First of all you need an Intel P35 or NV680 chipset on your MOBO for the E6850. If you've got that, then definetly go for that over the Quad. The generic CPU speed is more, the potential to OC is more, its runs a LOT cooler and it has the 1333 FSB support.
For multi-tasking, a Q6600 is better. But if you will compare the two cpus on a single application such as gaming, the X6850 > Q6600. Simply because a clock speed of 3.0GHz is much faster than a clock speed of 2.4GHz.
Here is a suggestion, if you are getting a P35 board (which you definetly should be, if you aren't looking to SLI), get a cheap CPU now, and get the high-end next-gen penryn CPU when they get released since your motherboard can run it.
Next-gen quad-cores will be:
1) super efficient @ 45nm meaning they will be MUCH cooler and therefore very easy to overclock (todays C2Q are abit harder)
2) 1333 FSB (good for quad core)
3) slightly higher clock speeds with maximum reaching 3.33 GHz
4) MASSIVE L2 cache @ 12MB
To sum up:
If you're just gaming get the E6850, but if you're running video render software or Photoshop get the Q6600.
Last edited by buLLet_t00th (2007-07-22 10:01:34)