Intel Pentium M 1.30 socket: Socket 479

What the Pentium M 1.30 is

The Intel Pentium M 1.30 is a 1300 MHz single-core mobile processor from March 2003. It runs one P6 Banias core at 1300 MHz with no turbo, so 1 core gives 1 thread. Cache is 1 MB of L2 with 64 KB of L1 on a 130 nm process with 77 million transistors. Power is rated at 22 W in a Socket 479 micro FCPGA package on a 400 MT/s front side bus with a 13x multiplier at 0.956 V to 1.388 V.

Banias returns to P6 concepts with a large 1 MB cache and Enhanced SpeedStep, which is why the 1.30 at 1300 MHz runs office software smoothly in thin laptops where Pentium 4 M parts at higher clocks overheat. Intel launched the 1.30 on March 12, 2003 with the 1.40, 1.50 and 1.60 Banias parts. The chip supports MMX, SSE, SSE2 and Enhanced SpeedStep.

Low clocks with a large cache and a 22 W envelope suit early Centrino laptops with DDR memory and chipset graphics. The wide voltage range lets the chip drop to 600 MHz at idle. That is why the 1.30 shipped in thin business laptops with long battery targets.

Socket and motherboard compatibility

The 1.30 fits Socket 479 Centrino laptops with Banias support. It needs a 479-pin board with a 400 MT/s bus and a BIOS that lists Pentium M 1.30. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Early DDR laptops with 855 chipset paths are the natural match. Boards listing Pentium M 1.30 accept the chip with a 22 W heat pipe assembly. Desktop Socket 478 boards cannot accept the mobile package directly, save for rare CT-479 adapter boards with special BIOS support.

Memory, PCIe and cooling

Memory is DDR through the board chipset, matched to the board slots. The CPU has no memory controller, so the chipset sets the type and speed. Early 855 boards commonly run DDR266 pairs for 400 MT/s Banias parts.

A 400 MT/s front side bus ties the CPU to the chipset, while AGP and PCI hang off the chipset. No PCIe lanes originate on the die. Cooling uses the laptop heat pipe assembly for the exact chassis, rated for 22 W. Replacement pipes and fans come from the laptop maker for the exact model.

Upgrade paths

On the same socket, a move to a Pentium M 1.60 such as Intel Pentium M 1.60 keeps the laptop and memory when the support list names it. The 1.60 adds 300 MHz at 24.5 W, so the pipe must cover the higher envelope and the BIOS must include the faster string. A Pentium M 1.40 on the same list adds 100 MHz at the same 22 W.

A move to Dothan Pentium M needs a board with 2 MB cache support and a BIOS update. The Socket 479 page lists the Banias to Dothan range for planning. Note: the queue rows for these parts list Socket 478; this page uses the verified Socket 479 package.