Abit SM5, User Manual

Page: 78 / 96

Appendix B B-8
Y
Bus Factor
Power STD 3.15V~3.465V (Recommended voltage is 3.38V)
VR 3.300V~3.465V (Recommended voltage is 3.38V)
VRE 3.450V~3.6V (Recommended voltage is 3.52V)
Timing STD Standard Timing
MD
Min. Delay (denoting shorter minimum valid delay AC timing
for some signal)
Kit Supports timing for C55/C88 cache chipsets & design
P54C
1. Beginning with the P54C E-Step, standard timings have been replaced by existing
Min Delay timing
.
P54CS
1. P54CS PPGA UP:No DP,No APIC,No FRC
2. Beginning with the P54C E-Step, standard timings have been replaced by existing
Min Delay timing.
P55C
1. P55C A-Step is NOT production stepping
2. A-1 step:
Vcc and timing on initial samples is 2.9V +/- 0.1V
3. A-2 Step and B step: Vcc and timing on production stepping is 2.8V +/- 0.1V