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AMD Phenom II X4 840 CPU Review

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Nice review - thanks. I would have been curious how the 840 stacks up to the 820 because:
  • They're about the same price,
  • The 840 has a higher clock while the (Deneb family) 820 has L3 cache,
  • and I bought the 820 ;)

I suspect that the difference in stock clock (2.8GHz for the 820 vs. 3.2 for the 840) would make a bigger difference than the cache.
 
I wonder if there is unlockable cache on that thing, or whether it's just a rebadged AthII.
The 810 my dad had for a while was 4mb L3 that could be unlocked to 6mb just like unlocking cores.
 
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