AMD Phenom II 521 1 TB 3.50GHz 2MB L2 Cache vs. AMD Athlon II 220 Dual-Core processor 2.8 GHz 1 MB L2 750 GB?

I am looking at these two HP computers. The first one is a combo which includes a 20 inch monitor for $498, the second one is just the computer for $358 (in which case I would buy HP monitor on sale at Best Buy for $89. My primary useage will be for Level 2 stock investing (real time quotes). But I want the most efficient quickest computer I can get.

The first HP will be significantly faster than the second for not much more price point wise. It will be able to handle much larger calculations and it will be able to do them 60% faster. I would definitely recommend the first one.

Phenom II is a faster processor than Athlon II.

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Today a base stuffing of desktop personal computers - microprocessors, system payments, memory, graphic accelerators and other allow to achieve improbably powerful indicators of productivity. It is interesting that according to researches, the average user uses possibilities of modern personal computers only half or even less.