brisen
08-04-2006, 05:41 AM
Hi,
I have a problem with my "old" rig, which I want to bring back to life. It consists of:
IC7-Max3
2.4C SL6Z3
2 x 512 OCZ EL DDR PC-3500 Dual Channel Platinum Lim. Ed. => Winbond BH-5
OCZ PowerStream 600W
Radeon 9800 non-Pro @ Pro
I have done the VTT-fix according to http://www.cmia.co.uk/Vtt/. As the mobo was lacking the MC64 from the manufacturer, I'm assuming the VDIMM should be ok (removing the MC64 is the VDIMM mod, right?).
But when I crank the VDIMM up to 2.9V (220 MHz @ 2-2-2-6, 1:1 ratio), it won't boot or even post. After resetting and shutting it down some times it comes back to life, When I enter the bios, the VDIMM is still set at 2.9V, but the bios is only reading ~2.6V. No wonder it wouldn't post/boot!!!
I have checked the procedure at http://www.cmia.co.uk/Vtt/ several times and found no deviations in my work. The trace on the back of the mobo has been cut correctly (I'll recheck!). After attaching and soldering the circuit to the board, there's no short between VBT_Actual and ground (ok according to the procedure). From my initial testing (2.5V to 2.8V) the VTT seems to track just fine.
Since I have done the VTT-fix and the VDIMM mod is performed from Abit's side, why isn't the VDIMM acting correctly at 2.9V and above (tried at 3.0V, 225 MHz @ 2-2-2-6)? Perhaps I have misunderstood what the VDIMM mod consists of (according to HiPro's guide, the R50 resistor must be replaced with a trimmer)?
Could somebody give me a clue to what's wrong?
TIA
I have a problem with my "old" rig, which I want to bring back to life. It consists of:
IC7-Max3
2.4C SL6Z3
2 x 512 OCZ EL DDR PC-3500 Dual Channel Platinum Lim. Ed. => Winbond BH-5
OCZ PowerStream 600W
Radeon 9800 non-Pro @ Pro
I have done the VTT-fix according to http://www.cmia.co.uk/Vtt/. As the mobo was lacking the MC64 from the manufacturer, I'm assuming the VDIMM should be ok (removing the MC64 is the VDIMM mod, right?).
But when I crank the VDIMM up to 2.9V (220 MHz @ 2-2-2-6, 1:1 ratio), it won't boot or even post. After resetting and shutting it down some times it comes back to life, When I enter the bios, the VDIMM is still set at 2.9V, but the bios is only reading ~2.6V. No wonder it wouldn't post/boot!!!
I have checked the procedure at http://www.cmia.co.uk/Vtt/ several times and found no deviations in my work. The trace on the back of the mobo has been cut correctly (I'll recheck!). After attaching and soldering the circuit to the board, there's no short between VBT_Actual and ground (ok according to the procedure). From my initial testing (2.5V to 2.8V) the VTT seems to track just fine.
Since I have done the VTT-fix and the VDIMM mod is performed from Abit's side, why isn't the VDIMM acting correctly at 2.9V and above (tried at 3.0V, 225 MHz @ 2-2-2-6)? Perhaps I have misunderstood what the VDIMM mod consists of (according to HiPro's guide, the R50 resistor must be replaced with a trimmer)?
Could somebody give me a clue to what's wrong?
TIA