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Pretvorba FX5900 kartice u FX5950 Ultra karticu
20.01.2004.
    « Prev  : Stranica 1 od 4 :  Next »      By ::  Ozren Žagmešter 
- Uvod i procedura 1/2 -

Grafičke kartice i pripadajući driveri zanimljiva su vrsta jer malo pa malo na vidjelo izađe neki način da se neka jeftinija kartica pretvori u skuplji model. Oni koji malo prate takve stvari odmah će se sjetiti kako su se 256-bitne Radeon 9500 128MB kartice lijepo mogle pretvoriti u puno skuplji Radeon 9700/9700Pro. Sada je pak došlo vrijeme da se malo okoriste vlasnici NVIDIA FX5900 kartica - jednostavnom promjenom BIOS-a moguće je kartice iz FX5900 serije pretvoriti u FX5950 Ultre. Mi smo tako odlučili podijeliti naša iskustva s ovim BIOS-modom te napisati vodič za one kojima engleski jezik nije jača strana (uputstva kako flashati FX5900 u FX5950 moguće je naći na više stranih foruma). Ovo nam nije bio problem jer smo na raspologanju imali sve potrebno, nešto što nažalost ne možemo reći da se radi o ATi karticama koje nikako da dobijemo na stalni test.

Kao prvo, treba vam (gle čuda!) neka FX5900 kartica. Mi smo stvar isprobali na dvije kartice - Gainward FX5900 128MB i referentna nVIDIAFX5900 Ultra poslužile su kao pokusni kunić. Od ove dvije kartice, Gainwardica je i prije novog BIOS-a mogla dostići takt FX5950 Ultra kartica - 475/950MHz, dok je to referentnoj FX5900 Ultra kartici to polazilo za rukom jedino s vodenim hlađenjem, inače bi maksimum bio 472/936MHz. No, FX5950 Ultra BIOS diže voltažu na kojima radi kartica s 1.4 na 1.6V, dakle radi upravo ono što treba za bolji overclocking. Ipak, treba napomenuti da viša voltaža donosi i veću toplinu, tako da se može desiti da vam se stvar na kraju i ne isplati ukoliko ste vlasnik FX5900 kartice čije je hlađenje jako loše. Naravno, uvijek se može desiti da vam veća voltaža ne pomogne zbog toga jer ste baš dobili neki loš chip na vašoj grafičkoj kartici. Drugim riječima ovakva modifikacija ne jamči uspjeh no s obzirom da je su nama rezultati bili pozitivni na obje kartice, šanse da ćete profitirati su vrlo velike.

 

Procedura

Za flashanje smo i na jednoj i na drugoj kartici koristili Leadtekov Winfast Flash program koji dolazi zajedno s FX5950 Ultra BIOS-om verzije 4.35.20.32.00. Možete ga skinuti i s naših stranica - klik ovdje. Izabrali smo Leadtekov program zato što sam radi back-up postojećeg BIOS-a i zato što se ne buni zbog različitih Vendor-ID-a kartice i BIOS-a, kao što je slučaj s NVFlash programom kojeg možete skinuti ovdje. Dodatni razlog zbog kojeg smo se odlućili na Leadtekov program bio je i taj što smo i jednu i drugu karticu odlučili flashati s BIOS-om koji je originalno namijenjen Leadtek FX5950 Ultra kartici (model A380 Ultra), iako smo za Gainwardicu mogli upotrijebiti i neki Gainward BIOS. Ovo smo napravili zato da umirimo i one koji bi željeli napraviti BIOS-mod a ne mogu naći FX5950 Ultra BIOS koji pripada tvrtci čija je i sama kartica.

Prvo što smo napravili jest bootable disketu na koju smo unzipali "A380U-BIOS.zip" datoteku. Računalo će sve datoteke iz "A380U-BIOS.zip" fajle staviti u "a380u bios" folder. Mi smo ih sve prebacili u root direktorij da nam bude lakše i nakon toga preimenovali sam BIOS fajl iz "A380U_2978.rom" u "A380U.rom" da nas ne zeza DOS i njegovo ograničenje na dužinu datoteke od samo 8 karaktera.

Nakon toga smo na istu disketu unzipali sastojke "nvflash446.zip" datoteke. Nakon toga smo rebootali stroj te napisali:

nvflash -b original.rom

i na taj način napravili back-up originalnog BIOS-a grafičke kartice. Ovo samo napravili zato da se možemo osigurati, tj. složiti "autoexec.bat" datoteku kojom ćemo moći automatski flashati stari BIOS ukoliko grafička kartica više neće davati sliku. Tako smo onda napravili još jednu boot disketu koja je imala sve kao i prva, s dodatkom "autoexec.bat" datoteke u kojoj je bila linija "wfflash.exe nm original.rom". Neki puta ni ovakva zaštita neće pomoći i onda jedini način u stroj staviti još jednu PCI grafičku karticu i onda AGP kartici vratite originalni BIOS.



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