An article at ExtremeTech states that "the QX6700...will be around for a while, but most users won't buy one in lieu of the new CPUs." The comparable "new CPU" is the Core 2 Duo Quad Q6700, which the writer described as "really a multiplier-locked QX6700." So if that's all it is, why shouldn't I buy the older "Extreme" QX6700 (for roughly the same price)? What's better about the new chip? I do NOT overclock, so the unlocked multiplier is not a factor in my purchase decision. Which should I buy?
I had heard that on July 22nd, the QX6700 would be getting a huge price cut, to around $520. In other words, nearly exactly the same price as the Q6700. If that's true, and the price is the same, which card is preferable? I will certainly get the Q6700 if the QX6700 is more, but if the price is the same, I'm not sure which is better. I've heard the Q6700 has a lower operating temperature but don't know whether that is true.
As I understand it, because of the newer stepping The Q6700 uses less power and creates less heat. The Q6700 is rated at only 95 Watts
Q6700 95 watts
QX6700 130 watts
That alone is reason enough for me to prefer the Q6700 over the older chip. I don't care at all about the unlocked multiplyer.
The QX6700 chip is generally more expensive and all you really get is a black sticker and braging rights. Big deal!
They really are the same chip. Somewhere along the way Intel must have decided that with the release of the Qx6800 that the Qx6700 wasn't really "Extreme" any more but they didn't want to stop producing this fine chip which still had market. Thus, they changed it's name to the Q6700. All my guesses no basis what so ever to that but I am certain that all Q6700 chips have GO stepping over the B3 stepping used in the Qx6700. I really don't know if they ever released any updated Qx6700 chips which featured the newer GO stepping.