How would they get a Q6850(or even a Q6600) down to 65w exactly?
Q6600 and Q6700 are FSB 1066. Both have 8MB L2 cache.
Q9300 and Q9400 are FSB 1333. Both have 6MB L2 cache.
A Q6x00 would outperform a Q9x00 at the same clock. Intel had to bring out the Q9x50 to beat the Q6x00 series.
The Q9xxx is not compatible with older s775 boards that only do FSB 1066. If you have an older core2quad board then there is no upgrade path. And that's the point. Intel no longer provides LOYAL CUSTOMERS with an upgrade path. The only option is to get a whole new system, ie new chipset and new CPU. Whereas in the past, Intel made sure there WAS an upgrade path; they released better CPUs with higher clocks, SSE enhancements, HT, bigger L2 or L3 cache AT THE SAME FSB. And remember the whole pentium OVERDRIVE series?
The higher FSB on the Q9300 and Q9400 makes up for the lower L2. See
here. Despite the lower L2, the Q9000 series outperforms the Q6000 series, mainly due to architectual improvements and the higher FSB.
I don't think there are many s775 boards that support the Q6000 series, but not the Q9000 series. And if they are that old, then chances are the customer has gotten their upgrades out of it. Even then, if you pick the right motherboard, that isn't really an issue. My P5B, which is well over 2 years old, started with a Celeron D in it, and still supports the Q9000 series. How long do you expect intel to continue to provide upgrade paths? Should they still keep pumping out Socket 478 P4's just so people with ancient boards can still have an upgrade path?
Be real, eventually, they are just going to have to move on. The few people that have ancient hardware are going to have to be left behind, Intel can't be blaimed for this. They chose to have the old hardware, and they chose to buy cheap when they bought it.
The few boards I know of that support the Q6600 but not the Q9000 series, support 1333FSB just fine, they just don't support the 45nm quads. These are nVidia's 600 series boards, which Intel can hardly be to blaim for nVidia's poor chipsets not supporting 45nm quads(even though they support 45nm duals just fine). What board are you talking about anyway, that is 1066FSB only, but supports quad core processors?