Is there any difference between an Athlon II X4 640 clocked at 3GHz and Athlon II X4 620 overclocked to 3GHz? Are the heatsinks or fans different? If not will the temperatures be the same with stock cooling? sorry if it's a dumb question I'm a noob at this kind of stuff.

from what i have gathered teh 620 and 640 are the same core (propus)

the 640 has the same amount of cache etc per core the only difference i can see is clock speed
640 p/n: ADX640WFK42GM
620 p/n: ADX620WFK42GI

hope that helps

.Aaron

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Experience is a wonderful thing, it enables you recognise a mistake when you make it again

M is C3 and I is C2. C3 overclocks better.

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Lad

I have had this name before the public announcement of L4D.

How does it overclock better? does it stay cooler? is it more stable at higher clocks? I don't even know what C3 or C2 mean. I just want to get the most "bang" for my buck, so I thought I could buy the cheaper 620 and then overclock it past the speeds of the 640.

The C3 is a later binning of what was C2. The later bins have better overclocking. Less voltage so less heat.

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Lad

I have had this name before the public announcement of L4D.

Thanks for all the help. I'll be the 640

I've noticed that the 635, 640 and 645 have the C3 binning because of the M instead of the I. Does that mean they are all the same except for the clock that was set in the factory? does it mean the 635 can be OCed to the same speeds as the 645? If so I'll get the 635 and save a few bucks ($28 to be exact)

Edited: 09/22/2010 at 02:05 AM by jorge89

If they have an M then they are probably going to overclock alike. These do not offer unlocked multipliers however! You must overclock through the system's bus and you probably need to lower other associated multipliers.

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Lad

I have had this name before the public announcement of L4D.