The Maximus Formula Thread - Help/OCing/Guide/Rampage conversion

[19*12 gamer]

I cant get passed 455FSB stable under 1.280 vcore stressed.

GTL settings on my mobo r kinda lame, cuz Maximus Formula only has 4 options for cpugtl: (I have bios 0701 from rampage formula, should I get the latest 1?)
0.62x (no POST), 0.63x (no POST), 0.65x (no Boot), 0.67x (OK)
And for the NB 8 options, but all settings lower then 0.63x is unstable en doesnt let windows boot. (only remaining setting is 0.67x)

This is what's breaking my head:
I can boot and stress mildly (IBT 512mb) @ 470FSB with;
cpuv;1.375 / 1.280 (all variations are less stable)
pl:1.52 bios, reads 1.60 (all variations are less stable)
nbv;1.61 ( (lower volts here is less stable, higher no effect))
FSBTv;1.36 / 1.26 (1.36/1.38 seems best here, higher, lower bad effect)
nbgtl;0.63 cpugtl;0.67 (c above)
Common performance level:10/9 (444FSB can go on 7 stable)
940Mhz +5-5-5-18 2.1v!! <-- This is what I do not understand, why does my RAM need so much volts? Is the NB to stressed?

940Mhz +5-5-5-15 2.1v <--This is lower then spec = no boot windows

Ram spec: 1066+5-5-5-15/2.1v of 1066+5-5-5-18/1.8v standaard


Or IS the the absolut limit? Temps are good, NB 40 stressed, CPU about 60.

btw, Ik have Corsair XMS2 ram. (and raising volts didnt help anymore after 2.1)

[19*12 gamer]

Got it.

It was the Load Line Calibration, that needed to be enabled this time. Weird cuz on 444FSB it had to be on auto and on 455FSB it had to be disabled.

So now I have 470FSB looking stable, only it gets 2 hot so I cant stress harder (71degrees with IBT max stress 1x, 69degrees when 10x512mb IBT stress)

I made it with these settings:
8.5x477FSB
Strap:AUTO
DDR2-941MHZ 5-5-5-18 @ 2.0v
static read control: disabled
AI Clock Twister:auto
AI Transaction Booster:auto
CPU:1.350v bios / 1.336 cpuz load and idle(still lowering, not done finetuning)
PLL:1.52v bios / 1.600 real
NB:1.61v bios / 1.616 real
FSBT:1.38v bios / 1.280 real
both GTL and Skew settings are set to auto.

EDIT:OCCT large data set still gives error after 30 min I did set the ram back to spec: 5-5-5-15@2.1v. CPUv had to e increased to 1.368 as well....

[19*12 gamer]

Now Im really close to 100% stable
OCCT ran for an hour larga data set and IBT ran max as always. My quess about the ram was right, didnt change much in the end:

Strap:AUTO
DDR2-940 MHZ 5-5-5-18 @ 1.8 v bios / 1.878 real
static read control: disabled
AI Clock Twister:auto (tweaking this after max FSB is found)
AI Transaction Booster:auto
CPU:1.368v bios / 1.352 cpuz load and idle
PLL:1.52v bios / 1.600 real
NB:1.61v bios / 1.616 real
FSBT:1.38v bios / 1.280 real
both GTL and Skew settings are set to auto.
(maybe now I can finetune these and get lower vcore)

OCCT is running for 100 minutes now, I guess its time to go higher FSB xD

[19*12 gamer]

Thanks for the settings grnfinger! (only saw your mess today so Ill test it this evening and report back this evening)

Just wanted to say that I really love xtremesystems, especially the forums, you guys know so much I never stop learning and I really appreciate the effort+info!

Best achieved yesterday was 490*8.5 bootable and light stressable, Intel Burn Test 5x 512m = 40%, starting to get there...

Yesterday I got error in OCCT all of a sudden, but I got it stable for 6+ Hours now:
changed:
strap:333 and CPUSkew:delay 100pico and NBskew:normal

[kogeltje]

Mine on a P5E with RF bios 0403