Crucial said:"Memory spec terms
Unbuffered — Most PCs and workstations use unbuffered memory which is faster than registered memory.
Registered/Buffered — Registered or buffered modules delay all information transferred to the module by one clock cycle. This type of memory is primarily used in servers.
Fully buffered — Designed for next-generation servers, features an advanced memory buffer.
internet specs said:Memory
Internal memory 8192 MB
Internal memory type DDR3
Memory clock speed 1333 MHz
ECC
Memory layout 1 x 8192 MB
Memory form factor 240-pin DIMM
CAS latency 9
Registered
Memory bus 72 bit
Lead plating Gold
Module configuration 1024M X 72
Memory type DDR3
Memory ranking Dual Rank
Energy management
Memory voltage 1.5 V
Technical details
Chips organisation X4
Form factor 240-pin DIMM
Bus clock rate 1333 MHz
Error indication ECC
Rack mounting 240-pin DIMM
Warranty Lifetime
Other features
Compatibility 500205-071 (HP); 500662-B21 (HP); 516423-B21 (HP); 516423-S21 (HP); 593913-B21 (HP); FX622AA (HP)
Vastre,
Did you buy KTH-PL313E/8G ?
The 'E' from what I can work out means its NOT registered, and also the RAM is dual rank according to the internets.
This is getting well confusing, as the Quad Rank is the stuff thats supposed to work but doesnt!