Overclocking GeForce 4 MX420 PCI

[EglsFly]

A friend of mine just bought a GeForce 4 MX420 PCI card because he has an extra PC that does not have an AGP slot.
Anyhow, question is, what kind of overclocking can be achieved?
Any reviews out there covering overclocking the MX420?

Thanks.

 

[Mingon]

around 300 core / 230 memory