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1950XT slooow

Nem2k

Nem2k

Nem2k

Associate
Joined
8 Jan 2007
Posts
49
my 1950xt is about 2-3 weeks old, and up until earlier today it was running just fine
i was getting about 6100 on 3dmark06 which is about average

today i was playing with the multiplier on my motherboard, changing the fsb, just general overclocking of the cpu, didnt really touch the graphics card

then i run PCmark06 and my graphics score drops to below 4000 (it was about 7-8000 before)
and in 3Dmark06, i didnt even finish the bench because it was running so slow. during the first benchmark test with the minigun guy, i was getting about 10fps which is shocking 8O

so...anyone know whats wrong with this thing? i havent touched anything to do with the gpu, its still running the latest drivers and everything, just all of a sudden the performance has dropped by more than half and i dont know why
 
You've probably got the same problem as me with my P5BD and X1900XT.. If you ramp the speed on the board up too much, the 16x PCIE slot changes to a 1x slot! I never worked out what was going wrong, was baffling me for ages until someone told me about the 1x thing. Apparently uping the southbridge voltage can help, but it doesn't for me... Running my CPU at anything over 3.3GHz means I have to have a 1x PCIE slot dropping my 06 scores from about 7500 down to less than 5000!
 
I had the same problem although this was with a Nvidia card. The x1 is a problem when overclocking and according to various forums have 2 solutions. Either revert to an older bios 0604 (I think) or you have to up nb/sb voltages until it works. Obviously be carefull when playing with voltages but there is a good P5B thread on xtremesystems that will help more. As for me I fiddled with various options in the Bios and it is now always x16.
 
i think i worked it out

for some reason, if you increase the northbridge voltage past 1.45v, then the pci-e slot drops to 1x speed. set it to 1.45 or lower and it functions at the proper 16 speed...i think :confused: thats been the case so far, not sure if its gunna change itself back unexpectedly or not though
 
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