Replace the ICH10 South Bridge with ICH10R and you get Gigabyte GA-EP45T-DS3R.
Since we have a universal chipset, why don’t we combine both memory types on the same PCB? Please meet Gigabyte GA-EP45C-DS3.
Using the same principle, we can obtain a new model with RAID support - Gigabyte GA-EP45C-DS3R.
The third group of mainboard models starts with Gigabyte GA-EP45-DS3P. It also uses ICH10R South Bridge, two Gigabit network cards and an additional IEEE1394 controller. Unlike other mainboards from S3 (Smart, Speed, Safe) series from the previous group, one of its PCI slots is replaced with a PCI Express x16 slot working at PCI-E x4 speed. The chipset cooling system also got a heatpipe and a heatsink on the voltage regulator transistors.
The same mainboard with three-heatpipe chipset cooler is called Gigabyte GA-EP45-DS4 and belongs to the S4 series (Smart, Speed, Safe, Silent Pipe).