Not sure on your Athlon if it's a Barton or Thunderbird. You need to check the Frequency that CPU is working at. For Thunderbird it will be set as a 133 for the Barton it will be a bit higher. Try it at 133 in the BIOS
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Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.