I believe I am parting with my recently acquired 5.1 Mac Pro. Stock, it came with... Dual 2.4 quad 12GB Memory 5770 1TB HDD Super Drive Over the years of dabbling with computers, I have acquired several miscellaneous parts laying around. If I am going to be sending the system off to eBay, I am curious if the presumed buyer would prefer to have the "stock" system, or a faster system. If faster, I wonder what the marginal cost/value would be for... 16GB or 32GB of memory Dual hex core processors 80GB SSD? 160GB SSD? 256GB SSD? Multiple 1TB HDD? Blu Ray drives, or adding a second DVD/RW? The cMP is such a joy to open up and tinker with (easily most incredible enclosure I have ever seen) that it would take all of 30 minutes to upgrade to hex cores with more memory and toss in an extra drive or two, but if it costs me $250 to add dual hex, and only adds $200 in relative value, it simply isn't worth it.