Intel P35

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Intel P35 Express
CPU supportedCore 2 (Quad, Duo, Extreme)
Dual-Core Pentium
Celeron (Core architecture)
Socket supportedLGA 775
Fabrication process90 nm[1]
TDP16 W[2]
Southbridge(s)ICH9 or ICH9R
Release date(s)June 2007
SuccessorP45 (Eaglelake)

The P35 Express (codenamed Bearlake[3]) is a mainstream desktop computer chipset from Intel released in June 2007, although motherboards featuring the chipset were available a month earlier.[4] The P35 Express chipset supports Intel's LGA 775 socket and Core 2 Duo and Quad processors, and is also known to support 45 nm Wolfdale/Yorkfield dual and quad core CPUs. Theoretically, Intel also dropped support for Intel's Pentium 4 and Pentium D processors with this chipset[5] although late Pentium 4 processors, including both the 32-bit-only (5x0) and the 32-bit/64-bit (5x1), and a few others, were fully supported.

It is notable for providing the first commodity support of DDR3 SDRAM. (It also supports DDR2 SDRAM; the choice is made by the motherboard manufacturer, and some manufacturers supported both DDR3 and DDR2 on the same motherboard, but only one memory type at a time, often 4× DDR2 or 2× DDR3, as in the Gigabyte GA-EP35C-DS3L/R; but DDR3-only models, such as the Gigabyte GA-EP35T-DS3L/R and the DDR2-only models, such as the Gigabyte GA-EP35-DS3L/R were also made, concurrently.) Another notable point is that it does not provide Parallel ATA support; most 2007 motherboards added PATA support via a JMicron JMB361 or JMB363 chip.


  • 1333/1066/800 MT/s front-side bus (FSB)
  • PCI Express 1.1
    • Up to ×16 interface with 8 GB/s total bandwidth (4GBps down, 4GBps up).
    • Some motherboards support Crossfire. No SLI support.
  • Intel Fast Memory Access
    • Updated Memory Controller Hub (MCH) to increase performance and reduce latency.
  • Dual-channel DDR2 memory
    • Up to 12.8 GB/s bandwidth and 8 GB addressable memory.
  • Dual-channel DDR3 memory
    • Up to 17 GB/s bandwidth and 8 GB addressable memory.
  • Intel Flex Memory Technology
    • Allows different memory sizes in dual-channel mode.
  • Intel High Definition Audio
  • Intel Matrix Storage Technology
  • Intel Rapid Recover Technology
  • Intel Turbo Memory
  • SATA 3 Gbit/s
  • eSATA/Port Multiplier (Hot-plug and Port Multiplier is a BIOS option which few motherboards actually support)
  • SATA Port Disable
    • Allows disabling/enabling of individual SATA and eSATA ports for enhanced security.
  • USB Port Disable
    • Allows disabling/enabling of individual USB ports for enhanced security.
  • Intel Quiet System Technology
    • Automated system fan speed control.

See also[edit]


  1. ^ "Intel talks P45, G45 and X48". March 7, 2008. Retrieved 2008-03-25.
  2. ^ "Thermal and Mechanical Design Guidelines" (PDF). Intel. October 2007. Retrieved 2008-03-25.
  3. ^ "Intel Introduces '3-Series' Chipsets at Computex" (Press release). Intel. June 5, 2007. Retrieved 2007-10-23.
  4. ^ "Gigabyte to release eight P35 motherboards". BeHardware. May 9, 2007. Retrieved 2008-03-25.
  5. ^ "The 3-Series Chipset Family". Tom's Hardware Guide. Retrieved 2008-07-10.

External links[edit]