my amd phenom II is not working properly, it is not the frequency that is reporting the box, sometimes it is 400 mhz, when I play it is 3.2 or 3.3 instead of 3.4 ghz, and he also is very slow.
which can be?
have warranty? it was bought last year had never changed the frequency for overclocking

Please list your systems specs (motherboard, power supply, etc)


Now there could a few reasons why your cpu is throttling down but my first guess would be Cool & Quiet. try disabling it in the BIOS and see if that helps.

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PII 1100T (Extinct)
Asus M4A78T-E (should be Extinct)
4Gb of Corsair XMS3 1600Mhz DDR3 (Going strong)
2x1GB 5850's (On their last lags)
Corsair HX850W (Awsome)
NZXT Phantom case (too ***** big)

psu cooler master 500w

4 gb adata

geforce gt 240

asus m4a77t/usb3

samsung 500 gb

I switched the sata cables hds, cleaned the pieces and swapped memories of the place, it feels that I improved.

and also deactivated the cool n quiet.