Batch "C" i7 920 DO Phase change overclock

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Ok, a new thread for my new build -

Brand new batch "C" i7 920 DO CPU Batch - 3917C045 Pack date - 09/22/09
Second hand ASUS P6T motherboard (yes the one form "the" other thread :p )
6Gb GSKill Trident DDR3 2Ghz 9/9/9/24 @1.6
Intel X25M80

Ok just started to put this together - straight in at 3.82Ghz (std air cooling - not primed yet). I'm going to see where cooling becomes the problem before having another bash with my Phase change cooling.:p

Looking for advice on P6T settings as the board is new to me, anyone with a similar setup, please let me know :confused:
 
Heres what im running for 4ghz on my p6t dlx v2.

Photo-0095.jpg

Photo-0096.jpg


Though im running 1600 mhz cas 7 ocz reaper ram. Uncore clock should be 2 x the memory speed or 2 x + 1.
 
;) Cheers Setter (Diamond) It gives me somewhere to start, just managed 4Ghz no probs but a bit flakey when in windows (more juice :eek: )
 
What sort of vcore did you use for 4ghz, also the qpi/vtt often needs a bit of tweaking, upto 3.6ghz i was fine on 1.2500, had to push it to 1.300 for 3.8 and 4ghz.
 
;)
What sort of vcore did you use for 4ghz, also the qpi/vtt often needs a bit of tweaking, upto 3.6ghz i was fine on 1.2500, had to push it to 1.300 for 3.8 and 4ghz.

1.275, but proberly go through it all again (Just realised I need to update bios, as its a different version, or is it because you have the "posh" version of the board:D ).

Very early days, I'm excited to see what this new batch is all about ;)
 
Not sure of the bios on a p6t, but id have thought theyd have been pretty standard across the range?, still on the shipped bios here, though i may flash to a revision from the dlx v1 as apparenly its more stable and does away with turbo throttling, (something the dlx v2 is known for). 1.2750 is nice, if you can ge it lower thats even better, look forward to seeing how you get on.:)
 
Just found I have a problem with one of my 3 sticks of DDR3, its not being recognised in any of the sockets (looks like an RMA - its GSkill so shouldn't be an issue). Could explain my flakey OC's.
I take it there is no issues with this board running dual channel ?? (just for now ?).
 
Just check mate that when you do rma the ram, they may ask for the entire kit to be sent back.
 
yeah, not a problem. I'll take the matched set all in by hand and change it there and then (its never been a problem as long as some more is in stock). I wouldn't want to start mix and matching sets as you start asking for trouble.
 
At least if your taking it in yourself it will save on downtime as opposed to having to mail it off, pity all the same though that you got a faulty stick.
 
I ran my system with only 2 sticks of RAM for a couple of months when I first built it, and it was fine.

However, like setter has already mentioned, you will probably be asked to return the entire kit, and not just the one stick that is faulty.
 
Why is the ASUS website so slow, nearly 3 hours for 315Mb Express gate download (funny old thing the one one the DVD is no good for Win7 64).

Just getting all the software sorted ready for some clocking :)

So with the minor niggle with the Memory, I should be off in order to see what this little CPU can do (I hang fire on the Memory bandwith benchies just for now).

Whats the best way to post piccies on here now (I don't really want to use my home server to host them), reminds me - the last time I posted a piccie on this forum it was before the Refresh and updated site (reading the thread on Longest members ! :eek: I'm getting old! ).
 
Asus website is terrible, most of the utilities/drivers that came with my board were no use in win7 either. For image hosting i like to use .

www.photobucket.com

Much quicker to use than imageshack. For testing overclocks id reccomend linX.
 
Asus website is terrible, most of the utilities/drivers that came with my board were no use in win7 either. For image hosting i like to use .

www.photobucket.com

Much quicker to use than imageshack. For testing overclocks id reccomend linX.

Sorry off topic for a little (all with the intention of enhancing the original thread with Piccies), I will get back on topic - Setter, many thanks, I have now set up an account with PhotoBucket and put a couple of piccies in a folder and have the URL to the folder as displayed in Photobucket, QQQ How do I insert the photo into the thread (I have tried pasting the URL, but obviously that just shows the URL) do I need to do something to the URL ? Many thanks.:confused:

Once I have the above sorted I can post some piccies as the OC progresses ( I can not seem to find any FAQ#s on this one on the forum ??):confused:
 
Ok - initial OC of 4.158Ghz (not prime stable yet)

Obviously not yet had the time to Test stability however results are encouraging so far -

198 x 21 = 4.158Ghz Vcpu 1.275 (needs better cooling) but a good start :D

I think either my QPI Link Data rate or Memory is the bottleneck right now.
 
Very nice so far mate, when you get your ram sorted things can only get better, concerning the qpi link setting, as long as you stay below 8000mts youll be fine, the other setting to look out for is the uncore clock (uclk), this should be 2x your memory speed or 2xmemory speed +1, in my case ram frequency is 1547mhz, x2 = 3094, though mine goes to 3095 (hence the +1). As for photobucket, wen you upload a screenshot to your account you want to use the "img" tags for posting on a forum.
 
Right - Finally finished rebuilding my setup with my VAPOLS.

I think I could manage a whole thread just on adapting my VapoLS for use with the i7 Motherboard (Perhaps at a later date) as when I was thinking about it nobody had actual experience (although some were very helpful with similar setups).
1st problem with 1366 is the socket is bigger, so the clamshell (std stk 775) would not provide an air tight seal ALL the way around, If I tried a bigger clamshell there would not be enough room all the way around anyway (capacitors in the way-P6T with 775 mounting holes). Also on the rear of the motherboard where I wanted to put the VapoLS backplate with a heater (to stop condensation forming) had a "cool plate" in the way which turned out to be the backplate for the CPU 1366 retaining socket !!! Easy solution in the end (with its own problems mind) - I removed the complete CPU retaining bracket along with the Cool plate, obviously this makes the CPU socket a little fragile and does not hold the CPU in place (risk of bending Socket pins if not carefull), my workaround this is to simply install my VapoLS while the whole system is horizontal, as the torque setting of the 4 springs on the clamshell are more than enough to retain the cpu in place not too much mind.

After many horror stories that a standard VapoLS is no match for an i7 with HT on at 4Ghz I gave the VapoLS a chance and gave it a bit of an early spring clean, at least so if it failed then I'd know its not because of a bit of fluff ! (I can remember similar stories about the VapoLS not being able to cope with a 775 Quad - My Q6600 has been running for nearly 3 years with absolutly no problems, never going more than 10Deg avove idle neg temps).

OK - the interesting bit (perhaps ;-) ) Again still early days, but at least I can now say prime stable at 4.05Ghz (193x21 1.272v CPU), I currently have a slight memory problem (one of my trichannel 2Ghz DDR3 sticks is not being recognised) but I should be able to get round this for the time being. My core temps (according to Coretemp 0.99.5) never reached above 9 Degrees (9* / 1* / 7* / -2* max) all cores sit nicely at minus 7 degrees when idle. VapoLS siting happy at around -34Deg C when on 100% load (8 threads).

SiSandra reports 98.60GIPS Drystone and 83.78GFLOPS Whetstone, more tests to follow.

Now, Small steps but I have not had to boost Vcpu anymore just yet, going to increase slowly and see where I need some more juice

So thats the first test for starters, now lets see what this really can do ! :D

Edit - Now 4.2Ghz (obvious 200 x 21 no other changes) Temps stable (12*/5*/10*/1* Max) (10*/3*/8*/1* settled now 20min). My mem may need some changes soon.
 
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Well done mate. How much headroom do you think you have?

Not sure really, so far the temps are not pushing my Vapo too hard, I think either the Memory or QPI will top out first. At 4.3Ghz right now and I'm going to run that until I can RMA my faulty stick of DDR3 then I'll see how much further she wants to go. ;)
 
Well done Carlos. It looks like your doing fine with the Vapo so far.
At some point though, you will reach a tipping point, where the Vapo won't be able to hold the temps. My SS starts to loose control once the temps start getting over +40c. But to compare your Vapo to mine, at 4.2ghz, mine is still well below 0c under full load where as yours is at 10/3/8/1.

I would have thought that if your ram will do it, then you could expect somewhere between 4.4ghz and 4.5ghz. But you really should give it a good run with Prime Blend or 20 rounds of Linx before moving the clock upwards.
 
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