lock up your motherboards!

[dicki]

well my home built water block will soon be ready, i'm just waiting for the glue to set then i can start soak testing it (no pun intended)

my poor long suffering kt7 is shaking in it's boots it can see the preperations i'm making and it doesn't look good, my friends just got a digital camera so i'll take some piccies tomorrow before i plug it all in and you can all have a good chuckle, anyway the basic aim of this post is to let you all know the reason why i may not be posting for the next few days, it'll be because somethings gone wrong

wish me luck

dicki

[GITster]

good luck mate (and about time too :D)

[Mad Bad John]

Hey Dicki, are you doing on die cooling ? its a bit risky oo er missis;)

[Fat Dave]

Let's hope this bad boy lasts a bit longer than the previous effort mate :D

[dicki]

ahh thats old hat mate, done it allready :)

this time round i machined my own waterblock out of a hunk of copper, it is BIG about 3 * 3* 1 inches weighs about a kilogram and has a nice maze cut into it. i'm currently considering how to mount it (nothing better to do while i'm at work after all) and i should be attaching it tonight photos will follow as soon as i find a digital camera and some webspace

dicki

[Lolboy]

I can drop in on the way home from work if you like with one.

Lolboy.

[dicki]

thats ok mate, the soak test worked perfectly, it soaked everything :D

will be testing again tomorrow, stay tuned

[Fat Dave]

good to see the aura of decay that surrounds you and your siblings is still nicely in tact :devil:

[dicki]

i don't know what your talking about :P

[dicki]

well it's not as impressive as i had hoped,

running 850@1g 1.85v it's stomping along at 53c fulload

remove the load and it drops immeadiatly to 43c then continues dropping to 32c so i am thinking 2 things

1: it's not sitting flat, very likly it is a very bodged together mounting mechanism

2: the base is too thick, the water comes out cold and the base is very very thick so i am thinking it's holding the heat rather than transmitting it correctly...

any thoughts would be appreiciated

dicki

[Fat Dave]

how is it mounted to the mobo then? did you go with the four holes through the board or some sort of crazy clip arrangement?

FD

[GITster]

Originally posted by dicki
any thoughts would be appreiciated

dicki

You're a poo water block designer :xnod:

[jozzer]

Well.....decent thermal paste and firm mounting......what you are describing are the symptoms of bad seating.......and poor contact.
Are you useing vaseline as paste?????
I too have a very heavy baseplate.....it holds a little warmer than a slimmer one, but gives much slower temp rise/fall.....for stability its good.
Only other thing is if the punmp is well small....at least 800lph is needed....(bearing in mind your not going to clock past 1500 just now)

[nitan]

You're a poo water block designer

thats harsh...u shud see these things...they are really cool...the only thing that i thot may be 'wrong' with em is that the bases are too thick...thats all...

nitan:)

[GITster]

seen them? i saw him make them!

[nitan]

lol...oh ok...i dint know that...all i did was take em off him...keep em for a month and then sandblast em...lol...

nitan:)

[dicki]

heh heh, that was great :) bits of copper flying everywhere, the tool bit smoking from the heat of my frenzied machining :D

for anyone that doesn't know i made these blocks in between exams in my last year of uni :) so i didn't have masses of time to do it.

well lets see..... it is very very likly that the blocks arn't mounted properly. but i can't figure out how to mount it any better... i'll experiment

whats wrong with vasaline? i used that when air cooling and only hit 44c with my fans running at 5 volts

the pump may or may not be the problem, i'm using in an eheim 1250 so being to slow isn't a problem... i have had it suggested to me (thanks kms) that it may be running too fast, so i need to consider limiting the flow rate

dicki

[jozzer]

Dicki....there can be a 10 degree difference between artic silver and maplins cheap paste I SEEN IT WITH MY OWN EYES.......prolly 15 degrees between vaseline and artic silver.GET SOME PASTE.......
You been around here for a while dicki.........you read the posts......how many times have you heard "wow...arctic silver is great"
GET some PASTE.....
The pump sounds good.......I reckon its not the pump (although running slower may help depending on the inside of the waterblock)
I reckon what ya need to do is GET SOME DAMN PASTE :rolleyes:
Your waterblocks prolly better than mine (assuming youve given generous passage to the water....).....
Does the waterblock itself get warm to the touch?if it does, then the water is not cooling the metal......if it doesn't the waterblock isnt cooling the chip...and you need to GET SOME PASTE......

[dicki]

heh heh now don't get me wrong, i am the first one to recommend artic silver it's just i've run out and i know that vasaline works better than standered maplin style thermal paste by a good 3 or 4 degrees (i made a study on it in the last board) anyway that doesn't matter...

talking to jozzer last night and examining the setup i have come to the conclusion it's just not sitting right, i'm considering alternate mountings now and will attack it at the weekend. as a plus note it has been running now solidly for about 3 days with no signs of leakage

flow rate may be an issue but i can't look into it until i have it sitting right

jozzer: the inside of the block is a maze, water goes in over the core zig zags around the block and exits top right. nice wide channels all the way through so as not to restrict flow to badly, the base is between 7mm and 10mm can't remember what exactly

dicki

[dicki]

excellent :D

well 1.1ghz, 1.8v and a stable 40c full load and i'm much happier, this chip will go far higher it's not even sweating yet.

the mounting was the trouble

as dr julius hibbert would say "i prescribe vasaline! and looooooooooooooooooottttttttttssss of it" :D anyway it's working sweat now so i'll do some more clocking and get back to ya

dicki