Does anyone have an 850E chipset on their motherboard?

[Hades_au]

I've been noticing around many overclocking websites that those with 850E chipsets and RDRAM are having problems running Prime95 for more than 24 hours and this is even on stock machines. Some of the quotes from Overclockers.com.au are

Originally posted by chainbolt

This is well known for the P4T533, it's just a matter of time that Prime fails. Nobody can run Prime for more than 24 hours on the P4T533, regardless your CPU speed. Go and figure. We all thought it must be the P4T533, but funny with the Epox 4T4A, also chipset 850E with 32-bit RDRAM/RIMM 4200, it was the same.

conclusions?

Has anyone here found anything such as this?

[Prime95]

Yes, I've an Abit TH7II-Raid motherboard. I've been running a 1.6 at 2.3 for about a year.

[eepiccolo]

I was thinking of getting a new P4 with the 850E chipset and RDRAM, but now this thread concerns me. Do these problems occur when you don't overclock, or just when you do overclock?

[xtreme2k]

Using an Asus P4T533-C with an Intel P4 1.8A@2.52GHz CPU. Kingston PC1066 ECC RDRAM. Not a single error in months.

[eepiccolo]

Originally Posted by xtreme2k

Using an Asus P4T533-C with an Intel P4 1.8A@2.52GHz CPU. Kingston PC1066 ECC RDRAM. Not a single error in months.

xtreme, may I ask what 1.8A means? Just to show I'm not lazy, I tried doing a google search, but only found mostly pages not in english, and the ones that were in english were really no help.

[ebx]

1.8A means P4 1.8GHz Northwood 400MHz FSB.

533MHz FSB would be B.

The A are the about the only P4 that one can
overclock practically - by pumping up the FSB
from 400 to 533 on a capable board.

[Xyzzy]

Intel product codes...

http://support.intel.com/support/processors/pentium4/poc.htm

[QuintLeo]

Any of the Northwood "A" core CPUs of 2 Ghz or under can be overclocked quite a bit.

2.0s often won't do the full bump up to 533 from 400 reliably, but they should manage 480 give or take on a MB that has multiple FSB steps, like the one in my Shuttle SS51G box (2.0A running Prime95 for the last 1.5 months at 476 FSB - tried it at 480, but it got occasional errors - though might have been the RAM limiting out before the CPU did).

1.8As usually will go to 533, by multiple reports, and pretty much any 1.6A should bump up to 533 or perhaps even a little higher if you can find a MB and RAM that work reliably at the higher FSB.

I understand the later Celerons overclock at least as well, but they're limited quite a bit by the 128k cache, where the Northwood P4s have 512k....

[Hades_au]

I'll have to keep my eyes open with regards to the 850E and 4200 RDRAM.

Of a number of 1.8A's (about 6) only 1 didn't overclock straight to 2.4. It's limit is 2.337. The lower the mulitplier, the better for those 400 FSB Northwood cpu's.

[Hades_au]

Originally Posted by eepiccolo

I was thinking of getting a new P4 with the 850E chipset and RDRAM, but now this thread concerns me. Do these problems occur when you don't overclock, or just when you do overclock?

This is an interesting question, although, 'overclockers' by nature, tend to push their machines and even when they are running at 'stock' speeds probably are probably pushing the ram or video card. The bios settings probably should set to 'fail-safe' for a realistic comment.

I probably wouldn't worry about it. Xtreme2k has one up and running, so I'd assume that they can be made to work, at least at stock speeds.

[DSheets]

I have (actually my wife's PC) a Gigabyte GA-8IHXP with a 2.53 at stock speed and PC1066 RDRAM and not had a single error in months. I don't think it has ever been rebooted either.

Dan 8)