Intel Celeron D 335 socket: Socket 478

What the Celeron D 335 is

The Intel Celeron D 335 is a 2.8 GHz single-core value processor from June 2004. It runs one NetBurst Prescott core at 2.8 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 a Socket 478 package. A duplicate cpu_list row repeats the same 335 spec, so one page covers both entries.

The 335 uses a 533 MT/s front side bus with a 21x multiplier. Intel sold Socket 478 and LGA 775 versions at the same 2.8 GHz and 256 KB rating, with an LGA 775 335 covered by a different package on land grid boards. This page covers the Socket 478 pin grid version. The chip supports MMX, SSE, SSE2 and SSE3. Later 335J steppings add Execute Disable support where listed.

Socket choice decides the board. The Socket 478 335 suits late DDR towers that stayed on pin grid mounts, while the LGA 775 335 suits land grid towers with PCIe graphics. Clocks and cache match across the two packages, so the mounting and chipset decide which version to order.

Socket and motherboard compatibility

The Celeron D 335 Socket 478 fits Socket 478 value desktops with DDR memory, a 533 MT/s bus and Prescott Celeron BIOS support. It needs a 478-pin board, not an LGA 775 board. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.

Late DDR towers with AGP graphics are the natural match. Intel 865 chipsets with 533 MT/s support accept the chip with an 84 W Socket 478 cooler on the 60 mm by 75 mm bracket. LGA 775 Celeron D 335 parts need land grid boards instead.

Memory, PCIe and cooling

Memory is DDR through the board chipset. The board sets speed and capacity, since the CPU has no controller.

A 533 MT/s bus ties the CPU to the chipset, while AGP handles graphics and PCI handles other cards. No PCIe lanes originate on the die. Cooling uses the Socket 478 bracket with an 84 W heatsink. Fresh paste and normal airflow suit the value envelope.

Upgrade paths

On Socket 478 the 335 tops the pin grid Celeron D line with the 340 at 2.93 GHz as a nearby step where listed. LGA 775 Celeron D 340 and 341 parts offer land grid successors with new boards. Pentium 4 2.80A Prescott parts add 1 MB of cache on the same socket. The 335 lifts with the lever, so swaps need no solder work.