MC68060 vs. MC68SZ328

[Tomáš Vondra]

>>   MC68060 cca 17.000 Kc
>>    MC68SZ328 cca  400 Kc
>>
>>   ponekud vyrazila dech. Muzete mi nekdo vysvetlil proc ten procesor
>>    stoji tolik?

SI> Jedna z moznosti - druhy procesor dokazi nakoupit v kusovce, takze
SI> si prihodi svych x% a poslou to dal, prvni mohou koupit jenom po
SI> 50ks, na celkovou cenu opet prihodi svych x% a jeden z nich Vam
SI> prodaji.

SI> J. Hanzal

Nerozumim - chapu ze pri koupi jednoho kusu je cena vyssi nez kdyz
jich koupim "baleni" (treba tech 50 ks), ale i tak se mi tech 17.000
zda moc.

Nakonec jsem koukal na stranky freescale.com kde nejake ceny jsou,
a i tam jsou ty cenove rozdily takhle markantni. Samozrejme tam
uvadeji ceny pri odberu 1000 ks, nicmene za MC68060 chteji cca 340
usd zatimco za MC68SZ328 zhruba 10 usd.

Ale at hledam jak hledam tak porad nechapu v cem je ten drazsi
procesor o tolik lepsi. Jasne - ma 10x vykon, MMU, FPU, 32-bit
sbernici, L1 cache a nejake dalsi ficury, ale za 40x vyssi cenu?

Jenom pro uplnost shrnuti zakladnich vlastnosti (ze stranek
freescale.com):

MC68060 Features

    * Completely User-Code Compatible with the MC68040
    * Superscalar Implementation of M68000 Architecture
    * Branch Cache Reduces Branches to Zero Cycles
    * Executes Three Instructions per Clock
    * Dual 8K On-Chip Caches
    * Bus Snooping
    * Independent Instruction and Data Paged MMUs (MC68060 and MC68LC060 Only)
    * Full 32-Bit Nonmultiplexed Address an Data Bus
    * Power Management
    * IEEE-Compatible On-Chip FPU (MC68060 Only)
    * Available in 50 and 60 MHz Speeds (MC68060)
    * Available in 50, 66 and 75 MHz Speeds (MC68LC060 and MC68EC060)

    http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MC68060&nodeId=018rH3YTLC4622

MC68SZ328 Features:

    * Fourth generation of industry-standard DragonBall family for the
      personal, portable product market
    * High level of system-function integration
    * Low-power design combined with increased system performance
    * Wide variety of applications including the most popular PDA
      designs, smart phones, and nextgeneration wireless communicato

    http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MC68SZ328&nodeId=018rH32973vL2v

T.V.