775 cpu's were/are great processors...The problem is not being able to find replacement motherboards for them:
I just threw a system together this weekend to set up in another room to use as a spare rig.
I used extra parts that I had laying around, and most parts that I got for free:
Motherboard: Asus P5N-D - My son gave me this board after Santa brought him a new Asus P8P67-Pro board.
Processor: Intel® Core™2 Duo Processor E8400 - I got 2 of these out of Dell office computers that were out of warranty and were going to be disposed of, Also got 2 - 250 gb 7200 sata2 hard drives
Ram: 8 gb - Courtesy of Corsair from a bad 2gb kit that was rma'd and they no longer make so they replaced it with 2-4gb kits..cost me $6.00 to ship the bad kit to them..not a bad deal for a kit that was at least used for 6 years.
Graphics Card: EVGA GTX 285 that I purchased when they first came out.
SSD: OCZ Vertex 2 128 for OS
The rig is running great and I am getting ready to install a few games on it today.