I've been trying to upgrade my processor for a while but I just haven't found a processor that is compatible with my computer. Today I found a AMD Athlon 64 3400+ 2.4GHz Processor and I think it will be compatible with my system. I have a compaq presario SR1520NX with a ASUS K85-LA (salmon) motherboard. The processor socket type that I have is 754 and my current processor is a AMD Sempron 1.8 GHz. The AMD athlon 64 3400+ says it has a 754 socket type as well. I don't really know much about processors so I'm assuming the socket type is what really matter in term of compatabilties right? And a couple of last questions, is the AMD athlon 64 3400+ better then my current AMD Sempron 1.8GHz processor? Will the AMD athlon 64 3400+ processor be compatible with my system? The processor will make my computer run faster and smoother as well correct? two last question, does the processor need any specific watts or something related to that and will I need a new fan? Thank you for your time.