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Intel Pentium II (300 MHz to 450 MHz) or AMD K6-III+ (400 MHz). Do not select a Pentium III at 1 GHz unless you have a top-tier modern host CPU, as emulation speed will drop below 100%.
Once installed, go to Control Panel > Sounds and Audio Devices to confirm that audio mixing is fully active. 6. Optimizing Performance and Troubleshooting
If you're looking for an alternative with a more modern interface and similar accuracy, you might also want to check out 86Box . Installing Windows XP SP3 in PCem
What specific do you plan to run inside Windows XP?
Unlike standard virtualization, which uses a "virtual" generic driver, PCem allows you to emulate specific motherboards and GPUs.
For Windows XP, consider using a or a slower Pentium II variant (e.g., 233 MHz instead of 400 MHz) to reduce emulation overhead.