GazC
03-06-2005, 04:25 AM
Sorry mods, but I posted this here because I figured it'd be more likely that one of the big guns would see it and have experienced this problem before, so:
In the search of an ever higher number in 3Dmark '01. I took my PC out into the garage to take advantage of the cold air to get the water temps right down and to take advantage of lower ambient temps.
So I set it up and started trying to benchmark it. Now almost everytime I started the benchmark the PC would power down and would require the PSU to be reset before it powered up, as if OIP was kicking in. This never happened when the PC was indoors and I was wondering if the lower temps could be affecting something. I've already fired off an e-mail to PCP&C to see if there is a problem with the PSU. But I'm wondering if the graphics card could be a problem too (hopefully Viper John will see this, I could do with the help of an ATi god!).
The Graphics card is a Powercolor X800Pro Vivo which I successfully modded to 16 pipes and then Pencil modded, which I redid when I fitted water cooling (very good water cooling might I add).
The voltages on the card currently stand at GPU @ 1.9v, VDD @ 2.15v and VDDQ @ 2.2v. The card ran fine like this in doors at 687/642 with a lot of air flow over it caused by the suction from the radiator fans. I also reduced the OIP resistance to 26kohms.
ATi tool was indicating a temp of 6/9 degrees C when I was trying to bench, so it was very cold. I've not heard of ATi cards being adversley affected by temps like that before (especially when people cascade them without problems), but I'm out of ideas and cannot discount anything. If anyone has any ideas, please help.
In the search of an ever higher number in 3Dmark '01. I took my PC out into the garage to take advantage of the cold air to get the water temps right down and to take advantage of lower ambient temps.
So I set it up and started trying to benchmark it. Now almost everytime I started the benchmark the PC would power down and would require the PSU to be reset before it powered up, as if OIP was kicking in. This never happened when the PC was indoors and I was wondering if the lower temps could be affecting something. I've already fired off an e-mail to PCP&C to see if there is a problem with the PSU. But I'm wondering if the graphics card could be a problem too (hopefully Viper John will see this, I could do with the help of an ATi god!).
The Graphics card is a Powercolor X800Pro Vivo which I successfully modded to 16 pipes and then Pencil modded, which I redid when I fitted water cooling (very good water cooling might I add).
The voltages on the card currently stand at GPU @ 1.9v, VDD @ 2.15v and VDDQ @ 2.2v. The card ran fine like this in doors at 687/642 with a lot of air flow over it caused by the suction from the radiator fans. I also reduced the OIP resistance to 26kohms.
ATi tool was indicating a temp of 6/9 degrees C when I was trying to bench, so it was very cold. I've not heard of ATi cards being adversley affected by temps like that before (especially when people cascade them without problems), but I'm out of ideas and cannot discount anything. If anyone has any ideas, please help.