Z270 Gigabyte Ultra gaming board overclock

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Hi to you all. I have just invested in a Z270 Gigabyte ultra gaming board with 16gb of red 2666mhz vengeance ram, i7700k and an h110i cooler. I would like to know from of you experts on where i should go with overclocking this system. At the moment i am using one of the pre configerd settings at 4.8ghz but don't know how effective that is. I have stressed it with cpu z stress test and going at full load and seems to be working ok. If i should be setting up the overclock myself, can someone please advise what settings in the bios i should use to get 4.8ghz manually. If someone can give me the exact settings in bios i would be grateful. I dont know if its ok to leave it where it is or do it manually. Thanks for any advise
 
Done some overclocking with a Z170 Gigabyte + i7-6700K. If someone comes along who has your board, I'll hand the reins over to them.

Meantime, what maximum Vcore was CPU-Z reporting during stressing, and what temps were you seeing. Run some Cinebench R15 tests as well, it'll come in handy for preliminary overclock testing. Report back with max Vcore and temps.
 
It was going to 1.32 on 100% load. 65 tops on all 4 cores. I just want to know if the pre overclock 4.8GHZ is ok to run and safe to run. I am using the Corsair link so not sure if thats any good. Not looking for numbers and using all these stress test programs, just want something better than stock while using my h110i. Just want a nice boost for Project cars 2
 
It was going to 1.32 on 100% load. 65 tops on all 4 cores. I just want to know if the pre overclock 4.8GHZ is ok to run and safe to run. I am using the Corsair link so not sure if thats any good. Not looking for numbers and using all these stress test programs, just want something better than stock while using my h110i

As you wish. At 1.32v it is surprisingly safe for a factory pre-overclock profile. On the other hand, you won't know if that's the max Vcore you will ever see, unless you run different tests as well (CPU-Z is not the greatest to begin with). But up to you.

1.4v safe for 24/7 clocks, even a little over. Try keep temps under 75C for 24/7 usage too. You can alter the H110i fans profile if needed at some point.

Good luck.
 
Thanks for that. Would prime95 be a better test for this. I used it a lot on my FX8350 with great results

Everyone has different opinions/favourites. But with Prime and recent Intel chips you have to keep a close watch on Vcore/temps, especially if using the AVX test. What's personally helped me find realistic stable overclocks is a combination of Cinebench (for very quick testing) and Asus Realbench. Once I've found a Realbench stable OC, I've only had to add +0.025v for stability across all games, longer Handbrake use (Realbench includes a short simulation of this) etc.

It's been a couple of years since I used Prime so I couldn't even tell you which version is best to use currently.
 
Thanks Danny75 for your help. I will use Realbench as you suggest and look at the differences between the two. In the real world i don't think i will ever go full load on my system while running race sims but its always nice to see what is a good safe margin, like you said, i may tweak the Vcore slightly as needed, the only thing is i don't think you can alter any settings while in a pre clocked mode? i am not sure. I just wanted to ask, is running a factory pre clock ok or is it always better to manually overclock?. Every time i tried going to 48 from 42 and saved and exit, it always reverted back to 42 on the ratio, thats why i used the factory overclock until i know what settings to use manually
 
Thanks Danny75 for your help.

No problem.


TI will use Realbench as you suggest and look at the differences between the two. In the real world i don't think i will ever go full load on my system while running race sims but its always nice to see what is a good safe margin, like you said, i may tweak the Vcore slightly as needed, the only thing is i don't think you can alter any settings while in a pre clocked mode? i am not sure.

That's usually the case. Not sure if some boards have exceptions to that rule.


I just wanted to ask, is running a factory pre clock ok or is it always better to manually overclock?.

Typically the problem with those pre-overclocks is that they pump too much voltage, in order to (try to) account for the very weakest chips and get them overclocked too. That's the main reason why the advice is always find your own (chip's) overclock manually.

1.32v on the other hand sounds very fine but like I said, without further different testing I wouldn't be sure that's the max you'd ever see.


Every time i tried going to 48 from 42 and saved and exit, it always reverted back to 42 on the ratio, thats why i used the factory overclock until i know what settings to use manually

Big jumps like that aren't advisable. For 7700K I'd start with 4.5GHz @ 1.3v, and increase by 0.1GHz each time. Run a quick Cinebench, if it passes, increase, then another quick Cinebench, increase and so on. Till it crashes. Then either lower by 0.1GHz and test with Realbench, or if there's room to increase Vcore and temps are okay you can do that instead and continue climbing.

However, if you don't want to mess too much with that, then just keep the pre-overclock but do run some different tests just to make sure of max Vcore and temps.
 
Cpu z that comes with realbench

Hmm not familiar with a CPU-Z version that shows temps or maximums for Vcore, only current Vcore. HWiNFO64 will give you a lot more info and show mins/average/maxes. It has a clock icon (marked in green in pic below) you can click to reset the values, before each benchmark.

1t93VpJ.png

https://imgur.com/1t93VpJ

https://www.hwinfo.com/download.php
https://www.fosshub.com/HWiNFO.html/hw64_560.exe (Windows 64 Installer version)
 
Ok done some testing with Realbench 2.56. Dropped from 48 to 46 in the pre overclock mode as you suggested. Ran for 30 minutes stress test and also using HWiNFO64 as you suggested. My cpu package is min 24c, max 77-78c, ave 66-70c and 1.260v average. I got 7 Result Hash Match, i assume that is good? After 30 mins i got stress test passed
 
Ok done some testing with Realbench 2.56. Dropped from 48 to 46 in the pre overclock mode as you suggested. Ran for 30 minutes stress test and also using HWiNFO64 as you suggested. My cpu package is min 24c, max 77-78c, ave 66-70c and 1.260v average. I got 7 Result Hash Match, i assume that is good? After 30 mins i got stress test passed

Hi again. :)

Looks good. Just one thing - your temps look high for Realbench. Safe but too high for a H110i and a 7700K and 1.26v. Although it could be the maxes were 0.1 higher. Even so, imo that would be a bit high for that cooler and voltage. Should only start seeing 78C on Realbench once exceeding 1.4v.

Maybe it's just the cooler fans speed. Maybe do a run with the cooler fans at 100% and check the difference, just to be sure the cooler is making a good contact. Then you could lower the fan speed for noise no problem.
 
I have had to mount the radiator inside top of case, no room to mount the fans underneath as they get in the way of the 8 pin, so i have had to mount the fans inside the top part of the case underneath the top cover so in theory they are pulling air through. Should i mount the radiator underneath the top cover and then mount the fans underneath top of case so they are pushing air through radiator?
 
NZXT phantom 530. Another thing i forgot to say, might as well be honest, i plugged both the fans into the fan hub on the case and not on the pump. The case has 3 speeds, i was not to happy with the noise the fans made while plugged into the pump
 
The difference between having the rad in push vs pull configuration will only be a degree or two in most cases,your best connecting the two cans to the cable coming from the pump as then you can use corsair link and control the fan speeds and create custom fan curse which change fan speed in relation to water temp.
 
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