Most i810 boards shipped with a 4MB display cache built onto the PCB to conserve system memory during operations requiring a Z-buffer. Since this feature is no longer present with the i815, the CUSL2 supports what Intel calls an “AGP Inline Memory Module (a 4MB AGP module).” Most gaming enthusiasts will opt for their own 3D accelerator due to the poor performance of the Graphics and Memory Controller Hub.

We haven’t seen AGP Pro connections available from any manufacturer besides ASUS, but then again, we’ve only seen an AGP Pro card from one manufacturer. For those looking to build a high-end workstation, the AGP Pro connector on the CUSL2 delivers four times as much power to the professional rendering cards that require extra juice.

In much the same way as ABIT gained fame with their SoftMenu III technology, ASUS includes their JumperFree CPU Throttle. JumperFree essentially allows the user to choose the ratio to run the System/Memory/PCI busses, and offers 155 different combinations for maximum performance. CPU and VIO voltages are also customizable to get the best signal clarity at a given frequency.

One of the most promising features of the i815 is the ability to run the memory clock asynchronously, meaning Celeron users don’t have to run a 66MHz memory clock. ASUS has also made it possible for Coppermine users to use PC100 memory by setting the system bus to 133MHz and the memory bus to 100MHz.

A full list of memory options allows hardcore tweakers to get the best possible performance from their RAM. For those who aren’t as technically inclined, the CUSL2 analyzes the installed memory and displays compatibility information, as shown below.

For those uncomfortable with configuring the FSB in software mode, there are 5 DIP switches that will set the FSB in hardware. Positioned neatly next to the IDE interface, OEMs shouldn’t have any trouble keeping CPU settings safe from customers who’d otherwise be risking their hardware.