yes it is i am using the same pc u mention and its the most stable pc i have right now as compared to the new one i bought just 2 weeks now its been like 4 yrs passed i am using 2.8ghz with 512kb 478 pin 400mhz processor on the D850MV with 2 gb of RDRAMS, and 7600GT agp this board even can go for 3.00Ghz 512kb 400mhz 478pin but tht processor is quite expensive, cos its very rare, i hope tht helps, glad to see tht some one have a board like me still using
here below is the link for the 3.00Ghz and 2.8Ghz (512kb/400mhz/478pin) so u can see for ur self Kent
i hope tht helps
I also have a D850MV and I bought a 2.8Ghz processor for it (2.8Ghz/512/400 code SL7EY, I believe it's the right one), but on power up I get nothin'... fans and drives spin up but no video display or boot screens.
I tried reseating the processor to no effect. I purchased it as new-old-stock and it looks perfect, so I am guessing it's ok. I don't have any other system to test it in. The extent of my diagnostics is to note that it does heat up like it should.
I double-checked that I have BIOS version P15, which according to Intel is the latest for my board. I see there are later versions (as high as P24) but they are apparently for D850EMV2 or D850EMD2 boards. I could try it anyway but am wary of "bricking" my board.
See the BIOS "Release Notes" link on this Intel page.
Simon, could you please check the BIOS version that yours is working with? Or Kent, if you were able to get yours working?
Or any other suggestions would be welcome. I assume I don't need to change any jumpers or anything when installing the faster processor?
Thanks much in advance.
Ah, the old trick of explaining your problem to others to solve it yourself... I think I found my issue.
As seen in the supported processors list it appears all the 512KB cache processors require later board revisions.
For me, it needs to be A56423-300 or later, and mine is -201.
Dang. Now I'm wondering if I should buy a newer D850MV motherboard on eBay to go with my new processor and my RDRAM upgrades (that's the expensive part), or live with my 1.8GHz processor, or screw the whole thing and upgrade the PC.
The reason I was trying not to upgrade the whole system wasn't cost (cheaper probably to junk this one) but was to keep my existing silent-PC case/fans/IDE drive and not have to reinstall a bunch of stuff. I don't know if I could image my drive over to a new system and have it work with that hardware, and/or if Windows would decide it was no longer a legal copy due the hardware signature changing, etc. Grr.
Well, it appears Intel means it with their warning about using only supported processors. I started having intermittent hard freezes after my 2.8Ghz experiment, and I think I've found the problem... two of the capacitors have burst (see circled areas above).
I can't say for certain that it was the result of putting in the wrong CPU but it's awfully coincidental.
So if you're upgrading your CPU I would highly recommend you double check your board's "AA" number first.
Further research... the bad capacitors may not be directly related. I suspect they were failing and adding the higher power processor pushed them over the edge. You can read more than you want to know about bad caps at http://www.badcaps.net/, complete with a forum.
I replaced my mobo with a slightly updated D850MVSE (with USB 2.0, I'm so modern!), which works with the new processor. A PITA to swap everything out, update BIOS and settings, etc... and I ended up still having to reactivate Windows and Office, which entailed digging up some old CDs.
In retrospect I should have just gone with a (signficantly) newer mobo from the start. Not so new that my power supply and AGP dual-monitor card wouldn't work with it, but new enough to get past the RDRAM fiasco. I'm not sure what the mobo would have been, and didn't feel like researching it, but my guess is the savings on the RDRAM alone would have paid for it.
Oh well, at least I am up and kicking again, and performance does seem to be a little snappier.