I have a mac 3,1 with dual Xeon's. It definitely has 2 CPUs because when I bought it I checked system information and is said 2 CPUs and I put better thermal paste on both of them just just to improve thermals which weren't bad but I figured it wouldn't hurt.
When I put everything back together it booted and I think I remember checking to make sure both cpu's where working correctly which, if I did ally check, they both where.
I recently downloaded cinabench and saw that is only recognized 1 cpu but I thought nothing of it and assumed it was just cinabench being weird.
Today I purchased a used hd 5570 and once I had installed the card and booted the computer I saw that in the system info it too only recognized one cpu. (I am fairly certain it had nothing to do with the card because in hindsight it seemed slower than when normal.
If you need any more information just ask, I'm happy to give it to you. I'd really appreciate some help, thanks.
- Model Name: Mac Pro
- Model Identifier: MacPro3,1
- Processor Name: Quad-Core Intel Xeon
- Processor Speed: 2.8 GHz
- Number of Processors: 1
- Total Number of Cores: 4
- L2 Cache: 12 MB
- Memory: 16 GB
- Bus Speed: 1.6 GHz