Well, Denny came to pick up his single stage, (or is it Andres?)
I requested him to bring QX9650 with him so we can do some quick load testing session He has another CPU he can test out once he gets back at home but I am not sure if he will have time to do so to match and figure out what the trend of load is.
Basically the unit is 210-220w tuned unit (it can go to 230w around 19c-20c ambient but I typically give myself a little room due to different ambient condition possible with units I make). Since last post regarding 2 evaporator comparison under Q6600 G0, I've changed the unit so it won't be reading as cold of temperature under less load
Basically skipping all steps, we went to meat of it... started around 1.6v and than decided to kick i up to max volt under Asus P5K-E since it wasn't stressing cooler much at all. Bios setup 1.7v reading from CPU-Z around 1.664v.
I've recorded the temperature of evap under load tester last night in preparation to know exactly what load I am subjecting it to (well I think it was about 1-2c cooler in the place today) and here it is.


Basiaclly, based on what I wrote down last night and comparing, this is only about 175w+/-10w!!! Unlike the Q6600 G0 which at same voltage and about 400mhz less dumping about 220w+/-10w.
I was actually hoping to see closer to 5ghz number but that wasn't the case... -__- (45nm and being unlocked multi chip and all...) This is pretty damned good news as I can see quad retail product probably going another 200-400mhz on default speed as product matures and overclock might stop around 200w-210w range which most of my product will cover quite easily (other than really early one tuned optimal around 150w and up to 180w..... even this might have some fun with reasonable overclock :P)
keep in mind, that voltage alone is not what I would use for daily to begin with and also makes me wonder why there was no major default v-core drop on this 45nm transistion from 65nm... This makes me wonder if Intel is having not so good yield rate quite up yet and artificially inflating default voltage to compensate for it for time being.
Anyways, it seems to be quite good news to me as cost of tuning for 250w was getting too much (component cost, tuning involvements, increase in noise level, general loss on lower wattage temperature, etc). I guess I am back down to 220-230w tuning from this point on which will work quite well with current quad g0 as well as some room for still unreleased 45nm quad
Of course, R&D won't stop for more load as I should prepare my self for 8 core as well...