Hello all,
So I've attempted to do a thorough search of my problem here and see if it could be answered, but unfortunately I am still unable to solve it.
The Problem: My AMD Phenom II X4 945 Quad-Core, 3MHz, 125W (
HDX945FBGIBOX) from Newegg's
"AMD Dragon Platform" Bundle is running at ~802.70MHz with a x4.0 multiplier.
My Troubleshooting: I have updated all of my drivers, re-seated all of my plugs and hardware [RAM, GPU, etc.], Set the Windows Power Management to High Performance, disabled Cool 'n Quiet and CE1 Power Management, reset the CMOS, disabled CnQ and CE1 again, run
Video Card Stability Test, played
Age of Empires III [performed fine, good FPS], played
Arma II [performed terribly, very low FPS <10], just attempted to use Prime95 but couldn't really figure out what I was looking at. Ran a Blend Test and it made my first core go to 100% Load while the temperature maxed at 40°C. Monitored with Core Temp and CPU-Z and nothing has brought my ~802.70MHz, x4.0 multiplier, and 1.106V up or down. Somethings is keeping it locked there.
I did manage to use ASUS' supplied TurboV overclocking utility [I don't overclock anything myself otherwise] and was able to raise the Core Speed to just over 1000MHz before the PC shut itself down. I promptly uninstalled TurboV but took the fact that the processor sped up to mean that it isn't a CPU problem, but something else holding the CPU down. My Core Temp readings are static between Min. 33°C and Max. 34°C.
My power supply is rated at 750W, while my new video card [500W] and AMD Phenom II X4 945 [125W] are rated at about 625W, so I'm wondering if my power is too low and keeping things from running optimally. If it isn't that, my BIOS is 3 years old and I'm wondering if it needs to be updated to a certain degree to ensure proper functionality. Using
ASUS' Motherboard CPU Support List I found another AMD Phenom II X4 945 125W (HDX945FBK4DGI) on the list, about 60% of the way down it, but not my specific number (
HDX945FBGIBOX). Is this simply a case of incompatibility, even though another Phenom II with the same wattage and required BIOS version
does work? I've noticed a trend on these forums that usually people with this 800MHz CPU problem have a board that doesn't support it. Though in my case [of course, it's unique

] mine was bundled with the motherboard by Newegg and I would assume it's compatible.
I am ready for any and all suggestions and I've come to the point where I'm about to just
buy a 1200W power supply, and consider a new CPU/MB in the coming month.

Three calls to ASUS and one call to AMD have garnered no results. I also think I should mention that ever since I bought this bundle[plus two newer video cards and the 750W PSU over the subsequent 3 years]
my Windows Experience Index has always left my processor lagging behind the other components. My CPU is rated 3.7 on the Index, but the others are all between 5.9 and 7.9. I've attached 5 files already so
here's a link to the latest screenshot of it as well.
Build Specs:
CPU: AMD Phenom II X4 945 Quad-Core, 3MHz, 125W
GPU: Gigabyte Radeon HD 7870 2 GB, 256-bit, GDDR5, 500W
GPU Driver: 8.961.0.0 -- April 5, 2012 (AMD Catalyst 12.4)
MB: ASUS M4A78-E (BIOS 0711 -- March 27,2009)
PSU: Rosewill Xtreme RX750-D-B 750W, ATX12V v2.2 & EPS12V v2.91
RAM: 6GB = (2) 2GB DDR2, (2) 1GB DDR2
OS: Windows 7, 64-Bit, SP 1
Benchmarking: CPU-Z, Core Temp
DirectX: DX11