Intel Core Solo T1350 socket: Socket M

What the Core Solo T1350 is

The Intel Core Solo T1350 is a 1.87 GHz mobile single core from July 2006. It runs one Yonah core at a fixed 1.87 GHz through a 14x multiplier on a 533 MT/s bus, so 1 core gives 1 thread with no turbo step. Cache is 2 MB of shared L2 on a 65 nm process. Power is rated at 31 W.

The T1350 is the odd Solo of the Yonah set, pairing the highest single core clock with the slower 533 MT/s bus. The tall multiplier lifts the core speed while the bus trims transfer bandwidth beside 667 MT/s siblings. That trade suited buyers who valued single thread clock speed over bus throughput in mid 2006 Napa machines.

Yonah is a 32-bit line, with 64-bit support arriving only on the Merom parts that later shared this socket. The T1350 therefore fits period operating systems from 2006. Its locked multiplier fixes the 14x ratio on every board whose BIOS lists the exact sSpec.

Socket and motherboard compatibility

The T1350 fits the Socket M lever socket (Socket M) on Napa boards with the 945PM or 945GM chipset. The 478-contact Micro-FCPGA package seats with zero insertion force and locks under the screw lever. The board BIOS must list the exact sSpec, since Napa revisions set which steppings boot, and the board must support the 533 MT/s bus speed.

This page covers the socketed Micro-FCPGA package. Soldered low voltage Yonah parts such as the Core Duo L2400 shipped as Micro-FCBGA for Socket 479 boards instead, and those chips cannot move to Socket M. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules for socketed mobile parts.

Memory, PCIe and cooling

Memory is DDR2 through the board chipset in two channels. DDR2-533 SO-DIMMs match the 533 MT/s bus of the T1350, and the board fixes the slot count plus the maximum capacity. The notebook vendor list sets the tested module size for the exact model.

The front side bus runs at 533 MT/s between the CPU and the mobile chipset. No PCIe lanes come from the T1350 itself, while board graphics and expansion slots hang off the chipset. The slower bus shows most clearly in sustained transfers rather than in single thread office work.

Cooling is the notebook vendor heat pipe assembly for the exact chassis, sized for the 31 W envelope with a side vent. Retail desktop towers do not mount to mobile sockets, so the fan and pad set must come from the notebook maker. Paste or pad replacement follows the service manual for the exact model.

Upgrade paths

On Socket M the move from a T1350 is a 667 MT/s part such as the Core Solo T1400 at 1.83 GHz for one core, or a Core Duo such as the T2400 at 1.83 GHz and the T2500 at 2.0 GHz for two cores. The board must support the 667 MT/s bus speed, which most Napa boards do. A swap must stay within the thermal design the chassis was qualified for, and the BIOS must list the new sSpec.

A larger step is a Merom Core 2 Duo such as the T5500 at 1.66 GHz on the same Socket M, which adds 64-bit support with 2 MB of L2 cache. Napa boards need a Merom aware BIOS revision for those parts. Past Merom the path leaves the socket for a Socket P Santa Rosa board, as described in the Socket vs chipset: what decides whether a CPU works guide.