Intel Pentium 4 519 socket: LGA 775

What the Pentium 4 519 is

The Intel Pentium 4 519 is a 3.06 GHz single-core desktop processor from December 2004. It runs one NetBurst Prescott core at 3.06 GHz with no Hyper-Threading on this rating, so 1 core gives 1 thread. Cache is 1 MB of L2 on a 90 nm process. Power is rated at 84 W in an LGA 775 package with part number JM80547PE0831M. J and K revisions add Execute Disable and 64-bit support where listed.

The 519 uses a 533 MT/s front side bus with a 23x multiplier at 1.25 V to 1.388 V. Intel placed it as the top 533 MT/s Pentium 4 on LGA 775 with 1 MB of cache, above the 2.93 GHz 515. The chip supports MMX, SSE, SSE2 and SSE3. A 519J shares clocks with Execute Disable support, while a 519K adds 64-bit operation, so suffixes separate feature flags at identical frequency.

High clocks on a slow bus define the trade. The 23x multiplier lifts frequency without lifting memory bandwidth, so cache size matters more than on 800 MT/s parts. That is why the 1 MB L2 helps the 519 hold responsiveness in office tasks despite the 533 MT/s link.

Socket and motherboard compatibility

The Pentium 4 519 fits LGA 775 desktops with a 533 MT/s bus and Prescott BIOS support. It needs a land grid board with 533 MT/s chipset paths. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

DDR towers with 533 MT/s chipsets are the natural match. Boards listing the 519 accept the chip with an 84 W cooler. J and K revisions need BIOS paths for Execute Disable and 64-bit operation where those features are wanted.

Memory, PCIe and cooling

Memory is DDR or DDR2 through the board chipset. The board sets speed and capacity.

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 uses the LGA 775 plate with an 84 W heatsink. Normal airflow suits the envelope with fresh paste.

Upgrade paths

On LGA 775 the 519 tops the 533 MT/s Pentium 4 line, so same bus upgrades stop here. Pentium 4 524 parts at 3.06 GHz move to an 800 MT/s bus with Hyper-Threading as the next step with a new chipset path. Celeron D 346 parts at the same 3.06 GHz offer a value alternative with 256 KB. The 519 lifts with the load plate, so swaps need no solder work.