IOQD is too low. Performance will suffer.

[piku]

SiSoft Sandra is telling me this. The problem is what exactly is it, and how do I correct it? Any help would be much appreciated.

 

[piku]

Nobody knows?

 

[pm]

IOQD is "in order queue depth" and it refers to how many entries the buffer within the chipset's memory controller can contain for sequential accesses to the same open page in memory. Every chipset has a different in-order queue depth. Previous generations were 3-4, 8 entries was common a couple of years ago, and recent chipsets are in the 12-14 range (i850, i845, P4X266). The BIOS often lets you set this to a value, so look for IOQD in the BIOS usually under "chipset settings" or "memory settings". If it's not in there, then odds are that the queue depth was reduced for some funky stability reason by the manufacturer. HP tends to do this with their machines in my experience. In this case, you probably should give up since we are only talking a few percent reduction in performance, but if you really want to eek out every last drop then pick up H.Oda's WCPREDIT and edit the configuration register in the chipset manually.

 

[piku]

Ah, thanks alot for the info.