![[H]ardOCP](/images/blank.gif){kind=small}
- Date:
- Tuesday , March 08, 2005
- Author:
- Morry Teitelman
- Editor:
- Kyle Bennett
- Google +1
DFI NF4 Ultra-D
The DFI NF4 Ultra-D is a nForce 4 Ultra chipset-based motherboard that started as an inexpensive SLI solution, but that was quickly reigned in by NVIDIA. Now it stands as a dual PCI-Express X16 motherboard that some modders are finding out is still good for SLI.
BIOS (continued)
The topmost line item listed within the Genie BIOS Setting menu is the DRAM Configuration submenu, which contains all memory related configuration settings.
The memory bus speed is determined through the DRAM Frequency Set (MHz) option. This option configures the memory speed through the uses of ratios, with the ratio listed as memory bus speed/CPU FSB. The settings themselves list out both the memory bus speed based on a default CPU FSB of 200MHz, and the ratio associated to the setting. The ratios available for selection go from a 1:2 ratio to a synchronous 1:1 ratio, allowing for enormous latitude in setting the memory bus speed when using ultra high CPU FSB settings.
Similar to many of the other nForce4-based solutions, the nF4 Ultra-D has an overwhelming selection of configurable memory timing options. Configurable timing options include: CAS latency; RAS to CAS delay; active to precharge delay (shown as Min RAS# active time(Tras); RAS precharge delay (shown as Row precharge Time); row cycle time; row refresh cycle time; row to row delay; write recovery time; write to read delay; read to write delay; refresh period; write CAS latency; DQS skew control; DQS skew value; DRAM drive strength; DRAM data drive strength; asynchronous latency; read preamble; idle cycle limit; read/write queue bypass; maximum bypass count (shown as Bypass Max); and 32 byte granularity.. Note that on most memory timings listed, the numerically lower setting forces more aggressive memory operation. For the drive strength and data drive strength options, the numerically higher values are the more aggressive settings. Note that for command rate (shown as Command Per Clock (CPC)), bank interleave, and dynamic counter settings, you have the option of enabled or disabled only.