Watercooled!!

tokamac · 09-01-2002, 04:03 PM

At 3am Sunday morning EST I cranked up my first watercooled system!!! I am so stoked... Here is the setup:

Danger Den Maze3 1/2"
to 5/8" Tubing outside computer and the cooling tower
The distribution manifolds are made of 3/4" PVC to the 3 parallel heater cores...

Eheim 1250 pump....

Throughput: 2gpm (bucket/time testing method)
Coolent Temp: 27 C (input)
Cpu Temp. 33C
Ambient: 23 C
Fan: Rotron 235CFM.... however i have it turned down to just audible for these temp readings, it is way to loud at 235CFM

CPU: AMD 1800XP @ 1667Mhz, 1.8V, 133X12.5

All temps were taken after 3 hours of running SETI@home

Here is a picture of the top of the cooling tower under construction:

EDIT: moved image to link...

Heavy_Equipment · 09-01-2002, 04:29 PM

Way to go.

It's an awesome feeling the first time you fire up your H2O system.

tokamac · 09-02-2002, 03:49 PM

Heavy_Equipment,
Yea I am still putting the finishing touches on the system now, however,
I have been trying to push my system and it just will not do anything better than 1667... whenever I pick a multiplier above 12 things are screwy... 13 results in 12.5, 14 results in 4, 15 results in 5 multiplier... have you ever heard of this problem? Maybe not all of my L1's are connected properly... however they look fine to me, wacha think?

And I when I try to up the FSB I can only do 166@1000Mhz or 140@1540Mhz I did notice that the voltage regulator chips/caps around the CPU were too hot to touch for more than 5secs... And one time the whole system just bliped off during a FSB experiment... I cranked the voltage up to 2V during these experiments. maybe my psu is too weak... only a 300W...

Tokamac

Heavy_Equipment · 09-02-2002, 04:08 PM

When I switched to the 430 watt Enermax, from a generic 300 w, I gained around 150 MHz, so I would say yes, start there.

As for the multipliers, yes I have seen where 13 gives a 12.5...it was an older board ...my A7V I think, that didn't support the newest cpu's though. I have never tried 14 or 15 before, so I can't say. I use lower multi's and higher fsb, for the memory throughput.

Check the MB maker's web site for a bios update maybe.

tokamac · 09-02-2002, 04:13 PM

thanks I guess I'll be upgrading my ps soon...

oopse my L1's link in the previous post was wrong... I just fixed it...
I updated the bois night before last and retested the system to the same results...what do you think bout the really hot caps/voltage regulators... I am thinking of getting some thermal epoxy and put some heatsinks on them...

Tokamac

Heavy_Equipment · 09-02-2002, 04:17 PM

Not trying to be a smart ass, but did you do the "Load optimized defaults" thing after the flash?

...and that is almost the best looking L1 job I've ever seen.

tokamac · 09-02-2002, 04:25 PM

um... oopse... no... do I "have" to do that I didn't really wanna have to go back and reset everything... but hold on I'll do it now..
Thanks

Tokamac

tokamac · 09-02-2002, 05:33 PM

damn, well that did not help... I almost lost the bios (the first time I tried it I used the Alt+F2 method and 3/4 of the way through I heard this big beep and the whole computer restarted... so then that flash was toasted and the only thing I could do was boot from a floppy and reflash (I was sweating bad during that little experience...) now I can only go as high as 11.5 (default of the chip) I used to be able to get 12.5 (when I set the multiplier on 13) I wonder if the conductive paint peeled or something? Anyway here are the multiplier results:

6 thru 10.5 No post
11 ok
11.5 ok (default for chip)
now the wierd part...
12 = 11
13 = 11.5
14 = 5
15 = 5.5

Tokamac

tokamac · 09-02-2002, 08:03 PM

OK update:
1800xp@ 1830 (11x166FSB) 2.0V
CPU = 38C
much better...

Heavy_Equipment · 09-02-2002, 08:38 PM

That sounds better.

tokamac · 09-02-2002, 09:08 PM

Heavy_Equipment,
How do you get your voltage so high? 2.5V! I have the exact mother board and the options only goto 2.2V... and I am still having the multiplier problem... however I am extremely pleased with the FSB overclock... I am worried about how hot these devices are getting (painted in red...) have you checked them on your board?

EP-8K3A+

Edit: moved large image to link...

MadDogMe · 09-03-2002, 02:47 AM

Mosfets!, they (correct me if I'm wrong!) controll the voltage to keep it level. Are they ALL getting hot?. on my mobo they're 5volt & 1.75(c~core) i think.
Are the volts fluctuating alot when you O/C?.

Would doing the 5volt mod(wires to centre leg/pin) help you think?.(i'd imagine it's the 5v's getting hot, as that's the first to get screwy when I O/C)

Heavy_Equipment · 09-03-2002, 06:46 AM

Quote:

PC2700, 181.53 FSB @ 2.5 Normal

Sorry for the confusion...that's CAS 2.5

My OC is limited by this DDR now, as I had to slow the ram down to get to this speed, and that is what I was trying to show.

I'm actually at 2.0 vcore.

Didn't mean to hurt your brain.

tokamac · 09-04-2002, 12:10 AM

I see I have to run mine at 2.05V now to keep it stable... But those mosfets/voltage regulators are getting real hot... I have noticed on some of the newer mobo's out there that some of them have heatsinks on them.
However no the voltages are not fluctuating much 5V is a bit low at 4.7V

And of note I think if I cool some of those down I may get a lower CPU temp. since that much heat can't help but travel down the leads to the CPU? what do you think? And of course the advantage of lowering the intrinsic electronic properties of the chips.

Tokamac

pHaestus · 09-04-2002, 12:19 AM

I noticed that an Epox 8kha+ I had would not work reliably witha vmod and high speed XP until I cooled the mosfets. I pointed a powerful fan at them to verify that solved the problem, then I put some ramsinks and a quiet case fan as a permanent solution.

tokamac · 09-04-2002, 12:25 AM

I think that will be my next course of action... however there are some of those buggers on the back of the board too!!! (now where is my Dremel...

Tokamac

Kevin · 09-04-2002, 03:12 AM

Quote:

Originally posted by MadDogMe
Mosfets

While success always varies, I have seen people put heatsinks on these to get a slight boost in FSB. MSI actually put a heatsink as standard on their mosfets on one of their boards (don't remember which).
-Kev

jamicon · 09-04-2002, 05:58 AM

i remember back in the days of the Abit KT7 people got better o/c by putting little sinks on them.

you could also get a fan like this to mount onto them:

although something with a little more hight would work (like this, only mounted so it blows directly on the MOSFETS

MadDogMe · 09-04-2002, 06:47 AM

I would'nt like to jam my case up with that stuff!, I'd put the biggest passive heatsinks on that I could fit if it was an issue.

Do you think it might be cause the PSU is only 300watt?. would an 'irratic' flow of energy produce more heat?.

You'd think that being aimed at OKers' that they would put a better rated Mosfet in there would'nt you?. can you swap them out for ones better rated?...

tokamac · 09-04-2002, 07:11 AM

probably, however on mine the center terminal is cut and the back plate is attached to the board (maybe that is where they planned on moving the heat, through the board itself

)
So this is the million dollar question:
Has anyone tried to watercool the voltage regulators too? (I am guessing that they are responsible for stepping down the 5V PS voltage to the other required voltages of the mobo: 1.75 (or higher

) / 3.3V CPU, 2.5V memory, 1.5 AGP ect...

Heavy_Equipment · 09-04-2002, 07:11 AM

Quote:

OKers'

I guess that would be us over-klockers?

I'm not at home right now, so I can't say how the mosfets feel on mine. I am a firm believer in the bigger PSU being an answer.

I just remembered that when I switched to the 430 watt, it was on the Iwill XP333...also a "3 phase" board.

I gained about 150 Mhz, and a boat load of stability after that.

I'll let you know about my mosfets at 180 fsb/2.0 volts later.

MadDogMe · 09-05-2002, 06:06 AM

Mine are cool , but thats default speed on a KX7r. not alot of help for an Epox!, it is also 3~phase as well.
I don't think the Mosfets step down the power rather than keep it level, cause the 5volt mosfets have 5volt into them. the middle leg is always cut/missing. (you can solder a 5v wire direct to the middle 'stump' to help 5v rail stay @ 5v, rather than 4.82(which my KX7 is @) ). I don't know how the V~core mosfet works, they must be 'kinda' variable, seeing as it ranges from 1.60 to 2.20+ .

I definatly think you need a 400watt PPPSU @ the least to seriously 'OC' (Doh!!

) nowadays, with the power draw of these T~birds, T'breads & Paliminos...

HeavyGear!, are you using a dehumidifier to chill?, if notwhat?...

tokamac · 09-05-2002, 08:40 AM

Yea I am planning on upgrading the powersupply, however that is an expense I had not counted on (actually there were many, many unplanned on expenses/ trips to home depot throughout my watercooling project) So I am gonna have to wait a bit before I upgrade...

Tokmac

Kevin · 09-05-2002, 08:47 AM

What kind of memory do you have? I just bought an 8K5A2+ w/ 512mb Corsair PC3200 CAS 2

+ an AIW 8500 128... Can't wait to get that all loaded up.
-Kevin

Heavy_Equipment · 09-05-2002, 09:33 AM

Yup, dehumidifier.

It's not the coldest chiller on the block, but I have fun with it.

09-01-2002, 04:03 PM	#1
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	Watercooled!! At 3am Sunday morning EST I cranked up my first watercooled system!!! I am so stoked... Here is the setup: Danger Den Maze3 1/2" to 5/8" Tubing outside computer and the cooling tower The distribution manifolds are made of 3/4" PVC to the 3 parallel heater cores... Eheim 1250 pump.... Throughput: 2gpm (bucket/time testing method) Coolent Temp: 27 C (input) Cpu Temp. 33C Ambient: 23 C Fan: Rotron 235CFM.... however i have it turned down to just audible for these temp readings, it is way to loud at 235CFM CPU: AMD 1800XP @ 1667Mhz, 1.8V, 133X12.5 All temps were taken after 3 hours of running SETI@home Here is a picture of the top of the cooling tower under construction: EDIT: moved image to link... Last edited by tokamac; 09-04-2002 at 07:14 AM.

09-02-2002, 03:49 PM	#3
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	Heavy_Equipment, Yea I am still putting the finishing touches on the system now, however, I have been trying to push my system and it just will not do anything better than 1667... whenever I pick a multiplier above 12 things are screwy... 13 results in 12.5, 14 results in 4, 15 results in 5 multiplier... have you ever heard of this problem? Maybe not all of my L1's are connected properly... however they look fine to me, wacha think? And I when I try to up the FSB I can only do 166@1000Mhz or 140@1540Mhz I did notice that the voltage regulator chips/caps around the CPU were too hot to touch for more than 5secs... And one time the whole system just bliped off during a FSB experiment... I cranked the voltage up to 2V during these experiments. maybe my psu is too weak... only a 300W... Tokamac Last edited by tokamac; 09-02-2002 at 04:09 PM.

09-02-2002, 09:08 PM	#11
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	Heavy_Equipment, How do you get your voltage so high? 2.5V! I have the exact mother board and the options only goto 2.2V... and I am still having the multiplier problem... however I am extremely pleased with the FSB overclock... I am worried about how hot these devices are getting (painted in red...) have you checked them on your board? EP-8K3A+ Edit: moved large image to link... Last edited by tokamac; 09-04-2002 at 07:39 AM.

09-05-2002, 08:47 AM	#24
Kevin Slacking more than your weird uncle Join Date: Nov 2000 Location: San Diego, CA (UCSD) / Los Angeles, CA (home) Posts: 1,605	What kind of memory do you have? I just bought an 8K5A2+ w/ 512mb Corsair PC3200 CAS 2 + an AIW 8500 128... Can't wait to get that all loaded up. -Kevin __________________ I used to throw hot coffee all over the ass of the horse there, then whip him while he was kickin' at me. Those f***in things are crazy.

09-01-2002, 04:29 PM	#2
Heavy_Equipment Cooling Savant Join Date: Mar 2002 Location: Newmarket, Ontario, Canada Posts: 282	Way to go. It's an awesome feeling the first time you fire up your H2O system.

09-02-2002, 04:08 PM	#4
Heavy_Equipment Cooling Savant Join Date: Mar 2002 Location: Newmarket, Ontario, Canada Posts: 282	When I switched to the 430 watt Enermax, from a generic 300 w, I gained around 150 MHz, so I would say yes, start there. As for the multipliers, yes I have seen where 13 gives a 12.5...it was an older board ...my A7V I think, that didn't support the newest cpu's though. I have never tried 14 or 15 before, so I can't say. I use lower multi's and higher fsb, for the memory throughput. Check the MB maker's web site for a bios update maybe.

09-02-2002, 04:13 PM	#5
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	thanks I guess I'll be upgrading my ps soon... oopse my L1's link in the previous post was wrong... I just fixed it... I updated the bois night before last and retested the system to the same results...what do you think bout the really hot caps/voltage regulators... I am thinking of getting some thermal epoxy and put some heatsinks on them... Tokamac

09-02-2002, 04:17 PM	#6
Heavy_Equipment Cooling Savant Join Date: Mar 2002 Location: Newmarket, Ontario, Canada Posts: 282	Not trying to be a smart ass, but did you do the "Load optimized defaults" thing after the flash? ...and that is almost the best looking L1 job I've ever seen.

09-02-2002, 04:25 PM	#7
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	um... oopse... no... do I "have" to do that I didn't really wanna have to go back and reset everything... but hold on I'll do it now.. Thanks Tokamac

09-02-2002, 05:33 PM	#8
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	damn, well that did not help... I almost lost the bios (the first time I tried it I used the Alt+F2 method and 3/4 of the way through I heard this big beep and the whole computer restarted... so then that flash was toasted and the only thing I could do was boot from a floppy and reflash (I was sweating bad during that little experience...) now I can only go as high as 11.5 (default of the chip) I used to be able to get 12.5 (when I set the multiplier on 13) I wonder if the conductive paint peeled or something? Anyway here are the multiplier results: 6 thru 10.5 No post 11 ok 11.5 ok (default for chip) now the wierd part... 12 = 11 13 = 11.5 14 = 5 15 = 5.5 Tokamac

09-02-2002, 08:03 PM	#9
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	OK update: 1800xp@ 1830 (11x166FSB) 2.0V CPU = 38C much better...

09-02-2002, 08:38 PM	#10
Heavy_Equipment Cooling Savant Join Date: Mar 2002 Location: Newmarket, Ontario, Canada Posts: 282	That sounds better.

09-03-2002, 02:47 AM	#12
MadDogMe Thermophile Join Date: Aug 2002 Location: Just shut up ;) ... Posts: 1,068	Mosfets!, they (correct me if I'm wrong!) controll the voltage to keep it level. Are they ALL getting hot?. on my mobo they're 5volt & 1.75(c~core) i think. Are the volts fluctuating alot when you O/C?. Would doing the 5volt mod(wires to centre leg/pin) help you think?.(i'd imagine it's the 5v's getting hot, as that's the first to get screwy when I O/C)

09-04-2002, 12:10 AM	#14
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	I see I have to run mine at 2.05V now to keep it stable... But those mosfets/voltage regulators are getting real hot... I have noticed on some of the newer mobo's out there that some of them have heatsinks on them. However no the voltages are not fluctuating much 5V is a bit low at 4.7V And of note I think if I cool some of those down I may get a lower CPU temp. since that much heat can't help but travel down the leads to the CPU? what do you think? And of course the advantage of lowering the intrinsic electronic properties of the chips. Tokamac

09-04-2002, 12:19 AM	#15
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	I noticed that an Epox 8kha+ I had would not work reliably witha vmod and high speed XP until I cooled the mosfets. I pointed a powerful fan at them to verify that solved the problem, then I put some ramsinks and a quiet case fan as a permanent solution.

09-04-2002, 12:25 AM	#16
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	I think that will be my next course of action... however there are some of those buggers on the back of the board too!!! (now where is my Dremel... Tokamac

09-04-2002, 05:58 AM	#18
jamicon Cooling Neophyte Join Date: Aug 2002 Location: Australia Posts: 44	i remember back in the days of the Abit KT7 people got better o/c by putting little sinks on them. you could also get a fan like this to mount onto them: although something with a little more hight would work (like this, only mounted so it blows directly on the MOSFETS

09-04-2002, 06:47 AM	#19
MadDogMe Thermophile Join Date: Aug 2002 Location: Just shut up ;) ... Posts: 1,068	I would'nt like to jam my case up with that stuff!, I'd put the biggest passive heatsinks on that I could fit if it was an issue. Do you think it might be cause the PSU is only 300watt?. would an 'irratic' flow of energy produce more heat?. You'd think that being aimed at OKers' that they would put a better rated Mosfet in there would'nt you?. can you swap them out for ones better rated?...

09-04-2002, 07:11 AM	#20
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	probably, however on mine the center terminal is cut and the back plate is attached to the board (maybe that is where they planned on moving the heat, through the board itself ) So this is the million dollar question: Has anyone tried to watercool the voltage regulators too? (I am guessing that they are responsible for stepping down the 5V PS voltage to the other required voltages of the mobo: 1.75 (or higher ) / 3.3V CPU, 2.5V memory, 1.5 AGP ect...

09-05-2002, 06:06 AM	#22
MadDogMe Thermophile Join Date: Aug 2002 Location: Just shut up ;) ... Posts: 1,068	Mine are cool , but thats default speed on a KX7r. not alot of help for an Epox!, it is also 3~phase as well. I don't think the Mosfets step down the power rather than keep it level, cause the 5volt mosfets have 5volt into them. the middle leg is always cut/missing. (you can solder a 5v wire direct to the middle 'stump' to help 5v rail stay @ 5v, rather than 4.82(which my KX7 is @) ). I don't know how the V~core mosfet works, they must be 'kinda' variable, seeing as it ranges from 1.60 to 2.20+ . I definatly think you need a 400watt PPPSU @ the least to seriously 'OC' (Doh!! ) nowadays, with the power draw of these T~birds, T'breads & Paliminos... HeavyGear!, are you using a dehumidifier to chill?, if notwhat?...

09-05-2002, 08:40 AM	#23
tokamac Cooling Neophyte Join Date: Aug 2002 Location: G-Town NC Posts: 51	Yea I am planning on upgrading the powersupply, however that is an expense I had not counted on (actually there were many, many unplanned on expenses/ trips to home depot throughout my watercooling project) So I am gonna have to wait a bit before I upgrade... Tokmac

09-05-2002, 09:33 AM	#25
Heavy_Equipment Cooling Savant Join Date: Mar 2002 Location: Newmarket, Ontario, Canada Posts: 282	Yup, dehumidifier. It's not the coldest chiller on the block, but I have fun with it.

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