Q6600 @ 3.4 + P5KC + Corsair DDR3 1333

[Thundordan]

Need help with Q6600 @ 3.4 + P5KC + Corsair DDR3 1333

Hi everybody,

I'm having some stability issues with my P5KC..

q6600 seems to work stable @ 3005 MHz now but I'd like to take it to 3.4.

However the ram, always seems to get a bluescreen sooner or later no matter what I try.

On my current/smilar settings, the best I managed was 6-8 hrs of uptime witout a memory dump.

(doesnt depend on load)

Note: Mobo saw ram at 1066MHz DDR2 on first boot, with defaults

My Settings are:

CPU: 9x

FSB strap to NB: 333

FSB: 333

PCIE: 100

DRAM: 1333, CR: 1N, 9-9-9-24 (shows 1335 in CPU-Z)

Note: if I switch to 2N (2T) it bluescreens much earlier / right away..

CPU Voltage: 1.45 (i heard over 1.45v fries it in time)

CPU PLL: 1.7v

DRAM v: 1.7v

FSB Term v: 1.4v

NB v: 1.55v

Now I'm not an expert at this, so I'd like some help on getting it to 3.4, or as high as it gets on no more than roughly 1.45v. And fix the ram

 

[Diablo]

Have you tried unlinking the RAM from the FSB or using a lower divider. What brand of RAM are you using? What voltage does it say on the RAM (on the actual RAM packaging/heat sinks)

Those voltages seem pretty high TBH, the CPU PLL is pretty high (mines sitting at something like a 1.52, the yellow light to say the voltage is high comes on a 1.6V. What's the VTT and what temps is this bad boy running at?

Is this older DDR3 (that wants 1.8V) in which case I may have found your problem.

 

[Thundordan]

2x 2GB DDR3 Corsair 1333 9-9-9-24, 1.7V (I thought the hardware details I wrote in the registration were going to show on each post) but CPU-Z says (in that table) that it should work at 1.5v

"unlinking the RAM from the FSB or using a lower divider" - does that mean I should lower the FSB strap to NB? (bit of a noob here)

I don't know what VTT stands for.

I have set the CPU voltages according to googled q6600 overclocking settings, from people aiming to 3.2-3.6 (bad thing to do I admit)

Oh and the temperature is between 38 to 52-54 in full load (have ordered a good heatsink should come in any day)

Also, badass PC you've got there mate! how much did it cost might I ask?

 

[Diablo]

The corsair might want a bit more juice ( try up to 1.8V). The CPUz thing is wrong, mine says the same, this is because DDR3 is supposed to be 1.5V, but if you run the RAM at 1.5, you'll be lucky to get 1066MHZ.

There should be an option to adjust the memory clock speed in the BIOS, it may be with an option of "linked/unlinked" and then a further option when you have linked it of something like synced/5:4/3:2. This may be bios dependant.

CPU VTT may be an option in you bios (it may be called something else though) and will be between 1.1 and 1.2V, don't worry too much about that.

What does the BIOS say about the actual voltage because this may be significantly different from what you are getting.

What is the product number of the RAM? That would help a bit.

Have you tried flashing the bios to the latest official update?

Also my PC cost about £4.2K once I put the raptor and bluray drive in. With everything in the box (including the pico ITX box) its about £4.5K

 

[Thundordan]

okay, I'll try the 1.8v

I think I know what you're talking about. My ram is currently on 1:2, but I have read about this before and couldn't find such a setting in bios.. (it might pop out tho when I turn some random looking thing to "manual")

"What does the BIOS say about the actual voltage" - of what?

I have flashed the bios twice and it is up to date..

I threw away the box the ram came in, I'd have to unplug the pc and have a look inside, but if you're just looking for the exact name of the product, here it is: Corsair TWIN3X2048-1333C9DHX

 

[Diablo]

OK, I guess they have updates the RAm so 1.7V should be OK (sorry), the BIOS ought ot have a hardware monitoring section with the voltages in or use asus probe or whatever came with the mobo for a rough idea of what everything is getting.

Also I reckon you should have a look at real temp or core temp for temp information.

 

[Thundordan]

Okay so here's the scoop:

CPU PLL has 2 settings: 1.5 and 1.7, I chose the 1.5 now.

BIOS says:

CPU temp: 40-41 C

MoBo: 33 C

Vcore: 1.3-1.6v

3.3v Voltage: 3.26v

5v Voltage: 5.040v

12v Voltage: 12.096v

^what are those last 3 voltages from?

Q6600 has responded pretty well to overclocking, meaning I only got 2 fails out of like 7 tries. The ram tho, keeps me from overclocking

it could be the 1:2 ratio thing, but, I can't seem to find it in bios

 

[Diablo]

The CPU temp is fine, that vcore is obviosuly not (1.6V=fried chip and possible other bad stuff due to the voltage being too high). The last three are just saying the volages your PSU is pumping out, they are fine.

You may have somesort of asus auto OC on it:

set ai overclock = manual page 4- 16 manual

have dram frequency == page 4-18 manual

dram timing control = 4 - 18 of manual

dram voltage control 4-19 manual

This is only taken from another forum, looks like some corsair ram has problems with this board

 

[Thundordan]

F*CK got bluescreened twice in 5 mins trying to write the reply

so, I found what the Vcore problem was, a "Transaction Booster" set to auto did it, now Vcore is 1.35 and stable.

I looked through the manual again, and it says nothing of a FSB : DRAM ratio setting..

When it bluescreened right away (just now, teh 2nd time) it may have been cause I had lowered the "FSB strap to NB" from 333 to 266 (and the ram went to 1335 from 1333). Now I'm trying 200 (ram is 1332). Maybe it's that, though it shouldn't.

Oh, there's 2 things called "Dram static Read Control" and Dram static Write Control" I have switched to Disabled, someone suggested I should.. dont know what they do

[EIT] Should I do this:

AI overclock tuner

cpu ratio: 8

FSB strap to NB: auto

FSB frequency: 333

PCIE FREQUENCY: 100

DRAM FREQUENCY: DDR3-1333

DRAM COMMAND RATE: 2T

CAS: 9

RAS TO CAS: 9

RAS PRE TIME: 9

RAS ACT TIME: 24

DRAM STATIC READ CONTROL: DISABLED

DRAM STATIC WRITE CONTROL: DISABLED

ADJUST CHA SKEW: ENABLED

set both to 300PS

ADJUST CHB SKEW: ENABLED

set both to 000ps

TRANSACTION BOOSTER: OFF

CPU VOLTAGE: AUTO

DRAM VOLTAGE: 1.7 VOLT

NB VOLTAGE: 1.4 VOLT

CPU SPREAD SPECTRUM: DISABLED

FSB SPREAD SPECTRUM: DISABLED

leave the rest to auto

 

[Diablo]

I think the FSB to NB controls the bus speed the NB recieves, hence the higher you push that, the higher the OC you will be able to get. I don't know though, so try a few googles...

 

[Thundordan]

The FSB strap to North Bridge IS the FSB : DRAM ratio

just figured it out. So now it's on auto (cause i didn't know what it changes) and CPU-Z says the ratio is 5:8.

Also, on 333 FSB I lowered the memory clock from 1333 to 1066 and it -might- be stable (need to test it)

So, if I were to increase teh FSB to say 378 (to get the CPU to 3.4) and then set the clock to whatever will be around 1066, would it actually increase performance?

Cause, at 378 FSB, my ram frequency should be 1500 or higher.. if i set it to lower than that wouldn't it bottleneck my system and make the 3.4 GHz pointless? (idk)

 

[Thundordan]

[EDIT] sorry about that, double posted

 

[Diablo]

I wouldn't worry too much about the RAM bottle necking the system, if you can get it to stay at 1333MHz great, if not, try dropping it down to the next one and seeing what speed that gives.

OK the FSB NB bootstrap is the memory dividor I talked about earlier, so if you set it to auto at 8/5 you will obviously get 1066. FSB/dividor = 1/2*memory speed, in this case (333/5)*8*2=1066. Hence if you leave it at 5/8 that will give you 1210MHz on the RAM. Hope this helps.