ATI Radeon HD 4850: Kaperekedwe, mbali ndi ndemanga

Woyenera zina zithunzi accelerator GeForce 8800GTS ndi GeGorce 9800GTX ku NVIDIA ku lodziwika bwino Canada sewerolo mu 2008 anali ATI Radeon HD 4850. Izi zithunzi adaputala zaumisiri specifications pafupifupi sasiyana ku mpikisano mwachindunji, ndi mtengo womwe anali laling'ono kwambiri. Chifukwa, kampani NVIDIA anakakamizika kusintha mfundo mitengo yake ndi kupanga mosavuta. Chifukwa, ogula ndi mwayi kugula mphamvu zithunzi khadi pa mtengo angakwanitse zambiri monga ATI, ndi ku NVIDIA.

mankhwala Background

Pambuyo exiting ndi zithunzi khadi mndandanda Radeon HD 3000 kampani Canada ATI ndi zaka pafupifupi imodzi ndi theka sanali kugonjera mankhwala kusinthidwa. Pakuti Imani ndi anabweretsa mavuto azachuma mu 2007, ndipo chifukwa cha zimenezi, kwambiri yafupika kufunika kwa ntchito zithunzi njira. Pomaliza, eni akale anakakamizika kugulitsa yachiwiri yaikulu kwambiri mapulogalamu ndi Mlengi wa tchipisi video, ndipo wakhala monga wogula, AMD. Zinali pa funde ichi ndi ndinayamba kugulitsa ATI Radeon HD 4850 ndi waphindu buku la njira - ndi HD4870. Mtengo pa maziko mpikisano mwachindunji za "wobiriwira" msasa akhala m'munsi ndi mlingo wa ntchito mafomu kwambiri - pafupifupi zofanana.

Pa-Chip kanema khadi adakali panayikidwa ATI Radeon HD 4850. chizindikiro Oyendetsa "chothandizira" zino komanso Poyamba chizindikiro cha sewerolo Canada. Komano, mapulogalamu pomwe, wakhala m'malo mwa AMD. Chifukwa, m'tsogolo, mankhwala kale ikutchedwa Radeon HD 4850 AMD a.

njira kagawo kakang'ono

ATI Radeon HD 4850 yamangidwa pa maziko a munthu wa asonyeza michenga yopangira zida zamagetsi GPU 2008. Motero, specifications luso ankaloledwa nthawi kuti kuthetsa iliyonse vuto. Chifukwa cha zimenezi, iye wakhala lolunjika pa ntchito zikuchokera zabwino makompyuta zochita Masewero a nthawi, kapena zithunzi workstations. theoretically, izo zikanakhoza amagwiranso kapangidwe ndi workstations kapena matumizidwe ophatikizika amawu, nyimbo ndi zithunzi ma PC, koma mu nkhani iyi mphamvu si bwino ntchito, ndipo njira imeneyi kwa mfundo chuma view sanatero wolungamitsidwa kwathunthu. Kachitidwe amenewa amapezeka molongosoka zimapezeka pa mtengo wotsika.

Mungasankhe

Zigawo zikuluzikulu mu mankhwala anali motere:

• Khadi yokha anaika dongosolo kuzirala.

• Malangizo Buku, chitsimikizo khadi wodzilemekeza.

• CD-ROM distributions, dalaivala ndi ena mapulogalamu.

Anthu ena opanga kulimbikitsa zina malonda a mankhwala m'malo alipidwa katoni pa zitsulo onyamula choncho. Chimanena umafunika chikhalidwe chake. Wamkulu kufalitsa mchitidwewu sanalandire, koma chakuti akadali kofunika kudziwa.

modes wa ntchito

Kuweta akafuna kugwira ntchito mankhwala - ndi khadi ndife gawo la PC. Koma njira umalimbikitsa ATI kampani luso amatchedwa "Crossfire." Kwenikweni ake kwagona kuti mipata angapo PCI Express 16X mtundu anapereka zithunzi angapo accelerator (zambiri mu nkhani iyi 2 kapena 3). Iwo anapitiriza chikugwirizana ndi mzake ndi adaputala azamagetsi wapadera. Chifukwa cha processing wa nkhani likutipatsa anali iperekedwe zithunzi angapo accelerators, ndipo n'zotheka kupeza kuwonjezeka kwambiri liwiro.

Magawo zithunzi accelerator

Code dzina la Chip pakachitsulo, ndi maziko a Radeon HD 4850 ndi ATI, - RV770 index ovomereza. Linapangidwa pa 55 nm ndondomeko luso, komwe panthawiyo anali abwino kwambiri. Mu Chip izi michenga yopangira zida zamagetsi miliyoni 956 transistor zinthu akhala ntchito. Kutentha paketi ndi Pankhaniyi anali wofanana 110 Watts. Chiwerengero cha mapurosesa poyerekeza ndi m'mbuyomu mibadwo awiri makadi kuchuluka maulendo oposa 2 kwa zidutswa 320 kwa 800. Ndi izi njira zomangamanga kuloledwa kwambiri pa liwiro la Chip lapansi. Komanso, mamangidwe a mapurosesa awa redesigned.

Mfundo yachiwiri - kuwonjezera chiwerengero cha mayunitsi kapangidwe ku 16 40. Koma chiwerengero cha ROP midadada (rasterization ntchito) sali anasintha ndi kukhala pa 16. Memory bandiwifi anali ofanana mu nkhani iyi, 64 GB / s. The adaputala wakhala wokometsedwa kwa ntchito ndi basi PCI Express 2.0 mode. Mukhoza kugwiritsa ntchito mu mawonekedwe a 1.0, koma kuchepetsa liwiro la. Koma mu mavabodi ndi kuthandiza 3,0 "bottleneck" izo ndi zithunzi accelerator. Choncho, ntchito amaoneka ngati zithunzi accelerator ndi mulingo woyenera chikutanthauza molumikizana ndi mavabodi, amene amagwira ntchito mwamphamvu mu PCI Express mode v. 2.0.

chikumbukiro

Ntchito RAM tchipisi GDDR3 muyezo anamangidwa ATI Radeon HD 4850. 512Mb - ndi kuchuluka kwa RAM mukhoza nthawi zambiri amapezeka molumikizana ndi Chip pakachitsulo. zochepa wamba ndi zambiri zotsogola Mabaibulo N'zochititsa chidwi nkhaniyi, amene kale anamaliza ndi 1 GB wa RAM. Pang'ono kukumbukira basi ndi Pankhaniyi anakwana olimba, ngakhale mwa mfundo lero 256 Akamva.

Pafupifupi magawo zofanana anali zithunzi akulu makadi mzere - HD 4870. Koma zimenezo ziri mtundu wa kukumbukira Pankhaniyi kale GDDR5. Zimenezi zinathandiza kupeza apamwamba wotchi imathamanga ndi milingo ntchito kuiwalidwa. Yerekezerani ndi HD 4850 mtengo uwu unali 2000 chokha MHz, pamene HD 4870 - 3600 MHz.

woyendetsa

The vuto kumayambiriro kwa malonda anali chabe woyendetsa. Zikuoneka mapulogalamu Canada tiribe nthawi kuti abwere nawo ku ungwiro, ndi chifukwa panali zolakwika zosiyanasiyana pouza zidole kuthamanga pa ma PC ndi ATI Radeon HD 4850. Woyendetsa komanso wakhala zina woyengeka, ndi onse zolakwa kuzindikiridwa inathetsedwa. Mu nkhani iyi, ATI chizindikiro mu mapulogalamu m'malo ndi AMD. zosintha zimenezi, chifukwa cha maganizo wosuta, anapereka ntchito khola ambiri a zithunzi ngati adaputala azamagetsi. Ndipo pa Mabaibulo onse yaikulu ya opaleshoni dongosolo "windose" pa nthawi - XP "Vista" ndi "7". Chabwino, pang'ono dongosolo mapulogalamu ndi mu nkhani iyi, salinso ndi mbali yaikulu, ndipo akhoza kuvala zosintha Os 32-bit, kapena ngakhale pa 64-bit.

Vuto mathamangitsidwe ndi

kuthekera Overclocking mu Chip izi michenga yopangira zida zamagetsi zinali zabwino ndithu. Koma opaleshoni ngati kunali koyenera kuti akonzekeretse ndi PC wamphamvu mphamvu kotunga (osachepera 750 W). Komanso zithunzi accelerator ayenera akhale okonzeka ndi dongosolo patsogolo kuzirala. Choncho makadi ndi chabe koziziritsira ndi dongosolo m'munsi kuzirala ali osavomerezeka overclock. Ndipo mankhwala okha ndi kampani ya coolers akhoza pansi njirayi. Motero, ntchito ATI Overdrive zofunikira angakhululukire m'malo osakaniza 625 MHz (kwa Chip zithunzi) 2000 MHz (kwa RAM) lumikiza 685 MHz ndi 2150 MHz, motero. Izi zina peresenti 8-9 liwiro. Komanso kusintha chotero accelerator kunali kosatheka. Kwenikweni, ngati kugonjetsa malire a 700 MHz, accelerator umenewu wakhala mpikisano mwachindunji wamkulu chitsanzo HD 4870. Kuyambira maganizo a malonda zikatero imangokhala zosavomerezeka.

Nawo mankhwala pa mfundo kuchoka

ATI Radeon HD 4850 zithunzi khadi pa nthawi ya kumasulidwa ake, monga taonera kale, anali wodzipereka pampikisano mwachindunji mankhwala awiri kuchokera NVIDIA. Izi GeForce 8800GTS ndi GeForce 9800GTX. Mbali yoyamba, ndi parity pakati pa mankhwala onse anali mu mtengo ndi ntchito. Ndipo liwiro kunapezeka kuti kwambiri makamaka mankhwala kuchokera ATI. Koma zili mode yachibadwa. Pankhani ya mathamangitsidwe njira NVIDIA kuchepetsa backlog ndipo nthawi zina ngakhale adzatuluka kutsogolo. Koma GeForce 9800GTX kuganizira specifications ake luso anali waphindu zithunzi accelerators, ndi chifukwa, ndalama zambiri. Kusiyana liwiro peresenti 7-10, amene ngakhale overclocking salola chipukuta misozi.

Muzochitika mu mayesero kupanga

Mu mode yachibadwa HD 4850 mu PC MARK kupanga 2006 mayeso amapereka mfundo 12.200. Ngati overclocked kuti mafurikwense ndi 685MGts 2150MGts motero, n'zotheka kupeza zina mfundo chikwi. Chifukwa cha ntchito zake Pankhaniyi adzakhala imawunikidwa mwamsanga mfundo 13.200. Nayenso GeForce 880GTS mu nkhani iyi, ngakhale achidule kale amapereka mfundo 13.500. Chabwino, ngati ngakhale overclocked kuti 820MGts / 1890MGts, izo alandira kale mfundo 15,000. Chifukwa, ndi kupanga mayeso yankho ku "wobiriwira" wopanga zikuwoneka bwino. Koma ntchito enieni mfundo zimenezi pafupifupi kawirikawiri amakhala panalibe ubale. makhalidwe amenewa kusonyeza mkulu wa kukhathamiritsa mapulogalamu. Pankhaniyi, dalaivala pa zithunzi khadi ATI Radeon HD 4850 si "anatsekeredwa" mayeso izi.

Mwayi mu masewera a nthawi imeneyo

zinthu kopambana osiyana ndi ntchito Masewero mawu a ntchito mu aliyense mankhwala mzere ATI Radeon HD 4850 Series. Woyendetsa Pankhaniyi kale musati mbali ofunika.

Tiyeni tiyambe ndi Mdani Gawo lidagwedezeka nkhondo. Mu masewerowa, ntchitoyo taphunzira za ngwazi za overtakes ngakhale 9800GTX. The HD 4850 ndi chiwerengero cha zithunzi linanena bungwe pa chachiwiri ndi wofanana 86. Nayenso 9800GTX, mtengo uwu ndi 81, pamene 8800GTS - onse 71 Chiwerengerochi chomveka kwa akafuna 1680 × 1050. ndi kuwonjezeka mu chikalata mpaka 1920 × 1200 azimuth akupitiriza, ndi zizindikiro adzakhala ndi ankalemekeza 72, 66 ndi 58.

N'chimodzimodzinso ndi "Theka Moyo 2". Pakuti loyamba mode mtengo adzakhala wofanana 111, 103 ndi 89, ndipo kwachiwiri - 88, 82 ndi 71. Pang'ono anasintha zinthu mu Perseus lamulo. Ndiye mtsogoleri kwayamba 9800GTX njira ndi zizindikiro 184 (kwa 1680 × 1050) ndi 149 (kwa 1920 × 1200). Indicators HD 4850 ndi 162 ndi 127 motero. Chabwino, pafupifupi wofanana 8800GTS - 157 ndi 129.

Mumakhala chimodzimodzi ndi mayitanidwe antchito 4. Pankhaniyi mfundo wofanana 9800GTX 82 ndi 72 chifukwa HD 4850 - 79 67 ndi 8800GTS - 72 62. The kusiyana pakati pa malo oyamba ndi wachiwiri mu nkhani iyi, wooneka mwa mawu a ntchito koma mtengo zosiyana kwambiri.

Mu zenizeni ndime 3 kachiwiri zinthu zimasintha kwambiri. Mtsogoleri anakhala HD 4850 ndi zizindikiro 121 (kwa 1680 × 1050) ndi 97 (kwa 1920 × 1200). Mu malo lachiwiri - 9800GTX m'ma zizindikiro 117 ndi 92. Otsiriza - 8800GTS ndi 102 ndi 80 motero.

A azimuth ofanana anapitiriza mafomu kwambiri Masewero. Nthawi zambiri chapezeka chaposa HD 4850, ngakhale pang'ono chabe, mpikisano ake mwachindunji mu nkhope ya 9800GTX. Komanso zimenezi re anthu 70 peresenti mapulogalamu. Koma otsalawo 30% kale mtsogoleri 9800GTX. Koma tisaiwale kuti kusiyana sanali tanthauzo kwambiri. Pamene Chip uyu anapangidwa ndi 9800GTX lotha pa nthawi ndondomeko luso (65 nm) ndipo anali ndi kutentha apamwamba (156 Watts). Iwo likukhalira kuti kugula kwambiri poyerekeza panthawi imeneyo anali basi HD 4850.

kamangidwe Special khadi iyi

The akatswiri pa nthawi imeneyo akadali wopanga Canada wa zotsatira zimatheka atonga kusiya. Iwo anamasulidwa ndi kusinthidwa patsogolo kwambiri a accelerator wa - ATI Radeon HD 4850 X2. Manambala oyambirira X2 mfundo chakuti ichi ndi wapawiri-GPU zithunzi khadi. Choncho, izo zili ndi dongosolo bwino kuzirala, ndi specifications ake luso, ngakhale tsopano angathetse mavuto ambiri. Komanso pa mankhwala amenewa ndi kuvomerezedwa pano 1 GB wa RAM. Mtengo wa zoterezi accelerator zambiri zodula. The okha zoipa kuti inali nthawi yoyamba pambuyo chiyambi cha malonda, - zoipa mapulogalamu kukhathamiritsa. Osati zidole onse "ngati" zinayambira. Koma pomwe zina la akatswiri mapulogalamu kuchokera AMD kale anaganiza nkhani imeneyi.

mtengo wa

Kwambiri, kwambiri khalidwe anatembenuka ATI Radeon HD 4850. zofunika kwenikweni chidwi ndi zotsatira zikuonetsa liwilo. Chifukwa, monga mankhwala akhoza kukhala wotchipa ndi angagulidwe. Koma ngakhale mu zinthu zovuta zachuma, ATI ali anakwanitsa kukhalabe olimba a mtengo ndi ntchito ndi kupereka accelerator mtengo demokalase a $ 199. Koma kusinthidwa izi zofunika kwambiri anayamikira. Kenako panali Mabaibulo zambiri zamakono, mtengo umene akafuna ngakhale 320 dollars. Koma mu nkhani iyi, wosuta akulandira yankho bwino ndi mkulu khalidwe koziziritsira ndi mafurikwense mkulu. Komanso, pamene anali kuthekera, ngakhale pang'ono, overclocking zithunzi accelerator.

Reviews

The drawback kiyi wa onse njira mzere ATI Radeon HD 4850 Series anali ofooka mapulogalamu. Nthawi zambiri, dalaivala mankhwala anatsogolera chakuti ena masewera a pakompyuta ali sayenera unathandizira pa hardware chimodzimodzi. Awa anali "outliers" ku masewera, ndi "yozizira koopsa", ndi zikamera wa "wakuda" chophimba, ngakhale kompyuta ntchito zabwino. Iwo adalionetsera ndemanga za eni zoterezi accelerator. Komano, ife kusintha mapulogalamu, mavuto onse anathana ndi m'tsogolo palibe mavuto ndi Radeon HD 4850 ndi ATI.

Windows 7 dalaivala kuwerenganso chimodzimodzi. Posachedwa inali kuperekedwa "yaiwisi" msonkhano ndi kuipa zina, zomwe kale anabweretsa akatswiri AMD ku ungwiro. Ubwino waukulu wa mankhwala anali chiŵerengero cha "mtengo / ntchito". Pa mtengo wa madola 199, mankhwala akhoza kupikisana pafupifupi wofanana ndi mtengo 8800GTS GeForce kapena GeForce 9800GTX.

zotsatira

kusintha kulikonse chosintha mu kagawo kakang'ono wa zithunzi accelerators si anayambitsa Radeon HD 4850 ndi ATI ndi mchimwene wake mu nkhope ya HD 4870. Ichi ndi kusintha zinachokera mbadwo wakale wa mankhwala, ngakhale ndi processing magawo akuluakulu luso zochita. Koma zikamera njira izi mu gawo umafunika, "ndinagwedeza» ATI kampani mwachindunji mpikisano - NVIDIA. Chifukwa, lomaliza ndikusinthidwa mfundo mitengo yake ndi kuchepetsa ndalama kwa zithunzi accelerators mu gawo lino. Izi adzapindula yekha ogula komaliza amene ali mpata njira zosavuta pa mtengo yafupika. Ndipo mungathe kusankha zithunzi khadi, kapena ku "ofiira" msasa (ie, ATI / AMD), kapena "wobiriwira» (NVIDIA).