hmm still dont understand clawhammer or newcastle?

[Onkyo]

what is the difference i read the sticky but still dont get anything please help.

thinking of the a64 +3200. from newegg

 

[DJCorpse]

Guatam wrote this up and i found it very informative: http://www.ocforums.com/showthread.php?t=306418&page=1&pp=30

 

[michaelkahl]

basically i think that the newcastles only have 512kb L2 cache while the Clawhammers have 1024kb or 512kb...but esentially the same

 

[hitechjb1]

what is the difference i read the sticky but still dont get anything please help.

thinking of the a64 +3200. from newegg

Let's consider only the CG revision of the A64 ClawHammer and NewCastle. CG revision is what one should buy.

Based on the model number/OPN code, there are ways to tell a CG revision. Here lists all the CG revision for 754, 939 ClawHammer and NewCastle. By reading the CPU model number or from sellers' listing, one can tell whether a CPU is a CG revision.
940, 754, 939 CPU models and specifications

Simply put,
a CG rev. ClawHammer has 1 MB L2 cache.
a CG rev. NewCastle has 512 L2 cache.

There are two questions commonly asked:
1. Which would overclock better?
Most believe NewCastle may be able to overclock 100+ MHz better, IMO there is still not enough data to completely confirm that.

It would take a NewCastle running 100-150 MHz faster to break even with a ClawHammer (when system running the same frequencies of memory and system bus) for average performance due to the difference in L2 cache size.

2. For the same frequencies of CPU, memory bus, system bus (HT), ..., how to compare the performance. This post discusses that:
How to compare ClawHammer and NewCastle