G400 won't install

[mplsmelo]

I found a jumper tonight that can set the agp to 66mhz. After I enabled it I overclocked my board back to 500mhz with no issues. The card runs great now.
As a followup to my last post, I shut the computer down last night (remember it was oc'd to 500 with the catd also oc'd 5%) only to wake up this morning and find I couldn't boot. I set multiplier back to 4.5 x 100 and booted fine. Now with the sdram/agp jumper set correctly I am booting with the board oc'd to 500; Sisoft reports agp running at 66mhz. So, before the g400 was probably running at 33mhz, correct? Why then would it let the board boot at 450mhz and not 500? Thanks for your timely replies.

[Sasq]

If you upped the fsb (from memory the 450mhz chips were multiplier locked) your agp slot would have been running at about 73Mhz, this could have been high enough to cause the problems you had

Dan

[ALBPM]

It should run fine at 73MHz.

Just in case make sure it fits in the AGP slot correctly. This was an issue with certain cases and ABIT mobos.





Paul

[Wombat]

Originally posted by mplsmelo
I found a jumper tonight that can set the agp to 66mhz. After I enabled it I overclocked my board back to 500mhz with no issues. The card runs great now.
As a followup to my last post, I shut the computer down last night (remember it was oc'd to 500 with the catd also oc'd 5%) only to wake up this morning and find I couldn't boot. I set multiplier back to 4.5 x 100 and booted fine. Now with the sdram/agp jumper set correctly I am booting with the board oc'd to 500; Sisoft reports agp running at 66mhz. So, before the g400 was probably running at 33mhz, correct? Why then would it let the board boot at 450mhz and not 500? Thanks for your timely replies.

No, that was almost certainly a 2/3 1/1 jumper. So, before you were running your G400 at 100MHz. That's way out of spec, but many Matrox cards can do it.

Sasq, this is a SS7 board. It's not multiplier locked.

What probably happened is that the drain on the MB's power system from providing the power for that extra 50MHz was enough that the G400 (or maybe your FSB) couldn't keep the extreme AGP speed going without proper current to go around.