yeah, when one purchases computers from big companies like HP, you really need to do your homework. just because a computer looks good and sounds like its good, doesn't mean it is good.
before this thread i had never heard of an Athlon64 3300+. but like what DJChris said, it probably has sh*t for cache. so in the end your 3300+ with probably 128, 256, or MAYBE 512KB of L1 or 2 cache is slower than my 3200+ with 1MB of L2 Cache. you really need to know what you're buying so you're not sitting in this forum asking if there is any sort of way to upgrade cache in a CPU.