On Mon, Jan 11, 2010 at 4:17 PM, Greg Smith <greg@2ndquadrant.com> wrote:
> Scott Marlowe wrote:
>>
>> The DDR3 Nehalem and DDR2 AMD are both actually pretty close in real
>> world use on 4 or more socket machines. Most benchmarks on memory
>> bandwidth give no huge advantage to either one or the other. They
>> both max out at about 25GB/s.
>>
>
> The most fair comparison I've seen so far is
> http://www.advancedclustering.com/company-blog/stream-benchmarking.html
> which puts the faster Intel solutions at 37GB/s, while the Opterons bog down
> at 20GB/s. That matches my own tests pretty well too--Intel's got at least
> a 50% lead here in many cases.
But that's with only 2 sockets. I'd like to see something comparing 4
or 8 socket machines. Hmmm, off to googol.
