Thermal Probe Measuring Die Temp. Directly

superart · 12-10-2003, 09:18 PM

I've had this idea rolling arround in my head for some time.

What if we drilled or milled a small channel into a water block from the outside edge going into the center, right over the die. Then placed a thermal sensor into that channel, so that it is practicly touching the die. Then we can "spackle" it in with thermal epoxy. Then Lap it smooth.

Something along these lines:

bigben2k · 12-10-2003, 10:36 PM

Oh, so just like Intel specs?

(btw, they forego the thermal epoxy.)

It'd be good if you have a use for such a modified block, but it otherwise becomes "altered", and isn't going to behave like the original.

Also, you can't do that to all the blocks: the "Cascade" for example, can just barely handle a lapping!

superart · 12-10-2003, 10:47 PM

Quote:

Originally posted by bigben2k
Oh, so just like Intel specs?
(btw, they forego the thermal epoxy.)

Intel heatsincs have thermal probes in them?

Quote:

Originally posted by bigben2k
It'd be good if you have a use for such a modified block, but it otherwise becomes "altered", and isn't going to behave like the original.

The use would be to find out how hot the die is.

Quote:

Originally posted by bigben2k
Also, you can't do that to all the blocks: the "Cascade" for example, can just barely handle a lapping!

Wow, thats cool, I didn't know that.

Well then we would only do it to blocks that can handle it.

bigben2k · 12-10-2003, 10:59 PM

Ok, but what do you have in mind? What are you trying to achieve?

(No, Intel HS don't have those, but the specifications call for making that exact same groove).

superart · 12-10-2003, 11:14 PM

I just thought that this would give you a more acurate picture of the die temp.

Either instead of, or in addition to, the in-die thermal sensor.

jaydee · 12-10-2003, 11:26 PM

Been there, done that.

Don't do it! The block will be useless for any other processor you buy in the future. Especially ones with IHS's. Better off attaching the probe under the CPU via the socket mod.

bigben2k · 12-10-2003, 11:43 PM

Quote:

Originally posted by superart
I just thought that this would give you a more acurate picture of the die temp.

Either instead of, or in addition to, the in-die thermal sensor.

So this is for you personally, to measure your own temp?

superart · 12-10-2003, 11:43 PM

am I understanding you right?

24.3C is what you got with the socket mod, and 33.1C is what you got with the HSmod?

That's a BIG difference, although, I'm probably not understanding you right.

superart · 12-10-2003, 11:48 PM

Quote:

Originally posted by bigben2k
So this is for you personally, to measure your own temp?

Yea.

jaydee · 12-11-2003, 12:28 AM

Quote:

Originally posted by superart
am I understanding you right?

24.3C is what you got with the socket mod, and 33.1C is what you got with the HSmod?

That's a BIG difference, although, I'm probably not understanding you right.

No, the digital probe used was a indoor/outdoor probe. Switch it to in and it takes a reading from the unit itself, switch it to out and it takes the reading from the probe on the end of the wire.

24.3C is the air temp, 33.1C is the temp on the die with the channel milled in the water block, and the first picture is MBM taking the onboard probes temp which is 32C.

superart · 12-11-2003, 12:35 AM

Oh, OK. That clears it up.

How did the temp from underside compare?

jaydee · 12-11-2003, 12:42 AM

Quote:

Originally posted by superart
Oh, OK. That clears it up.

How did the temp from underside compare?

I did that 3 years ago. Didn't even know about the under cpu mod then.

superart · 12-11-2003, 12:44 AM

OK.

Fair enough.

Cathar · 12-11-2003, 09:00 PM

Is it just me who thinks that a thermal probe surrounded on 4 sides by a waterblock's cool metal isn't going to be that representative of the CPU die temperature? :shrug:

superart · 12-11-2003, 09:35 PM

its actually 5 sides, and yea, your right.

pHaestus · 12-11-2003, 09:35 PM

Don't look at me; I solder on CPU diode pins as a regular part of my routine.

Cathar · 12-11-2003, 10:18 PM

Quote:

Originally posted by superart
its actually 5 sides, and yea, your right.

One side is the CPU, one side is where the wires go, and the other 4 sides the block.

Just call me a pedant...

jaydee · 12-11-2003, 10:19 PM

Quote:

Originally posted by Cathar
Is it just me who thinks that a thermal probe surrounded on 4 sides by a waterblock's cool metal isn't going to be that representative of the CPU die temperature? :shrug:

Even 3 years ago I had a little common sense. I siliconed the water block channel before putting the probe in in an attempt to isolate the probe from the cooling of the water block. Like I said "little" common sense.

12-10-2003, 10:36 PM	#2
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Oh, so just like Intel specs? (btw, they forego the thermal epoxy.) It'd be good if you have a use for such a modified block, but it otherwise becomes "altered", and isn't going to behave like the original. Also, you can't do that to all the blocks: the "Cascade" for example, can just barely handle a lapping! __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

12-10-2003, 10:59 PM	#4
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Ok, but what do you have in mind? What are you trying to achieve? (No, Intel HS don't have those, but the specifications call for making that exact same groove). __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

12-10-2003, 11:14 PM	#5
superart Cooling Savant Join Date: Mar 2002 Location: FL Posts: 787	I just thought that this would give you a more acurate picture of the die temp. Either instead of, or in addition to, the in-die thermal sensor. __________________ When you do things right, people won't be sure youv'e done anything at all. Looking to buy/trade for used Deep Fryer and Vacume Pack Sealer.

12-10-2003, 11:43 PM	#8
superart Cooling Savant Join Date: Mar 2002 Location: FL Posts: 787	am I understanding you right? 24.3C is what you got with the socket mod, and 33.1C is what you got with the HSmod? That's a BIG difference, although, I'm probably not understanding you right. __________________ When you do things right, people won't be sure youv'e done anything at all. Looking to buy/trade for used Deep Fryer and Vacume Pack Sealer.

12-11-2003, 12:35 AM	#11
superart Cooling Savant Join Date: Mar 2002 Location: FL Posts: 787	Oh, OK. That clears it up. How did the temp from underside compare? __________________ When you do things right, people won't be sure youv'e done anything at all. Looking to buy/trade for used Deep Fryer and Vacume Pack Sealer.

12-10-2003, 11:26 PM	#6
jaydee Put up or Shut Up Join Date: Dec 2001 Location: Spokane WA Posts: 6,506	Been there, done that. Don't do it! The block will be useless for any other processor you buy in the future. Especially ones with IHS's. Better off attaching the probe under the CPU via the socket mod.

12-11-2003, 12:44 AM	#13
superart Cooling Savant Join Date: Mar 2002 Location: FL Posts: 787	OK. Fair enough. __________________ When you do things right, people won't be sure youv'e done anything at all. Looking to buy/trade for used Deep Fryer and Vacume Pack Sealer.

12-11-2003, 09:00 PM	#14
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	Is it just me who thinks that a thermal probe surrounded on 4 sides by a waterblock's cool metal isn't going to be that representative of the CPU die temperature? :shrug:

12-11-2003, 09:35 PM	#15
superart Cooling Savant Join Date: Mar 2002 Location: FL Posts: 787	its actually 5 sides, and yea, your right. __________________ When you do things right, people won't be sure youv'e done anything at all. Looking to buy/trade for used Deep Fryer and Vacume Pack Sealer.

12-11-2003, 09:35 PM	#16
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	Don't look at me; I solder on CPU diode pins as a regular part of my routine. __________________ Getting paid like a biker with the best crank... -MF DOOM

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