Intel is currently experiencing significant issues with its 10nm lithography, which is causing problems for the company. They are overly reliant on 14nm lithography , which is preventing them from meeting demand and leaving them behind the competition. However, a slide has now been leaked showing Intel's Barlow Pass DIMMs, which will support up to 3200MT/s DDR4 with a TDP of 15W.
This is intended for Optane memories for Cooper Lake and Ice Lake processors. Barlow Pass could offer a 15% bandwidth improvement for Optane persistent memories. We are talking about extra performance and therefore efficiency. A very interesting solution that we will have to see, when it reaches the market, its real contribution.
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Barlow Pass will be a replacement for Apache Pass technology in Cascade Lake processors. Apache Pass was the first DDR4-compliant Optane persistent memory DIMM integration. A technology based on 3D XPoint from Intel, in this case second generation, which will double the bit density to four layers.
The most relevant data is that Barlow Pass will offer support for 3200MT / s DDR4 and a TDP of 15W, with an increase in bandwidth of 15%. Apache PASS offered only 2666MT / s bandwidth, making it a noticeable performance improvement.
A slide, on the other hand, indicating two versions of this Intel technology. On one side will be the Whitley platform and the other Cedar Island. The latter will limit support to 2933MT / s, while Whitley will support up to 4TB per socket and has four two-channel IMCs.
Whitley will be the primary solution for Cooper Lake-SP and Ice Lake-SP, which are due out this year. Cedar Island will be a solution for 4S and 8S platforms, respectively, supporting 8-channel and 6-channel memory.
As a curiosity, Barlow Pass will have a "full blue DIMM heatsink" for better identification in data centers.
Source: TH
