Replaced Phenom with an FX, 75% less performance

Starcruiser

Honorable
To start off, here's my specs:
MB: MSI Gaming 970
CPU: AMD Phenom II x4 965 BE (OLD), FX 8300 (NEW)
GPU: MSI AMD R9 380 4 GB
RAM: G-Skill Ripjaws X 16 (2x8) GB
Boot Drive: Mushkin SSD 256 GB
Data Drive: Seagate 1 TB

From what I've seen there shouldn't be any issues (theoretically) when upgrading only the CPU. I was hoping for a decent performance boost with this upgrade.
The first thing I did was stick the stock fan in the closet as a backup. I'm using my nicer fan, and idling below room temperature. (!)
At first the computer wouldn't POST. No problem, I reset the CMOS with the jumper. I was able to boot to BIOS after this, but I immediately noticed how much more sluggish the menus were. I enabled a couple of settings, like XMP for my RAM and boot settings, but otherwise left everything at stock.
Once I booted my OS, it immediately rebooted my computer. I figure it was enabling the proper driver for the CPU. After the reboot, I booted to the desktop perfectly fine. All 8 cores showed in Device Manager and System Information. I enabled my boot time tracker, and rebooted. This reboot took 14 seconds, as opposed to my previous 9. Hmm.
I proceeded to benchmark the CPU with AMD overdrive, and I compared it to my previous results. They were lower. 75% lower. Huh? That's weird.
I thought maybe it was power save settings or something, since it idles at 1.65 GHz and 0.87 vcore. I disabled all the power save settings in BIOS, and overclocked for good measure to 4.2 GHz. This time when I ran the benchmark, I got even LOWER results!

I guess the next step is to reinstall the OS, but even the BIOS is sluggish. What's going on here?
 
Solution
Well it took a couple hours but it seems to be OK now. After I pulled the CMOS battery and let it sit for a minute, the BIOS loaded up much faster and was more responsive. It froze in BIOS, so I reset again, and fixed my settings. I booted to Windows (after it did another auto reboot) and tested the stock settings again.
Results at stock: http://www.userbenchmark.com/UserRun/1219420

I then spent a good bit of time getting a stable overclock, since the MSI auto overclock is garbage. I settled on 4 GHz and +0.16 vcore, tested prime95 for 30 minutes stable.
Results at 4.0 GHz: http://www.userbenchmark.com/UserRun/1219812

XaveT

Distinguished
Jul 15, 2013
205
6
18,765
I hear you. It took me a while to get used to it as well. You may have to do that Windows reinstall you were dreading. That seems to usually fix the "random" errors folks get.

Good luck!
 

Starcruiser

Honorable
Well it took a couple hours but it seems to be OK now. After I pulled the CMOS battery and let it sit for a minute, the BIOS loaded up much faster and was more responsive. It froze in BIOS, so I reset again, and fixed my settings. I booted to Windows (after it did another auto reboot) and tested the stock settings again.
Results at stock: http://www.userbenchmark.com/UserRun/1219420

I then spent a good bit of time getting a stable overclock, since the MSI auto overclock is garbage. I settled on 4 GHz and +0.16 vcore, tested prime95 for 30 minutes stable.
Results at 4.0 GHz: http://www.userbenchmark.com/UserRun/1219812
 
Solution