i7 7700k oc and water cooling

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lingarajug

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Dec 21, 2013
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built a new pc and have few questions.

1. Asrock z270 ext 4 mobo.
2. i7 7700k delidded and gelid extreme 4 used all over and cooled by corsair h70i v2. oc'd to 5.1ghz at 1.344v.temps stay around 73 at max with aida64 extreme stability test.
3. 16gb corsair vengence 2400 ram in dual mode
4. seasonic prime gold 650w psu.
5. evga gtx 1070 ftw gpu
6. corsair spec o3 case

now i am upgrading to phantkes enthoo pro m case and also planning on xs-pc watercooling, my questions are as follows.and i want this to be last upgrade for few years.

1. will i need a 240 or 360 rad in order to better cool cpu and may be gpu also in the future.
2. if i use thermal grizzly conductonaut for tim will it be better.
2. or should i stick with curent set up and upgrade evga hybrid cooler for my gpu when its back in stock and i plan to oc gpu later on.
3. and can i oc my cpu anymore or is this good enough for most day to day, i play 3 hours a day with oculus rift vr games at high settings and few pc games when available but mostly vr.

thank you.
 
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4Ryan6
I can definitely answer your LLC questions, but I would have to spend time researching the ASRock Z270 Extreme 4 LLC BIOS settings

I am running an ASUS Maximus IX Hero motherboard and I am not directly familiar as to how ASRock has their LLC settings set up in the BIOS so.

Go here and learn, these guides are great, plus you can search through the information of those listing their 7700K overclocks and find comparable settings with others that may have the same hardware as you're running.
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4Ryan6

4Ryan6

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For you to be able to run 5.1ghz with a single rad at 73c like that is impressive.

Regarding the Phanteks Enthoo Pro case I bought one last Christmas for my wifes machine and the head room above the motherboard is very limiting as to exactly what you can fit up there, yes it will take a 360 rad but the thickness of the rad is important if you want everything inside the one case. I suggest you investigate the possibilities vs your plan as to whether you want fans on just one side or both sides of your radiator. I also suggest if you like running the 7700K at 5.1ghz do not add a GPU in the same loop or get ready to say Adious to the 5.1ghz OC.

Take a look at the https://www.hardocp.com/article/2016/10/10/corsair_carbide_series_air_740_cube_case_reviewCorsair Carbide Series Air 740 Cube Case, if you want to see one used click my link in my sig.
 
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lingarajug

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Thank you 4ryan6, I have already purchased enthoo pro m so its late now to change case, however I plan to install xs pc 360rad upfront with bottom hd mounts removed and 5.25 also removed as well and then custom loop both cpu and gpu and you said not to, I can't understand why not, can you be little more specific. Thank you.
 
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rubix_1011

rubix_1011

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He is saying that if you add the GPU into your loop, you are adding thermal load as well...the GTX 1070 is about 150-170w at stock, give or take a handful of watts. It isn't a huge amount considering the horsepower the card has, but you have to account for the added thermal load, or your CPU load temps will be higher than what you are seeing...my recommendation would be to at least add another 240 rad to the cooling loop if you wish to maintain similar temps.
 
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lingarajug

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I thought a 240rad would be sufficient enough to cool them, except when testing for oc the cpu or gpu don't run at that high frequencies and I don't use any apps like encoding or other hihigh end stuff just gaming, so given that would 240rad be enough, and another question, so I decided to reduce voltage a little to cut back on heat and set v core at 1.330 fixed mode ( don't know how to set offset voltages), and ran aida64 stability at 5.1ghz cpu and it ran fine for 25 minutes with temps around 73 to 75 and v core in hwinfo64 showing as constant 1.328 and it crashed after that (if I set it at 1.335 v core would occasionally jump to 1.44 and come back down immediately to 1.328), I am determined to keep v core below or equal to 1.330, so if I change short duration and long duration power limits or other settings ( pls enlighten me) will I be able to achieve stable oc. I might consider upgrading to 360rad down the road, thank you.
 
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4Ryan6

4Ryan6

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You can do even better voltage and temperature wise by dropping down to 5.0ghz @ 1.245v and use Fixed voltage and experiment with your (LLC), Load Line Calibration settings to get the best Operating System voltage numbers. 5.1ghz is great but not if you are not 100% stable, you can corrupt your HDD data. Dropping to 5.0ghz should get you below 70c temperatures, and give some more longevity to the CPU.

It's important that you understand that you overclock as your cooling allows, and that is simply a fact of CPU design, I don't care if it is Intel or AMD, the hotter you run that CPU overclocked the less life expectancy of the CPU. Many do not care about that, I think you do?



 
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lingarajug

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I absolutely want this to be my last stable build for at least next 10 years as I just use this for occasional gaming and mostly vr (I might be overzealous here). And I do care about the life expectancy to be as long as possible, I have kept the cpu at 5 and v core at 1.280 but it was not stable, anything less than 1.298 makes it unstable so I had to make the choice of going to 5.1 as its stable at 1.335 at either speeds, so how do I play with LLC never did it before, and is long duration and short duration power limit any important, and there are several other settings like vccio in my bios and do they make any difference, I am going to do some reading about them, and last one shoild I enable speedshift as it states that hardware will control sleep states rather than OS if I enable that? If I am not using heavy applications that can take advantage of my i7 cpu will my cpu ever run on full load for long time,as it might not be necessary for cpu to run at full speeds for current daily use general applications.
 
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4Ryan6

4Ryan6

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I can definitely answer your LLC questions, but I would have to spend time researching the ASRock Z270 Extreme 4 LLC BIOS settings

I am running an ASUS Maximus IX Hero motherboard and I am not directly familiar as to how ASRock has their LLC settings set up in the BIOS so.

Go here and learn, these guides are great, plus you can search through the information of those listing their 7700K overclocks and find comparable settings with others that may have the same hardware as you're running.
 
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