How much does Hyper Threading help DC? (contemplating upgrade)

[Assimilator1]

Voltage? I assume you mean power? 😉
But yea it's odd that the 2 programs use virtually the same power yet have different temps 😕

I've finally fitted the new cooler today (a Thermalright Ultra 120 extreme), it's early days as the super thick ICD7 I'm using won't have fully spread out yet, but so far with ambient temps of 22C the CPU's peaking at 61C but mostly at 60C so a nice improvement 🙂. Curiously the mbrd temp has dropped 3-4C too, I guess less heat's soaking through the mbrd??
Oh & unless CPU temps drop quite a bit more I won't be overclocking it any higher.

[update]
And I've just won a Q9550 for £65 🙂 (well yesterday actually but I've only just seen it), there's another 1 going & bizarrely it's already at £86! wth?? I swear I'll never understand ebay! lol.

 

[biodoc]

And I've just won a Q9550 for £65 (well yesterday actually but I've only just seen it), there's another 1 going & bizarrely it's already at £86! wth?? I swear I'll never understand ebay! lol.

Enjoy the new chip, AS1! 🙂

 

[Assimilator1]

So far at 3.54 GHz which I think I've finally got stable 🙂, & so far at 16hrs on OCCT so I'm going to count that as good & see if I can go higher. It's been much trickier to o/c this CPU than the Q6600!
Seeing as vcore is only at 1.3125v setting atm & OCCT large data set temps 58-60C, I think theirs room to go higher 🙂

Had to do a lot of reading up about various voltages for 45nm CPU & P45 chipset & what really are the safe limits for long term reliability (CPU PLL, FSB term/VTT, NBv, vcore).
Incase you're interested, Intel say max NBv 1.21v, VTT FSB 1.32v, vcore 1.3625v, & CPU PLL 1.575v. Again, not absolute max but long term safe max. From data sheets for '4 chipset family' & Core 2 Q9x/8x00 series.

Others (review sites, o/cing guides) say NBv ~1.25-1.3v, VTT FSB ~1.35+v, CPU PLL 1.6-1.65v, max GTL ref 61-63%, vcore 1.4v, an example http://www.bit-tech.net/news/hardware/2008/05/12/will-you-overclock-intel-s-p45/1 http://www.anandtech.com/show/3381 , but who knows if they're thinking about long term reliability (I don't mean just bit-tech & AT).

I didn't have to go into all this before (bar vcore) as my old Q6600 was temperature limited anyway & I only bumped up the other voltages slightly.

 

[Sunny129]

glad to see you're making progress :thumbsup:

 

[Assimilator1]

Establishing what FSB my mbrd can do atm, so far with short tests I've got it upto 435 MHz 🙂, RAM is now running at 1091 MHz which is 9MHz beyond which I've tested it for.
Another 5MHz up on FSB would probably mean I'd need to lower the RAM speed to use it, & unless I can drop the RAM timings that won't be worth it.

Just for the record I got the Q9550 to 3.6 GHz (1.3375v), 424 MHz FSB, tRD8, 4GB DDR2 1066 @1063 MHz