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Discussion Starter #1
between......................

Intel Pentium® 4 660 Processor Prescott 3.6GHz, 800MHz FSB, Socket 775, 2MB Cache w/Fan and Heatsink, 2MB Cache, 90nm.

and....................

Intel Pentium® 4 561 Processor Prescott 3.60GHz, 800MHz FSB, Socket 775, 1MB Cache w/Fan and Heatsink, 1MB Cache, 90nm

and which one is better.the 2nd one is $20.00 more than the 1st one is, and has LESS cache?? just curious.............as to which one i wanna get
 

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the 660 is better because it has 1mb more cache, and it is a newer chip design, but its weird that the 561 cost 20$more...
 

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Quote:


Originally Posted by bryman31

yeah it is weird......check it out here on zipzoomfly

http://www.zipzoomfly.com/jsp/Produc...10426&SortBy=D

I wouldnt call it wierd.. Because Intel isnt making the 5xx series of processors anymore, so there becoming harder to find new... The 6xx series on the other hand is the latest single core processors from intel. So there cheaper in the fact of more availability.
 

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The "1" denotes that the processor uses EM64T instructions, which makes it a 64-bit CPU.

Other than that the main differences are that the 6XX has a 2MB cache and the 5X1 has a 1MB cache. The 6XX also has Speedstep (referred to as EIST or Enhanced Intel Speedstep Technology), whereas the 5X1 does not. Both CPUs make use of Execute Disable (or XD) which prevents viruses from actually executing on your system.

One thing I did notice that was different from the two is that Newegg states that the 6XX series can use lower voltage for it to run stable. 1.388 (6XX) vs. 1.4 (5X1 and probably all 5XX as well). Pretty interesting, I think this may be due to the EIST function, but I might be wrong.
 

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The main difference is that the Intel 500 series is built on the Prescott core, but the 600 series is built on the Prescott 2M core. The 600 series incorporates an extra 1MB L2 cache however it operates approximately 14% slower than the cache on the 500 series. The extra cache outways this downside though

There are other differences, for example they can handle more voltage better but thats all you really need to know.
 

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Discussion Starter #9
Quote:


Originally Posted by Chim3ra

The "1" denotes that the processor uses EM64T instructions, which makes it a 64-bit CPU.

Other than that the main differences are that the 6XX has a 2MB cache and the 5X1 has a 1MB cache. The 6XX also has Speedstep (referred to as EIST or Enhanced Intel Speedstep Technology), whereas the 5X1 does not. Both CPUs make use of Execute Disable (or XD) which prevents viruses from actually executing on your system.

One thing I did notice that was different from the two is that Newegg states that the 6XX series can use lower voltage for it to run stable. 1.388 (6XX) vs. 1.4 (5X1 and probably all 5XX as well). Pretty interesting, I think this may be due to the EIST function, but I might be wrong.


so i should get the 531 instead of the 6?? i think thats what your saying?
 

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No, I didn't make any recommendation either way. Just stating the facts about each processor. If I were to pick one, I'd get the 6XX CPU, due to the fact that the 2MB cache gives a pretty significant improvement to the overall performance of the processor.
 
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