Help me with understanding the GPU-Z sensors

[Blazing fire]

Hi guys! I'm having some trouble understanding some of the terms used in the GPU-Z window. It's the one under the "sensors" tab. Could someone explain the following terms please?


GPU Temp (BISPIO)
GPU Temp. (MEMIO) I presume it's memory? But what's IO?
VDDC Slave #1,2,3. What is that and where is it located?Thanks a lot!

:beer:

[Alien432]

This link below is to the RV770 (ATI 4870/4850) Architecture overview. This GPU has 3 temperature sensors which are:

DISPIO
MEMIO
SHADERCORE

Although we cannot know for sure where the sensors are as ATI says that's proprietary information they do imply they are in the GPU but many think they maybe elsewhere because of the variation in temps.

http://www.rage3d.com/reviews/video/atirv770/architecture/

I think these 3 temp sensors are just on 4870.

It has 3 VRM(Voltage Regulator Modules) VDD temperature sensors
VDD#1
VDD#2
VDD#3

http://www.rage3d.com/reviews/video/atirv770/architecture/pics/architectures/rv770-diagram.jpg

If you look at the above rv770 diagram closely, you will find shader cores(SHADERCORE) in the middleof GPU, the display controller upper right(DISPIO) and the memory controllers at the bottom(MEMIO).