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post #52301 of 67694
Quote:
Originally Posted by mus1mus View Post

And your point is?

You do understand it's your words against a widely accepted practice right?
tongue.gif

Yes, but most people do it because they saw some review of some AMD chip from 2006 and decided it's relevant.

When a CPU is using most of it's power, it's not in a power saving state, so I still don't know how it would cause instabilities. I run in offset mode too, that's "frowned upon" by overclockers because the early implementations in mobo's sort of had issues. But that's not relevant with a decent mobo from the past few years.
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post #52302 of 67694
Quote:
Originally Posted by ShrimpBrime View Post

Once you overclock manually, Most boards automatically shut this (C1E) off, and sometimes can make Cpu voltage unstable, yet close to manual setting.

You also can overclock with "green" enabled and enjoy cooler temps from the automatic throttling. The simplest way to do this is by overclocking the reference clock only, leaving Cpu multiplier and "green" on auto.

Also know that if you take Cpu voltage off auto, and run reference clock only, that this may also disable the processors ability to ask for required Pstate VID voltage causing an un-stable system if you push too far. However it works pretty well with some light overclocking IE: 3.2ghz to 3.4ghz typically this small overclock requires very little voltage increase.

Mmm... I've been trying to figure out why my 8320e only bobs between the highest and lowest speed. It throttles from 4.5 GHz to 1.4 GHz, no in between steps. CnQ on, C1E on. Turbo off. Voltage in offset mode so it reduces voltage during throttling. C6 State off. HPC mode on. APM Master Mode off.
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post #52303 of 67694
Quote:
Originally Posted by umeng2002 View Post

Mmm... I've been trying to figure out why my 8320e only bobs between the highest and lowest speed. It throttles from 4.5 GHz to 1.4 GHz, no in between steps. CnQ on, C1E on. Turbo off. Voltage in offset mode so it reduces voltage during throttling. C6 State off. HPC mode on. APM Master Mode off.

Yep that's normal.

Now if your where reaching thermal limits say 65c socket temps, you'd see that max clock lower to the next p-state down, like on mine it would go from 4.7ghz to 4.5ghz first. If it was still running too warm, it would utilize the next p-state down being 4ghz and then I'd see that pstate voltage of only 1.412v instead of the occasional 1.5250 at 22.5x multi and up.

So even though at 22.5x multi and the VID request is still 1.5250v, it does keep in check. Remember when you add clocks, it adds heat even without extra voltage. It works in reverse too. Lower clocks without lowering voltage it will also lower heat output.

Since your temps are under control, you see it jump from idle 1.4ghz to your 4.5ghz clock.

To test it, you could turn the fans down or even off to try and witness the P-states in action. (load the cpu fully) That's how I did it. I think I shut down all but 2 fans on my two rads. 8 in total, right now I'm only running 6 to help keep the noise down.
post #52304 of 67694
Here's an example of a small overclock green on with turbo enabled.

Witness Cpu-z slow voltage pulls. It's a good second behind the frequency jumps.

post #52305 of 67694
Quote:
Originally Posted by Alastair View Post

I DID IT! Thanks to you Cssorkinman I have taken the HW record for dual AMD Radeon HD6850's!You made it possible! My 6850's will go out with some fight after all!

1080 Mhz core 1250MHz memory 5.25GHz on the CPU 2400mhz 9-10-12-31 1T 2700NB 2700HT and all that netted me a score of 2020 so far! Hell yes! +REP for the assist man!

haha nice one thumb.gif

Sorry i assumed you had tessellation disabled (as it's legal to do so with AMD) for the test tongue.gif
 
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post #52306 of 67694
Quote:
Originally Posted by ShrimpBrime View Post

Yep that's normal.

Now if your where reaching thermal limits say 65c socket temps, you'd see that max clock lower to the next p-state down, like on mine it would go from 4.7ghz to 4.5ghz first. If it was still running too warm, it would utilize the next p-state down being 4ghz and then I'd see that pstate voltage of only 1.412v instead of the occasional 1.5250 at 22.5x multi and up.

So even though at 22.5x multi and the VID request is still 1.5250v, it does keep in check. Remember when you add clocks, it adds heat even without extra voltage. It works in reverse too. Lower clocks without lowering voltage it will also lower heat output.

Since your temps are under control, you see it jump from idle 1.4ghz to your 4.5ghz clock.

To test it, you could turn the fans down or even off to try and witness the P-states in action. (load the cpu fully) That's how I did it. I think I shut down all but 2 fans on my two rads. 8 in total, right now I'm only running 6 to help keep the noise down.

Ah, thanks for explaining that.
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post #52307 of 67694
Spoiler Alert: (Click to show)

Caused a bit of a stir. wheee.gif
post #52308 of 67694
Quote:
Originally Posted by ShrimpBrime View Post

Yep that's normal.

Now if your where reaching thermal limits say 65c socket temps, you'd see that max clock lower to the next p-state down, like on mine it would go from 4.7ghz to 4.5ghz first. If it was still running too warm, it would utilize the next p-state down being 4ghz and then I'd see that pstate voltage of only 1.412v instead of the occasional 1.5250 at 22.5x multi and up.

So even though at 22.5x multi and the VID request is still 1.5250v, it does keep in check. Remember when you add clocks, it adds heat even without extra voltage. It works in reverse too. Lower clocks without lowering voltage it will also lower heat output.

Since your temps are under control, you see it jump from idle 1.4ghz to your 4.5ghz clock.

To test it, you could turn the fans down or even off to try and witness the P-states in action. (load the cpu fully) That's how I did it. I think I shut down all but 2 fans on my two rads. 8 in total, right now I'm only running 6 to help keep the noise down.
only thing I don't agree with is 65 isn't socket max before throttle...on my saber it doesn't throttle till around 82c on socket
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post #52309 of 67694
Maybe it is due to APM, Power Savings stuff and CNQ Enabled.
post #52310 of 67694
Quote:
Originally Posted by mus1mus View Post

Maybe it is due to APM, Power Savings stuff and CNQ Enabled.
maybe...but why would it downclock so early and under load...that doesn't sound right
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