Can't remember my first fail exactly.
do remember dumb moments when slapping together my first k6. Damn that thing was slow. Felt like my 386 was faster.
My most blatant fail comes from my first experience with volt modding. Now I had overclocked gpus for years and had used water, peltiers, and phase change by the time I first encountered my Built by ATI (read built by sapphire) x700pro.
But I had never volt modded a card and the x700pro's disapointing performance compared to the 6600gt's of the time was frusterating me.
I knew if I threw more clock speed at it I could compete.
So I decided to start with a pencil mod and see how it went. At 515MHZ a 21% overclock I was pretty happy and finally able to compete. Then after a round of torture tests screen goes blank, unable to get it back. "Damn... I just fried my first gpu, blatantly fried it too."
OH well RMA, get a new one from ATI. (no questions asked back then, loved the built by ati rma process)
Thinking it was the pencil mod I decided to go full vmod this time and got out eh soldering iron. Did a nice little job on the card and overclocked it to the max, this time hitting 535MHZ or a 26% overclock. Nice. This card was being water cooled on the core and had nice big ramsinks on the memory....but no additional vreg cooling.
lasted a month then again after a torture test of benches, screen goes blank, won't come back.
"Damn, I just fried another one!"
OH well RMA, get a new one from ATI.
This one wouldn't push as far as the last, getting stuck at 525MHZ or a 23.5% overclock. Throws more juice at it, still no vreg cooling, gets to 530MHZ, torture test..... screen goes blank, can't get it back.
You know at about this time you'd think the warranty center at ATI would be suspicious. Now sure I cleaned the cards up all nice and pretty, but 3 cards all had their vregs fail?
Nope, ATI sends me a new card.
At least by this time I had learned my lesson and left it alone. But it wasn't until my X1800XT that I figured out "oh yeah those thingies need cooled too"
so not my first fail, but certainly my biggest.