Intel Pentium 630 on Asus P5P800 problem

Hello.

My friend has the following problem:
- he has a 630 (2 MB L2 cache)
- motherboard Asus P5P800 - chipset 865 (BIOS v. 1011)

Problem is he can only see 1MB L2 cache. (read by CPU-z and other programs).
On the Asus site, they say this motherboard supports processors with 1MB L2 cache, but 630 is in the CPU support list since BIOS v.1007.

Do you know if the extra 1MB L2 cache can be enabled. (there's no option in BIOS). Is this cache used and there's only a bad reading?

Thank you.

A possible solution -

flash the BIOS again even if you have already done so to the same or newest version available and do not interfere with the update at all during the process

Also a good MB is the ASUS P5LD2.