way to get the result you
> want is a 2x33+ core system without Hyperthreading, or a 2x17+ core system with HT.

She didn't say she need an output from "Pro" version.
If you're referring to "Windows 7", that's just a generation, Windows Server
will suffice as well.

> Source:

> The lesser versions of Windows 7 also have 256-core limits, but only allow
> 1 physical processor, so you’d need a 65+ core processor without HT, or 33+ with HT.

> According to Newegg, the biggest ones available today are 16-core, so you
> can just barely hit 64 on Win7 Pro with HT, today.

> I think you need to wait another processor generation to break 64 logical cores under Windows 7.

> The contemporaneous version of Server is, I believe 2008 R2, which has 4+
> socket limits in all but the Foundation version, which would let you get to
> your 72 or 96 logical processor counts with today’s processors.

With best regards,
Andrey Repin
Monday, August 10, 2015 19:53:00

Sorry for my terrible english...

More information about the Cygwin mailing list