Best OC software utilities

Hi all,

I thought I'd run an unofficial poll of sorts. There are many software utilities that can be used for system monitoring and overclocking. Being new to the business, I'm not sure where to start. I've played a bit with NVidia's performance tools, I've looked at ATiTool, Rivatuner, and maybe one or two others. But I'd prefer to find one that works well and stick with it.

What, in your opinion, is the best OC software you've ever used, in terms of ease-of-use, features and functionality? Please list CPU and GPU software separately where applicable.

Thanks!
 
CPU:
CoreTemp to monitor temperatures
CPU-Z to monitor CPU freqs and so forth
Prime95 for stability testing.

GPU:
I do not OC GPU's. I rely on CPU-Z to monitor GPU temps.

I am starting to tinker with OCCT.
 
CPU:
Overclock in BIOS
Coretemp or Realtemp for Temp monitoring
Prime95 for stability testing
CPUz for information

RAM:
Overclock in BIOS
Memtest for stability testing
CPUz for information

GPU:
Rivatuner for basic overclocking
RBE for permanent ATI overclocking (through the cards BIOS)
ATI Tool, Crysis, 3dMark, etc. for stability testing
GPUz for temps and information
 
CPU:
CPU-Z
Orthos
CoreTemp & RealTemp

GPU:
RivaTuner
GPU-Z
rthdribl for stressing it
I've toyed around AtiTools, but didn't like it much

RAM:
Memtest
BIOS

I used to use NVTemplogger for GPU temps, but now I trust GPU-Z more
 
All free utilities:

CPU:
Overclock in BIOS
SetFSB software overclocking for Notebooks if BIOS won't overclock
Hard Mod overclocking for Notebooks if SetFSB doesn't have the registered PLL
CPU-Z for information
Prime 95 for Stability Testing
RealTemp (for Intel CPU's)
CoreTemp (for AMD CPU's)
SpeedFan (for unlocked AMD CPU's)

GPU:
GPU-Z for information
FurMark for Stability and Benchmark testing
RivaTuner (latest graphics drivers won't work with it)
EVGA Precision (which will also work for MSI, but need to reboot for settings to take effect)
 
CPU & Memory:
OC in Bios
CPUz for info
CoreTemp for temps
Prime95 for stability
Memtest for ram stability

GPU:
CCC (I'm not aggressive enough to fool with the voltage)
HAWX menu screen for stability (I swear by it, as Furmark is too abusive to ATI cards for my tastes)
GPUz for monitoring temps