I have a 551 that supports EM64T (x86-64). According to CPU-Z 1.28 it is an Engineering Sample.
This link gives more info on the 5x1 and 6x1 series P4s.
I don't want to spend a lot of money on water cooling, as I'm short on cash right now, plus I don't overclock much, which is why this ES chip (if it is an ES) would not be advantageous to me.
And no, I don't know how much an ES chip goes for.
I just found out my 3.4GHz CPU is an ES. I hope that's not affecting the temps. I know Engineering Samples are highly sought after by Overclockers for their unlocked multipliers. Mine has 14-17 unlocked. Does anyone know how much a 3.4GHz ES would run for? (Slighly used ofcourse)
First off, here are my PC specs:
Intel P4 550 3.4GHz
Asus P5GDC-Deluxe Mobo
Asus EAX600TX/TD Video Card
1x 120mm intake fan, 1x 120mm exhaust fan
WD 36GB Raptor SATA Boot Drive
WD 250GB SATA Storage Drive
Coolmax CR-450B 450W PSU
Zalman CNPS7000B-Cu HSF w/ LGA775 adapter clip
Okay...