Date: Fri, 9 Jun 95 11:27:38 EDT From: L Jonas Olsson <ljo@pris.EEAP.CWRU.Edu> To: hardware@FreeBSD.org Cc: ljo@po.CWRU.Edu Subject: Fast Pentium boards? (SMP) Message-ID: <9506091527.AA15615@pris.EEAP.CWRU.Edu>
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I'm looking for fast SMP Pentium boards. In general there isn't
much really interesting right now. This might change with the new
Genie chip set from Acer. It supports individual 2nd level cache for
each Pentium/K5/M1. Acer doesn't think that there will be any systems
out with it until October though and no motherboards for a few months
after that. But at that time there might also be P6's or some new
chipset from Intel.
I found this one that seems interesting though. Any guesses how this
boards cache speed compares to that of Triton with pipelined cache? Or
what is the difference between pipelined and synch aka burst cache?
Manufacturer: Tyan Computers
Model: S1462 aka Tempest
Type: Dual Pentium 75/90/100/120
Chipset: Neptune
Cache: 256/512 kB option
Standard or Burst SRAM options
Cache hit cycle:
Burst (Synchronous) Reads: 3-1-1-1
Writes: 3-1-1-1
Standard(Asynchrounous) Reads: 3-2-2-2
Writes: 4-2-2-2
Main Memory: Eight 72 pin SIMM sockets
BIOS: AMI or Award
Expansion slots: Four PCI, Four EISA, one shared PCI/EISA
Supposedly runs: DOS, Windows, Windows NT, OS/2 (Warp), NetWare(3.1)
and SCO UNIX.
Tested with: Adaptec 2940, 2940W, 2930P, 3985, 3940, 2742.
Buslogic 946C, 956C, 956CD, 747
Tyan S1365 (PCI, NCR825; fast and wide)
...
The sheet with all the benchmarks shows (among many):
Win-Tune 2.0 under Windows NT (2.0) RAM (MB/s)
512 kB Burst: 21.0
256 kB Burst: 18.0
256 kB Async: 15.0
I have a quote for this MB with 64MB RAM, 256 kB burst cache
(supposedly 9ns synch), two P120's, Large tower with 2 fans and 300W
PS, Adaptec 2940, Conner 1GB, 3.5" floppy, Trident 512kB VGA, NMB 101
kB, 1 yr. on-site service for $5575 (Cornell computers). (I would
upgrade the trident...)
For other fast SMP Pentiums right now it seems that you have to buy
complete systems from ALR, Tricord, or Compaq. At least Tricord sells
up to quad Pentiums with 1MB 2nd level cache for each Pentium. Compaq
also have a third level cache shared by all Pentiums...
Jonas
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