QX6700 VS Xeon E5355

[Synthetickiller]

Well, we've seen comparrisons between the e6600 and 3060 (xeon). Now lets move on to top of the line.

There is in x6800 equivalent, but there is one for the QX6700.

So, which one is faster?

Just as a reference point:
X5355 2.66GHz 1333MHz 8MB 120W - $1172
QX6700 2.66GHz 1066MHz 8MB 130W - $999
(there are other xeon versions which are below the 1000 dollar mark)

Reference: http://www.digit-life.com/news.html?07/22/95

 

[Guest]

Almost exact same speed EXECPT!
you have to use FB-Dimm with the Xeon Socket 771( I think asus has/is working/ on a non FB-dimm version) these FB-Dimm will impact your performance but will let you have looooots of memory.

So if you need multiple socket, lots of ram, exepensive server motherboard go for it =).

This is not an equivalent, it's a totally different beast because of the socket/platform whereas the 3xxx and E6xxx have the same socket/platform.

 

[Dante_Jose_Cuervo]

FB-DIMMs actually don't impact performance as much as people say they do. Synthetically they create horrible latency but when using them and comparing to Opertrons w/NUMA you can't really notice the high latency.

Now as for the whole asus thing about using Xeons with non-FBDIMM memory... they'd have to come up with their own chipset because the DP and MP xeons only run on the 5000 series chipsets which only have FB-DIMM connections.

 

[Dante_Jose_Cuervo]

True, unless you're actually using it for... a server! Surprise there... either way, comparing a QX6700 to an E5355 isn't really fair because the xeon is DP and the Core 2 is 1P.

 

[Dante_Jose_Cuervo]

That would actually be interesting... but rather pointless, but I get what you're saying. They basically are PDs but a lot better because they're Core 2 based... just binned for server usage. Two 3070s... for that you'd just get two 5150s since they're practically the same thing.

And I know peope are going to say "Well that's a bit overboard and the memory latency is HUGE. It's actually not as huge as you think it is... The memory-CPU bus IS 667MHz max, but the DIMM interconnect is 2.6GHz and serial, so that latency is actually not so bad.

But yeah, go ahead and pay for that if you want, maybe someone will make you a custom mobo and whatnot... but for that you could just get a server, and tweak it.

 

[Synthetickiller]

Thanks guys. This is the reason I come here. And I thought they were the same sorta core, silly me. :lol:

So is there a Xeon version of the QX6700?

 

[Dante_Jose_Cuervo]

For all intensive purposes they are the same core, just binned differently. Now is there a quad-core version of the QX6700? Not as of yet no.

 

[Synthetickiller]

Just don't want people having buyers remorse like had

Out of curiosity, what did you buy that you regret so much?