David Kanter (dkanter.delete@this.realworldtech.com) on July 26, 2012 9:31 am wrote:
> > > > What is the
> > > >
> > > currently best ratio of
> GPU to
> > CPU?
> > >
> > > That depends on your workload.
> >
> >
> > > >
> > > Will
> > the best future design be a
>
> > > > BlueGene/Q (for best I/O) driving an
> >
> > > optimum
> number of GPUs (for best Compute)?
> > >
> > > If you look at
>
> > the chart, it
> > > should be clear that BGQ stands alone and
> doesn't need
> > GPUs. From a power
> > > perspective, it's superior to
> all existing GPUs - and
> > it can run a far wider
> > > range of
> workloads.
> > >
> > > David
> >
> > BGQ is
> > about the
> same as 3GiB HD7970(947G/250W). So BGQ is quite likely to be inferior
> > to
> a 6GiB incoming-gen Firestream.
> > [If I recall correctly, at launch time AMD
>
> > listed 7970 GPU/board power as 210/250]
>
> I expect that the next
> generation of throughput processors (Knights Corner, Tahiti, Kepler) will
> significantly alter the landscape because they represent a jump in
> process.
>
> For AMD and Nvidia it is 40nm to 28nm, and for Intel it is the move
> to 22nm.
>
> DK

http://vr-zone.com/articles/intel-xeon-phi-b0-stepping--the-knight-in-shining-armor-/16871.html
(if not fake) Looks pretty bad: low freq, small ram, high tdp
The number is so bad that I tend to think it's fake.