Intel Core Ultra 400 leak points to five dies with up to 52x cores

Intel hasn't yet officially confirmed that its upcoming Nova Lake-S desktop processors will be branded as the Core Ultra 400 series. However, a new report claims that the name is already set. The “Series 4” architecture is expected to feature Coyote Cove P-cores and Arctic Wolf E-cores.

According to VideoCardz, the documents they had access to indicate support for DDR5 memory speeds up to 8000MT/s, including ECC, CUDIMM, and CSODIMM compatibility. These same documents state that the platform uses a Socket V design and is specifically marked for forward socket compatibility across multiple generations. Moreover, processing power is complemented by the Intel NPU 6 and a unified integrated graphics block featuring two Xe3 GPU cores across all desktop packages.

The roadmap also details the connectivity features, which include integrated Wi-Fi 7, Low Energy Audio, and two Thunderbolt 5 ports. The platform supports 24 PCIe Gen5 lanes from the CPU, enabling discrete graphics over an x16 link and up to three x4 PCIe 5.0 links from the chipset. In the documents, Intel notes support for up to eight SSDs across PCIe 5.0 and 4.0 interfaces and the ability to drive four independent displays.

As per VideoCardz, Intel plans five distinct desktop die packages, all of which feature 4x LPE cores. These five packages include an 8-core, a 16-core, two 28-core (one with bLLC cache), and a 52-core (dual-die with bLLC cache). The packages are divided across multiple SKUs, ranging from 6-core to 52-core designs. Product segmentation spans 35W, 65W, 125W, and 175W TDPs. The 175W bracket consists of 52-core and 44-core variants, while the remainder of the stack follows the Core Ultra naming conventions: 9, 7, 5, and 3. A graphics-disabled GT0 variant, MS2KF, is also included in the preliminary list below:

SKU	Total Cores	Core Configuration	Code	Die notes	TDP/cTDP
TBD	52C	(8+16)+(8+16)+4	P3DX	Dual 8+16 CDIE DS die package	175W
TBD	44C	(8+12)+(8+12)+4	P2DX	Dual 8+16 CDIE DS die package	175W
Core Ultra 9	28C	8+16+4	P2D	8+16 CDIE DS die package	125W
Core Ultra 9	28C	8+16+4	P2K	8+16 CDIE die package	125W/65W
Core Ultra 9	22C	6+12+4	P2	8+16 CDIE DS die package	65W
Core Ultra 7	24C	8+12+4	P1D	8+16 CDIE DS die package	125W
Core Ultra 7	24C	8+12+4	P1K	8+16 CDIE die package	125W/65W
Core Ultra 7	16C	4+8+4	P1	4+8 CDIE die package	65W/35W
Core Ultra 5	22C	6+12+4	MS2K / MS2KF	8+16 CDIE die package, has GT0 variant (F SKU)	125W/65W
Core Ultra 5	12C	4+4+4	MS2	4+8 CDIE die package	65W/35W
Core Ultra 5	8C	4+0+4	MS1	4+0 CDIE die package	65W/35W
Core Ultra 3	6C	2+0+4	T1	4+0 CDIE die package	65W/35W

Mass production of Intel Nova Lake-S processors is reportedly scheduled for Q4 2026.

KitGuru says: Of all the Nova Lake-S SKUs in the preliminary list, which one looks the most interesting?

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