SandyBridge 2D madness - let's tweak for the best 1m, 32m, pifast and wprime!

[Linuxfan]

New chips looks like its a monster! 1.475vCore in bios...on Venomous-X push pull.

Looks really good there!
Question for you now is what is the max

[Splave]

Its booting XP so far at 56x100 1.53v 2c2t

[alex_tpc]

Im in awe right now! thats like amazing to me. Do you raise system agent at all? Anything funny in the digi tab?

Thanks. Used the digitab settings that default when you enable "Load extreme settings." Not much Vccsa tweaking on the 5Ghz clock--a couple of notches up from Auto. But the 8GB high mem-clock high cpu-clock setting below requred Vccsa fine-tuning.

Nice new proc you got there btw.

The problem with above is what happens when you start running at max speeds of cpu.

5 gig was preety easy with hyper, max speed of cpu got alot harder, especially when tossing waza in.

Yup. This CPU maxes out around 5.360Ghz (I think ). I could get it to run 8GB 2153 7-7-6, tight subtimings with 5.348 Ghz but could only go 8GB 2184 7-7-7 with 5.324 Ghz:





Once past 5324.6 on 102.x bclock, Vccsa, Vccio, and Vdimm needed very fine tuning with 8GB 1:8 strap --until I needed to raise vdimm further than what I'm willing to do on these EOL hypers. Loosening up the timings didn't help much after some point.

Sounds like the UD7 may not have the same problem? Will try it again sometime hopefully with a proc that can go higher than 5.35Ghz.

[Hampti]

hello guys. maybe anyone can help me. i have a 2600k with an p8p67 pro B3 and a kit of Corsair Dominator GT1600 CL7 and they do 2200@cl7 1,65V on a P55 Board. But no chance to get them on cl8 or anything better on my P67. the ram stucks on cl9-9-9-23-1T@1,65V on 800mhz also than 1070mhz. Could it be that the IMC of the CPU is so crappy?

[chew*]

when you say they do 2000+ c7 on p55 I assume your referring to lynfield?

If so totally diff animal, lynfield wasn't very effec, sandy is very effec thus harder on rams.

[ZenEffect]

hello guys. maybe anyone can help me. i have a 2600k with an p8p67 pro B3 and a kit of Corsair Dominator GT1600 CL7 and they do 2200@cl7 1,65V on a P55 Board. But no chance to get them on cl8 or anything better on my P67. the ram stucks on cl9-9-9-23-1T@1,65V on 800mhz also than 1070mhz. Could it be that the IMC of the CPU is so crappy?

weird. i can run 8-7-7 2133+ on my pro with kingston hyperx lovo's (hyper ic)... cas7 is a no go though. wont even make it to post, hangs at det dram every time... it may be a combination of things like the quality of the ram itself and the board. cas7 can be done (cuz i saw chew do it) but you better be prepared to put in some time and have alot of patience.

[Lucky_n00b]

Got my new chip yesterday, not bad at all

Test Setup :
Core i7 2600K L042A969
Gigabyte P67A-UD4-B3, F2 BIOS
Apacer ARES DDR3-2400 2x2GB
Seagate Momentus XT 500GB
Antec 1200W PSU
ThermalRight Venomous X + Silent VIZO 1200rpm fan

Have only tried SuperPi 1M and 32M

SuperPi 1M :


SuperPi 32M :


AIDA64 B/W , 2250C6-10-7 :


This is not my most efficient run though, I intend to finish Pi with 105.6Mhz BCLK and DDR3-2250C6-10-7 but Pi keep failing at this frequencies...need a couple more tweaks and adjustment I guess..

Also I'm curious, what RAM u guys use to get 2133+ 7-7-7 ?

Cheers ,

[Hampti]

when you say they do 2000+ c7 on p55 I assume your referring to lynfield?

If so totally diff animal, lynfield wasn't very effec, sandy is very effec thus harder on rams.

Yes you're right. im referring lynnfield (i7-860). but for me its not normal that i cant go with cl8-800mhz on the SB. is it depending on the cpu how high i can go with the ram latency? this is my first sb. i have read that the max bclk depends on the cpu (with little assistance of mb).

[ZenEffect]

Also I'm curious, what RAM u guys use to get 2133+ 7-7-7 ?

Cheers ,

hyper ic based ram

[Atzenkeeper500]

@lucky_noob - Why is the Vcore so low ? most need vcore above 1,5V (even subzero cooling) - or is cpuz showing the wrong vcore?

[Bullet92]

@lucky_noob - Why is the Vcore so low ? most need vcore above 1,5V (even subzero cooling) - or is cpuz showing the wrong vcore?

CPU-Z is showing VTT voltage for B3 GB mobos. Waiting new version for correct reading..

[ekky]

my 2600k died..so now i'm playing with 2500k... max multi so far is 56x
Testing with GD65 and Apacer aress 2000C9.. can only run 2133 8-9-7-21 1T.. winXP SP2.... 2Cores

[Dumo]

my 2600k died..so now i'm playing with 2500k... max multi so far is 56x
Testing with GD65 and Apacer aress 2000C9.. can only run 2133 8-9-7-21 1T.. winXP SP2.... 2Cores

2500K bagus Ekky

More BCLK?

[geobot24]

my 2600k died..so now i'm playing with 2500k... max multi so far is 56x
Testing with GD65 and Apacer aress 2000C9.. can only run 2133 8-9-7-21 1T.. winXP SP2.... 2Cores

Any issue with vdroop?

[ekky]

2500K bagus Ekky

More BCLK?

Eh ada bang Dumo
GD65 sucks with BCLK..i will test with marshal tomorrow

Any issue with vdroop?

set bios 1.6v.... msi control center detect 1.575v.. cpuz detect 1.584v.... a litlle bit confusing how much vdop

[Hampti]

is it right that the reachable max multi and bclk also depends on the motherboard and bios revision?

[oanvoanc]

is it right that the reachable max multi and bclk also depends on the motherboard and bios revision?

all cpus i tested seemed to have the same behavior:
if the max bootable multi is e.g. 54x the max reachable frequency is something between 5400 and 5500 mhz, no matter which multiplier i used. 54, 53 or lower.

(presuming i use one of the latest bios available - but no difference if i used u4 or p8p67 pro)

[Hampti]

thx zachi. i've retested my cpu and it looks like the same.
but another question:
did anyone of you bench the sb with corsair dominator gt1600 cl7? i haven't any chance to give them lower timings than cl9-9-9-23 at 1070mhz on asus p67pro. anyone the same problems? if not then please feel free and give me a gift with your settings. and what are the highest vdimm you would gave them wir corsair airflow cooler?
greets and tia

[Perica_Barii]

Little update with 2500k sub 6min

[Splave]

your ram is highly palatable and 4 sticks zOMG low voltage blade?

[aslanwas]

your ram is highly palatable and 4 sticks zOMG low voltage blade?

+1, incredibly nice ram

[Perica_Barii]

Ocz Blade 2000 cl 7 8 7 ram , I needed 1.78v on it and 1.14vtt for those clocks...

[chew*]

Ocz Blade 2000 cl 7 8 7 ram , I needed 1.78v on it and 1.14vtt for those clocks...

Is the UD7 B3 less effecient perica? I would expect with 8 gig sub 6 would get blown away lower.....

IIRC I did sub 6 with 4 gig at 5502.

[Perica_Barii]

Didn't try another bios, just one that came with board.Also need to play with Waza little more.Would be interesting in your 5502 screen just for comparation....

[chew*]

Didn't try another bios, just one that came with board.Also need to play with Waza little more.Would be interesting in your 5502 screen just for comparation....

Here you go. I was actually looking at some of the other 8 gig results others posted to and they beat this easy. I doubt it's your tuning might be bios currently.

http://www.xtremesystems.org/forums/...1&d=1297635373