Can someone please help me get 5.0GHz from my 7700k?

Hotwired said:
I seem to have the same cpu and cooler combo as you.

I'm running 1.4v adaptive, 5.0 and an AVX offset of 3 so when Prime95 runs it is stable at 4.7 but anything else it will reach 5.0

So with AVX offset capping at 4.7 it reached 57 degrees with a min temperature of 17 degrees (was in kitchen overnight) for over 13h in prime with AVX

Currently doing Realbench hitting its max of 5.0 and its reaching 56 degrees

Main difference is that I did delid my chip, cleaned it up, used liquid metal, superglued it down again and used liquid metal as cpu paste also.

Probably gonna whack the kit back on the MM where I got it since I'm not going to use it ever again and its really easy.
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What settings do you use for avx on prime? I ram a test and instantly hit 100 degrees on one core and 90 on the rest at 4.8Ghz on a custom loop 8pack delid 7700k. I tried 4.5Ghz and hit 90 degrees on one core. Both times I instantly shut the test off.

Prime version 26.6 runs fine obviously
 
It's not in Prime its in my BIOS

Theres an AVX setting so when the CPU is asked to deal with AVX instructions it caps the overclock at a lower frequency - one you know is stable.

Literally called AVX offset. Mine is at 3 which = 300MHz so normal OC limit is 5 and when AVX stuff comes along it caps at 4.7 then back to 5 when the AVX is gone.

I don't know what your cooling is exactly but mine is a Kraken X41 which is basically a 140mm single fan rad at maximum speed for this benching lark.
 
RipGroove said:
I'm actually quite happy at 4.9GHz for now as it seems to handling everything quite well with decent temps. I've not done any video rendering yet though, I have a video waiting to be transcoded using Handbrake so we'll see what happens when I get round to doing that. I think I read that Handbrake uses AVX instructions?
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I don't know, I don't use it myself but I have been using Realbench which is a bundled and automated cluster of programs running preset tests and one of them is handbrake. The CPU doesn't auto drop to 4.7 so I don't think it is using AVX or at least the preset its running isnt.
 
niro750 said:
What settings do you use for avx on prime? I ram a test and instantly hit 100 degrees on one core and 90 on the rest at 4.8Ghz on a custom loop 8pack delid 7700k. I tried 4.5Ghz and hit 90 degrees on one core. Both times I instantly shut the test off.

Prime version 26.6 runs fine obviously
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What voltage are you running, its either very high or you need to remount the cooler, or possibly even the TIM on the die, thats way too hot for 4.8

Unless you use programs that utilise AVX why run it?? Just puts loads of heat into the cpu and can potentionally degrade your cpu if temps are too high. Use Real bench for stabillity testing
 
I've held off going from 4.9GHz at 1.35v because 5.0GHz seems to need 1.4v on my chip BUT I got brave today and gave it the 1.4v and so far it seems happy enough.

At 5.0GHz it passed 45mins of x264 stress test with 83°C MAX during the stress test.

Seems fine gaming so far too, hovers around 70-75°C in my most CPU heavy game (Squad).

I'll keep an eye on the temps under load during gaming/rendering etc for a while to see how it is for normal use.
 
M
RipGroove said:
I've held off going from 4.9GHz at 1.35v because 5.0GHz seems to need 1.4v on my chip BUT I got brave today and gave it the 1.4v and so far it seems happy enough.

At 5.0GHz it passed 45mins of x264 stress test with 83°C MAX during the stress test.

Seems fine gaming so far too, hovers around 70-75°C in my most CPU heavy game (Squad).

I'll keep an eye on the temps under load during gaming/rendering etc for a while to see how it is for normal use.
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My CPU is the same. I prefer to run it at 4.9 on lower vcore. Temps aren't an issue, delidded and custom WC loop. All cores peaked at 66 degrees C after an 8hrs of Realbench.
 
Well strangely yesterday I decided to leave all my other settings the same at 5.0GHz and slowly drop voltage by 0.01 increments (testing with 30mins of x264 in between) and now it's somewhat stable at just 1.35v with a peak temp of 80°C during stress and 60-70°C during gaming. So far for me passing a small x264 test has proved a good test for how I use my system, if it can pass a 30min x264 test then it will happily game for 3hrs straight, encode a video in Handbrake for 2hrs and render a video in Vegas Pro 13 for an hour so I'm happy so far.

I ran out of time but I 'might' be able to go even lower on the voltage to lower temps even more.

So now the question is, should I enable an AVX offset of say 200-300Mhz so as not to run my CPU at 80°C for prolonged periods while encoding and rendering videos? I mean, usually I walk away from the PC anyway in those situations so adding a little more time to the encoding & rendering isn't a big deal for me. The increased temp probably isn't worth the extra speed in those situations. I'm happy with 60-70°C peak while gaming at 5.0GHz.

At some point I can see me feeling very brave and delidding this CPU, never done anything like that before but apparently it makes a big difference on this generation, and I guess it'll keep my temps and therefore fan noise down a bit.
 
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Well thanks for the help lads, we kind of reached 5.0GHz and I'm pretty happy with it. As a complete OC noob I deffo learnt a few things from you!

It passes an hour of x264 stress test and just about peaks at 80°C (temps are obviously much lower during gaming). I've not really found a need to stress test it for any longer as its handled everything I've thrown at it so far for general use.

It handles GTAV all maxed out (MSAA x2 to keep the FPS up) at 3440x1440 and returns 70fps minimum at ALL times.

It transcodes video fine in Handbrake.

It renders videos fine in Sony Vegas Pro.


The only thing is, I've had to turn Hyperthreading off to keep the temps down during a Cinebench or x264 stress test. I generally turn HT off anyway for gaming so it's not that big of deal for me personally and reading online HT adds about 10-12°C under load so obviously if I'm hitting 80°C with it off then it would hit 90°C+ with on! :-(

I guess I kind of got lucky with the chip itself but I assume what's letting me down is my Thermal Interface Material.
 
I've been following this thread with interest. Glad you finally got there.

I don't have the same setup as you but am pretty new to OC myself but have also had an OCD to get it to 5.0Ghz. I've currently got it running at 4.9 on 1.275 Voltage, its water cooled and my temps on prime95 hover around 76 so I think (in my noob world) its capable of a bit more.

If I stick it up at 5.0 and try to get it stable by increasing the voltage my temps go through the roof (85+).

I'm sure there's a balance to be found but I cant do it sadly
 
Pretty sure I had the same problem too at first, 4.9 was OK but 5.0 was just too hot, in my case it probably worked in the end due to a combination of messing with my radiator fan profiles and turning Hyperthreading off.

I think also LLC played a big part as I seem to remember I had that set to Auto which was pumping too much voltage in alltbe time and creating heat. Setting it to 5 allowed me to run a lower voltage that didn't drop under load.
 
RipGroove said:
Pretty sure I had the same problem too at first, 4.9 was OK but 5.0 was just too hot, in my case it probably worked in the end due to a combination of messing with my radiator fan profiles and turning Hyperthreading off.

I think also LLC played a big part as I seem to remember I had that set to Auto which was pumping too much voltage in alltbe time and creating heat. Setting it to 5 allowed me to run a lower voltage that didn't drop under load.
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I tried all the LLC profiles and it works better on 6, gives me the least temps... im stuck though now
 
Applications that use multiple threads will be slower, such as video editing and rendering. Most games do not make great use of multiple threaded CPU's so for me personally switching off Hyperthreading in BIOS has potentially slowed down video editing and rendering but has allowed me a higher OC which helps games perform better. I do more gaming than I do video ending and rendering so it makes sense.

Google any applications or tasks that you do regularly to see whether they utilise multiple CPU cores and benefit from Hyperthreading or not.
 
RipGroove said:
Applications that use multiple threads will be slower, such as video editing and rendering. Most games do not make great use of multiple threaded CPU's so for me personally switching off Hyperthreading in BIOS has potentially slowed down video editing and rendering but has allowed me a higher OC which helps games perform better. I do more gaming than I do video ending and rendering so it makes sense.

Google any applications or tasks that you do regularly to see whether they utilise multiple CPU cores and benefit from Hyperthreading or not.
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Hmmn not sure I like the Idea of turning stuff off like that.. you're right of course i got it to 5.1 @ 1.35 with temps less than 80 stressed with Prime95 didn't encounter any issues but i'm not sold on turning it off .... I think this chip is decent though by the looks of it...
 
It all depends what you do with your CPU, if using multi-threaded applications a lot then of course you'll benefit from having Hyperthreading ON. Personally I do more gaming than I do anything else so the higher clock speed outweighs the Hyperthreading.
 
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