4890 Going To Thermalright VGA Cooling & MX-3 - Page 3 - Overclock.net

BradleyW · 09-01-09

Quote:

Originally Posted by Tator Tot

I use the dot/pea method. But it really doesn't seem to matter much with MX-2, I've spread it in the past, and used dot, every time it comes out more or less the same.

Dot for GPU unless specified by the manufactor of the perticular thermal compound you are setting.

Line for CPU unless specified by the manufactor of the perticular thermal compound you are setting.

WannabeArchimedes · 09-01-09

Quote:

Originally Posted by Mariusz803

Hey there,

Quick question, based on the screen shot where your using TechPowerUp GPU Monitor, does it indicate your VRM temps? (i'm not familiar with the program)

If not what does?

Cheers.

Yeah, GPU-Z is great for measuring temps - the 5 temps labeled "VDDC Slave" and "??? Slave" are the VRMs. Rivatuner with the 4890 voltage plugin can also show the temps. However, any card with nonreference VRMs (cards like Sapphire Vapor-X/Toxic/Atomic and several XFX cards) will not work, it only works with reference designs.

Mariusz803 · 09-01-09

Quote:

Originally Posted by WannabeArchimedes

Yeah, GPU-Z is great for measuring temps - the 5 temps labeled "VDDC Slave" and "??? Slave" are the VRMs. Rivatuner with the 4890 voltage plugin can also show the temps. However, any card with nonreference VRMs (cards like Sapphire Vapor-X/Toxic/Atomic and several XFX cards) will not work, it only works with reference designs.

This site is fantastic, thanks for the post.

+rep

LoneWolf3574 · 09-05-09

Well I examined the base of the T-Rad2 GTX and I should have guess that it would show the standard Thermalright quality we all know and love from the TRUE. How anyone can mill something and have 3 valleys and 2 peaks and call it good is beyond me. It quite literally had a couple of waves in the material that took me a good 30 minutes of lapping with 180grit to even get close to being smooth, when I started I think I could have fit an aluminum fin from a heatsink through with some room to spare, very disappointing. Four hours of lapping all the way to 10 micron and there's still light coming through on the razor blade test, I'd guess about a little less than the width of a hair. Testing results will be posted as soon as I have completed them.

Mariusz803 · 09-05-09

Quote:

Originally Posted by WannabeArchimedes

Yeah, GPU-Z is great for measuring temps - the 5 temps labeled "VDDC Slave" and "??? Slave" are the VRMs. Rivatuner with the 4890 voltage plugin can also show the temps. However, any card with nonreference VRMs (cards like Sapphire Vapor-X/Toxic/Atomic and several XFX cards) will not work, it only works with reference designs.

After reading your post i was expecting to see my vrm temps since i have a standard ATI HD 4890. But the temps are still not displayed.
I'm running TechPowerUp GPU-Z 0.3.4

Any ideas why?

... i must be missing something obvious

screen cap here:

LoneWolf3574 · 09-05-09

Well the lapped results are in and even though I thought I could do a better job, lapping bought me nearly 3C under load, not bad. Now remember, ambient temperature is still a balmy 26C.

T-Rad2 GTX (lapped) & VRM-R2 with MX-3 IDLE/LOAD:

GPU (DispIO) - 48C/70C
GPU VRM - 42C/69C
GPU (MemIO) - 53C/82C
GPU (Shader) - 48C/78C

The GPU did peak at 73C but then cooled back down to an average of 69-70C.

EDIT: BTW, the T-Rad2 GTX is a pain to lap. Given how the radiator is positioned over the base, the weight is not evenly distributed and may result in an uneven lap job. Mine was crap to start with, during lapping I found that I had 2 valleys to the east and west of the center of the heatsink base.

LoneWolf3574 · 09-05-09

Quote:

Originally Posted by Mariusz803

After reading your post i was expecting to see my vrm temps since i have a standard ATI HD 4890. But the temps are still not displayed.
I'm running TechPowerUp GPU-Z 0.3.4

Any ideas why?

... i must be missing something obvious

I realize that you said that you're running a standard ATi HD 4890, but could you expand on that? What color is the PCB? What brand and model? All reference PCB for ATi are red, anything else is non-reference even if it has the reference cooler on it.

Mariusz803 · 09-06-09

Quote:

Originally Posted by LoneWolf3574

I realize that you said that you're running a standard ATi HD 4890, but could you expand on that? What color is the PCB? What brand and model? All reference PCB for ATi are red, anything else is non-reference even if it has the reference cooler on it.

I'll post pics later today after work. Thanks for the help.

* EDIT

Here are the pics of the box.

I noticed that this is an XFX card... i may have answered my own question. Can you confirm?

If so, is there no way around to measure VRM temps?

LoneWolf3574 · 09-07-09

When you examine the graphics card itself, is the printed circuit board itself red? If so, you have a reference card. If not, then you have a non-reference card. I'm afraid that from the box alone I can't tell you anything other than what I can make out on the box. You have a XFX 4890 Extreme Edition with 1Gb of DDR5 beyond that I can't see what is printed on the white labels.

Mariusz803 · 09-11-09

Quote:

Originally Posted by LoneWolf3574

When you examine the graphics card itself, is the printed circuit board itself red? If so, you have a reference card. If not, then you have a non-reference card. I'm afraid that from the box alone I can't tell you anything other than what I can make out on the box. You have a XFX 4890 Extreme Edition with 1Gb of DDR5 beyond that I can't see what is printed on the white labels.

Ok, this is it here.

I guess that answers that... hum i wanna OC my card to 1gHz, i'd love to monitor my VRm temps before and after i get my Thermalright VRM-R2 Heatpipe VGA Cooler here.

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4890 Going To Thermalright VGA Cooling & MX-3

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