ASUS P4C800 Deluxe (875P)

FSB Overclocking Results

This is just the second review since we switched our FSB Overclocking Testbed, and so far we've had no complaints. The following is the setup we used for FSB overclocking on the P4C800 Deluxe:

We were pleased that the ASUS P4C800 was able to reach 243MHz FSB using the above overclocking setup. As shown in our Gigabyte 8KNXP Ultra review, 240MHz FSB and higher is not out of the question from an 875P motherboard, and we're sure things will get even better as more BIOSes and board revisions come along. For now, the primary concern is not how high your FSB can go but how high your memory can go before your FSB bandwidth outstrips your memory bandwidth. There's no point in overclocking your FSB to 243MHz if your memory is running at 133MHz; your memory needs to be running synchronously with your FSB (e.g. 243MHz FSB with 243MHz memory frequency) to maximize the performance of your system. Otherwise there's very little point to FSB overclocking besides the fact that it raises the core clock speed of your CPU, which is never bad. As we mentioned in our Gigabyte 8KNXP Ultra review, we will be running several different FSB/Memory frequency combinations to see exactly what scenario is best suited for maximum performance.