Author: David Blackman
Date: 01:01:38 09/23/99
Go up one level in this thread
On September 23, 1999 at 00:42:28, Eelco de Groot wrote: >For years second level cache runs at 66 Mhz and recently this was >increased to 100 Mhz. > >The AMD-K6-III is a breakthrough because the second level cache runs >at full processor speed. If you have (say) a 450 Mhz K6-III the >second level cache will run at 450 Mhz too instead of the old 100 Mhz. > >Ed Schroder This second level cache at full processor speed is made up by the marketing departments. The L2 on AMD K6-III and Intel Celeron are actually a bit quicker than most of the off-chip caches, but nowhere near true CPU clock speed. Celeron is usually about 11 clock cycles to L2 cache. K6-III is unpredictable. About 11 clock cycles is the fastest i saw in testing, but sometimes it was much slower for no obvious reason. The 100MHz or 66MHz off chip caches are also a bit misleading. You might think this means an access time of 10ns or 15ns, but most chip sets will actually be 50ns to 100ns.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.