As you're UK based, and you got the card November last year, and its an ATI built model, with 3.6ns Hynix Ram, I'm guessing its the original Supergrace Radeon 8500 batch sold on ebuyer.com? If so I have the same model. Nice card for the money at the time. I bought it because I was sure later batches, although they might end up cheaper, would not be as well made, or have such good Ram, once Supergrace started building them themselves (which is now true I understand).
I have also flashed to Retail bios and done the pencil trick. It runs fine at 275/275, and also at 275/290. I was wondering what voltages or other mods you may have done to make it run at 300+ as my card locks up in 3dMark or GLexcess above 290 memory and 280 core.
My other thought for my limitation factor was that it could be my PSU, which is not approved for my XP system (it was approved for the Duron system at the time I got it).
TBH 275/290 is still very good from 250/250 (at no extra mod 'cost') but seems low compared to what most people are claiming for the Supergrace card (300/300 being minimum almost). But then I wonder how thoroughly people test before making such claims
I have also flashed to Retail bios and done the pencil trick. It runs fine at 275/275, and also at 275/290. I was wondering what voltages or other mods you may have done to make it run at 300+ as my card locks up in 3dMark or GLexcess above 290 memory and 280 core.
My other thought for my limitation factor was that it could be my PSU, which is not approved for my XP system (it was approved for the Duron system at the time I got it).
TBH 275/290 is still very good from 250/250 (at no extra mod 'cost') but seems low compared to what most people are claiming for the Supergrace card (300/300 being minimum almost). But then I wonder how thoroughly people test before making such claims