Your board has core unlocker so if you see a PhenomIIx2,X3 or athlonIIx2,X3 (MUST BE 512KB L2 CACHE THE 1MB L2 CACHE PER CORE CPU IS THE SAME AS THE ONE YOU HAVE NOW.) locally for really cheap it's worth taking a chance.
$15 example of a athlonII X2 215 that could unlock to a X4.
https://www.amazon.com/gp/offer-listing/B002RMT6SQ/ref=dp_olp_used?ie=UTF8&condition=used
$45 PhenomII X4 B95 3.00GHz
https://www.amazon.com/AMD-Phenom-3-00GHz-Desktop-HDXB95WFK4DGM/dp/B00NVO5TOY/ref=sr_1_34?s=pc&ie=UTF8&qid=1468005520&sr=1-34&refinements=p_n_feature_keywords_four_browse-bin%3A7107930011%2Cp_n_feature_four_browse-bin%3A2383240011%7C6789588011
$98 FX6300
https://pcpartpicker.com/product/PnxfrH/amd-cpu-fd6300wmhkbox
$118 FX8320E
https://pcpartpicker.com/product/kfrcCJ/amd-cpu-fd832ewmhkbox
You could also buy your cpu cooler now. Pick out a large air cooler or really good water cooling kit.
Put a cooler intended to run a FX-8320@4.4ghz@180watts on it.
1.Drop your ht bus and memory speed manually to the second lower one.(keep the same memory timings as the faster speed)
2. Set your voltage to 1.50volts. Increase your memory voltage a bit too.
3. Increase your fsb by 10mhz until it wont post. Hit the startup button a bunch of times until the board bails and says your overclock settings have failed. Go back into the bios and set it at the last speed it booted up at.
4. Boot into windows and test with prime-95 for about 10 mins. If it fails drop the fsb by 2mhz and retest it.
5. If it passed, increase it by 2mhz until one core fails during testing. Then drop it by 4mhz and retest it.
The cpu you have now is known to overclock very well.
-Your board might not work well with the fx cpu because they draw more power than the athlonII and phenomII cpus.
Be a careful when overclocking the phenomII or fx, the board can only supply so much power.
http://www.tomshardware.com/reviews/best-cpu-coolers,4181.html
$29 Deepcool GAMMAXX 400 74.3 CFM CPU Cooler
https://pcpartpicker.com/product/hJFPxr/deepcool-cpu-cooler-gammaxx400
$89 Noctua NH-D15 82.5 CFM CPU Cooler. Very huge so make sure your case has the room.
https://pcpartpicker.com/product/4vzv6h/noctua-cpu-cooler-nhd15
$115 NZXT Kraken X61 106.1 CFM Liquid CPU Cooler
https://pcpartpicker.com/product/FFFPxr/nzxt-cpu-cooler-rlkrx6101
Power supplies 600watts and greater. Starting at $46.
https://pcpartpicker.com/products/power-supply/#sort=a9&page=1&m=52,76,11,14,101,18,28,29,95,71,63,441,39&W=600,2000
Option#2 is you sell your board+cpu+hd6450 card and buy a new cpu+board.
OFFER YOUR MEMORY FOR A EXTRA $20 SO YOU CAN GET A FASTER 8GB KIT.
reuse your memory if they do not buy it.
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