Intel Celeron D 330 socket: LGA 775

What the Celeron D 330 is

The Intel Celeron D 330 is a 2.667 GHz single-core value processor from June 2004. It runs one NetBurst Prescott core at 2.667 GHz with no Hyper-Threading, so 1 core gives 1 thread. Cache is 256 KB of L2 on a 90 nm process. Power is rated at 84 W in an LGA 775 package.

The 330 steps above the 2.53 GHz 325 and 326 with the same 256 KB cache, using a 533 MT/s front side bus with a 20x multiplier. Intel sold Socket 478 and LGA 775 versions at the same clocks, with the LGA 775 version covered here. The chip supports MMX, SSE, SSE2 and SSE3. A Celeron D 330J adds Execute Disable support where listed, which is the main feature split inside the same number.

Value positioning explains the 84 W rating against 73 W on slower Celeron D parts. Higher clocks at the same 90 nm process need more current, so the cooler class rises one step. That is why boards qualified for 73 W Celeron D parts need a thermal check before fitting the 84 W 330.

Socket and motherboard compatibility

The Celeron D 330 LGA 775 fits LGA 775 value desktops with a 533 MT/s bus and Prescott Celeron support. It needs a land grid board, not a Socket 478 board. 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 325 normally accept the 330 with a BIOS update and an 84 W cooler. Socket 478 Celeron D 330 parts need pin grid boards instead.

Memory, PCIe and cooling

Memory is DDR or DDR2 through the board chipset. The board sets channel mode and capacity, since 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 uses the LGA 775 plate with an 84 W heatsink. Normal airflow suits the value envelope with fresh paste.

Upgrade paths

On LGA 775 the steps are the Celeron D 335 at 2.8 GHz and the 340 at 2.93 GHz with the same cache. Pentium 4 505 parts add threads and 1 MB of cache as a larger lift. Beyond NetBurst a move to Core Celeron parts needs new chipset support. The 330 lifts with the load plate, so swaps need no solder work.