Heres a fasssssst, upgraded 12-core Mac Pro tower I built thats VERY good for production use. Due to the high price of the components inside of it, the selling price is $1,200 FIRM - NO less - NO offers - NO trades. I have two 2 of these, the other one has 96Gb RAM, no USB 3.0 but has a Blu-Ray drive in it, for $1,100... also some 2009-2010 quads, 6-core 8-cores from $500 to $850, call me to inquire about them. This particular tower is a genuine 2010 5,1 model, was previously an 8-core 2.4, that I upgraded with a set of 3.46 6-core processors. These processors Turbo Boost to 3.7GHz and have hyperthreading to 24-core threads... this translates into some superior processing ability for the toughest software you typically use.The RAM has been upgraded with six 6 brand new Kingston 16Gb PC3-10600R a total of 96Gb, running full speed at 1333MHz. By having the RAM set up like I have it 1 open slot for each processor gives you RAM thats running in Triple Channel Mode, making your RAM into whats similar to a RAID set up for your hard drives, allowing the RAM to be used in a complete amount instead of progressing from one card to the next and so on. When you get ready to upgrade to more RAM, you just need to add 2 x 16Gb to give you the maximum 128Gb that these machines can run.The total drive space on this Mac Pro has been upgraded to 7Tb, which includes a brand new Hynix Gold S31 1Tb SSD and two refurbished as new 3Tb HDDs. Theres also one hard drive tray still open for an additional drive you might already have or want to purchase in the future. I have a newly-installed later OS and its running well, and I even included some later model production software FCP X LP X, but feel free to give me a call to discuss what OS you might need if you plan on using some older software that might not be compatible with a later OS.For the graphics I have tried to keep the price down, while keeping a Metal-supported card in it to run later operating systems, so I have installed a strong 3Gb Gigabyte Radeon HD 7950 with the options of HDMI, DVI and 2x mini DisplayPorts. This triple-fan card gets the job done.Here are the specs of this specific machineApple A1289 Mac Pro Tower mid-2010 Upgraded with 2 x 3.46GHz Intel X5690 6-core ProcessorsTurbo Boost to 3.7GHz Hyperthreading to 24 Core Threads Upgraded to 96Gb of New Kingston PC3-10600R 1333MHz RAM running in Triple Channel mode Upgraded with a New 1Tb Hynix Gold S31 Solid State Drive up to 560mbs readup to 525mbs write Upgraded with 2 x 3Tb Hitachi 7,200 RPM Hard Disk Drives purchased refurbished as new for this tower Upgraded with a 3Gb Radeon HD 7950 Metal-Supported Graphics Card 1x DVI1x HDMI2x miniDisplayPort Upgraded with New 4-port USB 3.0 PCIe Card increases transfer rate of USB 3.0 external drives Factory Original 2010 Dual Layer DVDCD SuperDrive Factory Original 802.11bgn WiFi Card Factory Original Bluetooth Wireless Device CardThis operational condition is excellent, everything works GREAT and its a pleasure to use. For your peace of mind, the tower is being sold with 30-Day, 100 Parts Labor Warranty. After the 30-days I will still provide the repair labor at no extra charge, for as long as you own the tower. After 30 days you just pay for any parts required for upgrades andor repairs.The cosmetic condition is good, with some typical scuffs and scratches you see on the aluminum towers, but the handlessupports are firm and standing tall like they should.This Mac Pro is being sold by me, iMike with the iMacs your Macanimal care rescue guy since 2006.If you have questions about the OS andor production software, just give me a call. Id be happy to discuss everything with you. When youre ready to buy, the tower sells from my home only in Cedar Hill MO 63016 about 18 minutes straight out GravoisHwy 30 from I-270. Sorry - NO shipping - NO Delivery - NO meeting anywhere. Payment by cash, Zelle from your bank to mine, or possibly your credit card through your PayPal account ID required. Some great air to breathe out this way, makes for a nice drive out to a relaxing, calm area on my wooded property. And if youre an animal lover, I have some potbellied pigs, free range chickens and some dogs here at my State-Registered non-profit animal care rescue for you to enjoy... and a few you probably wont enjoy because theyre just too darned friendly.