Anyways, DQ6 and DS3 are both pretty nice boards, but it also depends on if you're looking for maximum OC'ing or what...
The Gigabyte GA-965P-DS3 is one of the more value priced offerings in our mid-range lineup with a street price around $145. Unlike the other boards in our roundup it does not use the Intel ICH8R which means two additional SATA ports and RAID capabilities come from the JMicron JMB363 chipset that also serves as the IDE controller. The DS3 also does not come with Firewire capability which is a mistake in our opinion.
No Intel raid on the DS3... don't know if it matters, but it seperates it from some of the other 965 boards out there.
We were able to reach a final setting of 7x455FSB resulting in a clock speed of 3185MHz. This board is fully capable of 500FSB rates with the correct memory installed. We still have an issue with the D9 Micron based 1GB modules not wanting to go above the 460FSB range in a stable manner. This issue will be fixed in an upcoming BIOS release and we will retest at that time. We did not have any issues reaching 510FSB with a set of D9 based 512MB modules in testing.
And the OC'ing here is mediocre... with some memory issues... all from this article:
http://www.anandtech.com/mb/showdoc.aspx?i=2860
DQ6... I think is a bit overpriced for what it does, and it's OC'ing is above average, but nothing really spectacular either. Tom's did an article about it a while back and found it wanting.
My recommendation, if at all possible, try to find a P5B-E with the revision 1.02G...
We were able to reach a final setting of 7x490FSB with our 1.01G board with a clock speed of 3430MHz. In previous testing with different memory this board reached 7x515MHz. Our FSB results were limited by the maximum memory voltage setting at 2.1V. Our memory voltages were set higher than normal for our CPU but this is due to the Vdroop on both boards being around .03~.05V during testing.
Our 1.02G board faired better as we could increase our memory voltage to 2.35V in order to reach the final stable setting of 7x520FSB resulting in a clock speed of 3640MHz. Both ASUS boards provided the best memory timings during overclocking although we noticed certain latency settings like tRFC were very relaxed when compared to other boardsAs forum master, I'd expect you to be able to dig through the hundreds of posts over that combo since it's pretty standard =P...
Hope this helps.
Edit: I want to add, you might look into the S3 if budget is a factor. Same board with differen't caps... but performance is about the same either way.