passive cooling [Finished] The number cruncher: Triple Xeon passive mineral oil cooling [Update 12: Final pictures and summary]

[Trey222]

On 2/22/2016 at 4:29 PM, Stefan1024 said:

Interim report

 

I got the replace MoBo and this one is marvellous quiet. Also it runns up to 104 MHz BCLK and so I was able to squize out a bit more performance:

 

Those are some pretty amazing numbers for the price. You gotta love old Xeons. Also that is a pretty nice overclock for these chips. Most people can't get them over 101 in the BCLK. Best of luck with the rest of the build.

[Stefan1024]

11 hours ago, B NEGATIVE said:

- snip -

 

Yes, I requested a replacement and I got I new one. This one is silent.

 

7 hours ago, Trey222 said:

Those are some pretty amazing numbers for the price. You gotta love old Xeons. Also that is a pretty nice overclock for these chips. Most people can't get them over 101 in the BCLK. Best of luck with the rest of the build.

 

I refuse to pay 1000$ for a CPU, but like to have a lot of perfromance. I had a look at different configurations and I really like this alternative.

[Stefan1024]

Update 5: 40 kg heat sinks

 

The heat sinks have been delivered today. I could barly lift the packet

 

 

 

 

 

 

[IMPERIUS]

noice

[neebuilda]

On 2/3/2016 at 0:10 PM, Stefan1024 said:

New renderings:

Do you use solidworks to model?

[Stefan1024]

Just now, neebuilda said:

Do you use solidworks to model?

Yes I do.

[neebuilda]

Just now, Stefan1024 said:

Yes I do.

Nice. Been wanting to try it out but still using Inventor with an educational licence due to pricing. Its a shame solidworks don't offer the same thing.

[Stefan1024]

Just now, neebuilda said:

Nice. Been wanting to try it out but still using Inventor with an educational licence due to pricing. Its a shame solidworks don't offer the same thing.

Yes the price is the major downside of this programm.

[Stefan1024]

Just now, ninninon said:

Does it use V-ray as a renderer? Is it basically google sketchup but more advanced?

I do use the build in photo view 360 tool to render. Not sure if it's based on V-ray.

[pagani123]

2 hours ago, Stefan1024 said:

Update 5: 40 kg heat sinks

 

The heat sinks have been delivered today. I could barly lift the packet

 

 

 

 

 

 

 

 

 

 

what material  are the heat sinks made out of and how do you plan on sealing it so no mineral oil gets out 

[colinreay]

Jeez the heatsinks alone are almost as big as me! This is some serious stuff!

[Heesleemer]

how much is that thing going to weigh fully assembled with oil? 

[Stefan1024]

7 hours ago, Maybach123 said:

what material  are the heat sinks made out of and how do you plan on sealing it so no mineral oil gets out 

 

They are made of pure aluminium and black anodized. The surfaces are flat and I can produce a high mounting preasure with the screws I will use. But seal it complitly I will use some silicon gasket.

 

1 minute ago, Heesleemer said:

how much is that thing going to weigh fully assembled with oil? 

 

About 100 kg. It is recommended to take to oil out to move the PC

[Heesleemer]

Just now, Stefan1024 said:

 

 

 

 

About 100 kg. It is recommended to take to oil out to move the PC

eh, ad a bar to it, shouldn't be hard to deadlift =P 

-a power lifter 

[B NEGATIVE]

21 hours ago, Stefan1024 said:

Yes I do.

I also use SW and agree the pricing is.....hard to swallow.....still cheaper than CATIA tho by far.

 

I use the keyshot renderer plug in and use HSMworks for the CAM side.

 

Talking of immersion builds,I used have one of those too but I used Novec 648,It doesnt ruin the board caps like mineral oil. You might want to check it out,its not cheap but better than Flourinert for the environment.

[Stefan1024]

12 hours ago, B NEGATIVE said:

I also use SW and agree the pricing is.....hard to swallow.....still cheaper than CATIA tho by far.

 

I use the keyshot renderer plug in and use HSMworks for the CAM side.

 

Talking of immersion builds,I used have one of those too but I used Novec 648,It doesnt ruin the board caps like mineral oil. You might want to check it out,its not cheap but better than Flourinert for the environment.

The Novwc fluid are made for phase change cooling ind will vaporize around 50°C. This requires a fully sealed case and a condenser.

I'm planing to use silicon oil as it is less aggressive than mineral oil.

[B NEGATIVE]

10 hours ago, Stefan1024 said:

The Novwc fluid are made for phase change cooling ind will vaporize around 50°C. This requires a fully sealed case and a condenser.

I'm planing to use silicon oil as it is less aggressive than mineral oil.

 

Actually,they are not,they are fire suppression fluids and boil at 60c,it uses the same process of heat removal as your oil but is significantly more efficient. The boiling action is the primary heat removal method.

Phase change uses refrigerant gas,not fluid. Common gases for phase are

• R413
• R404a
• R507
• R410
• R22
• R402
• R290
• R600(a)
• R134a

Because Novec vapour is heavier than air,you dont need a fully sealed unit but you do require a condenser unit,easily made however.

The best thing is that your kit is never damaged by it and hardware can be pulled out and be dry by the time it leaves the case,no clean up in the slightest.

 

I look forward to seeing what you finish up with.

 

 

 

[Stefan1024]

3 hours ago, B NEGATIVE said:

- snip -

Whan the liquid evaporates, it will expand and my tank will overflow within seconds. Also the vapor will rise to the surface quickly and does not get in significant contact with the heat sinks build into the walls. My design is not functional with this method.

 

However, this method sounds interesting and will be taken into consideration for a next build. This time around I'm way to deep into the process to make such drastic changes.

[B NEGATIVE]

I totally get that.

 

Shame you are not local,I still have 2 ltrs of 648 left.

[iamdarkyoshi]

Are you planning on putting the oil and stuff under vacuum? I saw on photonicinduction's youtube channel that the oil in his HV transformer is put in there warm and then when the lid is put on it and sealed, the chamber develops a vacuum, sucking the oil into the small gaps in the transformer

[Stefan1024]

20 hours ago, B NEGATIVE said:

I totally get that.

 

Shame you are not local,I still have 2 ltrs of 648 left.

It looks like you have good knowledge on this fluids. Do you happen to have a submerged PC?

 

20 hours ago, iamdarkyoshi said:

Are you planning on putting the oil and stuff under vacuum? I saw on photonicinduction's youtube channel that the oil in his HV transformer is put in there warm and then when the lid is put on it and sealed, the chamber develops a vacuum, sucking the oil into the small gaps in the transformer

I just watched the video.

As the parts are desigend to be air cooled, so "normal" submersion should do the trick just fine. Also I will never be able to seal the case airtight to do this.

[B NEGATIVE]

2 hours ago, Stefan1024 said:

It looks like you have good knowledge on this fluids. Do you happen to have a submerged PC?

 

 

I just tinkered with it mainly,a proof of concept thing,it was.......functional.

It was a case of finding an enclosure that didnt eventually leak,this was a few years ago now tho.

 

Watercooling is my thing primarily,the alternatives are too time/maintenance hungry.

[Stefan1024]

5 minutes ago, B NEGATIVE said:

I just tinkered with it mainly,a proof of concept thing,it was.......functional.

It was a case of finding an enclosure that didnt eventually leak,this was a few years ago now tho.

 

Watercooling is my thing primarily,the alternatives are too time/maintenance hungry.

Nice, do you have a picture?

What did you ended up using for the encousure?

 

Also I don't like maintainance too. I designed the PCs in a way they should not require some.

[Stefan1024]

Update 6: 73 cores, 450 watts, 846 GFlops

 

Xeon Phi on Windows 10 is a freaking nightmare! MATLAB somehow don't use the automatic offlod feature despite it is set to do so. At least the linpack benchmark is using it, so and I know the HW is working. The Xeon Phi uses up to 270 watts ( @iamdarkyoshi : that's the same as the 390X ) but as I was able to salvage the phase chamber from the original cooler I can spread out the heat enougth to handle it.

And when the reported power draw of the PC is increasing by 250 watts you know it is running. But by burning througth that much power, it manages to score 846 GFlops! This may not look impressive compared to a GPU, but keep in minde this are CPU cores. A i7-6600k has about 200 GFlops and we are talking about >3 year old hardware here.

 

Benchmark results.txt

 

 

 

 

 

[thekeemo]

ETA for oil?