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post #31 of 43
Quote:
Originally Posted by SabbathHB View Post

Quote:
Originally Posted by porschedrifter View Post

How high were you able to get the HT and NB clocks for your chip, we have very similar CPU's
Don't push your HT much past stock (2000-2200). You'll get no performance gains and will create instability. I got my cpu/nb stable @ 3000 and to be honest I never tried to push it further. My best performance was gained by running @ 4.0ghz with the Bclk over 270 (iirc 273). I don't have a great chip unfortunately. I have to push 1.5v to keep 4ghz prime stable.
What version of Prime though? The latest versions load Haswell chips beyond the point of being able to overclock them and pass. This makes me realize that stress tests are not about passing the hardest one, but about passing reasonable ones. When you hear the word "reasonable" though, you think "low standards" or "not good enough". At least I do.

What I ACTUALLY mean by reasonable, is verify and stress to the point that no matter what you do outside that test, nothing will ever fail from an error or be unstable.

Look at this chart:


CRAZY difference! The top few and bottom few seem to be useless for stress testing. But it's actually even more complicated than that. BF3/BF4 is much more likely to make you crash or get a BSOD than AIDA64 5.50.3600 full suite (current version). ANd Prime95 27.9 blend is going to be WAY easier to pass VS the latest 28.7 which is an instant freeze or BSOD for me.

I find one of the best and most REASONABLE benches is Realbench. I've tried a lot; That one sounded "puny" but actually is really tough, it uses a form of Linpack as well but doesn't get to insane temps. It tests using many, many different methods. I find that passing 1 hour with whatev ram it'll let you allocate is enough to call everything by the memory completly stable. If you're paranoid you can verify for 2 hours.
FOr testing the memory specifically you need Memtest by HCI (4.1 free will work). Split 95% of your ram between the number of threads/instances of the program you want to run. 200% is totally stable, 100% is not. (Runs over the same place multiple times to trigger errors).

My eyes are crossing and I'm falling asleep on my keyboard now so I have to go. tiredsmiley.gif

EDIT: LOL! I guess it's decided then!!! biggrin.gif Realbench stress test for 1 hour should do the trick! I can pass 48 minutes then BSOD - outside of realbench I've had BSODs in BF4 and while watching movies with SVP and madVR so it's not stable. I'd wager 2 hours is a more realistic test.
post #32 of 43
Quote:
Originally Posted by cookieboyeli View Post

What version of Prime though? The latest versions load Haswell chips beyond the point of being able to overclock them and pass. This makes me realize that stress tests are not about passing the hardest one, but about passing reasonable ones. When you hear the word "reasonable" though, you think "low standards" or "not good enough". At least I do.

What I ACTUALLY mean by reasonable, is verify and stress to the point that no matter what you do outside that test, nothing will ever fail from an error or be unstable.

Look at this chart:


CRAZY difference! The top few and bottom few seem to be useless for stress testing. But it's actually even more complicated than that. BF3/BF4 is much more likely to make you crash or get a BSOD than AIDA64 5.50.3600 full suite (current version). ANd Prime95 27.9 blend is going to be WAY easier to pass VS the latest 28.7 which is an instant freeze or BSOD for me.

I find one of the best and most REASONABLE benches is Realbench. I've tried a lot; That one sounded "puny" but actually is really tough, it uses a form of Linpack as well but doesn't get to insane temps. It tests using many, many different methods. I find that passing 1 hour with whatev ram it'll let you allocate is enough to call everything by the memory completly stable. If you're paranoid you can verify for 2 hours.
FOr testing the memory specifically you need Memtest by HCI (4.1 free will work). Split 95% of your ram between the number of threads/instances of the program you want to run. 200% is totally stable, 100% is not. (Runs over the same place multiple times to trigger errors).

My eyes are crossing and I'm falling asleep on my keyboard now so I have to go. tiredsmiley.gif

EDIT: LOL! I guess it's decided then!!! biggrin.gif Realbench stress test for 1 hour should do the trick! I can pass 48 minutes then BSOD - outside of realbench I've had BSODs in BF4 and while watching movies with SVP and madVR so it's not stable. I'd wager 2 hours is a more realistic test.
I can check on the P95 version number later tonight. I did my testing earlier this year, maybe Jan-Feb. And I totally agree that running different tests can give different results. I consider my OC's stable when they can do P95 for 24hrs, pass IBT and 3DMark's various benches a handful of times each, and of course no crashes in any games. It's a bit overkill I know, but when I call a system stable, it's pretty stable lol.

Edit=
And I run OCCT as well.
post #33 of 43
Thread Starter 
Nevermind just saw the pics lol...

I'm running latest prime. V28.7

I use Realbench and HCI memtest. Great stuff.
I'm also on water as well
Edited by porschedrifter - 12/2/15 at 1:48pm
    
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post #34 of 43
Quote:
Originally Posted by porschedrifter View Post

Nevermind just saw the pics lol...

I'm running latest prime. V28.7

I use Realbench and HCI memtest. Great stuff.
I'm also on water as well
I always used the latest prime thinking it was the standard, but the newer ones basically use patterns that push more 11111's than 00000's just to test the absolute limits, but literally NOTHING else does that. Knowing that it seems impractical to me since it's "test" is something wildly different than anything you'll actually encounter! Realbench has the perfect mix as it contains LinpackX, Handbrake, Blender, and some other stuff I forget about. I'm new to it. First week.

What I'm saying is, don't pass Prime95. I can't. I'm at 1.4v 4.6GHz on my 4670k 2.0 input voltage, 1.370v cache at x42, even lowering multipliers by 2 on everything I INSTANTLY freeze on Prime 28.7 of any test type and BSOD on 27.9 as shortly after it hits the crazy 11111 section of the test. It's not nearly as bad as the new version, but temps go from mid to high 70's to 95-100c almost instantly, then it stops working or BSODs usually before a worker cna even fail. That sort of bullcrap happens on Intel a LOT more than AMD, probably because AMD doesn't take advantage of AVX256 or whatever. Lol I was going to start it up to see what it tests but I remembered it's an instant BSOD. tongue.gif Rats!

It might be OK for you to run the earlier version since you're on AMD, but I still don't recommend it. Just get BF3/BF4, it's great at crashing when your OC is a hair out of line. thumb.gif
post #35 of 43
Thread Starter 
It's funny, because I've always used prime, and just this last time, I must be really friggin stable, because I can run it without a problem now. I've had my issues with prime though, on the last build of my system.

Realbench is becoming my fav now though, running it now as we speak, just realized it alerts when there's some sort of error or irregularity, and yeah keeps temps down which makes me feel better about long term stressing... Going to stick with this for sure.
    
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post #36 of 43
Thread Starter 
Is 1.548v a safe voltage for the NB/CPU? Seems kinda high, but it's the suggested voltage by Asus.....

This is what I got going on right now..





Edited by porschedrifter - 12/2/15 at 4:17pm
    
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post #37 of 43
Seems high. Are you using software to do this?
post #38 of 43
The Crosshair is known to overvolt the CPU/NB if left on auto or by using a OC utility.
This is why it's never recommended to use either to set voltage.

 
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post #39 of 43
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Ok I have everything set now. Trying to get 100% stable with NB at 2500, but should I even bother going above 2000 HT? Now I see a couple voltages in bios for CPU/NB and just NB, which is the one that I want to raise for the NB setting of 2500 in bios?

Also, wouldn't auto voltage give me the correct voltage for 2500 NB already? Isn't this board made to go above that anyway? Or do I still have to bump up the voltage manually?
    
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post #40 of 43
Quote:
Originally Posted by porschedrifter View Post

Ok I have everything set now. Trying to get 100% stable with NB at 2500, but should I even bother going above 2000 HT? Now I see a couple voltages in bios for CPU/NB and just NB, which is the one that I want to raise for the NB setting of 2500 in bios?

Also, wouldn't auto voltage give me the correct voltage for 2500 NB already? Isn't this board made to go above that anyway? Or do I still have to bump up the voltage manually?

Maintain 2000MHz +/- 200MHz HT Link Speed, varying is known to cause instability.

For CPU/NB Freq (NB Freq for short) adjust CPU/NB voltage
The actual NB voltage is usually fine around 1.1v till you start raising the Ref Clck (250MHz and over)

Anything set by Bios is developed to run in most all conditions, (not optimized) and sometimes not even close.
I think it's that group wearing those tin foil hats sometimes biggrin.gif
The more you learn and manually enter into Bios the better things will be.

Yes the mobo does have the capabilities to go much higher. I ran my 1090T @4211MHz with a 3211MHz NB but this is chip dependent not mobo.
CPU/NB is controlled by the IMC inside the CPU. You can't rely on generic Bios "Auto" settings to optimize voltages when you OC.
 
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