Help to OC my 6600K

That's looking good. You may find the little voltage fluctuation on vCore is an anomaly with the software. Open CPU-Z and see what that shows as the benchmark runs?

If it can handle 5 runs of that benchmark then it's probably stable. A little bit of gaming will also give it a good test, Witcher 3, BF4.

Temps are looking fine, what's your cooling solution there?
 
A matterhorn pure cpu cooler. 2 phanteks case fans at the front, no fans at the rear.

I had cpuz open too. Can it do a log of the vcore? It was hard to see the program window with realbench popping up screens all over the place.

Really appreciate the help.
 
danlightbulb said:
A matterhorn pure cpu cooler. 2 phanteks case fans at the front, no fans at the rear.

I had cpuz open too. Can it do a log of the vcore? It was hard to see the program window with realbench popping up screens all over the place.

Really appreciate the help.
Click to expand...

You're welcome.

I just bought one of those coolers and it won't fit in my case :mad:

The voltages are fine, I would keep the log window opened and get some testing done. If you want to start the whole Prime95 thing then it's up to you, but I prefer to test the PC with things I'll actually expect it to do. Video encoding (Realbench) and gaming.

Given that you're air cooling, I would settle for that OC. If you do get a blue screen crash, you've got plenty head room to increase the vcore without exceeding 75-80c. It would surprise you how quickly temperatures would rise if you started to push the multiplier and voltage from this point.
 
Ive just completed 5 runs of the benchmark. The HWmonitor output is almost identical to the first one I posted above.

Re your question about fans. No, I asked for advice on this on these forums when designing my build, and I was advised to get the phanteks case which came with two fans, but to move the rear fan to the front. So that's what I did.

I have a question about voltage. If you look at my HWmonitor screenshot above, the 12V voltage reading is not 12V. In fact right now, unloaded, its around 2V. Call me thick lol, but shouldn't the +12V readout be reading 12V?
 
Which case is it?

Don't worry about the 12v reading, it's a software glitch. The PSU will be outputting 12v steady else you wouldn't be typing on that PC right now!
 
Phanteks P400. I really like it. My first build, and it was easy to manage the cables and get everything together. I was going to buy a cheaper one but the forum advised that one and I'm glad I went with it.
 
It's a nice case, good choice.

However, you need to buy a 120mm fan and fit it to the back pulling air out. Your GPU must surely be dumping a load of heat in there which will build up as your gaming session progresses. Also, you need some airflow around the motherboard VRM.

It'll be £10 well spent.
 
Tempted to knock mine down now, had it at 4.6Ghz with a vcore of 1.37-1.38v but it's failed the second run of benchmark, don't think there is much else I can do. May run the same tests at 1.4v tomorrow see what I get but I'm not hopeful. If that fails it'll be back to 4.5Ghz for me!
 
A follow up question please.

Ive noticed that bus speed is automatically varying in CPU-Z. Only by small amounts, between 99.95 and 100.1 MHz. Is this something I should set to manual in the BIOS and fix at 100 MHz?
 
Hi guys.

I'm not sure but I think my overclock might be causing an issue.

I am having a screen glitch problem. Essentially I get a flicker of distortion across the screen, fractions of a second long. It does it when Edge browser is being used, and also yesterday when I was using Libreoffice working on quite a large (22Mb) word file. Using Edge the other day I was getting the screen totally go black for a second before returning.

I have gone back to default settings in the BIOS and so far have not had a glitch appear, although it's early days.

I would appreciate some advice on how I can start problem solving this. It's a brand new system so I need a troubleshooting method somehow so I can eliminate hardware, the overclock, the RAM etc. I'm still using the iGPU, does this cause issues if OC'ing the CPU?

Thanks
 
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I have made my own thread but have just noticed we're attempting the exact same overclock!

Here's my result from 1 pass of RealBench. I am also using the Matterhorn Pure cooler.

2016_07_12_2.png


Notice I am getting the same 0.016V fluctuation in the Vcore as you are. My bus speed also varies slightly.

It's quite amazing just how similar our results are :p
 
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Right Ive started testing the system with Prime95 to see if anything errors.

I first tested with all the BIOS settings at stock. Ran for 10 minutes, no issues, CPU temps around 42 degrees.

I am now running a test just with the RAM XMP profile loaded. Interestingly CPU temps just from this one change (no CPU OC) are now around 60 degrees. I didn't expect this just from the RAM profile. Is it normal? I am also getting screen glitching. I think my issue is RAM related, although Prime95 is saying the tests are passing.
 
Its not the cable. Its fine normally, am only getting this glitching when I'm doing something on the system i.e working on something.

I'll try memtest now.
 
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