Intel Xeon D-2798NT socket: BGA 2579

What the Xeon D-2798NT is

Released in February 2022, the Intel Xeon D-2798NT targets network appliances and edge systems with 20 cores and 40 threads. Sunny Cove cores run 2.1 GHz base with up to 3.1 GHz turbo, backed by 30 MB of Intel Smart Cache. The 125 W rating sets board cooling and power delivery.

Memory support covers DDR4-3200, 4 channels, up to 1 TB, ECC supported. Four channels feed packet buffers and virtualised network functions, and ECC corrects single-bit errors during continuous duty. Thirty-two Gen4 lanes from the SoC serve NICs and NVMe on dense appliance boards. The Socket vs chipset: what decides whether a CPU works guide covers board wiring for network systems.

The 2798NT suffix marks this chip for the network-optimised NT SKUs with higher base clocks for packet work. Makers validate it on specific appliance boards, so the board CPU list names the exact suffix. Builders who need more cores on the same package use Intel Xeon D-2899NT, while fewer cores cut power for small edge nodes.

Socket and motherboard compatibility

The D-2798NT fits BGA 2579 on single socket network or edge boards with soldered retention. The chip is soldered and cannot be replaced. Board lists must name the exact suffix for qualification.

There is no multi-socket option and no socketed variant. Memory channels, NIC wiring and expansion follow the appliance design, not a retail motherboard list. Larger boards on BGA 2579 serve dense appliances, while BGA 2227 serves compact edge nodes.

Memory, PCIe and cooling

DDR4-3200, 4 channels, up to 1 TB, ECC supported. Matched DIMMs hold the rated speed across all populated channels.

PCIe Gen4 lanes from the SoC wire high-speed NICs and NVMe, 32 lanes for dense appliances. PCH Gen3 lanes serve board devices behind them.

Cooling belongs to the appliance maker across the 125 W band with front-to-back airflow. No boxed cooler exists. Paste service follows the maker manual for the large soldered package.

Single socket platform

Every Xeon D in this stack runs single socket only with no interconnect links between processors. The Intel Xeon D-2798NT pairs 20 cores and 40 threads with 4 channels of DDR4 ECC memory on one board, so throughput scales with clocks and channels rather than with socket count. Appliance makers validate the exact suffix on their board and firmware before volume orders.

Thirty-two Gen4 lanes from the SoC wire high-speed NICs and NVMe storage, with PCH Gen3 lanes behind them for board devices. The 125 W rating of this SKU decides heatsink size and airflow direction in the appliance chassis. Because the chip solders down, core count, memory size and TDP are chosen once at order time for the life of the box.

Upgrade paths

On BGA 2579 the moves run along core count within the same board class, up to flagships such as Intel Xeon D-2899NT where validated. Core growth needs no board change when the maker lists the part.

Beyond the series the replacement is a whole appliance on newer platforms. The LGA, PGA and BGA: CPU package types explained guide explains when a platform change pays off.