Core i7 overclocking raise mult, BClock, or Both?

[NickN]

Jim right now the clockers are still working out the variables around these slugs and what they will and will not allow

The boards and BIOSs are still going through their growing pains too

you are playing with cutting edge hardware which is still in the dev phase AND in the phase for reverse engineering the ability out of it by the pros.

Do not expect me or anyone else who is a responsible engineer to assist you doing things only those who know what they are doing and are willing to lose their investment would do.



I am going to be quite frank.. and this IS a woodshed statement,

[raptorx]

NIck, I wasn't trying to put words into your mouth or twist what you said.

[Slotback]

[quote]Well, I can't get my system stable at anything beyond 4.0GHz @ 1.4 vcore and 1.375 vQPI.

[raptorx]

[quote][quote]Well, I can't get my system stable at anything beyond 4.0GHz @ 1.4 vcore and 1.375 vQPI.

[NickN]

[quote]NIck, I wasn't trying to put words into your mouth or twist what you said.

[NickN]

One other thing too...

Look at the link above and check the THERMAL SPECIFICATION

its blank

Intel, although has hinted.. never posted the safe thermal limit for the i7 9x series so be quite aware that what has been posted on the net and in the clocking fourms is in fact a GUESS @ 100c and a top end of 80c for proper operation


There is no science in this at this point... we are all functioning on reverse engineering testing and trial



http://download.intel.com/design/proces ... 320834.pdf


look at page 79

@ 130w that places the max CASE temp at 67.9c

The case is NOT the internal diode temp and that is typically 10c higher (average)

which places the ESTIMATED or GUESSED TJMAX at between 95-105c

we took 100 to hit both

The safe temps that have been posted are purely an educated GUESS and we may ALL be wrong

[raptorx]

I really appreciate it Nick.  

I put a box around my tweaking to try to keep things safe.  I say I get frustrated when I can't breach certain values and still stay within that box.  Like that 1.4v vcore.  But that's a good thing because it will keep me from allowing myself to "go for it".  I get discouraged instead, but that's a result of having to accept keeping it safe.  The system will appreaciate that more than I ever will.

Thanks for being patient and understanding and keeping me informed.  When I came into overclocking the Core2 was well known and there was time-tested data on the operational limits.  It was easy to know better what to push and how high to push it.

Now it's new for EVERYBODY and it's hard to reign in my enthusiasm.  

-Jim

[NickN]

you gotta give the platform some time.. by the time the Q9650 was out in full swing on the market we already knew almost 5 months before how that was going to unfold in tweaking and limits based on the established tech

there is no established tech for any of this in i7


Look at page 23 in that link above

Processor I/O supply voltage for DDR3:  1.575  and you are using 1.65..   we know that is a safe limit because Intel spilled the beans to the motherboad companies.. what we DONT know is all the safe limits in that spec sheet but are working them out.

[raptorx]

Well I tested my system with Linpack today.

[NickN]

nope

them's some dang nice numbers!

Most would kill to get that...

You do get what you pay for    :)