so Vlink 8x is the cause?I have an idea, let's put the nice blue head sink on SB from NB, and get a fan to activly cool the NB (there are 2 holes around NB for the fan)
AGP 8x is directly link to memory, have anything to do with the Vlink?
Vlink is to transform all system IOs' data from SB to NB, and According to VIA, the Vlink have a fix freq at 266Mhz. If fsb increase, Vlink should remain same otherwise ABit must do something wrong. Still no idea how it crush the agp.
maybe we can suggest Abit to lock the Vlink speed. If fsb get higher, it doesnt have impact on system.
I now can run all d3d testing even @ 285MHz
but you need take note one thing, my previous assumption maybe wrong, now SB is well cooled down, but the system hang is still there, I realize it is no more a heat problem because all my parts are in good temp. So I try to minimize the problem to NB and AGP bus link, I try to adjust the ration to 8:2:1 instead of the fixed(66Mhz 33Mhz), after that, everything is fine, it is working!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Now I am testing the 285Mhz(3-4-4-8) with 8:2:1 at 72Mhz:36Mhz, it is fine. Previously, dxdiag and 3d mark03 or AquaMarks all hang at the first second @ this bandwidth. now all of them can pass the test. Since my cpu can not run @285*9 well. I decide change to 275(2.5-4-4-8) 275*9=2475Mhz now I can pass all the 3D tests. Cheers! At least I make some progress, I now understand the lock apg.pci of Abit is not functioning well. So when we run 3D demanding program, the MB will maybe switch between other different ratio in quite a short time---the driver confused and hanged. I feel my poor card can still work @ AGP=72Mhz, so i believe your king card can surely run without any errors now. As i recommend, you can try 285*9 in your case since you have good PSU and Casing cooling. And the most important thing is do not trust the Abit Fixed Freq but mannuly set to 8:2:1.@285Mhz AGP=72 and PCI=36. Btw I disable the fast write so I do not know what will happen if I enable it. But one thing for sure, even before I disable of enable Fast write, I can not run the 3D testing @276+Mhz, but now I can.For 285Mhz*8, My machine is so far so good.
The SB cooling is nice in my machine, 3 blue lights when running, very steady and now the SB is very cool.
Wish you a good luck.
Now I am testing the 285Mhz(3-4-4-8) with 8:2:1 at 72Mhz:36Mhz, it is fine. Previously, dxdiag and 3d mark03 or AquaMarks all hang at the first second @ this bandwidth. now all of them can pass the test. Since my cpu can not run @285*9 well. I decide change to 275(2.5-4-4-8) 275*9=2475Mhz now I can pass all the 3D tests. Cheers! At least I make some progress, I now understand the lock apg.pci of Abit is not functioning well. So when we run 3D demanding program, the MB will maybe switch between other different ratio in quite a short time---the driver confused and hanged. I feel my poor card can still work @ AGP=72Mhz, so i believe your king card can surely run without any errors now. As i recommend, you can try 285*9 in your case since you have good PSU and Casing cooling. And the most important thing is do not trust the Abit Fixed Freq but mannuly set to 8:2:1.@285Mhz AGP=72 and PCI=36. Btw I disable the fast write so I do not know what will happen if I enable it. But one thing for sure, even before I disable of enable Fast write, I can not run the 3D testing @276+Mhz, but now I can.For 285Mhz*8, My machine is so far so good.
The SB cooling is nice in my machine, 3 blue lights when running, very steady and now the SB is very cool.
Wish you a good luck.
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