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UTICAJ OVERCLOCKINGA NA STABILNOST I PERFORMANSE RACUNARA,
>>4 GHZ PROJECT<<

Autor: Aleksandar Vukadinović, I razred, Prva Beogradska gimnazija
Mentor: Mateja Opaĉić dipl. maš. Asistent Fakultet Informacionih Tehnologija (FIT)

REZIME
CPU (Central Procesing Unit) je jedan od osnovnih delova svakog racunara. Na brzinu
procesora direktno utice frekvencija procesorskog clocka ciju ucestalost izrazavamo u GHz.
Ona ne predstavlja direktnu meru procesorske snage zbog razlika u arkitekturi, medjutim
svakako igra presudnu ulogu. Clock se generise pomocu magistrale na ploci, FSB-a (Front
Side Bus) i mnozioca (multypler). Overclocking je process pri kome se brzina procesora
podize iznad nominalne, fabricki podesene. Overclocking moze predstavljati ozbiljan rizik,
zbog brojnih problema koji mogu nastati, medjutim dobitak u performansama moze biti
izuzetno velik. Cilj ovog rada je da pokaze kolko overclocking zaista moze povecati
performanse sistema i da pronadje krajnje granice Intel Pentium D 915 procesora.

Prilikom ovog experimenta, korisceno je dobro vazduzno hladjenje, koje je kasnije i
modovano. Nakon overclockovanja, odradjeni su brojni benchmark i stability testovi, i
rezultati su uporedjeni sa rezultatima istog procesora pri default vrednostima. Dobijeni
rezultati su zaista sjajni, i postignut je stabilan clock od 4.2 GHz sto predstavlja cak 50% vise
od fabricke vrednosti. Skok u performansama kako u radu, tako i u sintetickim testovima je
ocigledan.

Kljuĉne reĉi: CPU, Intel, Netburst, Overclocking, FSB, Pentium D , D915

SUMMARY
CPU (Central Procesing Unit) is a basic part of every computer. CPU frequency is measured
in GHz. It doesn’t actually represent the actual measure of processor performance, but it is
very significant for sure. Frequency-Clock is generated with FSB-Front Side Bus and
Multypler. Overclocking is a process of rising CPU frequency above default, set by
manufacturer. Overclocking can be considerd as a risk, due to numerous issues that can be
caused, but if its done correctly, performance jump is great. The point of this work is to show
how much can OC-ing really affect performance, and to find the final limit of Intel Pentium D
915. During the experiment, a good air-cooling has been used, and in the end, its evin
modded. After the OC-ing, numerous benchmark tests have been done, and results were
compared to the ones before OC-ing. The gained results are really outstanding, and the
difference is huge. Last stable clock is reached at 4.2GHz, and that is 50% more than default
value of 2.8GHz. Performance jump is evident.

Keywords: CPU, Intel, Netburst, Overclocking, FSB, Pentium D , D915