Where is the thermal diode on a card usually placed?

I was wondering where the thermal diode/sensor on modern graphics cards is placed. Is it like the cpu sensor on older (?) AMD cpus where it would be below the socket (even tho there isnt a socket, so under the chip) or is it actually on die. The reason I am asking is coz my powercolor x1950 pro supposedly doesnt have temp monitoring (or fan monitoring/control for that matter) capabilities. If it was on die, then I would assume that the video BIOS is just not coded to read from the sensor, so if someone was able to mod the BIOS into reading it, then I would actually be able to monitor temps. I myself have no idea how to mod a BIOS beyond clock speeds tho.

Also, what about the fan speed control? The sapphire x1950 pro uses the same cooler (the non-ultimate version), does it have fan control, or does it run at constant speed? If it does adjust fan speed, then I guess its just powercolors BIOS again.

Any help appreciated.

You got the one with the accelero X2? I have the standard 1-slot cooler, and every program available tells me I dont have any available. Plus my card runs at a constant speed (you can tell as the sound, a jet engine, never changes).

EDIT: What do you use to monitor it?

Any ideas how to access the thermal sensor? I'm pretty sure the fan cant be controlled (I'll live with that, it is a cheap brand) but I still wish I could monitor temps.

Ok, thanks anyway.

Well, the last one I connected which was a 9800 Pro haha. Did you try ati tool and it still didn't work? What card is it?

Edit: Oh I see you have a 1950Pro, I have an x800gto in my computer at the moment and I can read it's temperatures from ati tool. Did you go to settings - temperature monitoring and enable it?

I mainly use it to monitor temperatures and overclock a bit. I suggest you install the latest NON-beta one, because...well, you never know.

Are you sure? When you click on settings there is no Temperature Monitoring in the drop down? I have version 0.24 btw.

And if that doesn't work try the 0.24 just in case. It's weird though...maybe it's your motherboard? What is your motherboard btw?

0.24 doesnt even detect clocks properly lol! Nothing there either...

All stock and connecting with the card (I assume as the fan runs and I never connected it to the mobo)

I am about 80% sure its the video BIOS. After using the latest RaBiT version and reading from the EEPROM, the Environment monitor was greyed out. After finding a Powercolor BIOS file on the net and opening that, the Environment monitor is accessible. Just dunno if I want to flash the card, since it will void the warranty. Not quite the same as an OC. Plus I dont have a PCI card lying around if it screws up.