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Bus Speed

By NV30
Sep 24, 2002
  1. Just how can you find out what your bus speed is?
     
  2. Vassal24352

    Vassal24352 TS Rookie Posts: 31

    what type of cpu do you have?
     
  3. Vassal24352

    Vassal24352 TS Rookie Posts: 31

    you can go into the bios and see how fast your bus speed is
     
  4. NV30

    NV30 TS Rookie Topic Starter Posts: 275

    Using a P4 1.7 GHz CPU on an Intel D845HV mobo.
     
  5. Vassal24352

    Vassal24352 TS Rookie Posts: 31

    then the bus for your cpu is 400mhz
     
  6. NV30

    NV30 TS Rookie Topic Starter Posts: 275

    OK Thanks. My 3DMark compare page though shows 100Mhz. Is this an error?
     
  7. Vassal24352

    Vassal24352 TS Rookie Posts: 31

    hmmm it could be 1 of 2 things,#1 it is an error in the program and it detects it as 100mhz or #2 the bus setting in your bios is at a lower setting
     
  8. GeForce

    GeForce TS Rookie Posts: 41

    Hmm I dunno exactly if 3DMark or the BIOS reports an actual 400mhz bus (never used a P4), but doesn't the P4 execute 4 instructions per clock cycle, which is effectively originally a 100mhz bus?
     
  9. Vassal24352

    Vassal24352 TS Rookie Posts: 31

    very true Geforce that slipped my mind:eek:
     
  10. Th3M1ghtyD8

    Th3M1ghtyD8 TechSpot Paladin Posts: 664

    The (Original) Pentium 4 Uses a 100Mhz Bus, Quad pumped (aka 4 accesses per cycle) i.e. giving an effective 400Mhz Bus.

    The New 133Mhz Based Pentium 4 has an effective bus speed of 533Mhz (4x133)

    AMD Athlons (T-Bird Core) and Durons use a DDR (Double Data Rate) 100Mhz Bus. i.e 200Mhz

    New Athlons i.e. XP use a 133 DDR Bus i.e. 266Mhz

    Future Athlons may use a 166Mhz DDR Bus i.e. 333Mhz
     
  11. NV30

    NV30 TS Rookie Topic Starter Posts: 275

    Ok, thanks for clarifiying. :)
     
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