Build 553 working fine on:
Work:
Windows XP Professional SP3 x86
Intel Pentium D 945 3.4 Mhz
2GB Memory 667Mhz
Home:
Windows 7 Ultimate x86
AMD Athlon X2 4200+
6GB RAM 800hz
Only unmanaged memory configured (2.5GB).
I noticed great performance difference with and without eboostr.
With eboostr is very better.