So I have been running a solid little budget rig for about a year now. I have a 760k @ 4.5ghz (1.518V) with 2400mhz TridentX on a Asus A88X Pro. I am looking to up it to 4.6ghz but have already hit a voltage wall. The max recommended voltage for my chip is 1.55V. I can boot into windows with 1.55V @ 4.6ghz but it isn't stable and my MB is reporting 99.4 watts under load. So my question is how much above the rated TDP can I go, or is 100 watt my limit? Will I cause damage to the motherboard, CPU, or both if I give my CPU what it needs to be stable @ 4.6ghz while going over 100 watts? 

bcavnaugh
Based on http://www.cpubenchmark.net/cpu.php?cpu=AMD+Athlon+X4+760K+Quad+Core I would think about getting a newer CPU.
Not so easy to info on that CPU...Still Looking
I would say take a look at this CPU AMD FD8350FRHKBOX FX-8350  FX-Series 8-Core Black Edition Processor but your Motherboard only supports "AMD Socket FM2+ Athlon™/A- Series Processors Supports CPU up to 4  cores" http://www.asus.com/us/Motherboards/A88XPRO/specifications/
I looked at your  but it seems to be a different computer. +1 BTW

I know it isn't a powerhouse of a PC, but that was my intention. I just wanted to build a cheap budget rig to tinker with to find out how far I could push it (without killing it lolz). Thanks for the +1. I know there isn't a lot of info on that CPU around, but I more or less am looking to find out about TDP and how far above the rating I can go before she has a meltdown.  I don't know if it has to do with cooling (heat rated in watts) or actual voltage?

Honestly, I wouldn't be pushing 1.55v through it to begin with unless you have some monster cooling.  You will degrade the chip much faster with that kind of voltage.  the difference between 4.6 and 4.5 isn't even going to be noticeable.