i5 8600k 4.7GHZ Vs 5 GHZ diffrent ?

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issarapan_note

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I oc my 8600k stable @ 4.7 with 1.325 Vcore with fulload around 70c with kraken x62 and i haven't found stable setting for 5GHZ yet.
so my question is @5 GHZ oc will the FPS in game gain significant ?
if it not i'll stay @4.7

Thanks
 

Darkbreeze

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What is your GPU card model?

Most likely you will not see much if any difference between 4.7Ghz and 5Ghz. Probably you won't even see a major difference between 4.5Ghz and 5.0Ghz for that matter.
 

issarapan_note

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Inno 3D X3 GTX 1080ti
 

Darkbreeze

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Is your monitor overclocked or is it brand new? Very few monitors have a 240hz refresh rate.

Regardless, at 5Ghz your CPU is unlikely to have a very long lifespan anyhow. I'd say staying where you are is a good idea and 300mhz isn't going to make any giant performance difference anyway.
 

sizzling

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We'll 4.7 to 5.0 is a 6% increase. Even if everything scaled perfectly and your cpu was the only limiting factor the best you would see is a 6% increase in fps. In reality the gain will be less.
 

urbancamper

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5 years as opposed to 20 years? Most enthusiasts have moved up within this span of time anyway. Mine is at 5.0ghz, but I concede, I may have hit the lottery. As I have it stable at 1.345v. At 1.295 vcore I run stable at 4.8ghz. So yes it is a pretty big jump to get to 5ghz, but still a decent amount lower then the 1.4v considered to be the max voltage you should put on this cpu. The only problem was during stability testing with prime95. It was getting dangerously close to 90c. Since the TJMax is 95c(downgraded from 100C) I thought it best to shut it down after 15 minutes. While gaming the highest temp I have seen is 78c in BF1.

 

Darkbreeze

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CPU might last five years at 5Ghz, but as you say, it's very unlikely that most people are going to achieve a 5Ghz OC using that voltage. With the amount of voltage required for a stable 5Ghz OC, most people are going to almost immediately begin degrading their motherboard voltage regulator components as well as the CPU itself.

Also, if you cannot run Prime95 version 26.6 for 24hrs without exceeding the thermal envelope or crashing the utility then you have neither a stable nor a thermally compliant 5Ghz OC. If you are running versions other than 26.6 which use AVX instruction sets, then it's understandable that you cannot maintain compliance. Try again using 26.6. There is no need, at all, to ensure compliance with the AVX versions unless you will be consistently running applications that primarily use AVX encoding, in which case as a SECONDARY measure, you would or might want to further tune your OC to maintain compliance with those instruction sets.
 

urbancamper

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24 hours on prime is a bunch of hogwash. That Sir, is a thing of the past. If you can run 15 minutes in prime95, run Cinebench, run Aida64, and run 3D Mark all without crashing, keeping the temps below 90c, you are good to go. Oh and I use Version p95v294b5. I also add this line to the local file. CpuSupportsAVX=0 I learned that here at Toms Hardware.

True I shut prime down after 15 minute. But I will tell you what, my stability is solid. Not one of those tests crashed my pc. Also in real world applications, including games and rendering, the cpu will never work as hard as it does in prime95, which as you well know is a torture test. Along with those others I have mentioned.

Ya prime 95 brought me close to 90c and I did not like that so I shut it down. The highest temp I have seen while gaming, and the one vid I rendered is 78c and that is a rarity.

You might say the sky is falling and a system is not stable if not tested for 24. I WILL say, you Sir, are wrong.

My system is stable. I do concede however that I may have hit the lottery with my cpu.
 

Darkbreeze

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You keep believing that. Data integrity is no different now than it was five, seven or ten years ago. Not "crashing" is NOT a determining factor for stability in 15 minute runs. 15 minute runs are ONLY good for checking thermal compliance.

This is known, by virtually every tenured overclocker or serious enthusiast. 15 minutes can't tell you ANYTHING about your stability. With only that amount of time invested in checking the stability your are almost certainly introducing micro-errors and silent data corruption into anything processed and hopefully not of it is mission critical or cumulative in nature.

Silent data corruption due to unstable, or too far out of spec to be acceptable stability, is not new, or old, it just IS. There are no programs I nor any of the other people I talk with who have even more years of experience than I do, and I've been at this since about 1982, know of that can determine ACTUAL stability or anything close to it without at least minimal long term testing. 24hrs is still the standard.

For gaming systems, it is unimportant. You are not worried about cumulative or silent corruption of data because there is rarely anything of long term importance being written or re-written, so it's largely irrelevant. However, it IS a factor for the operating system and supporting files on those types of systems, and for non-gaming work or productivity related applications and data it is a major concern.

There has been clear evidence showing that micro-errors and silent data corruption can account for much of what gets reported as software bugs, faulty device drivers and file or operating system corruption, even on systems that are not overclocked, but at far higher rates on systems that are overclocked without being properly checked using conventional stability testing mechanisms.

Averages are one in every 1016 bits are corrupted on an average test of an stock clocked or stability verified system. On unverified overclocked systems those rates have been shown to be four to twenty times higher. That's fairly recent data too, not just some mythical commentary from twenty years ago.

https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/eurosys84-nightingale.pdf

So, sir, I beg to differ, and factually, I am NOT wrong.
 

nazzo123

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I might be late to this thread but it may be worth tweaking your 8600k to get to 5ghz you never know what kind of results you would have. I have my 8600k at 5ghz@ 1.295v with a notcua D-15 and my processor is delidded. I say I hit the silicon lottery for my chip.
 

urbancamper

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He says 2 months later.

 
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im at 4.8GHz, 1.270 v, 2 avx offset and i used intel burn test @ highest test. temps went up to 86°c but i only game mostly so temps stay around 60°c and idle around 30°c also use a h100i for cooling but might change it out to a noctua d 15s
 
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