i7 4770k stable at 4.5 GHz, tips for pushing 4.6?

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Meltdown19k

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Mar 2, 2010
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Hello all,

I have my 4770k overclocked to a stable 4.5Ghz at 1.24v and long load temps peaking at 75-77c depending on the core and I'm looking to try to push 4.6. It's actually stable down to 1.21v, but I overclocked my 780 and when I'm running both (Witcher 3) I blue screen unless I up the vcore to 1.24. I have my LLC set to level 2 (RE: "level 2" not sure if this is just an asrock motherboard term) and my offset set to .01v (setting it to zero turns it to "auto).

My overall question is if anyone has a tip for going to 4.6 while keeping my load temps. I don't want my temps to go higher than this.

I listed my LLC, my offset and my GPU overclock because they are all things I know factor into voltage and temps, but I don't really understand them beyond my fiddlings. For example, is there a way to make my GPU overclock not crash my CPU at 1.21? That way I could use those 0.03v to potentially get to 4.6 without increasing heats.

Any tips would be appreciated.

Edit: To be clear, I reach 75c doing stress tests and rendering images. I think playing Witcher 3 I peak at 65c. My idles range between 29-35c.
 
Solution
SkylerJacobs
Run the actual stress test in Realbench while monitoring temps. Image rendering alone will not ensure stability of the system with the CPU and GPU overclocked.

Have to set the time aside to do the testing =P I did the 2nd 8 hour test overnight, as i was fairly sure that with the slight bump in voltage the system was completely stable.
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Derza10

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You are getting 77c temps while just gaming? That seems too high to me, that is about the temps you should see while running a stress test, What is your CPU cooler? Why are you trying to push your CPU for 100Mhz , is your CPU running close 100% and not giving you the performance you need/want?
 
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anoori9000

anoori9000

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He could have a high ambient temp that's driving his temps up too though. I was thinking that temp was high too.
 
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anoori9000

anoori9000

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That depends on your voltage, not just on your speed.
 
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Meltdown19k

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Sorry, not gaming, doing stress tests and rendering images. I think playing Witcher 3 I peak at 65c. My idles range between 29-35c.

I'll add that to the main post.

I'm not seeing any performance issues, I'm just wondering if I can get 4.6 GHz out of the same voltage by optimizing my settings a little. I DO render images a good amount (I use 3Delight), so I do reach 100% CPU quite frequently.
 
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Meltdown19k

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I use RealBench and occasionally prime95. Small FTTs on p95 push me beyond 75c, but the stability is still sound. As for length, I generally run the Realbench for 15 minutes when tweaking things. When I make a big change I do a couple of hours with prime-95 blend.

I'm comfortable using RealBench as my heat benchmark because it is uses LuxRender, another rendering engine I've dabbled with, and produces temps and load almost identical to my peak use cases.

Edit: @Derza10, I'm using the Corsair H100i set with a push/pull out of my case. Fans set to performance mode.
 
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SkylerJacobs

SkylerJacobs

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Love realbench <3.

For how long did you stress test the overclock for? I have gotten a BSOD after 7 hours when i was attempting to get my voltage as low as possible for my overclock. Just saying, don't assume its stable after 1-2 hours. A full 8 hour test is recommended if you plan to run the overclock 24/7. Very time consuming though to do a full 8 hour stress test, have it fail, make a small tweak to the voltage, and run the test again.
 
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Meltdown19k

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I find that my image rendering is a good way for me to test my stability. I had it at 1.21v and I would BSOD up to 1.24v while doing ~15-20 minute renders. I had my videocard overclocked but more-or-less idle while doing that, though. I'll have to play around with that.

Maybe I'll run a test over night. Any utilities you know of that I can set to shut my computer down if my cores go above, say, 90c? My main fear is that I'll cook my processor while I sleep.
 
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SkylerJacobs

SkylerJacobs

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Run the actual stress test in Realbench while monitoring temps. Image rendering alone will not ensure stability of the system with the CPU and GPU overclocked.

Have to set the time aside to do the testing =P I did the 2nd 8 hour test overnight, as i was fairly sure that with the slight bump in voltage the system was completely stable.
 
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Stupidmouth

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There should be a setting in your BIOS where you can specify a certain temp threshold that if your cpu reaches it shuts down automatically.

And as for what another poster said - its true. I ran a 4 hour realbench test on my OC, passed. I decided to run it again overnight for 8 hours and it bsod'ed as I was getting ready for work in the morning 7hrs and 25 mins in.

If i were you I'd roll with what you got!!
 
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