AMD VEGA壓住HBM2顯存 NVIDIA Volta 無視 - 3C

By Robert
at 2017-06-15T11:45
at 2017-06-15T11:45
Table of Contents
AMD今年會在Vega顯卡上使用HBM 2顯存,這也是消費級顯卡上首次商業化HBM 2顯存
一如2015年AMD率先帶來HBM顯存一樣。AMD為HBM 2顯存操碎了心,付出的代價也相當大
高端顯卡市場空缺了兩年時間了,Vega延期很大一個原因就是HBM 2顯存產能低、成本貴
。
另一方面NVIDIA對HBM 2顯存用於遊戲顯卡的態度就很冷淡,今年雖然發佈了Volta架構了
但是消費級的GeForce顯卡依然不會用HBM 2顯存,GDDR5X還是最佳選擇。
AMD是第一個商業化HBM顯存的公司,不過NVIDIA在HBM顯存技術上沒問題
實際上他們還是第一個使用HBM 2顯存的GPU公司,去年的Tesla P100顯卡上
就使用了四顆HBM 2堆疊顯存了,容量16GB,頻寬720GB/s,今年的Tesla V100
進一步把頻寬提升到了900GB/s,要比AMD的Vega顯卡還要激進,後者都放棄4顆HBM 2堆疊
改用成本更低的2顆HBM 2堆疊了,頻寬相比第一代HBM並無提升。
NVIDIA不在遊戲顯卡上使用HBM 2一事我們之前其實也爆料了,Fudzilla援引某消息靈通
的線人資訊
也報導說Volta的GeForce遊戲卡不會上HBM 2顯存,原因不外乎現在時機還太早,HBM 2顯
存還是太貴。
此外,他們還提到NVIDIA在Maxwell架構上開始致力於更好的記憶體壓縮技術
Pascal顯卡進一步改進,也就是說NVIDIA顯卡可以降低一些顯存頻寬的需求。
對NVIDIA來說,最佳的選擇還是GDDR5X,雖然GDDR6顯存最快在今年底就能問世
不過GDDR6標準依然是新興事物,而且現在能量產的GDDR6顯存速率在10-14Gbps
初期可能只有10-12Gbps,相對美光的GDDR5X顯存來說沒多大優勢,美光還在繼續改進
GDDR5X顯存
現在速率有10-12Gbps,年底還會有13-14Gbps的,頻寬不會比初期的GDDR6顯存差。
話說回來,AMD在這一代顯卡上押注了HBM 2顯存,NVIDIA同樣押注了美光的GDDR5X顯存
美光在顯存市場上相比三星、SK Hynix算是後來者,2015年才開始商業化出貨20nm工藝的
GDDR5顯存
不過美光獨力支撐了GDDR5X顯存,三星、SK Hynix都沒介入這種改良版顯存
現在來看NVIDIA、美光的冒險也是有成效的,至少在GDDR6成熟之前GDDR5X憑藉高頻率過
渡了一兩年。
來源︰http://news.mydrivers.com/1/536/536437.htm
VEGA 已經讓A粉徹底失望了
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