Intel Core 2 DUO

[dweimer]

I am looking at replacing an old mini tower PC running with a 900Watt 
power supply (simply old parts left over from PC upgrades) with a small 
form factor PC to run backups to eSATA with Bacula.  Main goal is to cut 
down on the UPS load, hate having that beast of a power supply running 
24/7 to only be used about 10 hours a week.  I have been searching eBay, 
and there are a ton of Dell and HP small form factor PCs with the Intel 
core 2 DUO CPUs a few of which have 4G ram, for cheap.  Assuming I can 
find one that I can put two internal drives in to run zfs mirror for 
FreeBSD install, does anyone have any experience on performance, will 
the Intel core 2 DUO, be able to handle GELI and ZFS on the eSATA disk 
with decent throughput?

Currently running with an old AMD Athlon(tm) 7750 Dual-Core Processor 
(2700.06-MHz K8-class CPU), which keeps up just fine, eSATA disk drive 
is the slowest part on the current system.

-- 
Thanks,
    Dean E. Weimer
    http://www.dweimer.net/