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PCI overclock limits???

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Fred Koser

Member
Joined
Oct 19, 2002
Location
St Petersburg, FL
Just got an AX7-333 last week to replace my 8Kha+ (sold to friend.) I had XMS2400 in the ePox board as I could never get over 145fsb b/c of the AGP and PCI running out of spec. Now that I've got a 1/5 divider to play with I picked up a stick of XMS3200c2. Just popped it in and I can run my AGOIA 1600+ at 180x10 w/ no problems. It'll do memtest 'till the cows come home, run through 3dMark benchies, etc. Seems pretty solid so far, but when I try to push beyond 180fsb it'll boot, but GF3ti200 doesn't seem to like it. (display doesn't power up at post, crashes if I try to run 3d benchies, etc.) I guess what I'm asking is how do people hit closer to 190-200fsb with this board? Right now, at 180 my AGP is at 72 and my PCI at 36. That seems pretty far out of spec, and I don't get how folks can push it to 190 or 200 (which would give an AGP of 76-80 and a PCI of 38-40.) One thought I had was my PSU. It's an Enermax 350W. It seems to hold voltages pretty stable under load, but I know I'm pushing it with all the junk in my case:

1600+ (AGOIA) @ 180x10
Swiftech mcxc370 w/Papst 33cfm
512mb XMS3200c2
Abit KX7-333
Visiontek GF3ti200 @ 215/460
WDse 80Gb
IBM60gxp 20Gb
Asus 52x
Teac 40x12x48
TBSC
Linksys NIC
USR 56Kmodem
Hauppauge WinTV Go!
4 80mm NMBs
2 12" cold cathodes

My idle temps are pretty decent for a 60mm fan at 39C idle and about 43-44C under load. Any ideas, or is it just time to suck it up and get a 400W Sparkle?

btw - the Hauppauge and modem are out right now to be sure they aren't the culprits.
 
Last edited:

Tecumseh

Member
Joined
Feb 26, 2002
Location
Ohio
You are less that 10% high on the PCI bus. What do you have
on the PCI bus? SCSI cards and some network cards freak at
about that speed, but other stuff runs just fine.

Wasn't there a thread a while back about a problem with some
Epox MBs using the Enermax PSU. Does this combo have a
too-low 5 V rail?
 
OP
Fred Koser

Fred Koser

Member
Joined
Oct 19, 2002
Location
St Petersburg, FL
Sorry, I must not have been clear enough in my first post.

I'm no longer using an ePox board. I'm using my Kx7-333. Voltages seem pretty stable when looking at MBM or Abit's Hardware Dr. I can run Memtest or Prime95 w/o it dropping much.
By "much" I mean it'll drop from 1.78-1.79 to 1.76-1.78 on the Vcore and from 4.89-4.92 to 4.84-4.86. This is all still w/in tollerances, right? Or am I just kidding myself?
 

Tecumseh

Member
Joined
Feb 26, 2002
Location
Ohio
Sorry, I read too fast. Your voltages look fine.

I don't really think the problem is the PCI running out of spec.
As for the video card, I just don't know.