G3258 overclocked 4.5 would it be a upgrade vs a i7 920 i have

WINTERLORD

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Sep 20, 2008
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was also wondering if the g3258 would take a huge performance hit in 4kgamming? would that chip overclocked to 4.4ghz be much an upgrade vs my old i7 920 clocked at 3.4ghz?

also can my i7 920 handle 2radeon 280x in crossfire or is there a bottleneck