I actually do also have a dual x5650 system also . unfortunately it's an hp z800 without much any overclock options. it is of course faster than my i7-2600k when it comes to heavily threaded apps but still slower than my dual e5-2670v1..The best price/performance option for LGA1366 is the X56/W36 series. You can get a X5650 6 core processor for about $55 USD while being highly overclockable for example. That would make a good interim upgrade path while you wait for prices to drop further on the 2686 V3.