Many Thanks go out to:
Patrick Hawley [phawley@envision.com]
Colin_Melville@mastercard.com
For their prompt replies...
Here is the original Post:
Are there any significant differences between a SPARC5 and SPARC20 running
SunOS 4.1.4.
We are running SPARC20's on SunOS 4.1.4 and are about to get SPARC 5's and
want to
know if there are any special gotcha's to look out for?
They are both sun4m architecture right?
====================================
Thanks for the Web Reference
Reponses
with regard to their hardware, and hardware capabilities:
[from http://www.sunhelp.com/faq/sunref1.html]
SPARCstation 5
Processor(s): microSPARC II @ 70MHz, 85MHz, 110MHz;
57.0/64.0/? SPECint92, 47.3/54.6/? SPECfp92,
1352/1518/? SPECintRate92, 1122/1295/?
SPECfpRate92
Bus: SBus
Memory: 256M physical
Architecture: sun4m
Notes: 16M standard in 70MHz model, 32M standard in
85MHz model. 8 SIMM slots, 8M or 32M SIMMs,
mixable except that any 32M SIMMs must be in
slots before any 8M SIMMs. Code name "Aurora".
Uses SCA connectors (see Misc Q&A #29) for
internal SCSI drives. Socketed CPU chip.
SPARCstation 20M
Processor(s): SuperSPARC @ 50MHz, 86.1 MIPS
Bus: SBus, MBus
Memory: 512M physical, 32K off-chip cache
Notes: 32M standard. 1.44M 3.5" floppy.
SPARCstation 20/xx
Processor(s): Mbus modules
Bus: SBus and Mbus; SBus for models 50 and 61 (and
possibly others?) @ 25MHz/64bits
Memory: 512M physical
Architecture: sun4m
Notes: 1.44M 3.5" floppy. 32M standard all models. Code
name "Kodiak". Uses SCA connectors (see Misc Q&A
#29) for internal SCSI drives. 16, 32, or 64M
60ns SIMMs. Some models (514, others?) use
double-width CPU modules that block SBus slots.
model MHz SPECint92 SPECfp92 SPECint SPECfp
----- --- --------- -------- -Rate92--Rate92-
20/50 50 69.2 78.3 1628 1842
20/502 50x2 2833 2995
20/51 50 73.6 84.8 1731 1995
20/514 50x4 6034 6752
20/61 60 88.9 102.8 2092 2418
20/612 60x2 3903 4645
20/71
20/712
Best of luck,
Patrick Hawley
Sys Admin
Envision
================================================
Jim,
In a nutshell, SPAR20's were built as servers, 5's were workstations. 20
has a faster bus, more cache. Since the CPU's on newer SPARC 5's are up to
170Mhz, I don't think you'll notice a great difference.
BTW, I think Tatung and others still make SPARC20 clones.
Cheers,
Colin
Technology Partners
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