Subject: Re: Any experince with this alpha?
To: Chris G Demetriou <Chris_G_Demetriou@ux2.sp.cs.cmu.edu>
From: John C. Hayward <John.C.Hayward@wheaton.edu>
List: port-alpha
Date: 08/26/1996 15:33:38
First - Thanks to all the work Chris has done on the Alpha port (and 
previously when he was part of core)

On Mon, 26 Aug 1996, Chris G Demetriou wrote:

...
> I ordered a couple of those machines, and also got 2 16MB simms for
Are the sims the same kind (72 pin with/wo parity) which are readily 
available for the PC market?

> > I can get this system (without monitor) for $800 which seems like a good
> > bang for the buck.  
> 
> probably without monitor or keyboard, actually.  8-)
The keyboard LK411 (108 Key, Digital layout) Keyboard
is included in this price.

> It's an OK deal, i'd say.  They're not incredibly speedy machines.
> I'd guess that an intel box would beat them in terms of
> price/performance, but i can't say for sure.

The 166MZ Pentium Pro chip is about $600 on the net.
The 166MZ Pentium chip is about $800.  (I think Intel is trying to get
people on to the Pentium Pro).

However I checked out what benchmarks on the Intel processors are
(http://www.tdl.com/~netex/cpu/cpu.html)
======================================
Pentium(R) Pro Processor Benchmarks

            Corrected    Corrected
            SPECint92* SPECint_base92*
150MHz        245.0        229.1
166MHz        293.1        274.7
180MHz        288.6        269.5
200MHz        320.2        298.2

Results measured on Intel Alder systems. 

Pentium(R) Processor Systems

            Corrected      Corrected
            SPECint92*   SPECint_base92*
100MHz        137.7          126.2
120MHz        157.3          143.6
133MHz        174.2          160.5
150MHz        181.4          165.2
166MHz        197.5          181.6
=============================================================
While Dec-Alphas 21066A micro processor:
(http://www.digital.com/info/semiconductor/dsc-21066a.html)
++++++++++++++++++++++++++++++++++++++++++++++++++++++
Best-in-class performance 
              233-MHz, 166-MHz, and 100-MHz operation 
              Superscalar (dual issue) 
              Peak instruction execution rate of 466 MIPS (233 MHz) 
              High-performance benchmarks
              97 SPECint92 (estimated) (233)
              112 SPECfp92 (estimated) (233)
              189.5 V2.1 Dhrystone MIPS (233)
              89.8 V2.1 Dhrystone MIPS (100)
++++++++++++++++++++++++++++++++++++++++++++++++++++++

Is it possible that the 166MHZ Alpha perform at 69 SPECint92 (97 * 166/233)
while the 100MHZ regular Pentium performs at 138 SPECint92 (_Twice_ the 
speed?)

johnh...