Scarlet-Tech

Delidded last night. Went through the procedure of removing all of the scrap epoxy, applied CLP, fingernail polish to the caps and fresh epoxy to to the ihs. Placed it in a spare board last night and clamped it to sit and cure.

Came home today, after grabbing Petroleum jelly, filled the socket and prepped the cpu, and installed it.

Boot into the bios, and I am at -21c now. That is only 3c difference, but I figure that every single c counts, so why not. Everything booted fine and I actually overflowed the socket a tiny bit by accident, but I figure that it's OK compared to not enough.

Ready to make this old girl my daily driver.

Cool, She should operate with no problems for quite a while.

So far, just brief testing on the cpu. 5.2ghz at 1.45v. Trying to pull the temp and voltage down now. I can not see the temps through software once it hits 0. Anything below and it just stays at 0 or doesn't register at all.

Any tips on a program that I can see below 0, since the bios definitely reads down into the negatives?

Scarlet-Tech
So far, just brief testing on the cpu. 5.2ghz at 1.45v. Trying to pull the temp and voltage down now. I can not see the temps through software once it hits 0. Anything below and it just stays at 0 or doesn't register at all.

Any tips on a program that I can see below 0, since the bios definitely reads down into the negatives?

Outside of a mechanical probe attached directly to the center of the CPU die or evaporator head (similar to how the Kingpin LN2 Pot has a hole at the extreme bottom center for the probe), I haven't found a software program that will accurately read sub-zero temps.
The Only reason I can read the sub-zero temps on my 5960X is that the OC Panel that came with my ASUS RVE motherboard enables those readings.
It is the ONLY motherboard that I have found that can read/display sub-zero CPU temperatures during my Benching Testing.
 
 

Ah ha. OK, sounds good. I will stick with this for now. I pulled back to 50 multi and 101 bclk. At 5.2,it was hitting +16c on one core during Aida 64 extreme stress test.

I figure lowering the clock and temps is OK.

Scarlet-Tech
Ah ha. OK, sounds good. I will stick with this for now. I pulled back to 50 multi and 101 bclk. At 5.2,it was hitting +16c on one core during Aida 64 extreme stress test.

I figure lowering the clock and temps is OK.

That +16C was probably during the highest CPU load test. My 5960X temporarily reaches +22C during various different high CPU load Benching tests with my SS Phase Change and the only way I could improve it would be to A) Go to a Cascade Phase Change, or B) Go to DICE/LN2 Cooling, Neither of which would be suitable as far as I am concerned for extended or 24/7 0peration.
 
Granted, If you wanted to endure higher electric bills or enjoy keeping a constant eye on temperatures and DICE/LN2 levels, Then there are better ways to "Get it Colder". LOL!

:-) I am not sure that the contact with the thermal material is perfect yet. I am also trying to get the voltage figured it as well. Since this is my first experience going this low, I figure I will take my time.

I am pretty sure that the wattage was supposed to be around 300w dissipation for this PC. I didn't think the 4790k would get into the positives. So far, I am at 5.0 ghz 1.409v. Still have more work to do.

Scarlet-Tech
 
I didn't think the 4790k would get into the positives. So far, I am at 5.0 ghz 1.409v. Still have more work to do.

Yeah, Unfortunately Running High Overclocks and Voltages do generate higher heat loads and at some point get the CPU to overwhelm a SS unit.
 
Most SS Units are generally good for up to 300W loads, But using them for modern four, six and eight core CPU's becomes somewhat of a problem, Although they still work pretty well considering they were originally designed to handle the loads for a single-core CPU.
 
Way back at the time I was using an EVGA 790i MB with a LGA 775 QX9770 quad-core CPU which even rated at 136W stock produced a lot more wattage when highly overclocked than the 180W load limit of my old ASETEK Vapochill Unit I was using back in 2008. 

As someone who has only read about phase and has not used or built them before, why is 300W the cap.  Can you make a SS that is 400, 450, 600W or is that impractical for some reason?  Too much power draw or too physically large?

EVGATech_DaveB
As someone who has only read about phase and has not used or built them before, why is 300W the cap.  Can you make a SS that is 400, 450, 600W or is that impractical for some reason?  Too much power draw or too physically large?

Well 300W is the load the phase is tested to cool. A higher load is possible but I think it would start to get very loud and very expensive quickly. A lot of SS units you see are mass produced with a 300W load. Custom ones yes you can get in the 450-500W range but it isn't cheap. At a certain point a single stage is no longer able to keep up which is why SS usually only cools to -40 to -50C on idle. They usually are tested to 300W load at -25C or so.
 
You can get a dual stage to cool 500W load at -75C, which would idle around -100 to -120C, but at that point you're talking massive power draw, extremely loud and power hungry, not to mention hella expensive. I'm not sure of if there's really a xxxW load limit that really can't be passed, just that usually units are built tested with a 300W load.

Halo_003

EVGATech_DaveB
As someone who has only read about phase and has not used or built them before, why is 300W the cap.  Can you make a SS that is 400, 450, 600W or is that impractical for some reason?  Too much power draw or too physically large?

Well 300W is the load the phase is tested to cool. A higher load is possible but I think it would start to get very loud and very expensive quickly. A lot of SS units you see are mass produced with a 300W load. Custom ones yes you can get in the 450-500W range but it isn't cheap. At a certain point a single stage is no longer able to keep up which is why SS usually only cools to -40 to -50C on idle. They usually are tested to 300W load at -25C or so.
 
You can get a dual stage to cool 500W load at -75C, which would idle around -100 to -120C, but at that point you're talking massive power draw, extremely loud and power hungry, not to mention hella expensive. I'm not sure of if there's really a xxxW load limit that really can't be passed, just that usually units are built tested with a 300W load.

Very True Info, My dual stage Cascade I built in 2009 would idle at -100C+, But drop significantly under high benching loads, Not to mention as Halo stated above cost WAY too much to build, required a large electrical power draw and was very noisy under operation which are the reasons why I haven't thought about using it again.
At least with my present SS unit(s) I can still talk to other people in the room without raising my voice!