What part is heating up in my PC?

[Raiddinn]

I am having a tough time figuring out which part of my computer is heating up.

I think it may be my video card, but I am not sure;

When I go in the BIOS it shows a motherboard and CPU temp that both tend to stay below 50c

When I boot into Ubuntu Linux and load up Wesnoth and a temperature reading program which spits out the following readings

Temp1
min 59
max 66
current 61

CPU/Fan
min 1997 rpm
max 2596 rpm
current 2045 rpm

CPU Temp
min 38
max 46
current 39

MB Temp
min 41
max 46
current 42

Temp1
min 23
max 39
current 25

If I stop the program and start it again, the order of those things will change, but the values are pretty consistent.

I am wondering how I can find out what the first Temp1 is, the one that went as high as 66c.

Documentation has provided me little help so far in figuring out what that is.

My motherboard is a cheapy Asus M4N68T-M v2 since I could get it for free and the price was right on it.

Anyway, I don't want to know that my motherboard sucks because I already know that, I just want to know what thing is making the high temps on it.

If anyone knows what I can do to determine what that is, feel free to chime in.

I am thinking it might be my video card, but I am not sure.

My system specs are

XFX Core 650w PSU
AMD Phenom 2 x 4 840 CPU
ASUS M4N68T-M V2 Motherboard
ATI Sapphire Radeon HD 4870 Video Card
2x HDDs one Seagate the other Western Digital, 120 GB boot drive and 500gb data drive
2x 2GB Corsair Ballistix RAM sticks

Nothing else really that matters.

 

[slcmike]

Try using this:
http://www.cpuid.com/softwares/hwmonitor.html

 

[Raiddinn]

It is apparently my video card.

Thanks for the link that helped me figure it out.