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Going to have to run a battery of tests. Whatever you do, do NOT run small FFT AVX prime95. Only use AVX as I instruct here below..

First, download prime95 29.4 https://www.mersenne.org/download/
Run it then close it then open the file LOCAL.TXT and add these lines at the top:

CPUSupportsAVX=0
CPUSupportsFMA3=0

Grab HWinfo64 (another nice program) while you're at it and have it running the same time as prime95). https://www.hwinfo.com/download/
Now you can do some more reasonable tests.

First do a CPU core reliability test by doing a small FFT stress test. This will put a strong load on your CPU without it getting out of control. Don't let it run 12 hours. I personally find that you don't need to let it run more than 30 minutes, as it can test the entire 8k-16k range by then. But if you really want to be sure, you can run it an hour. Have the program HWINFO64 running and look at the bottom for WHEA or CPU L0 errors also.

If that passes, now do a Vcore reliability test by running a custom test, checkbox "run FFT's in place" and enter 1344K-1344K for the range.
This stresses vcore stability more than heat stress. You absolutely MUST pass this test. 1 hour is enough for this. Half hour if you're in a hurry.

Then when you're done, you can stress the computer's IMC and main memory by doing a custom test, uncheck FFT's in place, and enter range 512K-4096K and set the memory size to 75% of your system memory. Example: if you have 32 GB of RAM, the total is 32768, so set it to 24576. For 16 GB, it's 75% of 16384. Ezpz.

This test will take much longer to do. Might have to leave it running overnight as this tests a lot of ranges now.

Finally, you should test the AVX stability test. This is similar to the 1344K test.
Open the file local.txt and change the 0 to a 1 for AVX.
Do not change FMA3.

Then run the same 1344K (don't forget to checkbox in place fft's) and it will run with AVX. This may run a bit hotter than small FFT without AVX (oddly enough it runs cooler on a 9700K and 9900K), so let it run for up to an hour.

Always monitor HWinfo64 for WHEA errors or CPU L0 errors if a thread doesn't crash.

This will take you awhile. Post your results when finished.
Wow this is wonderful haha

Should I run each one of these tests after each change in my OC?

Or should I run only the individual test associated with the change?
(ie small fft for core ratio changes, fft 1344 in place for voltage changes, custom fft for imc and memory changes?)

I just passed all of those tests with [email protected] with everything else in bios stock. Should I manually enter my memory ratings and skip right to the custom 512k-4096k test or start at the beginning?
 

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I betcha it is the AVX offset parameter that is set on your system.
If the x264 stress test does AVX workloads, then the CPU will lower its multipliers as not to generate too much heat. This offset can be set to 0 in the BIOS. Then normal and AVX workloads all run at the same multiplier.

This is why many people stress test with Prime95 26.6 small fft, which does not use AVX workloads, instead of the newer Prime95 versions.
I may be dumb, but I'm not that dumb. If that was the case I would have had an AVX offset of like 8! I did figure it out finally. The bios on this board seem to force the cpu back down to base clock multiplier (42) whenever it hits any instability if turbo boost is enabled, and any kind of multiplier overclock requires that setting to be enabled. I got around this with 125x40 or 122x41 core clock. This of course was unstable I'm only now learning. Turns out you really do get what you pay for with motherboards. That or I have a really awful bin.

Actually it's starting to look like my fclock was also causing instability.
 

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I am testing and stressing my Asus Z270 IX Apex with a I7 7700k and using Rog RealBench to stress test if stable..How long should I let RB run for to test for stability..I just did a 30 min test and it stopped with errors after 5 min.I upped the core volts a bit and it was successful after the 30 min run..Should it run longer than 30 min for testing stability..Any suggestions..
 

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I am testing and stressing my Asus Z270 IX Apex with a I7 7700k and using Rog RealBench to stress test if stable..How long should I let RB run for to test for stability..I just did a 30 min test and it stopped with errors after 5 min.I upped the core volts a bit and it was successful after the 30 min run..Should it run longer than 30 min for testing stability..Any suggestions..
I would test 1-4 hours to make sure it is stable.
 

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One to Four hours..Thanks a bunch...
 

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Hi All,

Here's my entry:
CPU Model: i7-7700k
Base Clock: 100
Core Multiplier: 50
Core Frequency: 5.0
Cache Frequency: 4.5
Vcore in UEFI: 1.35
Vcore: 1.378
Fclk: 1
Cooling Solution: DEEPCOOL Gamer Storm Captain 240EX Delidded
Stability Test: x264 16T infinity normal 9hrs

Batch Number: Malay L639G012
Ram Speed: 2666 15 17 17 35 2T
Ram Voltage: 1.35
VCCIO: N/A
VCCSA: N/A
Motherboard Z270 MSI Gaming M3
LLC Setting: N/A
Misc: No AVX Offset; Also tried Prime95 25.11 for 3hrs but no screenshot.
 

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submitting my 7700k results
1.55vcore at 5.3 ghz
on msi z270 gaming m7 motherboard
full liquid metal under and on ihs cooled on nh-d15
i can probs do 5.5 ghz after i get a custom water cooling loop using the nude cnc waterblocks
 

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Hi guys, i need some help to try hit the 5GHZ OC in my i7 7700k, is @4.8ghz with 1.32v 24/7 for 3 years with no issues, temps going on 75-80º on a full EK watercooled with a rtx 2080 ti in the loop too... with so many new cpu´s with high single core scores i think i need to get a little bit more and try to keep "cold". I will get Ryzen 3 or 11th for sure but this 7700k needs to game a few more year... I have everything in auto, only vcore (1.32v) and multi has been changed to 48, the memory´s are 3600mhz CL16 but i can´t boot them in that speed on this motherboard (Asus Strix Z270E Gaming) so they are @3333mhz... I know this is a old threat but adding more 200mhz can help to catch up ryzen 2 cpu´s in single thread...
 

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I have the same motherboard and set everything to auto. I am only able to achieve 4.9ghz with an avx offset of 2, so 4.7ghz stable. I am planning to delid my chip to see if it will help. Will post an update when that happens.

Update: delided my 7700K with liquid metal and I'm able to overclock to 5ghz temps are around 75c. The voltage I have to use pretty high reaching 1.4v.
 

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Really need some help please!

Got myself a new GPU (GTX 2060 super) but struggling to get high fps on warcraft and such.
Looked around, supposedly it could be my CPU bottlenecking, the i7-770k.
So I've tried to overclock it for a few hours now, before buying a new CPU.
I've downloaded programs such as CPUz and Prime95.
I've changed a lot of different settings in my BIOS that I've found over the net. Countless times.
In Bios it says I'm running at 4400mhz, clock speed even.
CPU-Z says I'm not even at 1600.
Can somebody please help...
Link to some screens from CPU-z:
Gyazo
Gyazo
Gyazo
 

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CPU-Z says I'm not even at 1600.
The CPU Frequency will fluctuate depending on workload (CPU Utilisation). If it is low enough it will downclock to lower clock speeds.

I believe the speeds are in steps of 800 starting from 800.00 MHz (lowest power state when PC is idling) then it goes up in increments until it reaches the turbo boost (or desired overclock multiplier).

TL-DR: When running anything CPU intensive or demanding such as games CPU clock speed should go higher than that.
 

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How much more voltage do you usually need on 7700k on average to get stable after booting into Windows. Just looking for a roundabout idea.
 
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