Intel Core 3 305 socket: BGA 1516

What the Core 3 305 is

The Intel Core 3 305 is a 6-core, 6-thread processor that Intel launched in April 2026 in the Core 3 range of Core Series 3, the family codenamed Wildcat Lake. Its two Cougar Cove Performance-cores run at 1.5 GHz and reach up to 4.3 GHz, while four Darkmont low-power Efficient-cores handle parallel and background work at 1.4 GHz and up to 3.3 GHz. The six cores share 6 MB of Intel Smart Cache with one thread per core, giving six threads.

Graphics use a single Xe3 core with 16 execution units at up to 2.3 GHz and 9 TOPS of Int8 throughput, which covers office displays, video playback and industrial HMIs. Unlike its six siblings, the 305 carries no NPU section in its ARK specification page, so buyers planning on-device AI features should verify against the system vendor rather than assume the block is present. Intel builds the compute tile on the Intel 18A process, with 15 W of processor base power, up to 35 W of maximum turbo power, and 10 W minimum assured power.

Intel lists the 305 under its embedded vertical segment with embedded options available, which sets it apart from the Mobile listing of the other six SKUs. Board makers used it early in that role: Advantech names the 305 on the preliminary datasheet for its MIO-5356 industrial board, a 146 × 102 mm design with a single DDR5 channel that matches the single-channel controller in the silicon. Wide DC input, out-of-band management and long lifecycle support on such boards suit kiosks, gateways and edge boxes.

Against its Core 3 sibling the 305 trades clocks for cores. The 5-core 304 reaches the same 4.3 GHz peak on its single Performance-core, but the 305 adds a second one, which lifts sustained multithreaded work and keeps the interface responsive under load. Against the Core 5 315 above it, the 305 gives up 100 MHz of peak CPU speed and a graphics core, which positions it as the cheapest 6-core way into the family.

Socket and motherboard compatibility

The Core 3 305 is soldered to its board in the BGA 1516 ball grid array, so there is no socket to plug into and the chip cannot be replaced or upgraded later. The 1,516-ball joint is made once at the factory on a 35 × 25 mm FCBGA1516 package, and each laptop or industrial board is qualified around this exact SKU for its whole service life.

There is no board or chipset choice in the retail sense. The system vendor fixes the memory type and capacity, sets the power policy between the 10 W minimum assured power and the 35 W turbo ceiling, and validates the thermal design for that envelope. Thunderbolt 4 support in the silicon reaches the buyer only where the vendor wires and certifies the ports.

The BGA 1516 footprint carries all seven Wildcat Lake SKUs. A shared package does not create an upgrade path, because each SKU needs its own board build and firmware. Industrial buyers pick the 305 for its embedded listing and board availability, not for any swap potential.

Memory, PCIe and cooling

Memory is single-channel by design. The controller supports LPDDR5X up to 7467 MT/s or DDR5 up to 6400 MT/s, with up to 64 GB depending on memory type, and the fitted type and size are fixed when the board is built. Industrial boards usually fit a DDR5 slot for serviceability, while thin laptops use soldered LPDDR5X for idle power. A second channel cannot be added either way, because the limitation sits in the processor itself.

Expansion comes from six PCIe 4.0 lanes out of the processor, configurable as one by four, three by two, or six by one. Those lanes typically serve NVMe storage, network controllers and edge peripherals, while the integrated graphics drive local displays through eDP 1.5, DisplayPort 2.1 or HDMI 2.0b. The exact lane split and port list are set per system design, so the vendor specification governs.

Cooling is a system responsibility inside the 10 W to 35 W ratings. Modest clocks and a single graphics core make the 305 easy to cool, which suits sealed or fanless edge chassis with limited airflow. There is no boxed cooler and no retail heatsink list for a soldered processor.

Upgrade paths

There is no CPU upgrade path on a soldered package. When six threads at these clocks stop being enough, the in-family step is a Core 5 board with higher turbo peaks, and memory size changes mean a new board too. Edge deployments should therefore plan capacity and performance headroom before rollout.

Moving off BGA 1516 means a new platform. Higher throughput edge designs move to larger power envelopes or socketed parts with more cores. The LGA, PGA and BGA: CPU package types explained guide explains how soldered packages differ from socketed ones and why the whole board is the unit of replacement here.