help achieving 4GHZ, i7 920 D0

[youdsy]

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currently stable with the above.


QPI/VTT is currently at 1.36. needs at least 1.48 to get into windows with 4GHZ

what other settings can i tweak?

plus anyone got an example for looser timings for ram at its native 9-9-9-24??
thanks.

 

[wazza300]

9-9-9-28? or 10-10-10-30? if you had only 6gb you wouldnt need half as much qpi/vtt voltage

 

[matty114]

QPI/VTT is currently at 1.36. needs at least 1.48 to get into windows with 4GHZ

what other settings can i tweak?

Less VTT and more Vcore?

 

[wazza300]

vtt is about right with 12gb,can use upto 1.5v,set uncore freq to twice your memory multiplier

 

[setter]

Set the ram to 2T command rate, up vcore a bit. Qpi may indeed have to be around the 1.35 area with 12gb, though luckily my own 12gb kit runs at the same qpi as my old 6gb kit, albeit it had tighter timings of 7-7-7-24 compared to 9-9-9-27 on my current kit.

 

[youdsy]

running prime as we speak, pretty god so far, timings set to 10-10-10-30 command rate 2T, uncore x16. actually dropped qpi down to 1.34, Vcore is up to 1.29V.

go for 4.2 if 4ghz is stable

cheers guys, ill let you know if shes good

 

[Paddy McGinty]

Running 4.4 here on a 930 with HT on,also stable in Prime,Linx Occt and Ibt.

 

[youdsy]

Running 4.4 here on a 930 with HT on,also stable in Prime,Linx Occt and Ibt.

what cooling set-up blood?

can get 4.11 stable with 1.32 qpi, 1.34 Vcore. my corsair H50 isn't up to cooling that though. once of the cores hit 91C lol.

 

[setter]

Im guessing watercooling? Nice clock, most ive got so far on my 920 is 4.2ghz, 3.6 on my 930.

 

[wazza300]

your at your limit with 4.2ghz and air imo,any higher you need a good watercooling system,i did boot into windows and run cinebench at 4.5ghz but no way on earth i could stress test at that clock,temps would have been 100c plus

 

[setter]

Was that on air wazza? Iirc, Bulldog147 had a 920 at 4.3/4 i think on a h50 then a d14. Changed my cooler from a prolimatech super mega to an alpenfohn k2, dropped about 4-5c on load temps. Saying that though, 4.2 is more than i need. Hence im back at 4ghz, 20x200. Gonna see how far the 930 will go now, seems to run a wee bit cooler than my 920 did at 3.6 in the same case and cooler.

 

[bifday2k]

Setter, Bulldog had a very good chip which needed less volts then most, think his 4ghz volts where even under 1.25v, where the average is closer to 1.3v.

Mine personally does 4ghz with 1.275v(bios) for both vcore/qpi, did get that lower but it needed more tweaking, so just left it at the values i knew where rock solid (i got lazy).
So it really all depends on if you got a good cpu or a stinker, some go low on volts others u need slightly more then average.

@youdsy
Is your 12GB in 3 sticks or 6 sticks? As that will make a big difference to what volts u will need, also as the memory controller is on the cpu, its pot luck if you get a good one or bad one. Some will clock and clock and clock, others reach a limit.

 

[youdsy]

Setter, Bulldog had a very good chip which needed less volts then most, think his 4ghz volts where even under 1.25v, where the average is closer to 1.3v.

Mine personally does 4ghz with 1.275v(bios) for both vcore/qpi, did get that lower but it needed more tweaking, so just left it at the values i knew where rock solid (i got lazy).
So it really all depends on if you got a good cpu or a stinker, some go low on volts others u need slightly more then average.

@youdsy
Is your 12GB in 3 sticks or 6 sticks? As that will make a big difference to what volts u will need, also as the memory controller is on the cpu, its pot luck if you get a good one or bad one. Some will clock and clock and clock, others reach a limit.

3x4GB corsair vengance

 

[wazza300]

Was that on air wazza? Iirc, Bulldog147 had a 920 at 4.3/4 i think on a h50 then a d14. Changed my cooler from a prolimatech super mega to an alpenfohn k2, dropped about 4-5c on load temps. Saying that though, 4.2 is more than i need. Hence im back at 4ghz, 20x200. Gonna see how far the 930 will go now, seems to run a wee bit cooler than my 920 did at 3.6 in the same case and cooler.

yeah 4.5ghz on air but temps were too high to do propper stress testing,max i can go with thermolab baram heatsink is 4.2ghz and 79c max temps

 

[bifday2k]

3x4GB corsair vengance

Mmm you really should'nt need that much qpi then, unless its a really poor memory controller.

Try using a multi of 20, and using a 200 base clock to keep everything even. Put memory to its lowest multi (total) depending on board used.. set uncore to double the value the memory is set to at its lowest multi.

Stick qpi/vcore both to 1.3v, memory at 1.65v, everything else left on auto. See if that will boot at all. If not slowly raise Qpi up one notch and repeat.

 

[St0rmer66]

Mmm you really should'nt need that much qpi then, unless its a really poor memory controller.

Try using a multi of 20, and using a 200 base clock to keep everything even. Put memory to its lowest multi (total) depending on board used.. set uncore to double the value the memory is set to at its lowest multi.

Stick qpi/vcore both to 1.3v, memory at 1.65v, everything else left on auto. See if that will boot at all. If not slowly raise Qpi up one notch and repeat.

^ Sounds like a winner to me.

I'm on 181x21 (3.8ghz) on 1.192v Vcore and 1.26v QPI with a Corsair H50 (push-pull) though I'm using 3x2GB RAM (8-8-8-24-2T). Temperatures are only just acceptable for me though when the house is warm (fine on a cold day).

 

[Paddy McGinty]

what cooling set-up blood?

can get 4.11 stable with 1.32 qpi, 1.34 Vcore. my corsair H50 isn't up to cooling that though. once of the cores hit 91C lol.

Im running a custom water setup with mcr 320 rad.