iMac Pro X299 - Live the Future now with macOS 10.14 Mojave [Successful Build/Extended Guide]

[pieropontra]

Finally "completed" the above build by having top and front rads as exhaust and rear fan as intake (and replaced with a 140mm Noctua 2000RPM high pressure fan).

7900X (non-Delidded) @ 4.2GHz boost on 10 cores, stock 3.3Ghz base (I want to stay below 90c)
Vega Frontier Edition 16GB HBM2
64GB Crucial DDR4 2400MHz RAM @ 2600MHz


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The system deserves better picture mate!

 

[izo1]

The system deserves better picture mate!

My office is a mess, I promise to take better ones soon

 

[MauroM]

Finally "completed" the above build by having top and front rads as exhaust and rear fan as intake (and replaced with a 140mm Noctua 2000RPM high pressure fan).

7900X (non-Delidded) @ 4.2GHz boost on 10 cores, stock 3.3Ghz base (I want to stay below 90c)
Vega Frontier Edition 16GB HBM2
64GB Crucial DDR4 2400MHz RAM @ 2600MHz

What temperatures do you have in idle?
Comparing your scores with mine, with a similar system ...
Radiator is EK-CoolStream PE 360 with 3x Corsair ML120 fans

 

[kgp]

What temperatures do you have in idle?
Comparing your scores with mine, with a similar system ...
Radiator is EK-CoolStream PE 360 with 3x Corsair ML120 fans

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Nice build

but... nearly 105 deg C at 4.5 GHz... this can't be stable for long and is really scratching all temp limits of Skylake-X.. I would reduce OC or add radiator.. can you add e.g. 280mm front radiator?

 

[izo1]

What temperatures do you have in idle?
Comparing your scores with mine, with a similar system ...
Radiator is EK-CoolStream PE 360 with 3x Corsair ML120 fans

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Nice looking build.

Idle is under 40c, and if I go all stock, around 34c.

Stock full load is 56c or so.

Right now I’m at 4.2GHz for boost clocks and I have it around 86c on full load which is good for me since I don’t want the fans to go crazy.

I think you should bring down the OC multiplier to keep it under 94c because anything above that will throttle your cpu cores and is bad for prolonged use.

The additional benchmark scores is not worth the hassle.

If you really want to push it that far you need to delid the Cpu and use condactonaut.

 

[ICEVISION]

Nice looking build.

Idle is under 40c, and if I go all stock, around 34c.

Stock full load is 56c or so.

Right now I’m at 4.2GHz for boost clocks and I have it around 86c on full load which is good for me since I don’t want the fans to go crazy.

I think you should bring down the OC multiplier to keep it under 94c because anything above that will throttle your cpu cores and is bad for prolonged use.

The additional benchmark scores is not worth the hassle.

If you really want to push it that far you need to delid the Cpu and use condactonaut.

I recommend you watch the next video

with the i9980xe processor i was able to drop temperatures from 105 to Under 80 degrees
Only by OverClock UnderVolt the CPU by 0.075

Before watching this video to reach the 80 degree area I had to overclock only to 4.2GHz all cores
At the moment I am about 4.5GHZ at all cores and not passing the 83 degrees on stress
My idle Temp is 24-27 degrees

 

[MauroM]

Nice build

but... nearly 105 deg C at 4.5 GHz... this can't be stable for long and is really scratching all temp limits of Skylake-X.. I would reduce OC or add radiator.. can you add e.g. 280mm front radiator?

Nice build

but... nearly 105 deg C at 4.5 GHz... this can't be stable for long and is really scratching all temp limits of Skylake-X.. I would reduce OC or add radiator.. can you add e.g. 280mm front radiator?

The nice thing about this hackintosh is the fact that what I compiled in 5 minutes with the iMac 5k (2014), now I compile it in 30 seconds, so I never reach high temperatures for more than a few seconds, but the 4.5ghz for those seconds speeds up the compilation , so for now I think I can stay with this setup.

Thanks for the tips

 

[kgp]

The nice thing about this hackintosh is the fact that what I compiled in 5 minutes with the iMac 5k (2014), now I compile it in 30 seconds, so I never reach high temperatures for more than a few seconds, but the 4.5ghz for those seconds speeds up the compilation , so for now I think I can stay with this setup.

Thanks for the tips

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But it would not harm to lower the max. turbo frequency to 4.4 or 4.3 GHz either, as your software apparently nearly never requests full CPU load. And by this you would be at the save side with respect to max. CPU temps.

Up to your taste, my friend

EDIT: However, it might be important to mention that your current custom water blocking, when constantly running your i9-7900 at a max. frequency of 4.5 GHz, implies severe CPU temperature issues and can burn the CPU in the worst case, if the thermal throttling does not take place once. This should be a clear message for all guys reproducing your build and system configuration.

 

[izo1]

I recommend you watch the next video

with the i9980xe processor i was able to drop temperatures from 105 to Under 80 degrees
Only by OverClock UnderVolt the CPU by 0.075

Before watching this video to reach the 80 degree area I had to overclock only to 4.2GHz all cores
At the moment I am about 4.5GHZ at all cores and not passing the 83 degrees on stress
My idle Temp is 24-27 degrees

The 99xx Skylake-X are soldered...the 79xx use crappy TIM.

Also I hate Linus. There’s way better resources out there.

 

[kgp]

The 99xx Skylake-X are soldered...the 79xx use crappy TIM.

Also I hate Linus. There’s way better resources out there.

A soldered 99xx Skylake-X will never reach the thermal properties of a properly delidded 79xx.. we had this discussion a few times already, my friend. Of course one looses warranty by the delidding process. That's the only drawback of the story.