Intel Core Ultra 400D and 400DX cache sizes leak, filling in Nova Lake-S gaps

Jaykihn has shared what appears to be the missing cache piece for Intel’s upcoming Nova Lake-S desktop lineup. In a new post the leaker listed five cache totals for Core Ultra 400D and 400DX class parts: 16+32 with 288MB, 16+24 with 264MB , 8+16 with 144MB , 8+12 with 132MB , and 6+12 with 108MB.

That lines up with our previous Nova Lake-S leak , which already outlined the broader desktop stack from 6 to 52 cores, with 35W, 65W, 125W, and 175W models. That earlier report showed the full SKU ladder, including dual compute tile parts at the top, but it did not fully explain how Intel’s big-cache variants would scale across the rumored 44-core and 52-core designs. That wasn’t included in our leak. A later Jaykihn-based update also revised one dual-tile SKU from 42 cores to 44 cores.

bLLC configuration

The second Jaykihn post adds some context on how those totals may be assembled. According to that post, one P cluster carries two shared 12MB slices, while one E cluster carries one 12MB slice, with the layout described as “ 4*(2×12) + 3*12. ” That does not confirm Intel’s final marketing structure or whether all of this cache is exposed the same way across every SKU, but it does show a path to the 108MB to 288MB figures now being circulated.

The new information fills in the missing cache map for the big-cache parts. The 8+16 and 8+12 rumors now have specific totals attached, and the dual compute tile variants finally move from a general “up to 288MB” claim to distinct 264MB and 288MB entries.

The new posts fit cleanly into the Nova Lake-S picture that has been forming over the past week, and they give a better idea of how Intel may segment its cache-heavy desktop parts. If Core Ultra 400D and 400DX branding is indeed part of the final plan. So our Nova Lake-S lineup is slowly filling these missing specs.

Source: Jaykihn

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