SOURCE:
AnandTech - The Sandy Bridge Preview
@chang87
H61 vs. H67 wala difference sa performance sa processor but naa difference sa imo entire system. mainly on the number of USB 2.0 support, Sata3 support, RAID and number of PCIe Lanes support, as shown in the pic above
Meaning sa mga prefix:
H = CPU integrated graphics
supported
P = CPU integrated graphics
not supported
So if you compare Hxx chipset vs. Pxx chipset... the Hxx chipset will allocate memory from the RAM to be used for the CPU integrated graphics while the Pxx chipset will not allocate any RAM memory. In short ma maximize ang RAM to be used for the entire system except the integrated graphics.
So if you are using a Sandy Bridge procs and want to use a discrete VC. It is better off buying a P6x chipset to maximize the RAM.
just my opinion...