clocking my DDR Ram...

Comments

• Vertigo1 Official Fuzzy Dice of FirstOnes.com

  January 2004

  Ok, what you need to do is look up the timing for your RAM. Then apply the settings accordingly.
• Biggles <font color=#AAFFAA>The Man Without a Face</font>

  January 2004

  Your RAM is actually slower than your FSB. Your RAM is 266, or 133 when you take into account the fact that it's DDR. Your FSB is 166, which is equivalent to 333. So your RAM is actually 66 effective MHz below your FSB.
  
  I could be wrong, though. DDR does weird stuff with clock speeds since the marketers arn't consistent.
• E.T Quote-o-matic

  January 2004

  [QUOTE][i]Originally posted by Biggles [/i]
  [B]I could be wrong, though. [/B][/QUOTE]
  Partly right, mainly wrong.
  
  
  
  When FSB:RAM ratio is one, speed of memory bus is same as processor FSB. (In this case 166MHz)
  When talking about Double Data Rate memory it means "effective" clock speed of 333MHz.
  (because DDR transfers data on both edges of clock pulse)
  
  So it seems that your DDR266 memories are in fact working overclocked if that's right what you told, A2597. (and PC works with those settings)
  
  [EDIT]And that memory bus speed what BIOS shows is real clock speed, not that "effective" one.
• A2597 Fanboy

  January 2004

  ok, when the PC loads it says memory is 333mhz...which is pretty hard to believe.
  
  inside windows, using cpuz, is clocks the memory at 166mhz
  
  so is it 333 (high) or 166(low) ?!?
• Sanfam I like clocks.

  January 2004

  no, that's right. Read what was said above. That's the system bus speed. The memory is operating, care of DDR mode, at 333, which is two times 166.
• Bekenn Sinclair's Duck

  January 2004

  In other words, it's running above its spec by a considerable amount, which may be fine, evidenced by the fact that you can still use your computer, or may be bad, as the RAM might have a significantly shorter lifespan this way.
• E.T Quote-o-matic

  January 2004

  [QUOTE][i]Originally posted by Bekenn [/i]
  [B]In other words, it's running above its spec by a considerable amount, which may be fine, evidenced by the fact that you can still use your computer, or may be bad, as the RAM might have a significantly shorter lifespan this way. [/B][/QUOTE]
  Use this program to test memory's stability:
  [url]http://www.memtest86.com/[/url]
  
  Download it, burn boot CD-ROM and run it few hours, if program doesn't show any errors, memorys are stable at that speed.
  
  
  Actually it isn't clock speed that's dangerous, it's the heat.
  When running on higher clock speeds memorys (also applies processor) produce more heat. That's why overclocking requires good ventilation.