It doesn't seem tRC is available for manual setting in BIOS. So don't worry about it. It will be calculated by BIOS.
OK, your sub-timings was not acceptable by the BIOS. Clear CMOS, Load Optimized Defaults in BIOS, re-start, go into BIOS to set the main timings 9-9-9-24 2T and leave the sub-timings on Auto. Increase RAM Voltage 1.53v VCCIO 1.15v and if still gives you error, increase one notch and try again.
OK, your sub-timings was not acceptable by the BIOS. Clear CMOS, Load Optimized Defaults in BIOS, re-start, go into BIOS to set the main timings 9-9-9-24 2T and leave the sub-timings on Auto. Increase RAM Voltage 1.53v VCCIO 1.15v and if still gives you error, increase one notch and try again.








