ATI Radeon HD 4800 Series: qhov kev piav qhia ntawm lub architectural nta ntawm outdated video card series

Ati Radeon HD 4800 Series именуется классически. Series ATI Radeon HD 4800 Series yog raug xa mus rau raws li ib tug classic. Tus thawj tug lej qhia lub cim ntawm ib tug adapter. Rau qhov thib ob tsev neeg nyob rau hauv tej qho. Lub ob qhia cov kev qauv. Chiv, tus nqi ntawm video phaib ntawm no tiam pib nrog ib tug cim ntawm 5,000 rubles. Tam sim no uas qhov kev tso tawm ntawm cov pab kiag li lawm lawm, lub qhov lag luam yuav muaj xws li pab kiag li lawm rau tus nqe ntawm 1000 rubles.

cov tub ntxhais

Lub yees duab tau muaj npe RV770. Nws muaj ntau tshaj 900 lab transistors. Ntawm cov hoob kawm, qhov no yog nej ib tug ntau, tab sis tsis yog ib tug cov ntaub ntawv. Txawm li cas los, ib qho kev tshaj 55-nm txheej txheem technology yuav txo tus nqi ntawm lawv qhov teeb meem thiab tuav cov kev sib tw rau ntev.

ATI Radeon HD 4800 Series довольно сильно снижены по сравнению с ядром предыдущего поколения. Kuv yuav tsum hais tias lub ATI zaus ntawm lub GPU lub Radeon HD 4800 Series yog heev txo piv rau lub yav dhau los tiam engine. Txawm li cas los, cov muaj peev xwm ntawm kev ntxhib los mos processors yuav tsum sib npaug drawback GPU frequencies.

Nws tsim nyog tshwj xeeb xim ntawm GDDR5 nco. Nws siv ua rau nws tau mus tsa tus bar ntawm lub tsheb npav bandwidth tsis nce nws me ntsis tob. Ntawm cov hoob kawm, tus nqi ntawm GDDR5 siab, tab sis nws ua ib tug me luag hauj lwm, raws li cov simplified arrangement ntawm tag nrho cov pab kiag li lawm rau lub Rooj Tswjhwm Saib.

Qhov tseem problematic qhov chaw video phaib nrog serial tooj 3 - kev ntxhib los mos processors. Ua lawv tus xov tooj rau 40 cia peb mus daws cov ntsiab teeb meem.

Txhim Kho ALU

видеокарта ATI Radeon HD 4800 Series очень зависима от уровня оптимизации кода шейдеров в 3D-программе. ATI Radeon HD 4800 Series graphics card, tej heev nyob rau theem ntawm kev optimization shader code nyob rau hauv 3D-kev pab cuam. Txawm li cas los, ib tug series ntawm adapters yog nruab nrog yim pua ALU, thiab nyob rau txhua tus tub ntxhais ntawm lub processor yog tam sim no nyob rau hauv Task Manager rau optimize tau. Nyob rau hauv lub phem tshaj cov ntaub ntawv, cov code yuav ib txhij tiav nyob rau hauv lub ALU 160. Yog hais tias txhua xam chav tsev yog loaded ntau xam hwj chim yuav ua ncaj rau ib tug teraflop. Qhov no xam yog piv rau NVIDIA flagship cuaj tiam.

End nplhaib architecture

ATI Radeon HD 4800 Series под микроскопом, можно увидеть, что в общем сохранены все технические особенности предыдущего поколения ядра. Xav lub processor graphics card ATI Radeon HD 4800 Series nyob rau hauv lub tshuab kuaj kab mob, koj yuav pom tias, nyob rau hauv kev muab khaws cia tseg rau tag nrho cov kev nta ntawm yav dhau los tiam cov tub ntxhais. Tam sim no, txawm li cas los, uas tsis yog-annular architecture.

Lub cim xeeb xws li kev interface uas ua haujlwm bidirectionally. Blocks uas tsis tas yuav ceev nkag tau mus rau cov lus qhia uas muaj nyob ib ncig ntawm cov tub ntxhais. Nyob rau hauv tas li ntawd, lub processor yog nyob ze tus tes hloov qhov, nws txuas pab kiag li lawm uas tsis tseem ceeb heev bandwidth. Yog hais tias lub efficiency ntawm cov tub ntxhais hais ntawm yav dhau los tiam mus txog lub cim ntawm 85%, cov kev txhim kho tau tso cai coj nws mus rau ib tug tswv yim tshaj plaws. ATI tus kws txawj hais tias cov xam units ua 40% ntau npaum.

Dispatch Processor

Task Manager yuav hu ua ib tug tseem ceeb ntaus ntawv ntawm tej graphics processor. Nws ua hauj lwm yog cov npaum nyiaj ntawm cov kev pab. Nyob rau hauv cov ntaub ntawv no, tag nrho cov ntsiav yuav tsum tau loaded sib npaug. Yog hais tias tus mob no yog tau ntsib, qhov kev kawm yuav tsum maximized.

количество блоков для хранения и обработки кода увеличилось. Nyob rau hauv tso zis ATI Radeon HD 4800 Series tooj ntawm blocks rau code cia thiab ua si. Nws kuj ua loj thiab tus naj npawb ntawm SIMD-array. Vim li no, txhua array yog tam sim no tsis ua hauj lwm nyob rau hauv kev rho tawm, cov ntaub ntawv yuav tsum exchanged yog tias tsim nyog. Nyob rau hauv tas li ntawd, lub optimization ntawm algorithms thiab raug mus rau lub Task Manager.

kev ntxhib los mos units

Nyob rau hauv lub thib peb tiam video card tsuas yog 16 ntxhib los mos units, uas yog kiag li tsis txaus rau feem ntau 3D-daim ntaub ntawv. Wherein txhua TMU lees paub rau tsuas yog ib qho pom chav tsev. Qhov no yog tshwj xeeb tshaj yog noticeable thaum lub los ua anisotropic filtering, thiab nws siv qhov txhia chaw.

Lub developers muaj npaum li cas mus rau hauv tus account qhov kev paub ntawm yav dhau los uas tsis. Tam sim no TMU nyob rau hauv txhua module yog 16 units, ua kev ntxhib los mos piv txwv thiab filtering los ntawm 4 thiab hais block. Coupled nrog lub zog bandwidth ntawm TMU kev kawm ntawv ntawm cov khoom no muaj ntau zog los 2.5 lub sij hawm.

Modules, raws li zoo raws li nyob rau hauv cov laus zaub adapters yog ua ke mus rau 4. Txawm li cas los, vim rau qhov optimization ntawm tus xov tooj ntawm transistors txo ntawm no.

cache

характеристики которой заметно выросли по сравнению с младшими адаптерами, получила новую систему кэшей. ATI Radeon HD 4800 Series graphics card, tus yam ntxwv uas markedly nce piv nrog yau adapters, tau txais ib tug tshiab cache system. Tam sim no, cov kev pauv ntawm cov ntaub ntawv nrog rau cov thawj theem cache tshwm sim nyob txog 480 Gb / s, lub thib ob - ib tug 380 Gb / s. Nyob rau hauv tas li ntawd, tag nrho cov SIMD tub ntxhais tam sim no ntsia nws tus kheej nco, uas tso cai rau koj khiav lag luam nyob rau tib lub sij hawm ib tug loj tus naj npawb ntawm cov ntaub ntawv.

tshiab nta

Dhau li ntawm tus yooj yim innovation, tsis muaj mob yuav tau muab sau tseg thiab me. Tag nrho cov ntawv nyob rau hauv lub HD 4800 series tau muab lawv maub los Realtek, uas tso cai rau koj mus ua hauj lwm ib txhij nrog yim raws. Nyob rau hauv cov ntaub ntawv no, lub siab tshaj plaws tso zis bitrate yog cia li tshaj 6 Mb / s. Lub sab sauv pluaj zauv zaus yog thaum 192 kHz.

Advanced nta tseem ceeb heev rau cov neeg uas yuav mus txuas rau lub multimedia computer system. о которой и без того лестны производителю, из-за описанных выше особенностей получила в свою армию фанатов еще и пользователей, не интересующихся компьютерными играми. ATI Radeon HD 4800 series, tus xyuas uas twb tsis tseeb ntxias chaw tsim tshuaj paus, vim hais tias ntawm cov yam ntxwv piav saum toj no muaj nyob rau hauv nws pab tub rog ntawm cov kiv cua thiab txawm cov neeg uas tsis xav nyob rau hauv computer ua si.

Ua-nyob rau hauv universal video decoder tsis yog tsuas yog ib qho yooj yim mus rau tiv nrog ua si high-txhais video, tab sis kuj muaj peev xwm ib txhij tso saib nws rau ob tug sib txawv saib. Yog li rau txhua zis ntaus tau tso zis txawv Pib ntsais koj teeb.