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ABIT KV8-MAX3 i AOpen AK86-L Athlon 64 ploče
29.12.2003.
    « Prev  : Stranica 2 od 12 :  Next »      By ::  Ozren Žagmešter 
- AOpen AK86-L 2/2 -

BIOS na AOpen AK86-L ploči nudi sve potrebno prosječnom korisniku (uz neke dodatke kao što je kontrola brzine vrtnje ventilatora uz pomoć AOpenovog softvera). BIOS nudi i sve opcije za overclocking i tweaking no nažalost izbor voltaža je vrlo skroman i konzervativan. Tako je vcore moguće podići samo do 1.55V (default za Athlon 64 procesore je 1.5V), vagp do 1.6V (dostupne voltaže su 1.5, 1.53, 1.56i 1.6V), a vddr do 2.7V (dostupne voltaže su 2.5, 2.55, 2.6, 2.65 i 2.7V). Što se tiče tweakinga, memoriju možete podesiti kako hoćete (CAS, RAS, itd.). Uglavnom, jasno je da AOpen nije napravio ploču namijenjenu overclockerima. Taj dio nas ne smeta previše jer sretniji smo kada netko napravi takvu ploču nego kada se u BIOS strpa sve živo i mrtvo za overclocking, s zavidnim izborom voltaža, a stvari ne rade kako treba. Zanimljivo je to što BIOS ploče može itekako zavarati neiskusne korisnike jer prijavljuje neke stvari koje ne stoje. Tako bi se po BIOS-u dalo zaključiti da memorijski kontroler na Athlonu 64 ima neograničen broj djeljitelja za rad s memorijom. Ukoliko na primjer stavite da je takt memorije 400MHz (dakle default sinhronu brzinu) i podignete FSB na npr. 210MHz, BIOS će vam tvrditi da memorija i dalje radi na 400MHz, iako je realno njezin takt sada 420MHz. Isto tako BIOS "vara" i za taktove AGP i PCI sabirnica - neovisno o tome na koliko vi digli FSB, on će tvrditi da AGP radi na 66, a PCI na 33MHz-a. S obzirom da VIA K8T800 chipset ne posjeduje AGP/PCI lock (kao npr. nForce3 ili i875P chipseti) jasno je da riječ o netočnom podatku. Ovakvo "varanje" nije opasno, ali lako može zbuniti neiskusnog korisnika i odvesti ga na krive zaključke.

Što se problema s pločom tiče, nije da ih nije bilo iako se ploča pokazala vrlo stabilnom u radu (tj. kada radi, radi dobro). Mali nedostatak je to što ploča s Corsair XMS3500C2 na 400MHz-a nije htjela raditi s postavkama 2-2-2-5 već 2-3-2-5. Puno veći nedostatak jest problematično ponašanje ploče kada se u nju dodaju neke PCI kartice. Tako AOpen AK86-L nije htjela uopće POST-ati ukoliko bismo u nju "upiknuli" našu standardnu CL Audigy Player! audio karticu. Za one koji su pročitali prvi dio round-upa Athlon 64 ploča vjerovatno će se sjetiti MSI ploče i identičnog problema. Ipak nije sve isto - kao prvo, kod AOpen ploče sve ostale PCI kartice radile su kako treba, a kao drugo stvar nismo uspjeli popraviti uključivanjem svih integriranih kontrolera. Problem smo riješili prilično bizarno - u ploču smo "upiknuli" još jednu PCI karticu! Kada Audigy više nije bio sam (u stroj smo nakon "otkrića" stavili još 3Com LAN karticu) sve je radilo kako treba. Kontaktirali smo AOpen i rekli im o problemu. Vrlo brzo nam se javio njihov technical support i objasnio nam u čemu je problem, tj. da je ploča samo djelomično kriva. Naime, Creative je, po svom dobrom starom običaju, opet spetljao stvar. Audigy se vrlo čudno ponaša prilikom inicijalizacije tj. reseta PCI sabirnice, tj. kada se stroj upali, ona "povuče" 5V (umjesto 3.3V). Kako je PCI povezan s CPU-om putem South Bridgea, Audigy uspije srušiti cijelu ploču. Iz nekog razloga, postojanje neke druge PCI kartice normalizira stvar i sve radi kako treba. Problem se može samo riješiti promjenom jednog kondenzatora, dakle nije BIOS prirode. Sve ostale kartice koje smo probali, uključujući i CL Audigy 2 ZS rade kako treba. Naša ocjena jest da se problem 60% može pripisati Creativu, a 40% AOpenu - jer na većini ploča Audigy Player! radi kako treba.

Zanimljiv smještaj North Bridge chipa

Za razliku od EPoX Socket 754 ploče, AOpen AK86-L ploča nije stvarala probleme po pitanju grafičkih kartica. Da bi se pak osigurao od starih grafičkih kartica, AOpen je stavio i AGP warning LED-icu. Treba pohvaliti i integraciju Realtek ALC655 AC'97 zvuka koja je napravljena kako treba tako da se ne trebate bojati pucketanja i sličnih pojava, tako čestih s integriranim zvukom. Ipak, uvijek je bolje rješenje posebna audio kartica. Što se tiče performansi, da dobijete neki osjećaj, Realtek ALC655 će vas naspram CL Audigy-a koštati oko 5 fps-a u QIII Areni neovisno o rezoluciji. Što se tiče kvalitete zvuka, ALC655 nema što tražiti u usporedbi s Audigy ili Envy24 karticama.

Jug ploče

AOpen ploče su inače poznate po dobroj opremljenosti. AOpen AK86-L je tu nažalost iznimka. Osim stvari standardnih za VIA VT8237 South Bridge (USB2.0, SATA RAID, IDE) tu je osim integriranog zvuka još samo Gigabitni LAN. Upravo je Gigabitni LAN jedina razlika spram AK86-N modela koji dolazi s 10/100 LAN karticom. Na stvari poput DualBIOS-a i sl. možete zaboraviti.

Back to basics

Bundle također nije jača strana AK86-L ploče - tu je samo ono bez čega se ne može - kablovi, uputstva, back panel, driver/utility CD i Norton AntiVirus. I to je to!



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