Hello, I just installed a Core 2 Quad Q9500 that I bought on eBay. I had a Core 2 Duo E8400.
I do not think I got the chip I bargained for. In BIOS it shows up as a 4 core chip with HyperThreading. In CPU-Z it shows up as a 2 core chip with 2 threads. According to the Intel spec page it should be 4 cores and 4 threads.
In all of my performance testing, this thing is slower. To me it seems that 1/2 of the CPU is not functioning. Is that possible? Could it be that I need to install a fresh copy of windows to recognize 4 cores? Is there a way to check/flash/turn on all 4 cores?
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Bios up to date? Check start -> run -> msconfig -> boot -> advance options -> number of processors
Number of Processors was checked and set to 2 cores. But there was no option for 4 cores, so I unchecked the box. I will reboot and report back.