I installed the water cooling gear today. It's the Dtek White water block, Dtek radiator with shroud and bay res. Also running a 85 watt peltier on a secondary dtek tc-4 block. Pump is a Hydor L20.

When I first booted the cpu was running at 59C. Figured with WC I could rop my voltage and so dropped the cpu voltage down to 1.525 volts and the cpu temp is fairly stable at 43/44C at idle. Haven't done any load testing yet.

I was pretty sure the peltier wouldn't help me that much but was surprised that the temps aren't dropping any further.

As of right now the cpu is at 44C, socket at 36C and the mb/ambient 24C. Computer is in an airconditioned basement.

Think this pump is big enough? Bigger peltier? I guess I need to check the contact with the cpu but with the three 1/2 inch hoses going to the block it's pretty tough to take on and off. I'm afraid I'm gonna crush the die.

Thanks,

Rob

it sounds like you running the pelt as a water chiller would that be correct?

Something sounds wrong with those temps though......
tell us more about your cooling setup?

Is the pelt on the correct side? Those temps do not sound right at all, more like a good air cooled system but definitely not peltier/water cooled.

You should be mid to high 30's without the pelt.

Check:

1. as you stated, that the block is correctly mounted and has good contact with die.

2. pelt is not heating the water.

You definately have a problem somewhere!

Big question...how much water do you have in your system?

Correct it is a water chilled system. The peltier is on the correct side. I'm gonna power down the pelt just to make sure though. Regarding water level, the bayres is full. I let it run for about 48 hours to leak check and work the air out. It did take a couple of hours for the bubble and air pockets to work themselves out. I'll probably check the water block to die fit tommorow.

Thanks,

Rob

What are you using to get your temps?

Motherboard monitor as well as checking it in bios

You never answered my question...How much water is in your rig? If you are running a lot, it will take a lot to cool it off. If you are running in-line, it takes much less.

Well that's tough to answer. I didn't measure it. Just filled up the bay resevoir. I'd say altogether it holds maybe 2 quarts?

I doubt it if its just a CD-Rom bay... at most a 1 ½ but I would more or less say 1 quart... just my guess though...

Don't forget the water in the lines and the radiator. Holds more than you'd think. But hell who knows. I just want to figure out what's wrong.

What are you using to cool the pelt?
Shut the pelt off completely, then see what she does. Do you have the gear to run the system without the computer on, and still measure temps?
I use a spare PSU for the fanssss I run and a twin LianLi thermometer set with one probe in the actual flow of coolant and the other for ambient.
RC, with a set-up like this you could run diagnostics and pin point what is happening and where.
Without any heat to disapate you should be able to get ambient.
LianLI therms for 2 on a 5.25"brkt was only 15-16 bucks and the probe can fit under the hose at any joint without leaking.
...let me know, I hope that block does a better job than that!!

Thanks for the ideas Z, The pelt is being cooled by a Thermalright SLK-800 and a 80mm vantec tornado on a fanbus. It's an 85W peltier and I know for sure that I'm under powering it. I have turned it off and it seems to make no difference on or off.

I have gently put more pressure on the block to see if maybe it wasn't contacting the core all the way. Held it that way for a couple of minutes and the temp never dropped.

The flow of the system is like this:

Pump, chiller, block, rad, resevoir.

I think Putwig suggested it and it makes perfect sense.

I'm wondering with the extra segement of pipes and the extra water block if the hydor l20 doesn't have enough uumph to movet he water. Water staying in block to long?

Here is the stats on the pump:

Max Flowrate 185GPH (700l/h)

Delivery Head 50" (135cm)

Thanks,

Rob

Is it all installed? Or can you still part stuff out?

Reason I ask:

The L20 should be a great pump for the little river block. I think it should also be fine for the one extra block you are running. But just to test your theory, you could remove the secondary block form the loop and see if the temps drop.

So far, a mystery!

Rad fan is turned on?

Do you have a Rad Fan? Probably stupid question but it does not hurt to ask sometimes..

Yep it's a 120mm mounted on the back on a shroud pulling air from inside the case through it to the outside. It's connected to a fanbus but running at full blast.

Yeah it's all installed and running. I was thinking could take it out of the loop and dry things up and retry.

Maybe you could try relocating the Rad outside of the case.. Just an idea...

it is outside the case.