Meta用CXL复用DDR4内存

报道称 Meta 为应对硬件成本飙升，在新一代 DDR5 服务器中通过定制 CXL 2.0 芯片复用旧 DDR4-2400 内存。该做法凸显内存价格上涨下，云厂商正通过架构创新延长既有资产寿命。

事件进展（2 篇报道）

1. 2026-07-03 04:07
   Reddit r/hardware Meta fights soaring hardware costs by reusing old DDR4 server memory in new DDR5-only servers — custom CXL 2.0 chip marries legacy DDR4-2400 with cutting-edge DDR5-6400
2. 2026-07-04 00:48
   Reddit r/technology Meta's solution to the global memory shortage is to use DDR4 in a DDR5 server, with a custom chip making the impossible possible

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