Intel Mobile Pentium 4 HT 532 socket: Socket 478

What the Mobile Pentium 4 HT 532 is

The Intel Mobile Pentium 4 HT 532 is a 3.06 GHz single-core mobile processor with Hyper-Threading from June 2004. It runs one NetBurst Prescott core at 3.06 GHz with no turbo, so 1 core gives 2 threads. Cache is 1 MB of L2 on a 90 nm process. Power is rated at 88 W in a Socket 478 package with part numbers RK80546HE0831M. The cpu_list 3.067 GHz value matches the table 3.06 GHz after rounding, and the table value is used here with the cpu_list precision kept in the quick field.

The 532 uses a 533 MT/s front side bus with a 23x multiplier at 1.25 V to 1.40 V. Intel sold it at 234 dollars in June 2004. The chip supports MMX, SSE, SSE2 and SSE3 with Hyper-Threading. Desktop Pentium 4 HT 3.06 parts at the same clocks offer tower operation, so the mobile 532 is the notebook twin with mobile power tables.

High mobile clocks need a large chassis. The 88 W envelope at 3.06 GHz requires a desktop-replacement body with a thick heat pipe and loud fans under load. That is why the 532 suited road warriors who needed tower clocks with a notebook screen, rather than frequent flyers with thin bodies.

Socket and motherboard compatibility

The Mobile 532 fits Socket 478 desktop-replacement notebooks with a 533 MT/s bus and mobile Prescott HT support. It needs a notebook Socket 478 board, not a Socket 479 Pentium M board. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Large DDR notebooks are the natural match. The maker qualifies the 532 for the 88 W heat pipe, so only listed models run with full power management. Thin Pentium M notebooks need Socket 479 instead.

Memory, PCIe and cooling

Memory is DDR through the board chipset with SO-DIMM slots fixed by the notebook. The CPU has no controller.

A 533 MT/s bus ties the CPU to the chipset, while graphics hangs off the chipset. No PCIe lanes originate on the die. Cooling is the notebook 88 W heat pipe assembly with aggressive fan curves. Regular cleaning keeps the narrow notebook vents clear.

Upgrade paths

On Socket 478 the steps are the Mobile Pentium 4 HT 538 at 3.2 GHz and the 548 at 3.33 GHz where listed. Desktop 3.06 GHz Northwood parts offer tower alternatives. Pentium M 725 parts on Socket 479 offer low power paths for thin bodies. The 532 removes with the socket mechanism, so swaps need no solder work.