Overklokk GPU cascade

**Overklokk** · 10-01-2005, 02:25 AM

Hello

I am building a GPU cascade for Stoolman and look at this setup

The compressor on stage 1 is a Danfoss FR11 and on stage 2 is Danfoss NL11F. The HX is 15ft 3/8" with 3/16 inside.

On stage 2 i made a suction line HX that is cooling the R1150 down before it goes too the HX.

My temp meter on HX inn and HX Out only can read down too -50c. After that it crap out and show only L.

So i guess that HX temp is about -50c ......

Look at this picture.... nice temp?

I wil load test it later today on a FX55

**skate2snow** · 10-01-2005, 02:45 AM

Very impressed as always by your work overklokk

. Very neat and awesome performance.

BTW : I wasnt very good with english when I came here.... And others corrected me... I liked it

... So just one thing I saw..... too = also to = at.

**kemod** · 10-01-2005, 03:45 AM

Impressed by your HX temp. What gas do you use on 1st stage?

**kemod** · 10-01-2005, 03:56 AM

Just notice the 2nd stage suction line HE, it certainly helps to get lower HE temps but I wonder if it hurts the 2nd compressor due to higher suction temps (too much 2nd stage gas superheat) - furthermore you haven't put a load tester on evap so the high superheat effect haven't appear yet.

**the_new_guy** · 10-01-2005, 04:19 AM

really nice.
what graphic card do you plan to cool.

**Overklokk** · 10-01-2005, 04:22 AM

Hawe tested it on a FX55 Claw now @ 3200Mhz 1,7volt.

This is idle in windows

This is load when i run SuperPi 8M

My HX temp load was -48c inn and -46c out. I run stage1 on a mix of r507 and r290.

I realy think that this baby wil hold good temp on my friends Stoolman's X850 XT-PE

**Overklokk** · 10-01-2005, 04:29 AM

Originally Posted by the_new_guy

really nice.
what graphic card do you plan to cool.

Tnx.

He is going too cool a X850XT-PE

**the_new_guy** · 10-01-2005, 04:34 AM

amazing temps

**kemod** · 10-01-2005, 06:26 AM

Excellent temps! I love it!
Your on load test prove the suction HE is a good idea (not hurting the compressor)
I think I should steal the suction HE idea to get better condensing temp on 2nd stage gas, but I'll place it after the main HE instead.

**jinu117** · 10-01-2005, 08:23 AM

DT200 supports 2 temps... where did another probe go? :P Considering sweet temp of 2nd stage, I would love to see temp of first stage.

**piotres** · 10-01-2005, 08:31 AM

Does that FR11 have mineral oil ? What model is it exactly ?

Peter

**Overklokk** · 10-01-2005, 08:33 AM

Originally Posted by jinu117

DT200 supports 2 temps... where did another probe go? :P Considering sweet temp of 2nd stage, I would love to see temp of first stage.

i dident hawe more than one probe for the DT200

**Overklokk** · 10-01-2005, 08:36 AM

Originally Posted by piotres

Does that FR11 have mineral oil ? What model is it exactly ?

Peter

it was mineral but i cange too esteroil for the r507. The model is: Danfoss FR11 103 if i remember corect. It is from a R12 unit.

**berkut** · 10-01-2005, 09:59 AM

Your temps are insanelly low for the loads !

**Overklokk** · 10-01-2005, 10:29 AM

Originally Posted by berkut

Your temps are insanelly low for the loads !

yes it is

think this is the best cascade i eva make and its only for a GPU

**JacobHansen** · 10-01-2005, 01:24 PM

Hey Overklokk

How is the priceing on such a cascade ?..

**Overklokk** · 10-01-2005, 01:37 PM

Originally Posted by JacobHansen

Hey Overklokk

How is the priceing on such a cascade ?..

I cant say it here

YGPM

**JacobHansen** · 10-01-2005, 02:03 PM

Whoops - sorry.!

**piotres** · 10-01-2005, 02:24 PM

Originally Posted by Overklokk

it was mineral but i cange too esteroil for the r507. The model is: Danfoss FR11 103 if i remember corect. It is from a R12 unit.

Have you gargle that FR11 twice with new POE, or just you had poured out oil mineral and put the same volume of fresh POE oil ?

Awesome temps ..specially that -46*C on loaded HX is just mad with that rather "weak" comp ..

...

Do you sure to you probe accuracy (specially that white thermo

) ?

Regards
Peter

**Overklokk** · 10-01-2005, 02:59 PM

Originally Posted by piotres

Have you gargle that FR11 twice with new POE, or just you had poured out oil mineral and put the same volume of fresh POE oil ?

Awesome temps ..specially that -46*C on loaded HX is just mad with that rather "weak" comp ..

...

Do you sure to you probe accuracy (specially that white thermo

) ?

Regards
Peter

I take out all the mineral and filed it with POE. Then i let ir run for 2 minits and change oil again

The white thermo is not the best but its realy good down too about -45c.... The DT200 is good. I testet with another one too se if it read the same temp and it did

Tomorrow i wil troe a Tupe K probe on the HX too se the real temp

**cold_ice** · 10-01-2005, 03:20 PM

These are awesome temps, very good work!

**Overklokk** · 10-02-2005, 12:40 AM

I tested it again today and this time with a real tempmeter on the HX

This is inn and out of the HX with only stage 1 running

This is when stage 2 is pulling down the evap temp

And finaly all tree temps

**<Wouter>** · 10-02-2005, 01:37 AM

Nice temps

**piotres** · 10-02-2005, 01:50 AM

What are all pressures on both stages loaded ??

**Fast** · 10-02-2005, 04:02 AM

very nice,impressive temp from hx,good good job

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