Memory settings OK after BSOD...?

[frodofeet]

Hey, got my PC from OCUK just over a year ago now... "Ultima Viper" Intel Core i7 950 3.06GHz @ 4.00GHz... it's been solid until I recently had a BSOD, and then I briefly saw a message something like "overclocking failed", and then there was an option to reset to default settings. PC is starting and running fine again but I wanted to check the settings are still ok as I've had a few BSODs since then.

Here are my CPU-Z caps, can someone please confirm these look normal? My CPU still seems to be at 4GHz but the memory seems odd at 695MHz?

Thanks!

 

[wazza300]

what qpi/vtt voltage you using? could go tighter timings to atleast 8-8-8-24 command rate 1t? 1t will be better than 2t

 

[frodofeet]

what qpi/vtt voltage you using? could go tighter timings to atleast 8-8-8-24 command rate 1t? 1t will be better than 2t

Thanks for the quick reply. Forgive me for not fully understanding what you are asking for, I'm a novice at this...

I couldn't find a specific qpi/vtt setting in my BIOS so I uploaded some caps of what I think is relevant... not sure if these answer your question...

 

[wazza300]

ok see where it says qpi/dram core voltage?(its labelled differently on diff make of mb) set that to atleast 1.34 or round about that amount,i have that mb also do you know you can clock through or set cpu voltage using voltage offset? that way cpu will auto downclock at idle and use full 4ghz when needed or if stressed

and see where it says dram timing control? thats where you type in your timings,if you post screenshot of that page ill tell you what and where to type in,also set cpu voltage back to auto and tell me what amount it uses then i can help you set cpu voltage offset(thats if you want to use offset)

 

[Surveyor]

See what options you have under the setting shown below.

Your RAM is currently running at 1390.6MHz (695.3 x2 as it's Double Data Rate).

It's shown as 1395MHz in the BIOS.

This is BCLK 173.8MHz x 8/2 (the Memory Multiplier) = 695.2MHz.

The next memory multiplier might push this over 800MHz (1600MHz) and the RAM might not be able to work at that speed.

You'll have to see what options you have.

One way to get 1600MHz on the RAM is to use a multiplier of 20 and a BCLK of 200MHz for your overclock (if you can).

That way BCLK 200MHz x 8/2 = 800MHz doubled to 1600MHz.

 

[frodofeet]

Thanks for the replies guys.

I think I'll use the settings suggested by Surveyor as screencaps below, but before I commit to this, a couple of questions please...

1. Multi 20 and a BCLK of 200MHz puts my memory at 1603MHz, is it okay to be over 1600 or should I drop this back to 199 @ 1595MHz?

2. I set DRAM Voltage to 1.65 as instructed on the Corsair website but this gives a big red warning... does it need to be 1.65 or is 1.64, or 1.5 for that matter ok (sorry I don't really understand how voltage affects memory).


p.s. I tried using XMP setting as I've seen suggested on other posts but although this set my memory to 1600MHz it also put my CPU back to 3.07GHz which I didn't think was ideal.

Regarding the timings as suggested by wazza300, here is what it's currently at, would reducing the timings to 8-8-8-24 have a noticable difference (my PC is primarily used for 3d gaming).

 

[wazza300]

yes above is fine,1.65v for dram is fine if its rated to run at that voltage for the speed of 1600mhz,yes it will be ok at 1603mhz and see above where it says dram timing mode 2n? set it to 1n,it will be better and should run fine,i would still set a manual dram core voltage of between 1.32-1.35v you will need to test for stability,and i would use cpu voltage offset as it allows cpu to downclock itself when not stressed