ECS RS485M-M has only a few overclocking options, as it is normal with entry-level motherboards.

ECS RS485M-M (BIOS version: 1.0c – May 19th, 2006) overclocking options:

• Base clock (HTT clock): Can be adjusted from 200 to 500 MHz in 1 MHz steps.
• On-board video clock: Auto or 200/250/266/300/333/350 MHz.

As you can see, it doesn’t provide any fancy option like increasing the CPU voltage. On the other hand, it allows you to increase the video clock (Radeon Xpress X1100 default clock is 300 MHz) and also provides a myriad of memory adjustments, as you can see on Figure 5.

click to enlarge
Figure 5: Memory adjustments available on ECS RS485M-M.

With this motherboard we were able to configure the base clock of our Athlon 5000+ CPU to run at 218 MHz, making its internal clock 2,834 MHz, a 9% increase on its internal clock rate. With this overclocking Quake 3 performance increased 3.21% and PCMark05 performance increased 4.69%. We could configure HTT clock up to 220 MHz, but the system wasn’t stable enough.