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My CPU... it JUST DOESN'T CARE! - Page 3

post #21 of 32
Thread Starter 
Wait I thought having it set to [Auto] and it saying 0 according to mym meant it was at 9-10? Now I'm confused ahh.

At 1600, my RAM failed to post at 7-7-7-24. I had to run at 7-8-7-24. Same thing as my current situation. The second I tried to lower to 7-7-7 at full voltage (1.656/1.4), computer wouldn't boot.
post #22 of 32
Like I said above, PSC chips just won't do a tighter tRCD, but they are pretty good for cas, my 7-8-7 1600Mhz mushkin kit (PSC ic's) does 1600 6-8-6 at stock V happily.
    
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post #23 of 32
Try running at 1600Mhz at 6-8-6. Also, if you run a longer benchmark with different B2B values you'll find that the default is actually around 10. Here's an in-depth article on the very subject:
http://www.madshrimps.be/articles/ar...#axzz1EulZ1kF0

FYI: A looser B2B timing can be the key to tightening the rest. Likewise it can pick up the slack for your loose RAS to CAS.
Edited by mymlan - 2/24/11 at 1:37pm
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post #24 of 32
Thread Starter 
I'm praying that this doesn't jinx anything but I'm 30 minutes in on a LinX test at full memory/CPU.

I took some of your advice and changed my multiplier to 21x210BCLK. My RAM is currently at 2105 with the same listed timings: 9-10-9-27 with a tRFC of 143 (auto). I will work on that after but right now it seems to be somewhat stable.

Vcore: 1.35v
PLL: 1.88v
QPI: 1.375v
DRAM: 1.656

Like I said, I really hope I'm not jinxing anything but I will do a BurnTest after this to see if anything changes (provided that this test completes).
post #25 of 32
Thread Starter 
This is absolutely ridiculous. My computer honestly completely IGNORES voltages.

I was getting some stability issues with the above settings. I tried increasing voltages more and that solved absolutely nothing. I increased timings FROM 9-10-9-27 TO 9-11-9-27 at 2105MHz and LOWERED my voltages FROM 1.656 and 1.4v TO 1.60 and 1.35 and I am getting 0 stability errors right now.

So basically I increased one timing and lowered my voltages by quite drastic amounts. Matter of fact, my DRAM voltage is .05 lower than what Corsair says I should be at for 2000MHz, which is quite a large amount, and I even lowered my QPI by .05. That's a full .1v, which is quite a bit.

What is this?
Edited by xyeLz - 2/24/11 at 5:13pm
post #26 of 32
Thread Starter 
Alright all. Here is my new stable setup run on LinX for 1 hour and IBT for a "maximum" test.

Feel free to critique my setup as I can always improve.

CPU: 4410MHz
VCORE: 1.35v
PLL: 1.88
RAM: 2105MHz
TIMINGS: 9-11-9-27
DRAM: 1.60v
QPI: 1.35v
QPI LINK: 3800MHz
NB: 3200MHz
Edited by xyeLz - 2/24/11 at 6:34pm
post #27 of 32
As far as I can remember, the 980x's IMC had a small problem when pushing over 1.3v on the QPI.

Also, on PSC RAM it is better to undervolt it.

The 980x's IMC is also known for its slight weakness compared to a nicer 920 or 930 chip.

TL;DR

LOWER YOUR QPI
LOWER YOUR VRAM



Also, sometimes, you just cant make things work. Things dont go how fast you want them to go. That doesnt mean push absurd amounts of voltage through it in an effort to make it stable.

2nd EDIT: FTW 420 is also making a point... Dropping the 7-8-7 to 7-7-7 doesnt really work for him, but 6-8-6 does.
Edited by MR KROGOTH - 2/24/11 at 6:35pm
    
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post #28 of 32
Thread Starter 
Quote:
Originally Posted by MR KROGOTH View Post
As far as I can remember, the 980x's IMC had a small problem when pushing over 1.3v on the QPI.

Also, on PSC RAM it is better to undervolt it.

The 980x's IMC is also known for its slight weakness compared to a nicer 920 or 930 chip.

TL;DR

LOWER YOUR QPI
LOWER YOUR VRAM



Also, sometimes, you just cant make things work. Things dont go how fast you want them to go. That doesnt mean push absurd amounts of voltage through it in an effort to make it stable.
Can anyone back this up?

I thought 1.35v QPI was fine and my RAM specs tell me to be at 1.65, and I'm at 1.6 which my BIOS isn't even complaining at?

EDIT: Regarding your edit, that's why I'm currently at 9-11-9-27 instead of 10-10-10-27.
Edited by xyeLz - 2/24/11 at 6:37pm
post #29 of 32
Quote:
Originally Posted by xyeLz View Post
Can anyone back this up?

I thought 1.35v QPI was fine and my RAM specs tell me to be at 1.65, and I'm at 1.6 which my BIOS isn't even complaining at?
I do know the 980X does have a weaker IMC which was supposedly fixed in the 990X.
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post #30 of 32
Quote:
Originally Posted by xyeLz View Post
Can anyone back this up?

I thought 1.35v QPI was fine and my RAM specs tell me to be at 1.65, and I'm at 1.6 which my BIOS isn't even complaining at?
It may be around 1.35v on the QPI.

I'm no expert.

Keep your ram at 1.65v.
    
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