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532(3): 531 [sage_teoff] 2016/11/07(月)22:56 ID:AIXwnKii(2/4) AAS
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外部ﾘﾝｸ[cfm]:www.realworldtech.com
Topic: Updated CELL/BE roadmap
外部ﾘﾝｸ[pdf]:www-06.ibm.com
- PowerXCell 32ii (2 x PPE' + 32 x SPE') is replaced by PowerXCell 32iv (4 x PPE' + 32 x eSPE)
- higher frequency (~3.8GHz)
- 100% backword compatible
- Performance on PPE significantly better
- Performance per SPE equal or better (Significantly better on applications that benefit from new instructions)
- Better inter-SPE latency
- More on-chip memory (Is it mean LS will be larger than 256KB?)
- Better main memory latency and bandwidth
外部ﾘﾝｸ[php]:forum.beyond3d.com
Updated Cell roadmap
所以PowerXCell 32iv的強化有下列幾點：
1. PPE本身性能強化(同時數量?加；但是其實考慮原始的CELL的話，其實core比例是維持，然後PPE強化)
2. SPE新?指令強化、EIB效率改善(降低SPE間溝通的latency)
3. 可能有擴充Local Storage容量(引入SOI eDRAM？)
4. 記憶體系統升級
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