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Celeron 800/100
09.02.2001.
    « Prev  : Stranica 1 od 6 :  Next »      By ::  Josip Antonić 
- Prošlost -

Uvod

Stari dobri Celeron je napokon doživio promjenu koju smo se svi dugo čekali: povećanje FSB-a na 100 MHz. Celeron 800/100 stigao nam je iz Intela preko tvrtke Sfera-kon.

Toliko željena brzina sabirnice dolazi zapakirana u klasičnom FC-PGA podnožju s čipom izrađenim u 0,18 mikronskoj tehnologiji. Zajedno s procesorom, u paketu dolazi i Intelov cooler. Nisu to više ona plastična čuda s perom od ventilatora nego je to klasični aluminijski cooler sa Panaflo 50mm ventilatorom koji osigurava dovoljno hlađenja procesora na tvorničkim specifikacijama. Za nešto više trebat će vam jači cooler (mi smo koristili Alphu PEP66U).

Prošlost

Celeron je prvi put predstavljen 1998. godine bez ugrađenog L2 keša (Covington jezgra) na tada novom Slot1 podnožju. Na tim modelima množitelj nije bio blokiran tako da su postizane velike brzine koje nisu pokazivale veliki dobitak u performansama. Naime, procesor se sastojao samo od jezgre bez L2 keša. Time je brza jezgra bila ograničena na upotrebu spore sistemske memorije koja je radila na 66 MHz. Overclockingom postizane su brzine do 400 MHz, dok su tvorničke brzine bile od 266-333 MHz.

Slot 1 Celeron 300

Nedostatak L2 keša je bio poguban pa je Intel brzo dodao 128KB L2 keš (Mendocino jezgra) što je značajno popravilo performanse. Keš je stavljen na istu silikonsku pločicu s jezgrom te je radio na punoj brzini procesora za razliku od tadašnjih P2 procesora koji su imali izdvojenu keš memoriju na koja je radila na pola brzine takta procesora. Nova verzija izašla je na tržište 1999., u početku kao Slot1 izvedba koja je polako zamjenjivana s PPGA verzijom za Socket370. Novi Celeroni su ubrzavani do samih granica izdržljivosti (voltaža jezgre povećavana je s tvorničkih 2,0V na 2,4-2,5V), ali limit je bio negdje oko 550-600 MHz. Iznad toga je rijetko koji išao, a prvenstveno su to bile verzije na 366 MHz koje su dostizale i 620MHz. Maksimum brzine je bio ograničen tehnološkim procesom od 0,25 mikrona. Čak se i tadašnji PII nisu proizvodili s brzinama većim od 450 MHz. Tvorničke brzine tih Celerona bile su od 300-533 Mhz.

Celeron 433 PPGA



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