I'm thinking about buying and then upgrading a 6,1 Mac Pro CPU. I've built a ton of PC back in the day and also did a few 5,1 to hex cores. Is the 6,1 much harder ? Should I buy a quad core with a d500 or 6 core with a d300 and then upgrade. I've found 8 core processors on eBay for around 350-400 https://www.ebay.com/itm/122678696251 Would this one work ? I don't do video editing so not sure if the d500 would work out better or not. I'm. Using refurbished and the price is a couple hundred difference between 6 core with d300 vs quad with d500.