[情報] PS Vita處理器解密
Chipworks最近用X光穿透PS Vita處理器CXD5315GG拍照
http://ppt.cc/1JfJ
綜合Chipworks和2ch硬體眾的分析, 得到以下的結論:
1.CXD5315GG由東芝生產, Sony封裝
2.CXD5315GG有五層
最底層是SOC, CPU+GPU
對上一層是128MB VRAM, 記憶體種類不明
第三層是256MB LPDDR2
第四層留空
最頂層也是256MB LPDDR2
3.GPU SGX543MP4+的顯存位寬1024-bit(原來的SGX543MP4只有64-bit)
靠1080個マイクロバンプ直連VRAM, 記憶體頻寬為25.6GB/s
同樣技術當年也有用在PSP上, PSP的是256-bit 5.3GB/s
參考:
http://www.sony.co.jp/Products/SC-HP/cx_pal/vol74/pdf/featuring1_mcl.pdf
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