Overclock my Ram?

[markjs]

I am worried I'll blow it. I have 512MB of Crucial PC2100 that I can't really afford to lose but I wouldn't die if I did. I tried putting it at 266 with a bump in voltage but the machine won't boot. I am afraid to give it a second voltage boost. How much voltage can these safely take? Do they need heat spreaders? Right now I have it at 2.5v. it won't overclock at 2.63 and the last two steps are 2.77, and 2.90. So what should I try?

 

[Lyfer]

I wouldn't go more than 2.8v with crucial ram. I have a Crucial 512mb PC2100 that I got a whileback from hotdeals for $50, it will do 166mhz easily at stock but won't go past 178mhz with voltage at 2.75. It all depends on how old your ram is, my original 256mb ddr266 crucial from the tbird days will not go higher than 154mhz at any voltage.