problems i7 @ 4ghz with 12GB Memory

Give up and send the Ram to me? :p

Only thing I can suggest is try 1444Mhz / 1300 mhz (nearest possible) and then remove XMP profile (I assume that is what you're using). Then stick the timings to "Auto" and see what happens.

And yeah, don't go above 1.65v for the RAM, not worth the risk to the controller. You changed your QPI/DRAM voltage?

I got this very same RAM in the post today as an rma replacement for my 1600 OCz... I'm enjoying it a lot!
 
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rexehuk said:
Give up and send the Ram to me? :p

Only thing I can suggest is try 1444Mhz / 1300 mhz (nearest possible) and then remove XMP profile (I assume that is what you're using). Then stick the timings to "Auto" and see what happens.

And yeah, don't go above 1.65v for the RAM, not worth the risk to the controller. You changed your QPI/DRAM voltage?

I got this very same RAM in the post today as an rma replacement for my 1600 OCz... I'm enjoying it a lot!
Click to expand...

Hi rexehuk , :D

lol !! Paypal me £95 and its yours.

The thing i noticed with this particular motherboard is the settings are picky. You can not choose a desired setting like most other boards. All the settings are tied together some how. I am at 1400mhz now due to the 175blck selected. If i go to my required 200x20 it sets ram at 1600mhz and it will not boot. The only other options for speeds are 1200mhz or higher than 1600mhz which does not sound like a good idea at the moment.

I been looking into this ram more deeply and might try setting at 1200mhz 8-9-9-22 2T timings (593mhz) and see what happens. I am sure the 4ghz clock would make up any difference i would loose in speed from the ram. ?

Although this probably wont work , we will see in the morning.

Thanks for the post. Much appreciated dude.

McstylisT
 
To be honest, you aint going to see a difference between 1200mhz and 1600mhz in your overall system. Id shove it to 1200mhz, timings auto, voltage 1.65, QPI/DRAM bus @ 1.32 or something (1.35 max).

If that don't boot then I don't know.

Any loss in performance you can make up by moving the majority of your system to RAM disk, since you have 12GB you could easily lower your page file and make your system a lot faster by utilising all that RAM with windows processes.
 
rexehuk said:
To be honest, you aint going to see a difference between 1200mhz and 1600mhz in your overall system. Id shove it to 1200mhz, timings auto, voltage 1.65, QPI/DRAM bus @ 1.32 or something (1.35 max).

If that don't boot then I don't know.

Any loss in performance you can make up by moving the majority of your system to RAM disk, since you have 12GB you could easily lower your page file and make your system a lot faster by utilising all that RAM with windows processes.
Click to expand...

Hi rexehuk ,

Well I tried and tried. I cant see whats going on. I can now boot into windows stably @ 3.77ghz with 1440mhz memory 9-10-10-25 2T.

I tried 4ghz (200x20 and 191x21) at both 1200mhz 2400 uncore with 1.5v and 1.65v. It just refuses to boot. I am currently at 178blck but 180 will not boot either. Im starting to think its this boards restriction with the full 12GB. Touching 3.8ghz is acceptable but really would like the 4ghz option along the line especially for the amount of encoding i do. :D

Also as asked by another member in the thread , the ram are the same series and are a matched set but different versions/revisions. My original 6GB was V8.1 and this new stuff is V9.1 with different serials but the ram itself is the same. Could this be the thing. ??

Im not sure where to turn now to try something different now. Its becoming a headache resetting the bios when it fails to boot.

QPI/DRAM bus @ 1.32 or something (1.35 max).
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I also do not get this setting to adjust. I get the DRAM voltage and thats all (1.65v) What else could this be related too. ?? Thanks.

McstylisT
 
McstylisT said:
I also do not get this setting to adjust. I get the DRAM voltage and thats all (1.65v) What else could this be related too.
Click to expand...

Can't really help out... It's there in my BIOS. From memory it's at the start of the section after the BCLK setting and should be called as I named QPI/DRAM Bus or Voltage. If you run XMP profiles it will modify the value of this auto.
 
If you can't increase qpi voltage, look harder. Not sure what your board will call it. This is very likely to need to be increased to gain stability with 12gb.

Assuming you have checked each set is separately capable of 4ghz (can't see this above), you need to spend time playing with the various settings or accept that your processor's imc isn't up to the task. If you're yet to try qpi, that's definitely where to go now. It might be called vtt, but don't quote me on that
 
rexehuk said:
Can't really help out... It's there in my BIOS. From memory it's at the start of the section after the BCLK setting and should be called as I named QPI/DRAM Bus or Voltage. If you run XMP profiles it will modify the value of this auto.
Click to expand...

Its a different layout sad to say. I am in the process of googling some info on these new DFI mobo's to break down some information on why certain elements are not present.

Thanks for all your input. Much appreciated.

JonJ678 said:
If you can't increase qpi voltage, look harder. Not sure what your board will call it. This is very likely to need to be increased to gain stability with 12gb.

Assuming you have checked each set is separately capable of 4ghz (can't see this above), you need to spend time playing with the various settings or accept that your processor's imc isn't up to the task. If you're yet to try qpi, that's definitely where to go now. It might be called vtt, but don't quote me on that
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Hi Jon ,

I have looked fully. Everything related to voltage is on one page. I have inspected every aspect of it. Believe me its not something i've missed. Its either not there or named something different.
You mention the vtt , as this is an option that is present. This has been raised to even the 1.31 level with no success.

I think getting a shot of my bios would help so i will do my best to get one uploaded.

Thanks for your input too Jon , appreciate that.

McT
 
DavyBoy said:
I think QPI Vtt is called 'CPU Vtt' on DFI boards..
Click to expand...

Thanks m8 , I do have that setting. :D

Does this need to be excessively higher than Vcore like over 1.3v. My Vcore was usually 1.23v stable at 6GB 4ghz under IBT. Do you think i should also raise the CPU Vcore to around 1.75 - 1.3v as to help the vvt voltage. :D

I'll give it another go soon. Its bugging me badly. :)
 
Few things. What temperature is the processor loading at?

What are the maximum speeds each set can run at individually? bsck to something like 150 and push the multiplier up until the ram fails memtest.

If you're lucky, one set can't run at rated spec, you rma it and we're done. If you're unlucky, your processor's imc just can't cope with running 12gb at that speed.

Qpi/cpu vtt might need to go over 1.3, but not far over it. Vcore shouldn't need over 1.3. If temperatures are high this can be the cause of instability though.
 
Idea...

Set CPU PLL voltage to AUTO (Could try 1.95v but the Max is 1.96 so not sure id be happy to recommend it)
QPI/DRAM (your QPI/VTT) 1.35
Dram Bus Voltage 1.66V (or 1.65 if you can selected that exact figure on your board, I can't)

Leave all other voltages on Auto. And don't go higher than these voltages or you will cause damage to your stuff. You can change your CPU voltage to your usual setting... not sure what you're stable at so I'll leave this down to you.

If it's stable, look to lowering the voltages, CPU PLL first, as these are all the max values allowed and I wouldn't want to run them 24/7.

Try

BCLK 195
Mult - 21
DDR3 - 1560
Uncore - 3120
QPI Mult - 7020

Shove your QPI/VTT up to 1.35V as well, my XMS profiles at 1.32v or something with 6gb, is that the same on yours?

Should give 4.09Ghz

To gloat... I only need 1.216v on my CPU to get 3.88Ghz stable :p

Bar this... I can only think of lowering the DDR3 until it's stable, so maybe trying one step under 1560 which might be 1066 or something?
 
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JonJ678 said:
Few things. What temperature is the processor loading at?

What are the maximum speeds each set can run at individually? bsck to something like 150 and push the multiplier up until the ram fails memtest.

If you're lucky, one set can't run at rated spec, you rma it and we're done. If you're unlucky, your processor's imc just can't cope with running 12gb at that speed.

Qpi/cpu vtt might need to go over 1.3, but not far over it. Vcore shouldn't need over 1.3. If temperatures are high this can be the cause of instability though.
Click to expand...

Hi Jon ,

The load up temp is around 40 mark or lower. Using the Corsair H50 for cooling.
I know from stressing and previous testing that the original (8.1 version) passed stress testing @ 4ghz 1600mhz and 3200mhz uncore fine. Max load temps were 80. Its this new batch im guessing i need to test really.

I personally been checking the DFI forums and even the guru's say its rare for a DFI mobo and 12GB mem to achieve a 4ghz overclock. I am hoping with future bios releases this will not be the case , but your right also I think quite clearly my IMC is having a hard time.

I can boot at 178blck and not 180 ?? Seem thats the answer to me.

But i will test both sets over the rest of the weekend.

Thank you for all your help Jon.

McstylisT

rexehuk said:
Idea...

Set CPU PLL voltage to AUTO (Could try 1.95v but the Max is 1.96 so not sure id be happy to recommend it)
QPI/DRAM (your QPI/VTT) 1.35
Dram Bus Voltage 1.66V (or 1.65 if you can selected that exact figure on your board, I can't)

Leave all other voltages on Auto. And don't go higher than these voltages or you will cause damage to your stuff. You can change your CPU voltage to your usual setting... not sure what you're stable at so I'll leave this down to you.

If it's stable, look to lowering the voltages, CPU PLL first, as these are all the max values allowed and I wouldn't want to run them 24/7.

Try

BCLK 195
Mult - 21
DDR3 - 1560
Uncore - 3120
QPI Mult - 7020

Shove your QPI/VTT up to 1.35V as well, my XMS profiles at 1.32v or something with 6gb, is that the same on yours?

Should give 4.09Ghz

To gloat... I only need 1.216v on my CPU to get 3.88Ghz stable :p

Bar this... I can only think of lowering the DDR3 until it's stable, so maybe trying one step under 1560 which might be 1066 or something?
Click to expand...

Wow ,,, Awesome stuff rexehuk ,

Right , the PLL voltage can not be set to auto sorry to report. Its standardly at 1.8 and can go high as 2.10 i think.

The vvt , goes up in 2's so i can select 1.34/1.36 so i guess i will try 1.36.

My usual CPU Vcore was 1.23 stable @ 4ghz. Im wondering if i need more now as many seem to use 1.275. I might whack it at 1.275 as it should not hurt.

I will try once again , did not really have much luck just then , I got into the windows logon screen before then it just restarted , now it just wont boot.

BRB ------ hopefully.

McT
 
Don't stick the PLL up past 1.95... I personally wouldn't go near it. Stay at 1.9 max imo and even then for long term I would rather lower my clock and voltage.
 
Well unfortunate for me it was unsuccessful.

It would not even boot for some reason @ 195blck. I tried 200x20 and it booted up fine.

I had the vvt @ 1.34 / 1.36 / 1.37 raising each to see if this helped boot it.

The PLL was firmly @ 1.95v.

I placed the CPU Vcore at 1.275 / 1.281 / 1.3

I left the ram timings to auto / then set them at the 9-9-9-24 2T and also more relaxed 10-10-10-25 2T.

The system refused to boot past initial system tests. Hanged for long periods and then flashes the BSOD and restarts. With all the combinations tried. Bummer ! ! !

I now have to test this ram. From there if its good its down to the IMC as that is my hunch now 95%. I think the ram is good personally. But will test it to be sure.

I know its hard to think of anything else at this point , but if you do please feel free to let me know.

Thanks again for the quality help on this.

McstylisT
 
Sadly, if it is the IMC I don't think there is much you can really do about it =(

I really hope you get this fixed though mate. But I have heard the i7s can be a bit funny when overclocking with that much RAM.
 
Ran outta ideas man.

Only thing I can suggest is run at a lower clock, you won't see any difference in 4Ghz to 3.6... especially if you use all 12gb of RAM for virtual mem/scratch disk.
 
Mine doesn't really like to go past 3.6 with 12GB Patriot on a UD5.

I have the RAM on Auto settings, but manually set the multi to 8.0 so it runs at 1440 rather than 1600. Cpu volts is around 1.25-1.30, the QPI one was a couple of notches down from wherever it warns you at - I think like 1.31 or something. Multi is 180, Hyperthreading etc all enabled.

CPU idles around 45, load at 70.
 
Hi guys , Thanks for the well wishes. Im hoping a future bios update can help me out along the line. Its not like the system is not capable of it , I have managed 4.2 Stable on just the 6GB.

I am stable @ 3.7ghz 176x21 @ 1.184v. :) So a good point. Ram is @ 1404mhz 10-10-10-25 2T 1.65. I can live like this i guess for some time. I have completely disabled my page file now , so using that ram as its meant to be used.

I sent a report out to DFI , just incase they might have some super settings that might swing it for me ..... lol wishful thinking.

I am going to remove 6GB and leave in the new 6GB tomorrow and make sure the mem can run at 1600mhz and a 4ghz clock stable as the first batch does. We will see i guess.

Thanks to you all. Great guys on a proper forum.

McstylisT ;)
 
Hi all , here is the latest update.

Removed the original 8.1v ram and left the 6GB 9.1v ram recently added in the system alone.

Booted the computer and entered the bios. Set 200x20 blck and multi , 1600mhz and 3200mhz uncore. Timings were 9-9-9-24 2T 1.65v so aiming for 4ghz here.

The result. ??????????????????????????????

Absolutely fine. ! Yes the system had no trouble working with the new 6GB ram at its rated speed 1600mhz clock at 4ghz. Ran basic Intel burn test to standard 5 tests with completion.

So i am now leaning towards thinking its my IMC just having trouble with the full amount of ram. I can use 3.7ghz which is not bad but would have liked the max power available.

Any other comments , ideas , tests welcome.

McstylisT





 
Sorry to bring my old thread back up , its just something that confused me a little.

I pretty much determined that the 12GB Corsair XMS3 1600mhz ram is all good.
For some reason regardless of settings and voltages the system will not boot above 176 bclk with 12GB ram stably.
It will go into windows at 177, 178 but will eventually crash in windows. 179 - 180 no post of system. So that's what i thought the breaking point of the IMC was.

My main problem has been in this thread trying to get the system to boot at 4ghz while stably keeping 1600mzh on the ram. To be precise it wont even boot at lower speed at 4ghz with the 12GB.

I found the sweet point to be 176x21 = 3.7ghz , with ram at 1410mhz. Fully stable 1.18v.
I just booted up and set the memory to 1760mhz expecting it not to boot. But it has. ?? Which completely confused me ??

So even at 1410mhz , any higher bclk than 176 and its not stable and restarts. So i would think this indicates the IMC was operating at its max , with the OC and the mem speed. But if i have now actually overclocked the 12GB to run 1760mhz and its stable too.

Just wanted some opinions on this really. I never expected this as all i was aiming to achieve was 1600 all along. The IMC handles it fine.

So at 1410mhz why does the system then have trouble using a bclk of 177 or higher. ???

Thanks

McT
 
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