Abit NF8 - Page 5

Written by John Chen    Sunday, 27 February 2005 11:00
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Abit continues the use of their nicely organized SoftMenu system for overclocking.  The section includes all the necessities to achieve good overclocking results. 

  • VCore:  1.5v-1.8v
  • VDIMM:  2.5v-2.8v
  • DDR Ref Voltage:  1.24v-1.33v
  • VAGP:  1.5v-1.65v
  • Chipset Voltage:  1.6v-1.72v
  • LDT Multipliers:  1x-5x, AUTO
  • Memory Dividers:  AUTO, 100, 133, 166, 200
  • CPU Multipliers:  4x-highest your CPU allows
  • AGP Ratio:  66MHZ-100MHZ

The BIOS seems well put but does lack a little in the VDIMM department.  While the popular TCCD chips usually only need a maximum of 2.8v, users with old BH5, UTT, or even OCZ EB memory will want more than that.  If Abit's not going to supply another DIMM slot for use with the DDR Booster, they should definitely include up to at least 3.2v for VDIMM.  All the other voltages seem to be pretty fair.  The DDR reference voltage is not something I'm very familiar with.  I've never seen that come up in a motherboard before, and I've played with plenty.  If it's the VTT tracking that I presume to be, then you'll want to set it to approximately half of VDIMM.  One thing though, I got better results with leaving DDR Ref Voltage to 1.24v.  Upping it seemed to cause more instability for me.

The Phoenix Award BIOS is very simple to navigate and understand.  There were no special options for memory latency adjustments other than the usual CAS, TRCD, TRP, and TRAS.  The NF8 does allow a mighty impressive 450HTT, but then again, no one is really going to hit that high.  One strange thing I encountered was that if I installed my Clawhammer CPU, the Command Rate option disappears.  It would only appear if I installed a Newcastle or Sempron processor.  With the Clawhammer, command rate of 1T is automatically defaulted.  Notice in the last BIOS shot that the CPU temperature reads 77°C.  It just goes to show that you certainly can't believe the temps you see in the BIOS.