[SunRescue] SS20 (??) is it really?
lockwood at ISI.EDU
Fri Jul 30 14:00:38 CDT 1999
On Fri, 30 Jul 1999, Chris Conn wrote:
> Here is what I get:
> MBus : 50 MHz
> SBus : 25 MHz
> CPU#0 : 60 MHz SuperSPARC / SuperCache
Definately an SM61 (60MHz internal CPU clock, 1MB e-cache). Here's how
you stack up against your SS4:
System CPU ClkMHz Cache SPECint SPECfp
Name (NUMx)Type ext/in Ext+I/D 92 92
================= ========== ======= ========== ======= =======
Sun SS20/61 SuprSP 50/60 1M+20/16 98.2 107.2
Sun SS4/110 MicroSP2 110 16/8 78.6 65.3
Roughly 25% better for integer work and 65% better for FP. It will be a
> Also, how fast is the /dev/cua/a port on the SS20? Can I run it at
> 115200? (one of the reasons I am getting rid of my SS4 is the 38400 max
> on the serialA...the other being 8bit color).
Both the SS4 and SS20 use the same serial port controller (zs-based ASIC).
They can run at 38400 well and will work at 76800 but are a bit touchy
(and few devices support that speed). You will not be able to go to
115200 without an add-on serial port card.
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