Why get 512k cache when you could get a full 1mb cache? Thats double the cache size, it has to help. I really dont know what processor cache dose for you, but id rather know I have the best then be kicking myself for buying something inferior when i could spend a little extra money and have the best.
AMD Athlon 64 X2 4400+ Toledo 1GHz FSB 2 x 1MB L2 Cache Socket 939 Dual Core Processor - Retail
Theres an X2 with the Toledo core. 560 bucks on newegg.
Price/clock speed Comparison: (NewEgg prices)
3800 Manchester 2.0GHz clock - $374
4200 Manchester 2.2GHz clock - $473
4400 Toledo 2.2GHz clock - $559
4600 Manchester 2.4GHz clock - $690
4800 Toledo 2.4GHz clock - $884
So... If your on a budget, but still want an AMD X2 processor, you could go with the 3800 Manchester, and im sure it would overclock fairly easy to equal or pass the 4600 Manchester or 4800 Toledo clock speeds, but your still stuck with 512Mb cache. But if you spend 184 more dollars you could get the 4400 Toledo, and overclock it equal to or past a 4800 Toledo, and then you get the nice 1mb Cache. So it really depends how much you want to spend. But you probably already knew that, lol. Just thought id put it in words for ya i gues. Either way, if you plan to overclock I would say get the cheapest Manchester or Toledo core and then overclock it to equal or pass the expensive Manchester or Toledo cores.
If someone could jump in here and teach us n00bs what processor cache is used for and how important it is, please do! Or if it has already been discussed, please drop us a link!!!
Thats my 2 cents.