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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 3252

post #32511 of 67694
Quote:
Originally Posted by austinmrs View Post

Why 2,11 isnt enough?

I always run into issues, maybe not that day, but within a week or so something will lock up my computer

it is usually Flash, sometimes a game (that had ran fine for the week but decided not to give a shi*)

If you are looking for a tried and true reasoning beyond what other members have posted, good luck...

I don't think anyone truely know what the results mean other then the developer.

its rule of thumbish without knowing whose thumb it actually is.

call it a tin foil hat if you like but seeing as it isn't just one person adhering to this thumb rule i doubt it will hold much wait.

what are your gflops and clocks with that 2.11 result?
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post #32512 of 67694
Quote:
Originally Posted by mrlance View Post

One thing I have notcied is running prime and Core temp, it seems the speed goes down instead of up. Same thing on Cpu-z, maybe t's the turbo core function?

That's ultimately why I gave up on Turbo OCing. Under heavy load it always throttled. It was awesome in games that didn't slam the CPU because it'd run at the middle and top clock speeds, but if it got pushed it'd drop to the base clock speed, and throttle down past that due to what I'm guessing was either VRM heat issues or some sort of power consumption limit. I liked the dynamic nature of the design, but it wasn't worth fighting with.

I did find that I could run 2-4 Prime95 threads on custom at 6GB and it'd keep the clocks at the middle and top speeds, which'd give me a "light" stress test. It wouldn't heat up nearly as much, obviously, but that's the beauty of turbo OCing. It takes care of the heat problem by dynamically slowing down when it needs to. It tested the cores at the higher clock speeds they'll run at under moderate load, though, and that's the point.

Just wish I could have got the damned thing working steady under full load. Even sitting at the bottom clock would have been fine, but it kept dropping below it. Maybe I'll try again after I drop an 80mm behind my CPU socket and attach one or two to the VRM heatsink, but we'll see.
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post #32513 of 67694
That sounds interesting indeed. If it would obviously downclock to save on heat when priming, and over clock itself in moderate application, wouldn't that give you the best of both worlds in that scenario? I wonder if keeping it on, dissabling the APM, core c6 state, enabling HPC, and setting the digi to ultra High, if that could optimize the Turbo settings?
post #32514 of 67694
Quote:
Originally Posted by Alastair View Post

Mainly HPC mode and APM. APM = off and HPC = On. Turn off all your power saviing features like C6
one or the other, you dont need both

either apm hpc both on or both off,

if both are on, you will only throttle if your socket hits 72c, with both off you wont throttle, ( speaking of asus boards only ) but you can reach your thermal limit 90c, so if you kill your chip it is your fault, with that said i have hit it several times with no ill effects
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post #32515 of 67694
Quote:
Originally Posted by mrlance View Post

That sounds interesting indeed. If it would obviously downclock to save on heat when priming, and over clock itself in moderate application, wouldn't that give you the best of both worlds in that scenario? I wonder if keeping it on, dissabling the APM, core c6 state, enabling HPC, and setting the digi to ultra High, if that could optimize the Turbo settings?

You'd think so, but you'll run into the same issues with throttling you do if you're running a high-end graphics card with some form of boost - when it runs too hot or draws too much juice, it'll throttle hard, and you'll end up with a big drop in performance followed by a big snap back upward. While on paper you might get higher average FPS that way, your performance consistency will be terrible due to the fluctuations. Normal turbo variance probably wouldn't hurt you (much), but if you're running Prime95-level loads, you might see some of your CPU cores throttling down to a 7x multi - that'll hurt. That was my big issue with a 245MHz FSB. I'd get 4.3/4.55/4.65GHz clocks, but under very high load like that it'd throttle past the 4.3 to 1.6 and bounce that clock from core to core.

It'd probably be a lot less likely to throttle if you spent time fine tuning the voltages for each level of turbo, but I can't tweak them individually on my board. Not sure about others. Running auto offset voltages over volts the chip too much at every level of turbo, which makes it kick off too much heat. For example, running a 4/4.3/4.6 turbo my board set the 4GHz level at 1.4v. My chip runs 4.2GHz at 1.3375v just fine, so 1.4v is overkill.

I think I'll sit down tomorrow night and Prime out an offset voltage at which all the multipliers will be happy. Maybe that'd give me more consistent performance without the throttling problems.

As for turning APM off, it actually disabled the turbo boost functionality on my Asus M5A99FX Pro R2.0. I could run Prime95 without throttling, but it also wouldn't go past the base clock. It was still listed as enabled in the BIOS, it just didn't work.

EDIT: I'll mess with APM again tomorrow, too. Now that I think about it, I've flashed a new BIOS to my motherboard since then, so maybe it'll work properly now.
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post #32516 of 67694
Quote:
Originally Posted by Mega Man View Post

Quote:
Originally Posted by Alastair View Post

Mainly HPC mode and APM. APM = off and HPC = On. Turn off all your power saviing features like C6
one or the other, you dont need both

either apm hpc both on or both off,

if both are on, you will only throttle if your socket hits 72c, with both off you wont throttle, ( speaking of asus boards only ) but you can reach your thermal limit 90c, so if you kill your chip it is your fault, with that said i have hit it several times with no ill effects
I was always under the impression that you want HPC mode on?
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post #32517 of 67694
tried everything with this loop...and narrowed it down to either a defective pump or res... was gunna mock loop every hole, but didnt have enough distilled water and typically saudi shops shut on a friday. Resat pump on the other side, used both outlets...cleaned inner cpu, rad...im at my witts end and this place sucks for custom computer shops. Theres 1 custom shop that has only EK cooling products...doesnt even have Y splitters, or any splitters! Soooo annoyed!!!!! Think I'll leave it for now - get some distilled water and mock loop everything when I can be bothered. mad.gif
post #32518 of 67694
Quote:
Originally Posted by Alastair View Post

I was always under the impression that you want HPC mode on?

This may help you, and anyone else who's still a little confused at what APM Master Mode and HPC Mode actually are for / what their intended use it & how they will effect an OC or day to day running.

http://www.ronwoods.us/2014/02/what-does-amd-application-power.html

This helped me understand it a little better!
post #32519 of 67694
Guys how good is the liquid cooler that came with the FX 8350? I came across an offer for it for Rs 3,000(50$)- http://kolkata.quikr.com/AMD-Liquid-Cooler-Antec-Kuhler-920-W0QQAdIdZ161555540
What's the equivalent of it? I presently have a Hyper TX3 and intend on using that Water Cooler for my FX 6300. I called up the selling and he still has it. Is tghis product worth for the money? What kind of an overclock will it give me?
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post #32520 of 67694
Quote:
Originally Posted by Synister View Post

This may help you, and anyone else who's still a little confused at what APM Master Mode and HPC Mode actually are for / what their intended use it & how they will effect an OC or day to day running.

http://www.ronwoods.us/2014/02/what-does-amd-application-power.html

This helped me understand it a little better!
That writer did a poor job. Looked like he speculated more than he knew. Take with a grain of salt. APM in conjuction with Turbo will throttle solely based on TDP of the CPU and Socket, it is easy to test. My VRMs have heat sink and a CPU fan @100% so I guarantee there is no VRM heat issue and even with that the CPU clocks will jump and dance around immediately upon stressing. Hence I don't use Turbo on my PC ( apparently no APM disable on my board so I guess the Turbo is the APM on/off feature). HPC allows for Idle clocks and Max clocks when load is present. Think of it this way: it adjust Your CPU to run 2 clocks only, idle and max. It is an easy way to circumvent the turbo/APM feature Although if not using turbo /APM then HPC is pointless and therefore un-needed.
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