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becco (Offline)
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Status : 64bit whore
22-05-08, 16:51

jangan terkecoh ama embel2 DDR2, DDR3, DDR4, DDR5
itu sebenarnya hanya cara untuk membantu bandwidth GPU kok
AMD emang harus ambil GDDR5 karena HD4870 mereka cuma make 256bit
sedangkan Nvidia cukup make GDDR3 karena upcoming GTX 280 udah make 512bit
sekali lagi ini HANYA masalah jalur bandwidth kok, hanya pendukung

belum tentu yang make GDDR5 itu kenceng bandwidthnya


as I said, mohon dipahami dan dimengerti
makin cepet speed DDR itu kan cuma bantu kasih bandwidth aja sebenarnya
masalah data yang lewat besar ato kecil kan juga bergantung kemampuan core GPU
misal 512bit make DDR3 speed 2050MHz
there's (512*2050)/8 = 130GB/s bandwidth

mungkin make DDR5 bisa bengkak di harga beli IC GDDR5
tapi menurunkan cost research make interface 512bit
misal make 256bit tapi dengan DDR5 4000MHz (denger2 GDDR5 antara 3600MHz ampe 4600MHz)
there's (256*4000)/8 = 128GB/s bandwidth


gitu aja kok
sisi lain tampak sok mewah make GDDR5
tapi pada prakteknya hanya memberikan bandwidth yang lebih lebar
dengan interface yang lebih kecil (let's say 256bit) .... you know kan, 512bit bus interface itu minta ampun boros energi buang biaya






Quote:
John Carmack's RAGE apparently needs 25GB to store textures and other artworks
Man, those shadows must be seriously black this time! LoL

Last edited by becco; 22-05-08 at 16:56.
   
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