Intel’s next-generation desktop processors, codenamed Nova Lake-S, are rumored to introduce a new Big Last Level Cache (bLLC) design on high-end unlocked models, with top configurations reaching up to 52 CPU cores, according to a leak shared by hardware leaker @Haze2K1.
If this information is accurate, the reported specifications would show a significant increase in desktop core counts compared to recent Intel generations.
This information surfaced via social media posts and was subsequently compiled by industry sites such as VideoCardz. Intel has not confirmed any of the details, and all specifications should be considered unofficial and subject to change.
Four Nova Lake-S Configurations Referenced in the Leak
According to leaks, Intel is preparing four-core configurations for its Nova Lake-S desktop processors, which will feature a new bLLC design. These CPUs reportedly follow Intel’s recent hybrid architecture approach, incorporating performance cores (P-cores), efficiency cores (E-cores), and low-power efficiency (LPE) cores.
The reported configurations include:
- 16 P-cores + 32 E-cores + 4 LPE cores
- 14 P-cores + 24 E-cores + 4 LPE cores
- 8 P-cores + 16 E-cores + 4 LPE cores
- 8 P-cores + 12 E-cores + 4 LPE cores
If these configurations are accurate, the highest-end Nova Lake-S processor would total 52 CPU cores, representing a major increase compared with Intel’s existing desktop offerings.
What Big Last Level Cache (bLLC) Means
The leak describes bLLC, or Big Last Level Cache, as an extra cache layer beyond traditional last-level cache designs. Current reporting suggests this cache will be exclusive to unlocked “K”-series processors, indicating that Intel may be reserving this feature for the enthusiast and high-performance desktop segment.
For the top-tier Core Ultra 400K model, the leak claims a bLLC cache capacity of up to 288MB, while lower-end configurations may have up to 144MB. If implemented, this would represent a significant shift in Intel’s desktop cache strategy, which has historically relied on smaller shared cache pools compared to some competing designs.
Rumored Core Ultra 400K Lineup Breakdown
Based on the information available so far, the rumored Nova Lake-S desktop stack could include the following models:
| Processor Tier | Compute Tile | Total Cores | Core Configuration | Max bLLC Cache |
|---|---|---|---|---|
| Core Ultra 9 | Dual compute tile | Up to 52 cores | 16 P-cores + 32 E-cores + 4 LPE cores | Up to 288MB |
| Core Ultra 9 | Dual compute tile | 42 cores | 14 P-cores + 24 E-cores + 4 LPE cores | Up to 288MB |
| Core Ultra 7 | Single compute tile | 28 cores | 8 P-cores + 16 E-cores + 4 LPE cores | Up to 144MB |
| Core Ultra 7 | Single compute tile | 24 cores | 8 P-cores + 12 E-cores + 4 LPE cores | Up to 144MB |
The presence of dual compute tiles on higher-end models suggests Intel may continue using multi-tile designs to scale core counts beyond what a single tile can support.
How Nova Lake-S Differs From Current Intel Desktop CPUs
Intel’s recent desktop generations have steadily increased hybrid core counts, but none approach the numbers suggested in this leak. Alder Lake-S introduced hybrid architectures with up to 16 cores, while Raptor Lake-S expanded that to 24 cores. Arrow Lake-S, Intel’s current desktop platform, remains within a similar range.
A jump to up to 52 cores would represent one of the largest increases in mainstream desktop core counts in Intel’s history, even accounting for the mix of performance, efficiency, and low-power cores. If accurate, Nova Lake-S would significantly expand Intel’s desktop scaling strategy compared with prior generations.
Platform and Socket Details Point to LGA1954
The leak aligns with earlier platform chatter suggesting that Nova Lake-S will use a new LGA1954 socket, paired with a 900-series chipset. This would follow Intel’s established pattern of introducing new sockets alongside major architectural transitions.
One unconfirmed claim referenced in the leak suggests Intel could use Samsung’s 8nm process for the platform controller hub (PCH). This detail has not been independently corroborated and remains speculative.
How Nova Lake-S Fits Into Intel’s Roadmap
Intel has previously acknowledged Nova Lake as a future desktop architecture on its public roadmap, with availability expected around late 2026. However, the company has not released any official specifications related to core counts, cache structure, or platform capabilities.
If the rumored bLLC design and core configurations materialize, Nova Lake-S would represent one of Intel’s most substantial desktop architecture changes in recent years, both in terms of core scaling and cache strategy.
What Remains Unconfirmed
Despite the level of detail in the leak, many key aspects remain unknown, including:
- Clock speeds and boost behavior
- Memory support and bandwidth
- Power limits and efficiency targets
- Real-world performance impact of bLLC
As with all early leaks, final products may differ significantly from the reported configurations, or some models may never reach retail.
More information is likely to surface as Nova Lake-S moves closer to its expected late-2026 timeframe. Until Intel formally confirms the architecture and specifications, all details related to Core Ultra 400K Nova Lake-S processors should be treated as rumored and subject to change.
Sources: @Haze2K1 via Videocardz
