get stable on 4-4-4-12 and OC help

[PakaPaka]

hey

my G.Skill 4GB 800MHZ Pi cant get stable on 4-4-4-12 with my OC to 890MHZ.
is this is so hard to get this timing on 890MHZ? i think it will be easy for him..
the VRam is on 2.1V, he need more voltage to get this timing?

what will help me to get stable on 4-4-4-12 at 890MHZ?

tanks.

[PakaPaka]

help?

when i set 4-4-4-12 at 890MHZ on 2.1V i cant get a post.

[Leeghoofd]

which mobo ? CPU ? FSB ram ratio ? have you tried 5-4-4-12 ?

[PakaPaka]

sorry, i always write my rig.. i forgot this time.
e8400 stepping CO on TRUE120
ASUS P5Q PRO bios 1613
G.Skill 4GB 800MHZ Pi CL4
1:1

i try very soon, i got some problem with the OC.
i put these setting and its crash after some hours, but pass 1 and half hour on OCCT. any help? tanks.
here are the setting:

Ai Overclock Tuner : Manual
CPU Ratio Setting : 9
FSB Frequency : 445
PCIE Frequency: 100
FSB Strap to North Bridge : Auto
DRAM Frequency: 890MHZ
DRAM Timing Control: 5-5-5-15
DRAM Static Read Control: Auto
Dram Read Training : Auto
MEM OC Charger : Auto
Ai Clock Twister : Auto
Ai Transaction Booster : Auto
CPU Voltage : 1.366
CPU GTL Reference: Auto
CPU PLL Voltage : 1.50
FSB Termination Voltage: 1.30
DRAM Voltage : 2.10
NB Voltage : Auto
PCIE Sata Voltage: Auto
Load Line Calabration : Enabled
CPU Sread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew: Auto

from this guide: http://www.computerlounge.co.nz/foru...x?g=posts&t=50

[Leeghoofd]

Ai Overclock Tuner : Manual
CPU Ratio Setting : 9
FSB Frequency : 445
PCIE Frequency: 100
FSB Strap to North Bridge : Auto
DRAM Frequency: 890MHZ
DRAM Timing Control: 5-5-5-15
DRAM Static Read Control: DISABLED
Dram Read Training : Auto
MEM OC Charger : Auto
Ai Clock Twister : Auto
Ai Transaction Booster : Auto

CPU Voltage : 1.366
CPU GTL Reference: Auto
CPU PLL Voltage : 1.56
FSB Termination Voltage: 1.26
DRAM Voltage : 2.10
NB Voltage : 1.26
PCIE Sata Voltage: Auto
Load Line Calabration : Enabled
CPU Sread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew: Auto

Try the above plz and set TRFC to 50 or 55

Does the CPU pass small FFT ? I didn't like the 1613 bios on the P5Q Pro, I reverted back to 1406

[PakaPaka]

what is it TRFC?
its this number after the 5-5-5-15-50-2T that usually need to be 36? its cal TRC, this is what you meed?

well, its stable i think.

looks good?
the MB temp in ASUS probe is the NB temp?
tanks

[Leeghoofd]

Mobo temp is mobo temp, it's NOT NB temp !! also try to run prime95 plz small FFT, your orthos seems to test 8k all the time which is not really a sign of stability as it's the easiest test...

TRFC is row refresh cycle time in the bios try 45-50

[PakaPaka]

ok i tast now with prime95 small FFT, but how much time is it test? until i stop it?

[Leeghoofd]

at least a few hours mate, if it fails, up Vcore a bit more

[PakaPaka]

i don't think i need more Vcore, i get stable with 1.328V on 450*9=4.05GHZ.

prime95 shows only FFT length 8K.. its test 11 and still 8K.
i run blend and see if its stable for one hour maybe, after that i do test overnight.

so if i am stable now that the ram is on 5-5-5-15 at 890MHZ at 2.1V.
how can i get post on 4-4-4-12?
what will help me to set this timing? tanks.

[Leeghoofd]

I have no clue why prime and orthos stop at 8K on your rig, you can select custom too when you start prime and set 20k then

[PakaPaka]

don't matter i test with OCCT.

so if i am stable now that the ram is on 5-5-5-15 at 890MHZ at 2.1V.
how can i get post on 4-4-4-12?
what will help me to set this timing stable?

and which setting i need for 4.5GHZ? if i can make it, i want to try.
now its like this in bios:
Ai Overclock Tuner : Manual
CPU Ratio Setting : 9
FSB Frequency : 445
PCIE Frequency: 100
FSB Strap to North Bridge : Auto
DRAM Frequency: 890MHZ
DRAM Timing Control: 5-5-5-15
DRAM Static Read Control: DISABLED
Dram Read Training : Auto
MEM OC Charger : Auto
Ai Clock Twister : Auto
Ai Transaction Booster : Auto

CPU Voltage : 1.336V in cpu-z at load
CPU GTL Reference: Auto
CPU PLL Voltage : 1.56
FSB Termination Voltage: 1.26
DRAM Voltage : 2.10
NB Voltage : 1.26
PCIE Sata Voltage: Auto
Load Line Calabration : Enabled
CPU Sread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew: Auto

give me some numbers for 4.5GHZ or less, that i now from where to start, tank you very much my friend.

[Leeghoofd]

AI clock twister to lighter and trfc to 55 will prolly make them stable at 900mhz 5-5-5-15 2T (it all depends on ya rams ofcourse)

[mikeyakame]

Disable DRAM Read Training, Mem OC Charger.

Command rate = 1N, 4-4-4-12-2-50-5-3 7-3-4-4-5-4-5 13-4-1-5-5

Try timings along those lines, and manually set AI Transaction Booster to 9. Raise Vdimm upto 2.2-2.24v and see how you go.

Personally P5Qs I've used don't like CAS4 on 2N command rate, even with 1N command rate they didnt like them much but there is a fighting chance if you can get the skews right. Seems the 1:1 divider is crappy in my experience.

[PakaPaka]

tanks a lot mikeyakame, but 2.2V-2.24V isn't way too much for 24/7 work?
2.1V didn't enough for 4-4-4-12 on this speed?

how many i can get with the cpu?
i got 55C max temp at 1.336V 4.00GHZ 445*9.
so how much voltage i need for 4.2GHZ or higher? tanks.
i just need some numbers to now from where to start.

[mikeyakame]

Depends on what the rated voltage is the memory, and how well it scales with voltage. Some sticks scale poorly and adding more voltage just makes more errors, others crave voltage. You need to figure this bit out as all memory sticks are different, and I can't say I have any experience with your G.Skills.

Most CAS4 sticks need 2.2V+, hell I haven't seen many that don't in my experience. Corsair Dominator CAS3 1GB DDR2-800s needed 2.35-2.40v just to run those timings.

Ive run 2.4-2.45v 24/7 with a Corsair Dominator Ram Cooler and other than shortening the life of memory to less than a year, it was fine its all about the air flow and cooling mostly.

[PakaPaka]

well i cant get this timing mikeyakame
i set everything you write and try little bit more but i cant get a post.
so i stay on CL5

now tell me guys, i am now on 4.00GHZ.
is 4.2GHZ give me a lot of more performance?
and why e8400 is such a good overclocker if he cant get over 4.5GHZ on air for 24/7? mostly of the e8400 cant.

[Leeghoofd]

Most E8400 do 4-4.2Ghz daily mate, the 4.5 24/7 ones are rare believe me...benching they can do 4.8Ghz

I would give 1406 bios a try and maybe also one of Ket's modified biosses ( they have better ram support, but I hardly noticed anything usefull with my boards and rams)

[mikeyakame]

well i cant get this timing mikeyakame
i set everything you write and try little bit more but i cant get a post.
so i stay on CL5

now tell me guys, i am now on 4.00GHZ.
is 4.2GHZ give me a lot of more performance?
and why e8400 is such a good overclocker if he cant get over 4.5GHZ on air for 24/7? mostly of the e8400 cant.

The values I gave you are a starting point. I can't just wave timings and hope they post, CAS 4 is hard to achieve on a P45 none the less. They aren't all that suited to low CAS timings. CAS5 needs much less voltage so stick with that.

[pangingIII]

PakaPaka,
may be your ram simply cant handle CAS4-4-4 at the ram clock speed.

[PakaPaka]

well i got some problem.
this is the setting for 4.00GHZ:
Ai Overclock Tuner : Manual
CPU Ratio Setting : 9
FSB Frequency : 445
PCIE Frequency: 100
FSB Strap to North Bridge : Auto
DRAM Frequency: 890MHZ
DRAM Timing Control: 5-5-5-15
DRAM Static Read Control: DISABLED
Dram Read Training : Auto
MEM OC Charger : Auto
Ai Clock Twister : Auto
Ai Transaction Booster : Auto
CPU Voltage : 1.336V
CPU GTL Reference: Auto
CPU PLL Voltage : 1.56
FSB Termination Voltage: 1.26
DRAM Voltage : 2.10
NB Voltage : 1.26
PCIE Sata Voltage: Auto
Load Line Calabration : Enabled
CPU Sread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew: Auto

after 5 hours of stable test that pass, its crash like after 3 hours.
i just don't now what to do

this CPU give me 4.05GHZ on DFI P45-T2RS PLUS with 1.328Vcore and 1.26VTT and 1.200VNB and 5-5-5-15 2.1Vram stable 100%.
but here on the ASUS P5Q Pro its not stable on 1.336Vcore and 1.26VTT and 1.26VNB and 5-5-5-15 2.1Vram

[PakaPaka]

OK update.
i think i wasn't stable but now i think i am.


the settings:
Ai Overclock Tuner : Manual
CPU Ratio Setting : 9
FSB Frequency : 450
PCIE Frequency: 100
FSB Strap to North Bridge : Auto
DRAM Frequency: 901MHZ
DRAM Timing Control: 5-5-5-15
DRAM Static Read Control: Disabled
Dram Read Training : Disabled
MEM OC Charger : Disabled
Ai Clock Twister : Auto
Ai Transaction Booster : Auto
CPU Voltage : 1.3500V in bios, 1.336V at load, 1.328V at idle.
CPU GTL Reference: Auto
CPU PLL Voltage : 1.56
FSB Termination Voltage: 1.26
DRAM Voltage : 2.10
NB Voltage : 1.26
PCIE Sata Voltage: Auto
Load Line Calabration : Enabled
CPU Sread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew: Auto

so now how many times should i run IntelBurnTest?
am i stable on 5 run times with 100% successful?

tanks

[Leeghoofd]

If it's stable mate in ya daily apps and usage it's okay... most users tell at least 20 IBT runs, but that linpack is sooo hard on all ya components that I don't recommend it to be used for long term usage... also it can be 100 run linpack stable yet cap out in prime blend under a 1 minute... if ya daily applications don't crash you are fine !!

Good you got it going mate !

[PakaPaka]

tank you my friend
i running WCG 100% 24/7, so i see if i am 100% stable in a few days.

so what do you say? should i going to the 4.2GHZ~ ? i mean 24/7 stable.
my rig can caring that? the temps and mobo?
i don't want to get over the safe range, 1.4Vcore.

and one other question, what is giving me more performance?
Ram speed 1080mhz~ cl 5-5-5-18 or 900mhz~ cl 5-5-5-15?

tank you very much.

[Leeghoofd]

I think 1080mhz will do better mate as you can use a lower PL setting... when you run ya rams in sync on P5Q it uses a high PL level , when you use a divider you can go at least one or two values lower and increase bandwith and co (but don't expect miracles of it)


Nice to see you using cycles on WCG mate, top job, I'm a folder myself