I thought this was relevant to the discussion of voltage versus temp:

 

 

Very relevant. And thanks for posting. Looks like excessive voltage can indeed kill a CPU when you cold boot. Due to voltage spiking. That answers my question regarding the capability of the thermal monitor to cut in quick enough to save the CPU. 

 

Depends how old his CPU was though. It may have been at the end of it's lifespan anyway and the voltage issue he had was the straw that broke the camels back.

 

The moral of the story is that if you suspect your voltage is creeping up way too high, for whatever reason, power down your system and clear the CMOS. Don't power up again until the CMOS is cleared.

I run 5ghz on my I7 6700k with 1.36v to the CPU. 

 

 

Very nice.

 

Is that with HT on or off? What cooling and what sort of temp in a stress test?

 

Delidded?

He run a AMD 8320 at +1.5v with a looks like evo 212.

package temp over 60 did he say 67?

 

benched a lot of AMD last year , the protection is not as Intel can be tricky and wellknown that amd die with high voltage and package temps over 60C

 

What he did was like run the KabyLake at 1.6v , the max safe with aircooling on a 8320 is 1.45v

 

My FX8320 live , i dont boot in at a higher voltage than 1.45 on a AMD CPU regadless of cooling

that one i bench with watercooling max 1.47v 5.3ghz and with extreme 1.97v ( 8.47ghz cpuz)

 

AMD APU.s is even worse , if you boot in at 1.45-1.5v very high risk for them to suddenly die.

 

Jay have good reputation but in this case he dont do his homework.

Thanks Hasse, that's put it into the proper perspective.  :smile:

 

As you said previously, "it's very hard to kill a CPU".

 

Very true. And that's of course why Intel are prepared to sell overclocking insurance. They wouldn't do that unless it was indeed, hard to kill a CPU.

 

 

What I will say is that in your case, you didn't just switch from HT off to HT on, you also upgraded your PC from an i5 to an i7. You don't say if you overclocked or not, and how much with the i5 and how much with the i7 [that too is a variable.] but the i5 has a lower base frequency and turbo frequency. And of course, you may have switched to a new architecture entirely, new, faster RAM, new chipset etc. My point is that there's a myriad of variables at play.

 

Hi Martin,

 

You bring up some important and valid points, of course.  I should have been more thorough yesterday... my 3570K was running at 4.6 GHz and then I built (my current) 4790K, which started at 4.6 GHz overclock.  The 4790K was my first HT CPU but I nevertheless tried running with HT off (because that is what I knew and was comfortable with).  I still had some stuttering, although not as bad as the 3570K (no doubt the extra 2MB of cache and faster memory in the 4790K system helped).  The stuttering was dramatically decreased once I enabled HT and started dedicating cores to add-ons like AS and the GTN.  Now I don't really see "stuttering"... what I get is a flippin" pause any time I come within 16.5 miles of any Orbx add-on airport! :smile:

 

I agree there are a myriad of variables at play.  Which in the end is what will make me stay with a HT CPU... it will always have more options, flexibility, and processing capability than a core i5.

 

Regards,

 

Greg

Fair enough Greg, as I say, if it works for you and you're as sure as you can be that you aren't being fooled.

 

Have succumbed to the placebo effect many times myself in flight sim. What we need is some kind of utility that not only measures frame rate but automatically detects stutters/smoothness too. Then we could eliminate subjective opinion as a variable and know for sure.

Very nice.

 

Is that with HT on or off? What cooling and what sort of temp in a stress test?

 

Delidded?

 

That is with HT off. With HT on I get about 4.8 with 1.325 to the CPU. I cant get it stable above that for some reason with HT on. It isnt delidded, I just use ThermalGrizzly Cryonaut liquid metal cooler and a pretty hefly watercooling loop. Temps are about 55c under full load in stress testing but max out around 48c with the sim running. 

What we need is some kind of utility that not only measures frame rate but automatically detects stutters/smoothness too. Then we could eliminate subjective opinion as a variable and know for sure.

 

Martin surely you have not forgotten this marathon thread:

http://www.avsim.com/topic/477057-a-frame-time-analysis-of-p3d-v3-effects-of-cpu-affinity-frame-lock-and-ht/page-1

 

FRAPS plus a graphing app.

 

gb.

MSI afterburner , fps and frametime graphs

Run the graph and set on top you se what is happen in real time.

When i check overclocking ( that Its linear to OC ) i change the clock on the fly .

Have Asus OC Panel to clock you se the Impact on OC on the graph ,

That is with HT off. With HT on I get about 4.8 with 1.325 to the CPU. I cant get it stable above that for some reason with HT on. It isnt delidded, I just use ThermalGrizzly Cryonaut liquid metal cooler and a pretty hefly watercooling loop. Temps are about 55c under full load in stress testing but max out around 48c with the sim running. 

 

 

So whats the temp with HT on? If it's 55 with it off then it should be about 65 with HT on. So you seem to have quite a bit of thermal margin. Is it not stable with HT on even with higher voltage? 

 

Is that a custom loop then?

Martin surely you have not forgotten this marathon thread:

http://www.avsim.com/topic/477057-a-frame-time-analysis-of-p3d-v3-effects-of-cpu-affinity-frame-lock-and-ht/page-1

 

FRAPS plus a graphing app.

 

gb.

 

 

 

 

"Forgotten it"... never seen it before. But then I wouldn't, as I've not been interested in Flight Sim for some time.  :smile:

 

Now Elite Dangerous Horizons... now you're talking. I'd destroy your silly Flight Sim plane is an atosecond with my fully kitted out Vulture and it's pulse lasers.  :Big Grin:

Now Elite Dangerous Horizons... now you're talking. I'd destroy your silly Flight Sim plane is an atosecond with my fully kitted out Vulture and it's pulse lasers.

 

And at five times the frame rate I guess....

 

go.

And at five times the frame rate I guess....

 

go.

 

 

 

Ha, yes indeed. Ultra high settings and last time I checked well above 50 frames per second most of the time. That's with my 6700K @ 4.6. EVGA GTX 980 Ti.  :smile:

Good day guys,

 

I've just received my 7700K and i'm trying to OC it.

 

First time with OC in my ASUS viii Ranger but not first time with OC. I overclocked in the past so no first timer.

 

I have modified BIOS and have a entered a 48 multiplier to start with but my BIOS changes in windows don't appear.

 

CPUZ recognize the multiplier but it mantain a maximum of 44.

 

Should i disable or change any security option?

 

Thx

 Follow this guide bellow. There may be a variance in your MB options but basic principles apply. 

 

https://rog.asus.com/articles/guides/guide-overclocking-core-i7-6700k-on-the-maximus-viii-extreme/

 Follow this guide bellow. There may be a variance in your MB options but basic principles apply. 

 

https://rog.asus.com/articles/guides/guide-overclocking-core-i7-6700k-on-the-maximus-viii-extreme/

 Thank you but i have done everything that guide and other guides says.... but it didn't worked.

 

I disabled Turbo, Powersaving disable, EIST, C1E....

 

CPUz and other software receive my settings, but i cant go more than 42 multliplier. That's the only thing it doesnt detect.

 

 

I have modified BIOS and have a entered a 48 multiplier to start with but my BIOS changes in windows don't appear.

 

I have the ASUS viii Ranger and overclocked just with the Asus suite software.

You do not have to touch the bios at all.

Why not re-set bios to default, overclock with Asus suite and then tweak bios if necessary?

 

gb.