OC to pc4200 and beyond?

I got my pc3700 to 534mhz..
I'm going to try and go for 550mhz soon!
wouldn't that be something, pc3700 running @ pc4400?
if someone could OC pc2100 to 414mhz then maybe i could get mine to 600mhz..wow but i doubt i could get that far, but if i could i would get a OC of 3.8ghz or so w/ 1:1 ratio
would that be called pc4800?
do you think it can be done
my current load temp is 41C
It went up only 2c when i oc'd to 3.5ghz