AMD RDNA 4 显卡（Radeon RX 8000 系列）：规格、定价和性能

Makadi ojambula a AMD a RDNA 4 (omwe amatchedwanso mndandanda wa Radeon RX 8000) ali kale m’chizimezime, koma akadali chinsinsi. Mwamwayi, AMD ikadali chete za ma GPU ake a m’badwo wotsatira, otsatsa osiyanasiyana amathetsa chete ndi mphekesera zambiri komanso zongopeka.

Zomwe zikuyenera kukhazikitsidwa chaka chino kapena koyambirira kwa 2025, ma RDNA 4 GPU atha kupatsa Nvidia kuthamangitsa ndalama zake, koma kodi azitha kupikisana ndi ena mwamakadi ojambula bwino kwambiri kuchokera pamndandanda womwe ukubwera wa RTX 50? Ichi ndi chimodzi mwazinthu zochepa zomwe otsatsa onse amavomereza, ndipo tidzakuuzani zonse pazankhani zathu za RDNA 4 pansipa.

RDNA 4: Zambiri

Chilichonse chomwe tikudziwa mpaka pano chokhudza zomwe AMD’s RDNA 4 zimachokera. Zina mwazidziwitso zimadutsana pakati pa magwero osiyanasiyana, koma zikafika pazowunikira, zambiri zanzeru zimachokera kwa Tom wa Lamulo la Moore Lakufa pa YouTube. Pakadali pano, YouTuber ikuneneratu kuti AMD ingotulutsa RDNA 4 mu masinthidwe awiri: Navi 48 ndi Navi 44.

Chinthu chimodzi chomwe magwero ambiri akuwonekera bwino ndipo akhala akukambirana kwa miyezi ingapo ndikuti ma GPU amtundu wotsatira wa AMD sadzakhala ndi zofunikira kuti agwirizane ndi ma GPU apamwamba a Nvidia, monga RTX 5090. AMD ikuyang’ana gawo lapakati. , zomwe zikuwonekera mu mphekesera za tchipisi zonse ziwiri.

Malinga ndi Moore’s Law Is Dead, Navi 48 ikhala mbiri ya AMD ya m’badwo uno, ndipo ipezeka mu RX 8800 XT GPU. Kuyerekeza koyambirira kumatsimikizira GPU iyi ngati ili ndi mawonekedwe a 256-bit, ndi kukumbukira kwa GDDR6 komwe kumakhala 20Gbps. Ndizothekanso kuti ikhoza kubwera ndi basi ya 192-bit, monga zanenedwa ndi ena otsikitsa. Navi 44 GPU imanenedwa kuti imasewera basi ya 128-bit kukumbukira komanso kufa kochepa kwambiri.

Kusankha kugwiritsa ntchito GDDR6 m’malo mwa GDDR7 kungawoneke ngati kodabwitsa, popeza ma GPU amtundu wotsatira wa Nvidia akuti akugwiritsa ntchito mulingo wa GDDR7 wachangu komanso waposachedwa. Moore’s Law Is Dead akuganiza kuti AMD mwina idakonza zogwiritsa ntchito kukumbukira kwa GDDR7 mu – zomwe akuti zathetsedwa – gawo lomaliza la mzerewu, womwe umatchedwa Navi 41 (kapena Navi 4C ndi Navi 4X) ndi Navi 42. Navi 41 ikadakhala wolowa m’malo wa RX 7900 XTX zikadakhala zenizeni. Komabe, ma midrange mpaka makhadi olowera onse amanenedwa kuti ali ndi kukumbukira kwa GDDR6.

18Gbps yokha

– Kepler (@Kepler_L2) Epulo 23, 2024

M’malo mwake, malipoti aposachedwa ochokera ku Kepler_L2 ndi Tom’s Hardware zikuwonetsa kuti AMD samangomamatira ku ma module a GDDR6 koma imathanso kulepheretsa bandwidth ndikugwiritsa ntchito ma module a 18Gbps m’malo mwa mitundu yofulumira ya 20Gbps yomwe tawona muzithunzi za RDNA 3. Ngakhale RX 7800 XT imagwiritsa ntchito ma module a 19.5Gbps, kotero izi zitha kukhala zotsika. Ndikofunikira kuyandikira izi ndi kukayikira kwina, komabe.

Poyambirira, kuyerekeza koyembekezeka kwambiri kunanena kuti RDNA 4 ikhoza kufika pa liwiro la wotchi ya 3.5GHz, koma maulosi amenewo tsopano asinthidwa kukhala 3GHz yomveka mpaka 3.3GHz pamitundu yopitilira muyeso yopangidwa ndi anzawo a AMD. Ngakhale pamenepo, uku ndikuwonjeza kwa wotchi yamasewera kuposa RX 7900 XTX, yomwe imakhala ndi ma frequency a 2.3GHz. N’kutheka kuti zonena zimenezo sizingachitike.

Miyezi ingapo yapitayo, Moore’s Law Is Dead adalankhula za Navi 43 GPU yomwe ingatheke, yomwe siyikutchulidwanso. Malinga ndi mphekesera, Navi 43 idanenedwa kuti imasewera magawo 64 a compute (CUs), Navi 44 yokhala ndi 32 CUs. Komabe, ngakhale gwero la kutayikirako adachenjeza kuti izi sizikudziwika.

Zosintha zaposachedwa zimachokera RedGamingTechamene akuganiza kuti Navi 48 GPU idzabwera ndi 32 workgroup processors (WGPs), 64MB ya Infinity Cache, ndi 256-bit memory basi. Pakadali pano, Navi 44 GPU akuti idadulidwa kwambiri, masewera 16 WGPs, 32MB Infinity Cache, ndi basi yopapatiza kwambiri ya 128-bit.

Zina zonse sizikudziwikabe pakadali pano; sipanatchulidwepo kuchuluka kwa ma accelerator a AI, ma ray tracing accelerators, kapena kuchuluka kwa VRAM. Tiyenera kudikirira mpaka titayandikira tsiku lotulutsa.

RDNA 4: Mitengo ndi tsiku lomasulidwa

Pakati pa ma GPU onse omwe angatuluke chaka chino, AMD ya RDNA 4 nthawi zambiri inkaganiziridwa kuti ndiyomwe ingathe kugunda mashelufu mu 2024. Ngakhale apo, pakalibe zokayikira zambiri, ndipo masiku omasulidwa omwe amamveka amatha nthawi zitatu zosiyana.

Otulutsa ambiri amanena za kumasulidwa mu theka lachiwiri la 2024. Buku lina lolembedwa ndi Moore’s Law Is Dead limati RDNA 4 idzakhala yokonzeka kukhazikitsidwa mu gawo lachinayi, koma pali mwayi wochepa kuti utulutsidwe posachedwa; zomwe zimamveka ngati kuwombera nthawi yayitali panthawiyi. Ndizothekanso kuti itha kuchedwa mpaka kotala loyamba la 2025.

Zonong’onezana zaposachedwa zapangitsa kuti ziwoneke ngati AMD ingasankhe kuchedwetsa RDNA 4, kotero kuti nthawi ya 2024 ikuyamba kutsika.

Malinga ndi otulutsa ngati Kepler_L2, AMD idikirira mpaka CES 2025 kulengeza Navi 48 GPU – yomwe, monga tikudziwira tsopano, ikuyenera kukhala khadi loyimira. Navi 44 ikanatsatira gawo lachiwiri la 2025. Izi zikugwirizana ndi zina mwazinthu zosadziwika zomwe zatchulidwa ndi Lamulo la Moore Lakufa omwe YouTuber adagawana nawo kale chaka chino. Mmodzi wa magwero anati: “Zomwe ndinganene n’zakuti ife [AMD] tilibe udindo wotulutsa izi pakhomo mu 2024. […] Titha kuyambitsa chaka chino ngati tikufuna, koma momwe tikudziwira, Nvidia akungoyambitsa RTX 5090 chaka chino pamtengo wopusa. ” Izi zikutanthauza kuti kusowa kwa mpikisano kumatanthauza kuti AMD sifulumira kuchitapo kanthu.

O CES ndi ya N48. N44 mwina ndi Q2.

– Kepler (@Kepler_L2) Julayi 5, 2024

RedGamingTech amatchula magwero ake, akugwirizana ndi chiphunzitso chakuti RDNA 4 sichidzayambitsa mpaka 2025. YouTuber akunena kuti zikhoza kukhala chifukwa chakuti AMD idakali ndi makadi ambiri a Navi 31 ndi Navi 32 omwe alipo, ndipo popeza RDNA 4 idzachita. perekani magwiridwe antchito ofanana ndi Navi 31, ndizomveka kuti AMD sangakhale pachangu kutulutsa ma GPU atsopano.

Ndi ma GPU awiri a midrange pamwamba pa mzerewu, AMD siyenera kukhudzidwa ndi mpikisano kwambiri. Nvidia’s RTX 50-mndandanda sangakhale wowopsa, chifukwa Team Green ikhoza kutsegulidwa ndi RTX 5090, yomwe siili msika wandalama wa AMD nthawi ino – ngakhale kutulutsa kwatsopano kukuwonetsa kuti RTX 5080 ikhoza kubwera poyamba. Pakadali pano, otulutsa ena amati Nvidia ndi AMD sizitulutsa ma GPU atsopano mpaka 2025, zomwe zikuwonetsa chaka chokhumudwitsa kwa osewera.

Ndi zomwe zanenedwa, mosasamala kanthu za nthawi yeniyeni, titha kuwona ma GPU angapo apakompyuta a AMD kaye kenako ndikukhazikitsa laputopu mtsogolomo – poganiza kuti ndizosavuta kulowa m’badwo wotsatira kuposa uno.

Ngakhale AMD sangapambane pakuchita bwino, otsatsa akuganiza kuti atha kugwiritsa ntchito njira yankhanza nthawi ino, kumenya Nvidia malinga ndi mtengo wake. Mphekesera zimati Navi 44 GPU ikhoza kugulitsidwa pansi pa $400, pomwe Navi 48 (RX 8800 XT?) ikhoza kugulidwa pafupifupi $500. Uwu ndi mtengo wampikisano kwambiri womwe udachita kusambira kwa AMD ndi RX 7800 XT, kotero izi ndizomveka, koma zonse sizikudziwikabe. Titha kuwona kuwongolera kwa 30% potengera mtengo wogwirira ntchito.

RDNA 4: Zomangamanga

Navi 44 ndi Navi 48 akuti adamangidwa pamachitidwe a TSMC a N4P, omwe, monga momwe Moore’s Law Is Dead amanenera, adzakhala manambala amodzi kuposa node yomwe imapezeka mu Nvidia’s Ada Lovelace GPUs. Navi 48 ili ndi kukula kwa 300 mpaka 350 mm², pomwe Navi 44 ndi yaying’ono kwambiri pansi pa 210mm², yomwe ili pafupi ndi kukula kofanana ndi kufa mkati mwa Nvidia’s RTX 4060 Ti.

Dongosolo la mayina a tchipisi awa ndikuchoka kwa mibadwo yam’mbuyomu. Kawirikawiri, chipangizo chamtundu wa AMD chinalinso chomwe chinali ndi chiwerengero chochepa kwambiri, monga Navi 31 mu RDNA 3. Panthawiyi, tikupeza Navi 44 monga GPU yotsika kwambiri ndi Navi 48 monga chithunzithunzi chapamwamba kwambiri. Popeza mphekesera zina zonse, nyimbo zamtunduwu – AMD imatchedwa tchipisi tating’ono potengera dongosolo lachitukuko, ndiye ikaletsa chipangizo choyambirira cha Navi 41, Navi 48 mwina idayamba chitukuko pambuyo pake.

Pankhani ya zomangamanga, onse a Moore’s Law Is Dead ndi RedGamingTech pa YouTube kunena kuti tikuyang’ana kufa kwa monolithic. Zikuwoneka kuti tikadakhala ndi MCM mu ma GPU a RX 8000 ngati sichoncho chifukwa chakuti mitundu yotsika kwambiri idathetsedwa, kotero kuti zomangamanga sizingawonekerenso mpaka RDNA 5.

Komabe, titha kuwona kukonzanso kwa kamangidwe ka RDNA 4. Otulutsa zida za Hardware akhala akunena kuti AMD ikufuna kukonza magwiridwe antchito a ma GPU ake, ndipo RedGamingTech ikuganiza kuti titha kuwona kusintha kwa injini ya geometry. Magwero ena amatchulanso kuyendetsa kwa AMD kuti apikisane bwino mumayendedwe a AI ndi kutsata ma ray.

RDNA 4: Kuchita

Zikuwoneka kuti AMD sidzamenya GPU yake yapamwamba (Navi 31) nthawi ino. RX 7900 XTX imanenedwa kuti imatsogolera pakuwongolera koyera, koma ma GPU atsopano akuyenera kukonza kutsata kwa ray ndikukhala ndi mitengo yabwinoko.

Magwero ambiri amayerekeza kuti RX 8800 XT yomwe idanenedwayo iyenera kukhala pafupi ndi RX 7900 XT pakuchita. Moore’s Law Is Dead ikunena kuti ikhala pang’onopang’ono 10% kuposa RX 7900 XTX, kuyiyika pafupi ndi Navi 31 ndi RTX 4080 ya Nvidia. Iyenera kupitilira RTX 4070 Ti Super ndi malire ang’onoang’ono, ndipo RedGamingTech ikuneneratu kuti ikhala yothamanga pang’ono kuposa RX 7900 GRE yaposachedwa.

Chotsatira chabwino kwambiri chinali chakuti Navi 48 GPU idzatha kumenya Nvidia’s RTX 4080 Super pafupifupi theka la mtengo, koma ndi molawirira kwambiri kuti musangalale kwambiri. Izi zitha kukhala ntchito yayikulu kuti AMD ikwaniritse komanso njira yabwino yomenyera Nvidia mu 2024. Ngakhale AMD siyingadutse manambala amenewo ndikungopambana RTX 4070 Ti Super, koma mitengo ya GPU pafupifupi $500, kukhala kwambiri.

Pakadali pano, Navi 44 kufa (yomwe imatha kukhala RX 8700 XT) imanenedwa kuti ikupereka ntchito yofananira ndi AMD’s RX 7700 XT, koma pamtengo wotsika. Magwero ena amawona ngati kusintha kwa RX 7600 XT, koma kutsika poyerekeza ndi RX 7800 XT. Pakali pano, sizikudziwika ngati AMD itulutsa ma GPU ochulukirapo mum’badwo uno.

Inde

– Kepler (@Kepler_L2) Meyi 2, 2024

Posachedwapa, Kepler_L2 adayankha funso pa Twitter ndipo adatsimikiziranso kukayikira kuti AMD sangakhale ndi yankho ku RTX 5080 ya Nvidia ndi RTX 5090. -mpikisano wa gen kuchokera ku Nvidia mpaka kukhazikitsidwa kwa makhadi a midrange monga RTX 5060 ndi RTX 5070.

RDNA 4: Kufufuza kwa Ray

Kutsata kwa Ray ndi gawo limodzi pomwe Nvidia amasunga chitsogozo chodziwika bwino pa AMD. Ichi sichirinso chowonadi chapadziko lonse monga momwe zinalili m’mibadwo yakale, komabe ndizoona. Nvidia GPU yofananira nthawi zambiri imatha kuwerengedwa kuti ipitilira AMD pomwe kusaka kwa ray kwayatsidwa, ngakhale kusiyana kuli kokulirapo m’masewera ena.

Kupititsa patsogolo magwiridwe antchito a ray ndichinthu chomwe otulutsa ambiri amatsindika kufunikira kwa makadi ojambula a RX 8000. RedGamingTech imati tikuyang’ana kukwera kwa 10% mpaka 30%, komwe kuli kosiyanasiyana, koma akadali masiku oyambirira. Komabe, a Moore’s Law Is Dead akuti magwero ake sakukhulupirira kuti AMD idzatha kumenya Nvidia mu RDNA 4 komabe – cholinga chake ndikumenya RDNA 3, ndikukweza kutsata kwa ray pagawo lililonse.

Ngakhale mphekesera zikuti RDNA 4 ikhalabe yocheperako kuposa Nvidia pazantchito izi, iyenera kupereka kusintha kwakukulu pamibadwo yam’mbuyomu. Navi 31 GPU imanenedwa kuti imaposa Navi 48 mu rasterization yoyera, koma ikhoza kugwera kumbuyo pakutsata ray.

Mu kanema waposachedwa, RedGamingTech analankhula za chinachake chofanana ndi kukonzanso kotheratu ponena za kufufuza kwa ray. The YouTuber amalingalira (kutengera magwero a Twitter, mukukumbukira) kuti RDNA 4 ikhoza kubwera ndi mapurosesa atsopano a gulu (WGPs). Pakufufuza kwa ray, ena mwamagwero a RedGamingTech akuti AMD ikutenga “njira yochulukirapo ngati Nvidia.”

RDNA3 RT idakhazikitsidwa pa RDNA2 ndi zosintha zina. RDNA4 RT ikuwoneka mosiyana kwambiri.

– Kepler (@Kepler_L2) Epulo 30, 2024

Kepler_L2 pa X (omwe kale anali Twitter) amavomerezana ndi RedGamingTech apa, ponena kuti tikhala tikuwona kamangidwe kamene kamangidwenso ka ray mu RDNA 4 – pomwe zomwe tidawona mu RDNA 3 zidachokera pakuyesa koyamba kwa AMD ku RDNA 2. Mu Julayi, a tipster anatsatira mfundo zolondola zokhudza kusintha kwa ray mu RDNA 4. akuti akubwera ndi RDNA 4, ngakhale ambiri aiwo amanenedwanso kuti akupezeka mu PlayStation 5 Pro, nawonso, omwe samatengera kamangidwe ka RDNA 4.

Zina mwazinthu zatsopano za RT zikubwera ndi gfx12/RDNA4. Ambiri ngati si onsewa ayenera kukhala mu PS5 Pro nawonso pic.twitter.com/AO5HaxJlMK

– Kepler (@Kepler_L2) Julayi 21, 2024

Izi zikugwirizana ndi kulondola komanso kuchita bwino kwa kufufuza kwa ray, zomwe ziyenera kupatsa osewera ma fps abwinoko komanso zowoneka bwino. Tsoka ilo, Kepler_L2 nayenso sanali wotsimikiza ngati AMD ingagonjetse Nvidia pakutsata ma ray ngakhale ndikusintha konseku, koma zikuwoneka ngati chiyambi chabwino.

Zonse zomwe zili pamwambazi zikadali zongopeka chabe, ndipo mphekesera za mbadwo uno zakhala zikusoweka modabwitsa. Tiyenera kukhala oleza mtima ndikuyang’ana maso athu kuti tichuluke kwambiri pamene tikuyandikira tsiku lomasulidwa.