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Athlon II x4 645 worth upgrading to?

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August 22, 2010 4:05:06 AM

Hi,
I'm going to be upgrading pretty soon from my Athlon 64 x2 5000+ 2.6GHz that I've had for a few years now.

Originally, I've been looking at getting the x4 635 2.9GHz processor, but I noticed the 645 3.0GHz should be coming out soon. Will the 645 be worth the wait and extra $40ish in comparison to the currently avail, cheaper 635?
Thanks.

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a c 190 à CPUs
August 22, 2010 4:08:55 AM

The 645 will likely be 3.1GHz based off AMDs numbering scheme, but $40 for .2GHz is in no way worth it, you wont notice the speed up at all, most people wouldnt notice the difference between the 620 and the 640.
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a c 131 à CPUs
August 22, 2010 4:28:13 AM

Where are you buying from? Last I checked, AMD just lowered the prices of a lot of processors. Currently, all Athlon IIx4 processors are at the $100 mark.
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August 22, 2010 6:30:45 AM

Just grab the 620 and overclock it yourself. That's what i did. Running it at 3.2ghz stable on the stock heatsink. No temp problems at all.
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August 22, 2010 5:32:04 PM

Alright, so then the 645 is now out of the question.

Yeah, the 635 is $100 at my local pc store, and I checked Newegg for the 620 and it's $90. I figure $10 for an stock higher clocked CPU wouldn't hurt, and then I can overclock it to something higher than 3.2GHz.

@mileylol, if you have no problems with the stock heatsink, then a Thermaltake TR2-R1 should do just as good, yeah?
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a c 131 à CPUs
August 23, 2010 1:36:23 AM

mileylol said:
Just grab the 620 and overclock it yourself. That's what i did. Running it at 3.2ghz stable on the stock heatsink. No temp problems at all.

Same here, but if you look hard enough now, pretty much all the Athlon IIx4s can be found for $100.
Actually, I also swapped out my stock heatsink for an older stock heatsink that came with a socket 939 Athlon 64x2. 5*C lower temperature on load with the same compound.
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August 23, 2010 3:47:31 AM

^Sounds good. Yeah, I found the 635 for $100, I'm definitely going to get it. Btw, what was your reason for using an older heatsink?
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August 23, 2010 3:47:47 AM

Best answer selected by markusaurileus.
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a c 131 à CPUs
August 23, 2010 1:00:51 PM

markusaurileus said:
^Sounds good. Yeah, I found the 635 for $100, I'm definitely going to get it. Btw, what was your reason for using an older heatsink?

I got it from a friend who replaced his and I wanted to see how it cooled. Turned out that it cooled a bit better than the Athlon IIx4 cooler. I do find it odd though. The new quad is a higher TDP and has this weird spindle design. I assumed the complex design was for better cooling. Turns out it isn't lol. I'm keeping an eye out for a free stock Phenom II cooler now.
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August 24, 2010 2:03:19 PM

Hmm, that's interesting. When I do get the new items, I'll test out my old tr2-r1 cooler and compare it to the stock one. A dot of arctic silver should to the trick paste-wise, right?
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