Date: Thu, 17 Aug 2000 07:51:29 -0700 (PDT) From: Linh Pham <lplist@closedsrc.org> To: Joel Bjork <u98jobj@stud.hh.se> Cc: Massimo De Giorgi <madg66@libero.it>, freebsd-questions@FreeBSD.ORG Subject: RE: R: Max Memory question Message-ID: <Pine.BSF.4.21.0008170745540.89729-100000@q.closedsrc.org> In-Reply-To: <XFMail.000817140213.u98jobj@stud.hh.se>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 17 Aug 2000, Joel Bjork mumbled: > Yes, it's a pentium II or III with plenty of L2-cache, up to 2MB I think, > depending on how much you are willing to pay. The new 700Mhz Pentium III Xeon processors have up to 2MB of cache within the core package. Nice low latency cache...mmmm... but yes, you have to pay through the nose for each one. Also, there are Coppermine-based Xeon's that only have 256K of on-die L2 cache (in the same configuration as the Pentium III Coppermine xxx-EB processors), but no more. This allows Intel to ramp up processor speed over cache for graphics workstations. > I suspect they use a controlbit or something, I'm not taking any bets on it > but that's my guess. First... 32GB should have been 64GB (another off-by-one error), but according to Intel's specs on the Xeon, it can cache up to 64GB of memory because of the 36-bit memory addressing scheme. Realistically, it's the chipset that will define the maximum memory that the machine can support. Like the i840 (which supports up to two Pentium III or Pentium II/III Xeon processors) with 4 Rambus RIMMs can support up to 1GB of RDRAM. Higher-end chipsets can support anywhere from 4GB of RAM up to 16GB of RAM. // Linh Pham // http://closedsrc.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.21.0008170745540.89729-100000>