[RC5] Performance on P-IV

R J Booysen rjb-dis at iafrica.com
Thu May 10 16:40:20 EDT 2001


A Pentium 4 Core is apparently being developed and we can do nothing but wait for it to be finished and included in the core set.

It is really bad because dnetc said that the core was being developed ages ago.  I can't believe that it has taken this long

R.Booysen
Team - Cow Killers
  ----- Original Message ----- 
  From: Ferry van Steen 
  To: rc5 at lists.distributed.net 
  Sent: Thursday, May 10, 2001 11:31 AM
  Subject: [RC5] Performance on P-IV


  Hey I've got some sad sad sad statistics. I hope there is an explanation for this because else I have to advise everybody NOT to buy Pentium-IV's because this is sad.....

  Ok.. the distributed net does NOT recognize P-IV's yet so it does a micro bench and selects Core #2 RG Class 6 which is the same core running on P-II's. Knowing this you would suspect a performance increase on a P-IV 1400 compared to P-II 400 of 1400/400 = 3.5 which would mean 350% performance increase in MHz so the pure calculative power should increase 350% also... Ding WRONG.

  My P-II 400 on Core #2 RG Class 6 Win2K with some services runs 1,128,585,13 according to dnetc -benchmark rc5
  The P-IV 1400 (1.4GHz) running -benchmark rc5 Core #2 RG  Class 6 only makes a LOUSY 1,824,190,86 on a freshly installed WinME without any services.

  This is only a lousy 161.64% (182419086/112858513*100) increase over a 350% increase of MHz's

  To give another example
  (This runs on linux btw, and the tests I've done the rc5 clients run faster on linux in any case (using the exact same hardware RC5 goes faster under linux than under win)
  My AMD Athlon 1000 (1 GHz) scores a friggin' absolutely awesome 3,538,971.00 Hahaha a 1GHz Athlon is almost TWICE as fast as a stinking P-IV 1400 which has 400MHz more under ít's belt. This is scary shit... Hehe Guess I shouldn't buy intel... Atleast not until everything is optimized because this is really sad.

  Hope somebody can explain this....

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