Many Thanks go out to:
Patrick Hawley [email@example.com]
For their prompt replies...
Here is the original Post:
Are there any significant differences between a SPARC5 and SPARC20 running
We are running SPARC20's on SunOS 4.1.4 and are about to get SPARC 5's and
know if there are any special gotcha's to look out for?
They are both sun4m architecture right?
Thanks for the Web Reference
with regard to their hardware, and hardware capabilities:
Processor(s): microSPARC II @ 70MHz, 85MHz, 110MHz;
57.0/64.0/? SPECint92, 47.3/54.6/? SPECfp92,
1352/1518/? SPECintRate92, 1122/1295/?
Memory: 256M physical
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.
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.
Processor(s): Mbus modules
Bus: SBus and Mbus; SBus for models 50 and 61 (and
possibly others?) @ 25MHz/64bits
Memory: 512M physical
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
Best of luck,
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.
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:12:36 CDT