Run CPU-Z on it and it will show CPU info as well as RAM speed FSB etc. Sorry for the mix up with the boards, I had it backwards. Dealing with the F1 to continue for microcode error is only a pain if you want your system to be able to boot without it. Back in the day I upgraded a Celeron 500Mhz socket 370 Compaq computer to a Pentium III 850Mhz socket 370 CPU and it came up with the same microcode error and there was no flash to support the Pentium III 850. The system ran fine and faster then ever with the powerful Pentium III 850Mhz. BUT... It was only running the 850Mhz CPU at 700Mhz with 100Mhz FSB as at post it stated 700Mhz so the Pentium III 850 was underclocked by 150Mhz, however performance far better than the Celeron 500Mhz. If your lucky its running at 3.2 otherwise it might be 3.0Ghz.
By the way... WARNING on the HP D530 motherboard. Greater than 75% of these boards that I dealt with for the HP D530 series had bad capacitors. If your board doesnt have swollen or capacitors that are leaking electrolyte your fortunate, but at my last job we had about 60 of these D530s and all of them started to acts up and I found that their capacitors around the CPU were swollen and leaking. This model was part of the capacitor plague that hit so many boards of that manufacturing period from HP, Compaq, Dell, Acer, eMachine, Gateway, Sony, and others.
Also the Fan speed controller for the CPU Fan on the D530 which are the desktop SFF version have been known to spin up so fast with the air ram type of CPU heatsink fan that they sound like a jet engine ready for lift off. So if its loud, its normal. The Pentium 4 2.8 HT - 3.4 CPUs run very hot and on the HP SFF's they will sound like a jet engine when the CPU load is high and the system ramps up the fan speed to cool itself. One way i was able to get the system to be quieter was to replace the air ram type heatsink with a standard socket 478 heatsink, but the fan speed controller does drive the fan pretty fast at times. Hopefully you have new thermal compound between the CPU and heatsink after the swap. Poor or reused thermal compound will cause it to run hotter than fresh thermal paste.
