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AMD Athlon™ II 645 Quad-Core Processor vs AMD Phenom II 955 quad core process

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October 27, 2011 2:02:01 PM

I am trying to find out which is the better computer AMD Athlon™ II 645 Quad-Core Processor vs AMD Phenom II 955 quad core processor . The Athlon has 6GB RAM the phenon has 4GB RAM
October 27, 2011 2:10:38 PM

the phenom is a bit faster than the athlon, and processors don't have ram, they have cache. the phenom has more cache than the athlon. The phenom requires more power to run than the athlon too. good luck.
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October 27, 2011 2:13:55 PM

Phenom II will have better performance, however, if you already own the Athlon, i wouldn't upgrade. If you are debating between the 2 for purchase, get the Phenom.
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October 27, 2011 4:00:27 PM

The per core "Deneb" beats the per core "Propus" in gaming and multi threaded applications, and if you're going to be mostly gaming get the 975/980 BE it's the only CPU that performs great in gaming compared to I5 2500K and better than any X4/X6 CPU from AMD.
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October 27, 2011 4:02:06 PM

955BE will clock to over 4.0GHZ, so if you can overclock save your money. if you wont OC, get the 980BE. Higher clock is always better.
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October 27, 2011 4:04:21 PM

955BE will clock to over 4.0GHZ, so if you can overclock save your money. if you wont OC, get the 980BE. Higher clock is always better.
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October 27, 2011 4:04:27 PM

A lot of people suffer to get a stable 4.0 GHz with the 955/965 BE, only able to get a stable 3.8/3.9 that's why i excluded the 955 BE.
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October 27, 2011 4:05:48 PM

oh...i didnt realize this. I hit 4.23GHz with mine, and it was my first time. i bought a really good aftermarket HSF though, with Zalman SGT2 paste.
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October 27, 2011 4:15:57 PM

As i stated above, not all can get a stable 4.0 even if it's a BE. I can hit 4.5 GHz and make the PC boot, but we all know that beyond 4.5 GHz with P II requires more than a water cooling.
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October 27, 2011 4:18:26 PM

Yes, its understood that OC'ing is a relative aspect depending on each chips capabilities, but 4.0GHz is very commonly hit. Im not sure why you are making as much of a deal about this. Also, for the great common sense factor, a quad core running without Hyper-Threading will see no major performance boosts past the 3.8-4.0 mark anyways. Correct me if im wrong?
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October 27, 2011 4:28:24 PM

Quote:

Quote:
can bench happily with my B55 at 4.5 all day long however once tested with prime95 it bsod's after 20 minuites...

That's why it's called unstable.
Quote:
The B55 sits happy at 4.2ghz for a everyday OC.
It is more than just what cpu you have, i was using a top of the line 790FX motherboard (MSI 790FX-GD70 4-way crossfire-x certified).
PSU and ram also play a good part in a decent and stable OC.

+1 that each board is not the same in OCing, and it's an important factor, but no difference between 4.0 and 4.2 GHz specially in gaming...

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October 27, 2011 4:36:22 PM

casualbuilder said:

Quote:
Yes, its understood that OC'ing is a relative aspect depending on each chips capabilities, but 4.0GHz is very commonly hit. Im not sure why you are making as much of a deal about this.

I'm not confusing or convincing the thread, and you must understand that it's not a must to get 4.0 GHz stable because you have a BE CPU, i was posting and making fun of people in the Overclocking section because they were'nt able to hit 4.0 GHz with a BE even though it's just a bumping in multiplier and voltage.
i was able to get a stable 4.1 GHz, after a BIOS update i'm only able to get 3.7-3.8 until i flashed back.
so, again any overclocking achievement is not a must and it depends on a lot of factors.
Quote:
Also, for the great common sense factor, a quad core running without Hyper-Threading will see no major performance boosts past the 3.8-4.0 mark anyways. Correct me if im wrong?

I don't understand this statement

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October 27, 2011 4:44:11 PM

exactly, so a clock of 3.8-4.0 is all you really need for performance...no? Past this, its just icing on the cake...no body.
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October 27, 2011 5:18:45 PM

Don't be ridiculous guys. It doesn't make a difference in practical performance if you only reach 3.9 GHz vs your friend's 4.2 GHz, except maybe your ePenis will grow a bit smaller.
a b à CPUs
October 27, 2011 5:21:57 PM

^ +1

That is what i was trying to say...whether it came out that way or not, i apologize for the confusion.
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October 27, 2011 5:31:24 PM

Totally, me too. I'm just saying it won't make a big difference in gaming and other normal use.
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October 27, 2011 6:17:34 PM

Come on, all those "answers" for something easy?

Athlon II X4 645: Non L3 cache plus locked multiplier
Phenom II X4 955: L3 cache plus unlocked multiplier.

What's better? The X4 955 because the L3 cache that gives you better performance in games and average and also can overclocker better.
October 27, 2011 6:30:51 PM

thank you for the simple answer although I don't understand nonL3 cashe, and L3 cash. I would assume that mean one does not have cashe? This computer is not for a gamer if that makes a difference
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a b À AMD
October 27, 2011 7:15:34 PM

What is the rig for? What are the prices of both CPUs? Correct, the Athlon line won't have L3 cache memory.
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October 27, 2011 9:42:02 PM

I assume from the original post you are looking at 2 ready built PCs and choosing between them if so what are the full specs? Also your use may make a difference to whether and Athlon with more RAM is better than the Phenom with less but generally 4Gb is enough and the Phenom is the better CPU (mainly due to the L3 Cache, the Athlon has only L1 & L2 cache).
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October 28, 2011 12:42:27 AM

simon12 said:
I assume from the original post you are looking at 2 ready built PCs and choosing between them if so what are the full specs? Also your use may make a difference to whether and Athlon with more RAM is better than the Phenom with less but generally 4Gb is enough and the Phenom is the better CPU (mainly due to the L3 Cache, the Athlon has only L1 & L2 cache).


That's exactly what I think he was asking. I think everyone completely missed the point. At least that is how the question was worded.
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