Getting really f****d off with this now!

[Nickolie]

Sorry if my name keeps popping up with this same subkect matter but its really starting to do my box in!

I've recently OC'd my system, first to 3.6 which ran too hot for me and then I took it back down to 3.0ghz.

I have a Intel Q6600 G0 with a VID: 1.27505v and I keep getting either errors in OCCT and Prime95.

I was told that I need to get my FSBRAM frequency to a 1:1 ratio but no matter what I do I get a 1:2 or a 4:5 FSBRAM ratio.

I've looked through threads and it says that if my FSB is set to 333 (3.0Ghz) my DRAM frequency should be 667 - Have I read this right?

In the BIOS for my Asus P5K3 Deluxe board I changed my CPU FSB to 333 but in CPUZ it says its at 334.0Mhz and my DRAM frequency is set to 668 but it changes to 667.9 occasionally.

I read on one of the stickies that if you have DDR3 ram (yes i know, I wasted some serious cash lol) that I can only take my FSB so far due to the DRAM frequency. So because my RAM is 1333mhz my FSB can only be 333. Is that right?

Also in CPUZ it says that my Rated FSB is 1335.8 and changes to 1336.

Please, help me here, im loosing my mind! I think once I get over this hurdle I can leave you all be! lol

Thanks in advance!

Nick

Here are my system specs if you need them:

Asus P5K3 Deluxe

OCZ DDR3 PC3-10666 Platinum Edition

HIS ATI 3870X2

ThermalTake 750W PSU

Arctic Freezer Pro 7 + Arctic Thermal Compound

In CoreTemp it says that my frequency for my CPU is 3005.62Mhz (333.96 x 9.0)

my VID is 1.2750v

My CPUs core voltage is at 1.200 V

PLEASE HELP!!!

 

[heatsink]

My guess is you need to raise your vcore .05 volts at a time till u get a stable comp. I believe your proc is 65nm which means it can go upto 1.5vcore max. I stop at 1.45 vcore just so i can sleep better at nite!
Did you check the rams voltage, from 800mhz to 1066mhz ram usually need volts to be upped from 1.8v to 2.25v for the higher speed(this is a pretty standard setting for 1066 , not specific to overclocking)

 

[SirCrono]

My guess is you need to raise your vcore .05 volts at a time till u get a stable comp. I believe your proc is 65nm which means it can go upto 1.5vcore max. I stop at 1.45 vcore just so i can sleep better at nite!
Did you check the rams voltage, from 800mhz to 1066mhz ram usually need volts to be upped from 1.8v to 2.25v for the higher speed(this is a pretty standard setting for 1066 , not specific to overclocking)

He said he has DDR3, so the stock voltage should be 1.5 v right? The numbers you'r stating are for DDR2, plz correct me if I'm wrong.

But the idea is correct, the most likely cause of instability is the low vCore, raise it about 0.05 at a time until it's stable or you hit 1.45 volts, also rise the voltage of your ram by 0.1 or 0.2 volts, then test for stability, if it's stable lower the voltage one step at a time and test again until the voltages are as low as possible.

With good cooling you should achieve 3.6 or at least 3.2 GHz.

EDIT:
I forgot, the slight variations in CPU-Z and CoreTemp (and all other products) are OK, it's normal as long as it doesn't jump more than 1 or 2 MHz or 4 ~ 8 MHz (quad pumped)

 

[Nickolie]

Ok great I will try that in the morning. But also, how do I overcome the issue of the ratio being different?

Can I do this my just raising the Voltage on both the cpu and ram?

Thank you for your help!

 

[Nickolie]

Edit:

Yeah my stock voltage is 1.5V for the ram.

Is it really necessary for the FSBRAM ratio to be 1:1 or can it be anything aslong as it is stable?

 

[heatsink]

DDR3 outta my realm , sorry.
Good to always know your parts maximum voltages and not count on me.

I got an e4500 running(stock is 2.2) 3.4ghz(340x10) @ 1.45volts(using ddr2 1066/1333), beyond that it cooks eggs and can't pass prime95,
All benchmarks started losing points after 3.4ghz, maybe due to heat, but i nvr let it get past 60c/load (34c/idle-55c/load @3.4ghz) .
According to cpuz thats a 5:8 ratio, i couldn't get it to run in 1:1 at speed i wanted, and this still proved to show highest benches. Think the 800mhz fsb on e4500 prevented it!


Went to 3.0ghz with no voltage increases and no signigicant heat increase(stock setting 30c/idle - 45c load), after that, heat went up with volts.

 

[Zorg]

Is it really necessary for the FSBRAM ratio to be 1:1 or can it be anything aslong as it is stable?

It can be anything as long as it is stable. It may not be the most efficient setting or the one with the least heat, but it will work.

 

[jonyb222]

well you said you had 1:2 ratio? that's just your mobo that was made stupid, see the mobo maker probly though people would be unable to guess DDR2 is suposed to be twice the FSB and that DDR3 is suposed to be four times the FSB (so yea at 333, your ram will be 1333 DDR3) so they put it as 1:2 instead of 1:1, because if it truly was 1:2 your ram would be running at 2666 (or is it 667...)

 

[cjl]

DDR3 isn't quad pumped, so at 333, you'd be at 666 DDR3. At 667, you'd be at 1333DDR3.

 

[jonyb222]

^^ really? ummm... sorry about that, kinda figured since there's DD3 at 1600 and 1333 that they would work like that (the wiki article wasn't too clear on it)

 

[Zorg]

The names are DDR, DDR2 and DDR3. That means that they are all Double Data Rate, or double pumped.

The main benefit of DDR3 comes from the higher bandwidth made possible by DDR3's 8 bit deep prefetch buffer, in contrast to DDR2's 4 bit prefetch buffer or DDR's 2 bit buffer.

This allows the internal memory clock to be halved for each step from DDR to DDR2 to DDR3, allowing higher clocks.

 

[cjl]

^^ really? ummm... sorry about that, kinda figured since there's DD3 at 1600 and 1333 that they would work like that (the wiki article wasn't too clear on it)

Yeah - the biggest benefit of DDR3 will come with an IMC, as it does allow quite a bit of extra bandwidth over DDR2 in that case. With the FSB though, the gains are minimal.

 

[Nickolie]

Thanks for your help everyone. I was proper stressing out with it all.

I upped my voltages on the cpu to 1.256v and my system is now stable under OCCT and Prime95. Under stress test I get average temps of 63 63 61 60 so im happy with this.

Thanks again for your help, I think I might be abelt to push my system to 3.4 before it gets too hot under load.

Cheers,

Nick