I found this interesting although not surprising given my experience with a Piledriver.
http://forums.anandtech.com/showpost.php?p=34588633&postcount=24
So AMD are shipping FX8350's with an actual TDP of up to (and possibly above) 140W and thus board manufacturers (on the cheaper boards at least) are having to implement throttling mechanisms to prevent crashes even at stock, this is because their VRM's are only rated at the official 125W spec as defined by AMD themselves.
Aside from being false advertising this is quite underhand by AMD.
http://forums.anandtech.com/showpost.php?p=34588633&postcount=24
MSI said:According to RD engineers from our HQ,
1. AMD has claimed that the FX-8350 to be 125W. However, during our internal testing, when the usage of CPU reaches 100% through Prime 95 for a while, the power consumption can exceed 125W and reaches 140W. With such condition on the 970A-G46, the high amount of power draw also causes the MOSFET to exceed its spec and will overheat.
Thus, to prevent such any potential hazard to the MOSFET, 970A-G46’s BIOS will trick the processor that its temperature is 225 degrees which will then allow the CPU to throttle. This is aimed to make the system stable in this condition.
2. We had tested using 3DMark and it did not cause throttling. Throttling only happens when the loading on a 125W CPU usage is heavy by the use of heavy burn-in tools such as Prime 95/OCCT, and such testing methods are not standard usage scenario or practical.
Please also keep in mind that this throttling behavior keeps system stable under such heavy-loading condition.
This is more of AMD’s issue on the FX-8350 because the TDP was rated lower than its actual value.
So AMD are shipping FX8350's with an actual TDP of up to (and possibly above) 140W and thus board manufacturers (on the cheaper boards at least) are having to implement throttling mechanisms to prevent crashes even at stock, this is because their VRM's are only rated at the official 125W spec as defined by AMD themselves.
Aside from being false advertising this is quite underhand by AMD.