Best GPU and CPU temperature monitoring software? Also stress testers?

[salted_cashews]

I've been using Core Temp for a while, and I used to use MSI Afterburner, but I was wondering if there are any programs out there that can display the temps in-game, and or are both a CPU and GPU monitor. Of course if it also displayed temps in-game that'd be the best.

Basically, which software is the most accurate and the most trusted? I can live without stuff like CPU and GPU monitoring, I have no problem having 2 different programs, and I can even live without it displaying the temps in-game. I just want it to be accurate and trusted.

Edit:

I forgot, I'm also looking for some trusted GPU, PSU, CPU, and RAM stress testing software. I think my GPU might be causing reboots, but I want to be sure.

[jambutty]

I like using HWinfo, HWMonitor, SPeccy and Speedfan

[H O U 5 T O N x]

I use HWmonitor as well

[Noire Black Heart]

HWmonitor's best. :)

[jambutty]

I wouldn't say it is best it can sometimes give weird readings for instance TMPIN2 is supposed to be the northbridge reading on my MOBO but it can jump around and the reading can get pretty high but to touch its no hotter than a warm breeze.
But as a general idea using two so you can compare what the readings are is the way to go especially if your stress testing.

[Supreme Toaster]

MSI Afterburner can show temps within the game and speccy is quite good aswell. (AMD Overdrive shows temps per core)