The RAID controller on the board in question is different. The RAID solution is the Intel® Embedded Server RAID Technology (CTRL+E). This controller does have the limit for 2TB drives, and the maximum volume size is 2TB as well.
The Intel® Rapid Storage/ Matrix controllers on ICH8 chipsets do support volumes over 2TB (up to 256TB) for data volumes. Then, you should be able to use GPT partitions with this controller.
Intel® Rapid Storage Technology (Intel® RST) RAID Features by Chipset/Controller Hub
Be aware of these are RAID controller limitations. You may create volumes larger than 2TB using Operating System software RAID.