With the ease of setup and the minimal resistance I encountered using the board at stock settings, I was ready for an overclocking joyride. After many failed attempts, I was able to get the system stable with a maximum FSB of 215 MHz. However, to get even this minimal overclock, I needed to reduce the LDT Bus Frequency to 400 MHz, set the DRAM Clock option to DDR333 with very relaxed memory timings set across the board, set the VLink Data Rate to 4x instead of the preferred 8x, disable both 1 WS AGP read and write options, and up all the system voltages.
I am not fully sure what all the issues are with Athlon64 754-pin part OCing just yet, and of course I am not prepared to shake my finger at ABIT as the guilty party. VIA and AMD come into play in this as well. Is the relationship between the HyperTransport, AGP, and memory busses coming into play? Some of it is not so easy to figure into black and white currently. We are hearing rumors that this will be addressed by VIA but there is not official word on that just yet.
The above overclocking setup at DEFAULT voltage allowed us to reach a stable FSB of 219MHz. Running our standard Quake3 bench at 2.4GHz yielded Q3 test scores right at 500fps. The maximum overclock, unfortunately, remains a mystery. As you will see in the benchmark suite, the standard test performance with the new F1 BIOS is outstanding. However, there are still problems with multipliers and FSB settings on this motherboard. 11.5X worked until we hit 215FSB; then, mysteriously reset itself to 210, no matter what we set. The 12.0X multiplier worked at 200, and would start generating mysterious FSB and multiplier values above this setting. We even tried downclocking the multiplier, but could not set higher FSB settings that would be retained. We suspect Gigabyte will quickly fix this because this is a very promising board, but for now the Maximum overclock simply cannot be reported.
