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OCing FX8350 and HD 7870 together issues - Page 3

post #21 of 45
I'd take that CX and use it to break the glass of a store that sells Superflower PSUs.
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post #22 of 45
I do have one more question, what voltage are you giving the CPU for that "stable" 4.6 OC ?? You should be around 1.45v IMO
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post #23 of 45
Thread Starter 
Quote:
Originally Posted by Johan45 View Post

I do have one more question, what voltage are you giving the CPU for that "stable" 4.6 OC ?? You should be around 1.45v IMO

In the BIOS I set it to +0.175v which HWMonitor shows at about 1.47v to 1.48v, under heavy load (IBT AVX) it drops to about 1.44v to 1.45v. At idle it drops to about 1.0v (C&Q). I also have NB Core at +0.1v. The DDR3 1600 is running at 1760 (FSB +10%). It is 1.35 volt mem, but I changed the BIOS profile option to run it at 1.50.
Edited by brad1138 - 4/23/14 at 12:06pm
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post #24 of 45
Did you check the link I posted? I wouldn't be running an overclocked 8350 on that PSU. A reputable source: http://www.overclock.net/t/1431436/why-you-should-not-buy-a-corsair-cx/0_20

But the overclock looks good. Having power-saving on could also be a factor in the crashes you've experienced; if the overclock is unstable.
Edited by Synister - 4/23/14 at 12:56pm
post #25 of 45
CX-600 is built by CWT (Channel Well Technology).
post #26 of 45
Thread Starter 
Quote:
Originally Posted by Synister View Post

All the above in consideration. 46 A is better than the 40 listed on the Corsair site.

It may be an adequate PSU for that build - what I'm trying to get across is:

That PSU is not a 'high quality' or 'top spec', true. It is capable of powering your components, true. It may not be up to the task of running your system under 'non-standard' load. If you are stress testing your PC - you will be putting load on the PSU which it was never designed for.

A typical 'top spec' PSU - will be able to cater to this need, due to the higher quality components and build of the PSU.

Well put and point well taken.

When I built my system, I was (and still am) very budget minded. I was trying to find the least expensive components that still seemed up to the task. I waited till the FX-8350 was on sale at $180, got my HD 7870 used on Ebay for $140 (very good deal at the time). Heck, my memory cost me $2 total smile.gif they were $1 each with a motherboard bundle at Newegg. I needed the 2 motherboards to build my wife and father new computers anyway.

But I want this computer to last a long time and I want to play with OCing, so a better PSU definitely couldn't hurt. Looking around, this seems to be a good or very good PSU for a good price, any thoughts?
Edited by brad1138 - 4/23/14 at 5:36pm
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post #27 of 45
Quote:
Originally Posted by brad1138 View Post

In the BIOS I set it to +0.175v which HWMonitor shows at about 1.47v to 1.48v, under heavy load (IBT AVX) it drops to about 1.44v to 1.45v. At idle it drops to about 1.0v (C&Q). I also have NB Core at +0.1v. The DDR3 1600 is running at 1760 (FSB +10%). It is 1.35 volt mem, but I changed the BIOS profile option to run it at 1.50.

Well if you don't have an LLC setting on that boards bios I would bump that voltage up to a +.2 offset when the CPU and GFX card both pull on the VRM it's probably dropping too low this is called VDroop and is normal. LLC was introduced to help offset that phenomenon.
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post #28 of 45
Thread Starter 
Quote:
Originally Posted by Johan45 View Post

Well if you don't have an LLC setting on that boards bios I would bump that voltage up to a +.2 offset when the CPU and GFX card both pull on the VRM it's probably dropping too low this is called VDroop and is normal. LLC was introduced to help offset that phenomenon.

The Motherboard does have LLC, I played around with it a lot when I first built the computer. I found that the computer was more stable and ran cooler without enabling LLC. +0.175 really seemed to be the sweet spot. Any less and it crashed, any more and it would get to hot under Prime95 & IBT AVX.
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post #29 of 45
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post #30 of 45
Well LLC is one of those things you need to play around with a bit to get the right settings. What you want to accomplish with it is a nearly even voltage setting when Idle and under load. Every board is different and I'm not familiar with that one or I would tell you where to set it but most need medium to high setting or 75% whatever your board uses. Once you have it set properly You won't need to run 1.48 to get 1.44v you'll be able to lower your offset. I would aim for 1.45+v as your load voltage.
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