Intel Atom E625CT socket: BGA 1466

What the Atom E625CT is

The Intel Atom E625CT is the 600 MHz member of the Atom E600C Stellarton embedded stack on BGA 1466. It runs one Bonnell core with Hyper-Threading for two threads at 600 MHz with no turbo, backed by 512 KB of L2 cache and no L3 cache. Power is rated at 2.7 W on a 45 nm process in the FC-BGA 1466 package. Intel lists November 22, 2010 as the launch date with industrial temperature range of minus 40 to 85 C.

One core with two threads suits fanless gateways, kiosks, HMIs and in-vehicle terminals where a few watts matter more than speed. The CT suffix marks the industrial range part, while the E625C is the commercial 0 to 70 C version at the same clocks and power. GMA600 graphics at 320 MHz cover basic displays without a discrete card.

Memory is single-channel DDR2 up to DDR2-800 with up to 2 GB fixed per board. The SoC also carries 4 lanes of PCIe 1.0a, USB, LVDS and serial DVO outputs with HD audio for terminal designs.

Socket and motherboard compatibility

The Atom E625CT is soldered to the board in BGA 1466 and cannot be replaced. There are no pins to bend and no lever to lift, but there is also no CPU upgrade path. Board replacement is the only path to more performance, so choose clock and temperature range at design time.

Compatibility still depends on firmware, so a board revision needs a BIOS that knows the Stellarton stepping. The CPU cooler compatibility by socket guide covers soldered rules in general terms.

Memory, PCIe and cooling

Memory on this SKU is single-channel DDR2 up to DDR2-800 with up to 2 GB. The board fixes the memory type and size, so check the vendor list before committing. ECC is not part of this SKU.

Expansion comes from 4 lanes of PCIe 1.0a plus USB and display outputs. The lanes usually split between boot storage and wired networking. Boards that need more than the SoC offers cannot add lanes, so the block diagram of the exact board decides real expansion.

Cooling has no retail answer on BGA 1466. The 2.7 W envelope suits passive spreaders in sealed cabinets, and mounting pressure follows the board maker specification. The industrial CT rating to 85 C suits outdoor and cabinet builds with careful airflow.

Upgrade paths

There is no CPU upgrade path on BGA 1466 because the chip is soldered. A move to more performance means a new board, either a faster Stellarton such as the 1.3 GHz E665CT in the same package where the vendor offers it, or a later Atom platform with more cores and DDR3 memory.

Keep the E625CT where a 600 MHz dual threaded core with GMA600 covers the terminal workload. Change boards where networking or display needs exceed 4 lanes of Gen 1 and DDR2 with 2 GB.