Asus P7P55D Series Discussion

**Supershanks** · 10-01-2009, 10:45 PM

yep running with two kits

I'm running 8-8-8-22 which is the Jdec#3 SPD you can see below

If you use everest Motherboard SPD Tab, there is more info on sub timings, I just manually enter the timings into bios, that's also why i put the long and short timing names in the template, it helps keep track

. I tend to start there as a rule, with most ram, but these didn't need any tweaking just run at that . Which means they could probably be tightened a little more?
Not got round to it yet

**Porksmuggler** · 10-02-2009, 11:26 AM

Page 4 of your thread had a run with 7-7-7-19 timings and different subtimings than what I have, I was wondering where those came from. Are those the ones Everest shows for the G.SKILL F3-12800CL7D-4GBRH? Maybe I'm thinking of a different thread, but I thought you had a kit of those too.

**Supershanks** · 10-03-2009, 12:06 PM

yes was running at 1520 so i tightened tras up a bit i think.
difference in spds is down to rating , my kit is 2000.
this is spd per everest

**GrossmeisterB** · 10-04-2009, 08:03 AM

Hey guys!
Are these voltages safe for 24/7 use?

CPU speed: 20x200
cpu voltage: 1.384V under load (idle = 1.472V => how to reduce this? enable Speedstep in BIOS??)
IMC voltage: 1.25V
DRAM: 1.65V
CPU PLL: 1.80V
PCH: 1.05V
CHA DATA: 0.525x
CHB DATA: 0.525x
CPU Differential: 1000mV
Clock skew: 200ps

These settings are Prime-stable, but are they safe to use 24/7?
Temperatures (air cooled) are about 70°C max. under load...

What do you think? Any hints on how I could reduce CPU voltage?

**OC Nub** · 10-04-2009, 10:53 AM

You may be able to lower your vcore a little by bumping up the VTT/FSB voltage a little, test it with Prime blend again. Another option is enabling LLC (if the board has that option) that will stop the vdroop and lower your idle vcore.

**Hockster** · 10-04-2009, 07:50 PM

For those running 860/870's, are you leaving hyperthreading enabled?

**GrossmeisterB** · 10-04-2009, 10:35 PM

Originally Posted by OC Nub

You may be able to lower your vcore a little by bumping up the VTT/FSB voltage a little, test it with Prime blend again. Another option is enabling LLC (if the board has that option) that will stop the vdroop and lower your idle vcore.

I will test that later, but I allready tried a lot of different settings, I bumped up the VTT( "IMC" ) voltage to 1.40V, but it won't run stable...it seems like my CPU "loves" those volts..

I also tried to that "Speedstep" - it works just fine, it reduces the multi, but not the vcore...

And I will try with LLC, too...but I read a lot about that LLC, and that it's not recommended to use it (because of intel's specs?)...

But thank you for your help!

**Supershanks** · 10-05-2009, 12:32 AM

For those running 860/870's, are you leaving hyperthreading enabled?

Leaving it enabled, if you turn it off all you have is an expensive i5-750

**melyee** · 10-05-2009, 09:49 AM

Originally Posted by Hockster

For those running 860/870's, are you leaving hyperthreading enabled?

If you're running your 870@3.5GHz, just keep it enabled.

**Donnie27** · 10-05-2009, 10:28 AM

Originally Posted by Supershanks

Leaving it enabled, if you turn it off all you have is an expensive i5-750

QFT! I'm looking at i7-860 and the Asus board now! If my trade goes through.

**Hockster** · 10-05-2009, 01:01 PM

Originally Posted by melyee

If you're running your 870@3.5GHz, just keep it enabled.

Yeah, it's an 860 at 3.5 for now, 21X167. Just not enough time for now to push higher, but that 3.5 was super easy. 1.25 volts, most everything else auto, but I did check that none were stupidly high.

edit: LOL

**Supershanks** · 10-05-2009, 02:05 PM

few updates:-
1) 170bclk Turbo mode using vcore offset:-

Unfortunately not manged to get much higher than 170 and stable. would like to get a bit higher for a decent 24/7 clock, that ticks the boxes power wise.

So went back to brute force

4.11Ghz 22x187Mhz 1,870Mhz 8-8-8-22

Just to confirm that Noctua Noctua Noctua NH-U12P is ok with 4x ripjaw:

Click Pic for more: how to manage if ram is tall

**melyee** · 10-05-2009, 06:42 PM

Originally Posted by Hockster

Yeah, it's an 860 at 3.5 for now, 21X167. Just not enough time for now to push higher, but that 3.5 was super easy. 1.25 volts, most everything else auto, but I did check that none were stupidly high.

edit: LOL

Not bad!
I'm running my 750@200x20@1.3500v, no errors with prime and OCCT 8hrs.
However, if I need to pass Linpack, I have to increase voltage to 1.375 and disable VT.

**Porksmuggler** · 10-06-2009, 12:21 PM

Originally Posted by melyee

However, if I need to pass Linpack, I have to increase voltage to 1.375 and disable VT.

disabling Virtualization Tech made a difference? I was under the impression it had no bearing on overclocking. I usually just disable it because I don't use it...

also what IMC voltage are you using for that 20x200?

**Supershanks** · 10-06-2009, 12:36 PM

disabling Virtualization Tech made a difference? I was under the impression it had no bearing on overclocking. I usually just disable it because I don't use it...

yup, it's either on if running turbo, else offf any other time.

**melyee** · 10-06-2009, 01:54 PM

Originally Posted by Porksmuggler

disabling Virtualization Tech made a difference? I was under the impression it had no bearing on overclocking. I usually just disable it because I don't use it...

also what IMC voltage are you using for that 20x200?

IMC will be 1.225v... I also enabled llc, some ppl said it's bad to enable it, but looks like it's better for me to enable it.

**angoholic** · 10-06-2009, 02:01 PM

@air but still bugged no cl7 is possible..

**melyee** · 10-06-2009, 02:03 PM

Originally Posted by angoholic

@air but still bugged no cl7 is possible..

impressive, but i can't see the voltage, is it 1.548?

**KURTZ** · 10-08-2009, 04:10 AM

hi folks, i noticed from some friends that there are huge troubles with some PSU like the LC Power or the Cooler Master Real Power m520 ... the boards simply don't starts ... someone have this troubles too?

**GrossmeisterB** · 10-08-2009, 05:21 AM

Originally Posted by KURTZ

hi folks, i noticed from some friends that there are huge troubles with some PSU like the LC Power or the Cooler Master Real Power m520 ... the boards simply don't starts ... someone have this troubles too?

I have an rather "old" Enermax Liberty 620W, it works perfectly on my P7P55D...

**KURTZ** · 10-08-2009, 05:44 AM

Originally Posted by GrossmeisterB

I have an rather "old" Enermax Liberty 620W, it works perfectly on my P7P55D...

strange ...

http://vip.asus.com/forum/view.aspx?...Language=en-us

**melyee** · 10-08-2009, 07:05 AM

Originally Posted by KURTZ

hi folks, i noticed from some friends that there are huge troubles with some PSU like the LC Power or the Cooler Master Real Power m520 ... the boards simply don't starts ... someone have this troubles too?

first time for me to hear that, everything works perfectly with my Tt 600W.

**0lta** · 10-08-2009, 08:01 PM

Finally i got my new mobo, (deluxe) and new rams, (ripjaws 1600), i've made some quick tests, and looks good for me.
superpi: http://hwbot.org/result.do?resultId=907324
32msuperpi: http://hwbot.org/result.do?resultId=907322
cpuz valid: http://valid.canardpc.com/show_oc.php?id=756469

**melyee** · 10-08-2009, 11:15 PM

Originally Posted by 0lta

Finally i got my new mobo, (deluxe) and new rams, (ripjaws 1600), i've made some quick tests, and looks good for me.
superpi: http://hwbot.org/result.do?resultId=907324
32msuperpi: http://hwbot.org/result.do?resultId=907322
cpuz valid: http://valid.canardpc.com/show_oc.php?id=756469

1.668v

btw, why the site shows 1.1points only for hardware score?

**Supershanks** · 10-09-2009, 12:57 AM

hi folks, i noticed from some friends that there are huge troubles with some PSU like the LC Power or the Cooler Master Real Power m520

How many friends ? no issues with owt that I can see.

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