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OCAU News |
Les voltage-hacks his video card.. neato.
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Saturday, 13-May-2000 09:19:33 (GMT +10) - by Agg
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Hi Agg,
Have emailed you a couple of times before with my homegrown watercooling experiments (k6 2/450 @ 517 then my K7 500 @ 875). Everyone has been tweaking their core voltages for years to enhance their core speeds and this is nothing new. I have just experimented with raising the memory voltage on my Guillemot Banshee PCI. This card would overclock in very cool weather and with very large heatsinks but became ver flakey rapidly when working the card hard in 3D. I could regularly get the 100/100 board to 125/125 but would be flakey when thrashed. It was rock solid at 118/121 though (mem/core). I decided the card was old enough to start hacking around. I found it used in Infinity 8483 3 pin regulator to generate the 3.5v memory voltage. By going to the Infinity site and getting the spec sheet, I was able to change 1 (yes 1 ) 1mm surface mount resistor and raise the mem voltage from 3.5v to 3.75v. I didn't even bother to chech whether this voltage is used for the core. Now the card is rock solid after many hrs 3D at 125/125. The core is more soklid as well but I am not sure if this is because of the sharpened timing of the ram to the core, or if I have actually raised the core as well. Though this might be of interest as I have never seen info on the net about this (and I live in overclocking forums and sites). Obviously this particular banshee is a dog, as many of them overclock way past my specs absolutely standard. The principle seems valid and works in the real world.
CYA
Les Tutt
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