X48 Rampage Formula Preview.

[greg.m]

Very nice mate

I'm guessing watercooling the NB has a huge amount to do with it, since it seems you need ridiculously high Vnb for stability at high fsb with 2gb sticks and > 1200mhz DDR.

Thanx mate. Without watercooling my nb i would need a fire-extinguisher

[neo_rtr]

Unfortunatelly my room temp is arround 23-25c

You told me it was getting up to 28c!!

Did you open the window?

Amazing dude.. Amazing!!

[mikeyakame]

you guys are getting some nice latency there

i have never been below 50ns with an intel setup, not yet anways

Nice work

My record on this board is 51.2ns at 7 x 490fsb, 4x1gb ddr2-1180, q6600, pl 7 w/ pha1 pull-in, ai clock twister stronger. Bandwidth wasn't nearly as good though.

[greg.m]

You told me it was getting up to 28c!!

Did you open the window?

Amazing dude.. Amazing!!

Thanx buddy

Youre right it was about 28c and as you know there isnt any window near my beast. Today its even worse so its a testforbid day

[greg.m]

you guys are getting some nice latency there

i have never been below 50ns with an intel setup, not yet anways

If you try a bit higher than 4500-4550mhz then youmight be amazed with the results

[spoof]

I need help. Currently i'm testing my NB/DRAM fot stability at 478 (CPU set to 7x478). So far, it's clear, that i don't need more than 1.61v NB, because rising it don't bring stability. DRAM voltages are set to 2.0v@1146@5-5-5-15@PL7. Default are 1100@1.9v. NB is under water, and DRAM are with Dominator Airflow. I'm usinge 67x NB GTL Ref., other values don't help. I'm wondering, if i coulde set 150ps different between CPU and NB skews, would it help? Because with both set to normal, over 460 is impossible. Maybe skews need to be more relaxed for 480?

[Alien Grey]

I need help. Currently i'm testing my NB/DRAM fot stability at 478 (CPU set to 7x478). So far, it's clear, that i don't need more than 1.61v NB, because rising it don't bring stability. DRAM voltages are set to 2.0v@1146@5-5-5-15@PL7. Default are 1100@1.9v. NB is under water, and DRAM are with Dominator Airflow. I'm usinge 67x NB GTL Ref., other values don't help. I'm wondering, if i coulde set 150ps different between CPU and NB skews, would it help? Because with both set to normal, over 460 is impossible. Maybe skews need to be more relaxed for 480?

A difference of 150ps between the CPU and NB would be to much. I think it would be better with CPU Clock Skew Delay 100ps and NB Clock Skew Delay 50ps or any other combination of delays with a difference of only 50ps.

You've got the same problem that I've got. Changing voltages doesn't make it more stable because it isn't the problem and there's nothing we can do about it.

[neo_rtr]

speaking of testing i was folding at home , running GPU on one hand and Boinc with SETI on the other overnight.
no issues. so i take this is pretty good testing anyway, for stability i mean. right?

[greg.m]

speaking of testing i was folding at home , running GPU on one hand and Boinc with SETI on the other overnight.
no issues. so i take this is pretty good testing anyway, for stability i mean. right?

the last few days is like ....graveyard..... here

but i would like to know that too if this is a good stability test...

[Alien Grey]

the last few days is like ....graveyard..... here

but i would like to know that too if this is a good stability test...

There isn't much to say anymore. I'm stuck at 8 X 450MHz if I want it full stable and I think that I've got to live with that because I don't think that we will ever see a better BIOS than what we have now.

Crunching doesn't stress your CPU as much as Prime95 Small FFT's. It isn't very good for testing stability. It will only fail when there are serious stability problems.

[greg.m]

There isn't much to say anymore. I'm stuck at 8 X 450MHz if I want it full stable and I think that I've got to live with that because I don't think that we will ever see a better BIOS than what we have now.

I agree with you we probably wont see any - much - better bios for our rampage boards but my next step will not be a s775 board anyway.
Now im waiting my new heatkiller rev3.0 with the ek-smax so i will have something to work with I hope ill see some huuuge tempdifference with the heatkiller installed...Of course this means better overclocking results
Lets see...

[neo_rtr]

A-Grey - tks noted.

Greg.m is preparing for upgrades, some kind of liquid HmmHmm. Or was it dark matter.
Apparently he is trying to break somekind of record here. like The most upgrades in a year or so..
+1 vote for that.
We need lots of pictures,,greg..

[kuebk]

Got my new E8500 today and looks like getting anything close to 500fsb or higher requires pretty much voltage on MCH.

[greg.m]

Got my new E8500 today and looks like getting anything close to 500fsb or higher requires pretty much voltage on MCH.

Great news i hope you enjoy her...

How much voltage are we talking about for 500fsb?

[kuebk]

Great news i hope you enjoy her...

How much voltage are we talking about for 500fsb?

1.45 is the lowest stable voltage on MCH I've tested so far.

Forgot to mention that you can't run lower PL than 9 on this MCH voltage, tighter PL would probably require much more overvolting.



vCPU: 1.275v, vMCH: 1.45v, vDDR: 2.2v, PL=9, all GTLs and Skews on auto.

[greg.m]

1.45 is the lowest stable voltage on MCH I've tested so far.

Forgot to mention that you can't run lower PL than 9 on this MCH voltage, tighter PL would probably require much more overvolting.



vCPU: 1.275v, vMCH: 1.45v, vDDR: 2.2v, PL=9, all GTLs and Skews on auto.

Think what you could do with nbv between 1.6-1.7... the prob you have is with the temps. Havent you done something about that?

[Ghostleader]

@kuebk

61C @ 1,45, you have to do some thing about it, it´s way to high.

Maybe a cooler like this for the NB and a fan


and like this for the SB

[kuebk]

@kuebk

61C @ 1,45, you have to do some thing about it, it´s way to high.

Maybe a cooler like this for the NB and a fan


and like this for the SB

61* it's a stress temp, mch gets colder kinda slow - haven't made any changes to mch/ich cooling except changing tim to AS5. Idle temp is 46*.

[Ghostleader]

61* it's a stress temp, mch gets colder kinda slow - haven't made any changes to mch/ich cooling except changing tim to AS5. Idle temp is 46*.

Even at stress 61C is way to high, some instability may occur when the temp is that high.

It seems like you system are working okey with it so then it most be okey.

BTW I had a third party cooler with a 80mm fan @ ~1900rpm on my NB before I went for water on it and it never got over your idle temp with max stress even though I push volts up in the red value.

Keep up the good work on that RF.

[kuebk]

Will have to think about getting some noiseless fans on it. Thinking about getting 7.5 or 8 x 533fsb for 24/7 use but only if I could stabilze nb temps under 55 on such fsb.

[greg.m]

Will have to think about getting some noiseless fans on it. Thinking about getting 7.5 or 8 x 533fsb for 24/7 use but only if I could stabilze nb temps under 55 on such fsb.

here is what i was using until i went on water

http://www.cooling.pl/antec-spotcool,produkt,1788.html



it has three different speeds and some nice blue leds

[kuebk]

greg.m found out that increasing fsbVTT gives much more than inreasing vMCH, done on CPU: 1.275, VTT: 1.24:

[Mikefra2008]

if i have an E8600 and i want it to be a 5ghz with 1.50vcore wich gtl cpu and nb do i need to calibrate it correctly? divisor 1:1 585 x8.5multi or 555x9 multi gtl cpu 63 y nb gtl 67?¿=

[kuebk]

if i have an E8600 and i want it to be a 5ghz with 1.50vcore wich gtl cpu and nb do i need to calibrate it correctly? divisor 1:1 585 x8.5multi or 555x9 multi gtl cpu 63 y nb gtl 67?¿=

With cpu gtl on 63% and nb gtl on 67% I was able to achieve 620fsb: http://valid.canardpc.com/show_oc.php?id=586151.

[neo_rtr]

Gents It give me great honor to present Greg.m latest project
http://www.xtremesystems.org/forums/...60&postcount=1