Gigabyte has given all its DDR2-supportive motherboards based on the Intel P45 and P43 chipsets a BIOS upgrade with which they now support assured overlocking headroom till DDR2 1333+ for the P45 series and DDR2 1200+ for the P43 series, with the "+" denoting it could go higher. DDR2 1333 and DDR2 1200 memory would be natively supported by the motherboards. The following motherboards benefit from the BIOS update.

Gigabyte Intel P45 Motherboards:
GA-EP45-DQ6
GA-EP45-DS5
GA-EP45-DS4P
GA-EP45-DS4
GA-EP45-DS3P
GA-EP45-DS3L

GA-EP45-DS3LR
GA-EP45-DS3
GA-EP45-DS3R
GA-EP45-Extreme

Gigabyte Intel P43 Motherboards:
GA-EP43-DS3L
GA-EP43-S3L
GA-EP43-DS3
GA-EP43-DS3R

BIOS files can be found on product pages of each motherboard on the company website.