AMD or Intel?

[Decibel!]

On Sep 13, 2007, at 3:24 PM, Palle Girgensohn wrote:
> --On torsdag, torsdag 13 sep 2007 15.07.17 -0400 Francisco Reyes  
> <lists at stringsutils.com> wrote:
>
>> Palle Girgensohn writes:
>>
>>> Now, I hear rumors that AMD is to be preferred over Intel for
>>> performance
>>
>> From what I have read in the past, specially in the postgresql  
>> list, it
>> seems the AMD64 cpus do better with Postgresql. Possibly because of
>> better bus architecture.
>
> I think this is not current information; the new woodcrest  
> architecture performs mucg better, although this is deduced from  
> this thread's discussion...

Except this thread has largely glossed over the importance of memory  
bandwidth, which is exactly the reason why Opterons have been beating  
Xeons for several years. Last I'd heard, things were fairly close  
between the two, but that would matter on how many cores and physical  
CPUs you have.

It would be good if someone could do a database benchmark for some of  
the larger parts.

Something else worth mentioning... a lot of work is being done to  
improve PostgreSQL scalability for larger numbers of CPUs. If you're  
looking at anything over 4 cores, I recommend going to 8.3 ASAP.
-- 
Decibel!, aka Jim C. Nasby, Database Architect  decibel at decibel.org
Give your computer some brain candy! www.distributed.net Team #1828