After 2 weeks with NH-U12S on i7 8700K. No Complains No Regrets!

[_Hustler_One_]

Earlier I posted some topics about CPU cooler choice for replacing my FSP Windale 4 to cool i7 8700K in a bad PC case. It was 49C idle, 71C gaming with Turbo enabled.

That time I was thinking to get 120mm AIO recommendation, but people here said that it's not worth the upgrade.

After that I tried to get some recommendation for good air cooler instead but not the huge ones in mind.

Someone brought me with SRS, NH-U12S, and even NH-U14S on his list. I take my call for NH-U12S, I purchased it. Just after I made the deal, I found about Thermalright Le Grand Macho RT which I thought it's the better cooling solution than NH-U12S I just purchased, because I assumed that Grand Macho can fit in my case without being too heavy. At that time I was deeply regret my decision.

 

I tried to stay with NH-U12S instead with deep regret inside my bones. I run the U12S on my turbo enabled i7 8700K. It sparked my curiosity to try something further.

I put NF-F12 iPPC 3000 PWM fan to replace the U12S stock fan, OC the 8700K to 4.9 GHz on 1.272v VCore, and GTX 1060 6Gb to 2.15 GHz. Run my favorite game World of Tanks in 1080p fully ultra setting. The temp is only 56C all day long, real smooth 110-125fps eye candy.. Now I must left my regret away..

 

No Complains No Regrets NH-U12S!

 

But I still wondering how can I safely OC 8700K to 5GHz with this little charm and what can I get from the extra clock speed.

Someone advice please..

[Firewrath9]

4 minutes ago, _Hustler_One_ said:

Earlier I posted some topics about CPU cooler choice for replacing my FSP Windale 4 to cool i7 8700K in a bad PC case. It was 49C idle, 71C gaming with Turbo enabled.

That time I was thinking to get 120mm AIO recommendation, but people here said that it's not worth the upgrade.

After that I tried to get some recommendation for good air cooler instead but not the huge ones in mind.

Someone brought me with SRS, NH-U12S, and even NH-U14S on his list. I take my call for NH-U12S, I purchased it. Just after I made the deal, I found about Thermalright Le Grand Macho RT which I thought it's the better cooling solution than NH-U12S I just purchased, because I assumed thet Grand Macho can fit in my case without being too heavy. At that time I was deeply regret my decision.

 

I tried to stay with NH-U12S instead with deep regret inside my bones. I run the U12S on my turbo enabled i7 8700K. It sparked my curiosity to try something further.

I put NF-F12 iPPC 3000 PWM fan to replace the U12S stock fan, OC the 8700K to 4.9 GHz on 1.272v VCore, and GTX 1060 6Gb to 2.15 GHz on 1.250v VCore. Run my favorite game World of Tanks in 1080p full ultra setting. The temp is only 56C all day long, real smooth 110-125fps eye candy.. Now I must left my regret away..

 

No Complaints No Regrets NH-U12S!

 

But I still wondering how can I safely OC 8700K to 5GHz with this little charm and what can I get from the extra clock speed.

Someone advice please..

2 fans on cooler, delidding with liquid metal, kryonaut for cpu, turn house AC to 20c

[Jurrunio]

6 minutes ago, _Hustler_One_ said:

GTX 1060 6Gb to 2.15 GHz on 1.250v VCore. 

how? Pascal cards are limited to 1.09v Vcore

[_Hustler_One_]

5 minutes ago, Firewrath9 said:

2 fans on cooler, delidding with liquid metal, kryonaut for cpu, turn house AC to 20c

No! I put my stock fan to my front panel, I'm newbie in custom PC build. Also I don't use AC in my house. but I'm ordering TG Kryonaut indeed.

Maybe World of Tanks is not so demanding to stretch 8700K

[_Hustler_One_]

1 minute ago, Jurrunio said:

how? Pascal cards are limited to 1.09v Vcore

idk, I just go to BIOS and put 1.250v on it..

[Jurrunio]

11 minutes ago, _Hustler_One_ said:

idk, I just go to BIOS and put 1.250v on it..

cpu vcore and gpu vcore are different things....

[_Hustler_One_]

12 minutes ago, Jurrunio said:

cpu vcore and gpu vcore are different things....

Did I make something concerning? I'm newbie

[Jurrunio]

26 minutes ago, _Hustler_One_ said:

Did I make something concerning? I'm newbie

not really, but it is bugging me out. Motherboard's BIOS cannot control dedicated GPU's voltage, so you either changed the CPU core voltage, or integrated GPU voltage.

 

If you use Afterburner for dGPU overclocking, you need to enable voltage monitoring and control in the settings menu

[LogicalDrm]

57 minutes ago, _Hustler_One_ said:

Did I make something concerning? I'm newbie

Post screenshot of some performance monitor software, like HWmonitor or Afterburner etc. Run heavy benchmarks for several hours to test for max temps and stability. If you are still scared, set CPU shutdown temp from 105C to 90C in BIOS. But after you do stress tests. CPU might shoot for 90C+ under stressing if your cooling isn't enough for voltages.

[_Hustler_One_]

On 8/15/2018 at 3:31 PM, LoGiCalDrm said:

Post screenshot of some performance monitor software, like HWmonitor or Afterburner etc. Run heavy benchmarks for several hours to test for max temps and stability. If you are still scared, set CPU shutdown temp from 105C to 90C in BIOS. But after you do stress tests. CPU might shoot for 90C+ under stressing if your cooling isn't enough for voltages.

What is the best software for benchmarking?

[LogicalDrm]

Just now, _Hustler_One_ said:

What is the best software for benchmarking?

Asus RealBench is good one for CPU testing. From stress tests my favorite is OCCT (from techtubers Jayz and OC3D use it). 3DMark can do also, but imo RealBench is better.

[_Hustler_One_]

On 8/15/2018 at 2:10 PM, Jurrunio said:

how? Pascal cards are limited to 1.09v Vcore

Sorry, it was the DRAM, my bad.. No more debating on this, I admitted I was wrong to mention it was not the GPU VCore but DRAM.. LOL, how can I did this?

[_Hustler_One_]

12 minutes ago, LoGiCalDrm said:

Asus RealBench is good one for CPU testing. From stress tests my favorite is OCCT (from techtubers Jayz and OC3D use it). 3DMark can do also, but imo RealBench is better.

I'll download it, but which is the last version of RealBench? How about Prime95

 

I have tried to go 5 GHz with 1.3v, but I didn't bencmark it, just run with load. Temp is only 58C but it crashed.. I bring it back to 4.9 GHz with 1.275v, and it stabilized there.. Why could this happen? Was it my motherboard which can't handle it? It is MSI Z370 PC Pro

[LogicalDrm]

4 minutes ago, _Hustler_One_ said:

I'm downloading it now.

 

I have tried to go 5 GHz with 1.3v, but I didn't bencmark it, just run with load. Temp is only 58C but it crashed.. I bring it back to 4.9 GHz with 1.275v, and it stabilized there.. Why could this happen? Was it my motherboard which can't handle it? It is MSI Z370 PC Pro

It could be that volts aren't enough. But could also be that mobo can't keep voltages, while 1.3V isn't that high. I don't OC so much that I could say which is more issue. I'm guessing its voltage.

[_Hustler_One_]

5 minutes ago, LoGiCalDrm said:

It could be that volts aren't enough. But could also be that mobo can't keep voltages, while 1.3V isn't that high. I don't OC so much that I could say which is more issue. I'm guessing its voltage.

Is it safe to go more than 1.3v? How high is voltage to be recognize as high and concerning?

[LogicalDrm]

Just now, _Hustler_One_ said:

Is it safe to go more than 1.3v? How high is voltage to be recognize as high and concerning?

That differs between CPU generations and AMD/Intel. For yours 1.3V is considered max for daily use, 1.35V only if you really need it and 1.4V max you should even try. Over that you get very little for the heat it generates. Overall when OCing you should be thinking what is the actual performance gain you need and can achieve. For testing you can always go further than what you eventually end up using. But if you chip can't do 5GHz on 1.3V, it might not do it with 1.35V either.

[Jurrunio]

4 minutes ago, _Hustler_One_ said:

Is it safe to go more than 1.3v? How high is voltage to be recognize as high and concerning?

what does bother me is the motherboard. That VRM doesnt look strong and it could run exceedingly hot.

[_Hustler_One_]

5 minutes ago, LoGiCalDrm said:

That differs between CPU generations and AMD/Intel. For yours 1.3V is considered max for daily use, 1.35V only if you really need it and 1.4V max you should even try. Over that you get very little for the heat it generates. Overall when OCing you should be thinking what is the actual performance gain you need and can achieve. For testing you can always go further than what you eventually end up using. But if you chip can't do 5GHz on 1.3V, it might not do it with 1.35V either.

 

3 minutes ago, Jurrunio said:

what does bother me is the motherboard. That VRM doesnt look strong and it could run exceedingly hot.

Noted! I will just stay with 4.9GHz on 1.275v. I will benchmark it now for the 1st time since I build this PC..

How long should I benchmark it to be ideal?

I'll post the result later..

[_Hustler_One_]

Why RealBench shows my RAM speed is 1333 MHz but actually I enabled the XMP and it run it on 2666 MHz via BIOS???

[Jurrunio]

1 minute ago, _Hustler_One_ said:

Why RealBench shows my RAM speed is 1333 MHz but actually I enabled the XMP and it run it on 2666 MHz via BIOS???

because DDR = double data rate, sending data twice per clock cycle. data rate is 2666MHz, but I/O itself runs at 1333

[_Hustler_One_]

30 minutes ago, Jurrunio said:

because DDR = double data rate, sending data twice per clock cycle. data rate is 2666MHz, but I/O itself runs at 1333

OK thanks for the info..

 

On 8/15/2018 at 3:31 PM, LoGiCalDrm said:

Post screenshot of some performance monitor software, like HWmonitor or Afterburner etc. Run heavy benchmarks for several hours to test for max temps and stability. If you are still scared, set CPU shutdown temp from 105C to 90C in BIOS. But after you do stress tests. CPU might shoot for 90C+ under stressing if your cooling isn't enough for voltages.

Just crashed on Video Encoding test.

CPU 4.9 GHz, 1.280v VCore, 1.264v DRAM, GPU 2.1 GHz. CPU temp 72C max.

Show me some direction please..

[Jurrunio]

1 minute ago, _Hustler_One_ said:

1.264v DRAM

maybe this one too low. Try 1.35v since many kits between 2666 to 3200 default to that voltage

 

otherwise, raise the Vcore a bit.

[_Hustler_One_]

14 minutes ago, Jurrunio said:

maybe this one too low. Try 1.35v since many kits between 2666 to 3200 default to that voltage

 

otherwise, raise the Vcore a bit.

will try..

 

I did 2nd benchmark without make any changes, still with same state and done it with this,

avg CPU temp is 64-67C

 

 

I just reapplied the thermal paste on the CPU from NT-H1 which come with the cooler to the TG Kryonaut today.

[LogicalDrm]

23 minutes ago, _Hustler_One_ said:

OK thanks for the info..

 

Just crashed on Video Encoding test.

CPU 4.9 GHz, 1.280v VCore, 1.264v DRAM, GPU 2.1 GHz. CPU temp 72C max.

Show me some direction please..

That would be unstable OC RealBench is really good as unlike other stress tests/benchmarks, it simulates real world scenarios. So that test would mean that you are gonna crash while encoding some video editing project. Temps are still good, so its just tweaking with volts to find balance.

[_Hustler_One_]

3 hours ago, LoGiCalDrm said:

That would be unstable OC RealBench is really good as unlike other stress tests/benchmarks, it simulates real world scenarios. So that test would mean that you are gonna crash while encoding some video editing project. Temps are still good, so its just tweaking with volts to find balance.

So I raised the volts to 1.290v VCore still with 4.9 GHz, and DRAM 1.3v

my NH-U12S with iPPC 3000 PWM hits 3014 rpm when holds the max temps,

here's the result:

 

 

So what does my System Score value say about?