BIOS and Overclocking
| CPU Reference Clock | 150 - 500 MHz (1 MHz) |
| Clock Multiplier Adjustment | Yes |
| DRAM Ratio | All CPU On-Die Memory Controller Ratios |
| PCIe Clock | 75 - 200MHz (1 MHz) |
| HT Link Multiplier | 1x - 9x CPU Reference Clock |
| CPU Vcore | 0.0000 - 1.5625 Volts (0.0125 Volts) |
| MCT Voltage | 0.0000 - 1.5625 Volts (0.0125 Volts) |
| HT Link Voltage | 1.20 - 1.35 Volts (0.05 Volts)* |
| PCI-E Voltage | 1.20 - 1.35 Volts (0.05 Volts) |
| nForce 780a SLI MCP Voltage | 1.10 - 1.25 Volts (0.05 Volts) |
| DRAM Voltage | 1.80 - 2.20 - 2.70 Volts (0.05, 0.10 Volts) |
| CAS Latency Range | tCAS: 3-7; tRCD: 3-6; tRP: 3-6; tRAS: 5-18 |
ASRock provides a unique range of processor voltage adjustments, perfect for underclocking as well as overclocking. Similarly, the HT clock can also be lowered or raised. While the highest processor voltage of 1.5625 volts will appear slightly limiting to the most enthusiastic overclockers, the HT clock limit of 500 MHz is well beyond the capabilities of the chipset or any AMD processor.
The highest HT clock we could reach was 253 MHz, even with HT multipliers as low as 5x, but the limit of CPU stability was a still-respectable 2934MHz at 1.45V.
The CPU Configuration menu takes up around two screens and offers all the standard overclocking adjustments experienced builders are most often familiar with.
Memory timings are found on the lower half of the CPU Configuration page, probably because the memory controller is on the CPU. The “Northbridge” voltage seen at the top of the page refers to the processor’s on-die memory controller, rather than the nForce 780a SLI.
The “Chipset” menu refers to the actual nForce 780a SLI chipset.
