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Bushmsn
08-28-2003, 09:14 AM
If I upgrade to a dual xeon machine is there a way to use my pc 800 in a new machine?

tonsofpcs
08-28-2003, 09:16 AM
Originally posted by Bushmsn
If I upgrade to a dual xeon machine is there a way to use my pc 800 in a new machine?

get a pc 800 card :D

Bushmsn
08-28-2003, 09:20 AM
Are you saying that there are daul xeon motherboards that support 9c 800 rambus

tonsofpcs
08-28-2003, 09:23 AM
Originally posted by Bushmsn
Are you saying that there are daul xeon motherboards that support 9c 800 rambus

i do remember seeing one, check companies that list at pricewatch

kirkmorger
08-28-2003, 10:57 AM
Go E7505. DDR is cheap, and you won't ever miss your PC-800.

However, if you can find a i860 board used for cheap (unlikely, but possible), make sure your memory will work with it first.

The i860 is still VERY respectable technology, infinitely better than P4 stuff with its 32bit PCI. But if you are buying NEW, buy E7505. No sense spending a ton of doe and getting less than the absolute best.

IMHO: On Xeon systems, memory is probably the least expensive component. Sacrificing 533FSB and PCI-X for the sake of being able to re-use your legacy PC-800 would be a mistake, if it's possible for you to get E7505 instead.

ScorpioProd
08-29-2003, 12:42 AM
Of course, I do find it interesting that my "old" i860 based dual-X with RAMBUS tests faster than an equivalent set of processors in one of the "new" DDR boards... RAMBUS isn't bad at all.

"Faster" based on what autoconfig in the VT[3] will report.

kirkmorger
08-29-2003, 06:09 PM
As I said, "The i860 is still VERY respectable technology".

However, the i860 boards are starting to show their age, though.

The *three* buses and PCI-X @ 133MHz, on board gigabit networking and firewire and USB-2, optical audio, AGP-8X, and 533 FSB all add up. Being able to use DDR memory (which is very inexpensive) is fantastic.

The E7505 boards are hardly any more expensive than the i860 boards were.

If you already own an i860, or if you can get one cheap, there is little benefit to getting a E7505. But for someone buying NEW, there is no reason not to.

BTW: The IWill DP533-S uses unregisterd DDR, which is VERY fast. I haven't seen anything where an i860 meets, let alone exceeds it . As a mater of fact, on latency (as measured in Cachemem) the i860 had TWICE the latency, and even worse when all RIMM slots filled. (RDRAM slows down if you daisy chain).

An additional note, the newest Xeons with the "frik'n huge" cache, are 533 FSB only. Granted, they are way over priced, but eventually they'll get afordable?

Again, I'm not recomending anyone pitch a i860 system for an E7505. But for someone buying NEW, it's just too good to pass up.