I wanted to overclock my CPU, so I set my FSB jumpers to strap my memory, just like they said in the SBM article. (FSB1 1-2, FSB2 3-4, FSB3 4-5) (http://www.tomshardware.co.uk/core-2-overclock,review-31589-7.html)
Then I set my CPU frequency to 333, giving a FSB of 1333, just like they did in the article.
With these settings, they said they are able to select DDR2-667 or DDR2-800 in the BIOS. However, with these settings, my only option is for DDR2-533 in the BIOS. What's going on?
I found the documentation on the FSB jumpers confusing, and the settings from the SMB article weren't giving me the same numbers, so I tried every single FSB jumper configuration possible and I found the following FSB: DRAM ratios:
In the SMB article, they could select DDR2-667 and DDR2-800 at 1333Mhz FSB. Those are FSB: DRAM ratios of 1:1 and 5:6, neither of which are available to me with any jumper configuration.
Any ideas what's going on? Help is greatly appreciated.
I tried flashing and testing every BIOS available from ASRock, but they all gave the same result.
I also discovered that when I set the FSB jumpers to the same configuration as the SMB article, (FSB1 1-2, FSB2 3-4, FSB3 4-5) then CPU-Z v1.55 shows a FSB: DRAM ratio of 1:1 but the BIOS shows the DRAM running at 533Mhz with a FSB of 1333Mhz, which is a ratio of 5:4, so either the BIOS is lying or CPU-Z is lying.
Assuming the BIOS is telling the truth, I still haven't found out how to get a ratio of 1:1 or 5:6, both of which were options in the SMB article.