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Green ATX motherboard with silver LGA 775 socket and four DDR3 slots

ASUS

ASUS P5Q3 Intel P45 LGA 775 DDR3 16GB ATX motherboard

SKU CH-2JFM-Y2VAV

LGA 775 ATX motherboard with Intel P45 chipset supports DDR3 memory up to 16GB

  • CPU socketLGA 775
  • ChipsetIntel P45
  • Max supported RAM16 GB
  • Supports up to 16 GB DDR3 memory for multitasking headroom
  • Intel P45 chipset provides stable Core 2 Duo and Quad platform
  • LGA 775 socket fits a wide range of existing processors
  • ATX form factor fits standard desktop cases and power supplies
  • Includes SATA cable and I/O shield for immediate installation

Socket LGA 775 DDR3 board

The ASUS P5Q3 is an ATX motherboard built around the Intel P45 chipset for LGA 775 processors. It supports DDR3 memory up to 16GB total capacity. This board suits owners of existing Core 2 systems who need a replacement or a fresh foundation for legacy software. Builders starting a new modern platform cannot use this socket or memory type.

Intel P45 chipset decides compatibility

The single specification that determines fit is the Intel P45 chipset paired with the LGA 775 socket. Only processors designed for that socket and chipset will operate on this board. Memory must be DDR3 and the total installed capacity cannot exceed 16GB. Any other CPU, chipset or memory standard is physically and electrically incompatible.

Passive chipset cooling runs silent

The P45 chipset uses a passive heatsink so it adds no fan noise during normal operation. Power draw is limited to the components you install — CPU, memory and drives — because the board itself has no active cooling to supply. Thermals depend entirely on your case airflow and the processor cooler you choose.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $123.99
Pricier than about 63% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASUS
Model nameASUS P5Q3
Processor
CPU socketLGA 775
ChipsetIntel P45
Memory
Max supported RAM16 GB

Questions about this item

How much DDR3 memory can the P5Q3 actually use once installed?

The board supports up to 16GB of DDR3 across its four slots, so a fully populated system can address that full amount.

What storage interface does the Intel P45 chipset provide and what speed limit applies?

The P45 chipset delivers SATA 3 Gb/s ports, capping each drive at that throughput.

Will this ATX board fit in a standard mid-tower case and align with the I/O shield?

Yes, the ATX form factor matches standard mounting holes and the included back-panel shield lines up with the case cut-out.

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