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Why does a better CPU have less L1 Cache?

Last response: in CPUs
June 20, 2010 6:21:20 PM

edit: Less/Non-existent L1 Cache and marginally better L2 Cache

This is my old CPU:
AMD Athlon 64 X2 4000+ Brisbane 2.1GHz 2 x 512KB L2 Cache Socket AM2 65W Dual-Core Processor
L1 Cache 128KB+128KB
L2 Cache 2 x 512KB

This is my new CPU:
AMD Athlon II X3 440 Rana 3.0GHz 3 x 512KB L2 Cache Socket AM3 95W Triple-Core Desktop Processor
L2 Cache 3 x 512KB

I don't know how L1/L2 Cache works exactly, but why is it that the new CPU has no L1 Cache and only marginally better L2 Cache?

More about : cpu cache

June 20, 2010 6:21:50 PM

I do not know

Best solution

a b à CPUs
June 20, 2010 6:37:41 PM

Actually the Athlon II has 64KB+64KB of L1 cache along with the 512KB L2 cache per core.
Cache isn't the only way to make a processor better. They have improved many other parts of the Athlon II compared to your Athlon 64.
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June 20, 2010 7:45:45 PM

I see. Looks like Newegg didn't mention that. Maybe it's a given for the Athlon II's.

Thanks for the help.
a c 81 à CPUs
June 20, 2010 8:02:22 PM

How do you expect Level 2 to be present (and named so) without Level 1 being there..!! Anyway, cache speed and size used to be very important with earlier generation processors.. Not so very much apparent nowadays with recent advances in core multiplexing and architecture.. BTW, i don't believe athlon II X3's to be very much better than the X2's..
November 5, 2010 5:55:52 PM

Best answer selected by forzainter.