The L1 cache 32kb i believe, and the L2 is 256kb for sure.....
The L1 and L2 cache on the coppermine are both full speed(e.g. 733 mhz in your case)
The only way you are gonna be able to add some cache is to first aquire a plant that has all the right tools(for the sake of argument, let's say it only costs approx 1 billion dollars), then you need to get the *top secret* plans from Intel, and then you need to invent some new technology which will let you move little itty bitty tiny things around without damaging them, then you actually need to fabricate the cache, insert it into the processor, and get everyone aquainted again.....
Not too bad of a deal, huh, only a few billion to add some cache to your P3.......
The original P4 has 256kb, northwood has 512, but instead of a 200% increase in speed(since there's double the cache), there's only about a 30% increase........
You wanted to know if the L1 cache is faster than the L2, and the answer is yes, because the L1 is 16(?)way associative, and the L2 is only 8(?)way associative.
zs