Intel Core Solo T1300 socket: Socket M

What the Core Solo T1300 is

The Intel Core Solo T1300 is a 1.66 GHz mobile single core from January 2006. It runs one Yonah core at a fixed 1.66 GHz through a 10x multiplier on a 667 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 27 W.

The T1300 belonged to the first Yonah wave for Napa notebooks, launching beside dual core parts in January 2006. It gave buyers a single core choice at lower draw than the 31 W dual core options, which suited machines built for office travel rather than multitasking. The 667 MT/s bus kept it level with faster siblings on memory transfers despite the single core.

Yonah is a 32-bit line, and 64-bit support arrived only with the Merom parts that later shared this socket. The T1300 therefore fits period operating systems and applications from early 2006. Its fixed clock and locked multiplier keep the clock curve identical across boards whose BIOS lists the exact sSpec.

Socket and motherboard compatibility

The socketed T1300 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 the board BIOS must list the exact sSpec before a given stepping boots. Napa BIOS revisions set the supported list, so the vendor CPU support page decides a swap.

The T1300 shipped both as a socketed Micro-FCPGA part for Socket M and as a soldered Micro-FCBGA part. Only the Micro-FCPGA package fits the lever socket, while the soldered variant belongs to Socket 479 boards and cannot be socketed later. 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. A 667 MT/s Yonah pairs with DDR2-667 SO-DIMMs on most Napa boards, 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 667 MT/s between the CPU and the mobile chipset. No PCIe lanes come from the T1300 itself, while board graphics and expansion slots hang off the chipset at speeds the board maker sets. Chipset graphics cover office display needs where no discrete mobile GPU is fitted.

Cooling is the notebook vendor heat pipe assembly for the exact chassis, sized for the 27 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 step up from a T1300 is the Core Solo T1400 at 1.83 GHz for buyers staying with one core, or a Core Duo such as the T2500 at 2.0 GHz and the T2600 at 2.17 GHz for a move to two cores. Each keeps the 667 MT/s bus, and the dual core options step up to a 31 W envelope. 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 T5600 at 1.83 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.