Intel Mobile Pentium 4 HT 3.06 socket: Socket 478

What the Mobile Pentium 4 HT 3.06 is

The Intel Mobile Pentium 4 HT 3.06 is a 3.06 GHz single-core mobile processor with Hyper-Threading from September 2003. It runs one NetBurst Northwood core at 3.06 GHz with no turbo, so 1 core gives 2 threads. Cache is 512 KB of L2 on a 130 nm process. Power is rated at 70 W in a Socket 478 package. 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 3.06 HT uses a 533 MT/s front side bus with a 23x multiplier. Intel sold it at 433 dollars in September 2003. The chip supports MMX, SSE and SSE2 with Hyper-Threading. Mobile Pentium 4 3.06 parts at the same clocks offer a single thread without Hyper-Threading, so threads separate otherwise identical ratings.

Flagship mobile clocks with threads suited large notebooks for media encoding on the road. The 70 W envelope needs a top desktop-replacement heat pipe with loud fans under load. That is why the HT 3.06 cost more than the non-HT 3.06 despite sharing cache.

Socket and motherboard compatibility

The Mobile HT 3.06 fits Socket 478 desktop-replacement notebooks with mobile HT support. It needs a notebook Socket 478 board qualified for top mobile clocks. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Flagship large notebooks are the natural match. Maker lists decide fit by threads.

Memory, PCIe and cooling

Memory is DDR through the board chipset with notebook slots. 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 flagship notebook heat pipe for 70 W operation.

Upgrade paths

On Socket 478 the step is the Mobile HT 3.20 part. Non-HT 3.06 mobiles offer the same clocks without threads. Pentium M parts on Socket 479 offer thin paths. The 3.06 removes with the socket mechanism, so swaps need no solder work.