The Intel P35 Express Northbridge chipset replaces the P965 Express as Intel's mainstream performance core logic part. The P35 Express not only supports all current Socket 775 processors running on a 533/800/1066 MHz Front Side bus, it also supports Intel's 45nm "Penryn" processor and 1333 MHz FSB processors. The P35 Express ships with the ICH9 series of Southbridge chipsets.

An increased Front Side Bus, from 1066MHz to 1333 MHz speeds up data communication to the necessary levels. Intel also modified the memory controller, boosting memory to 1066 MHz from 800 MHz. That increases maximum theoretical bandwidth to 16GB/s (in a dual channel configuration). The Intel P35 Express supports a maximum of 8GB of non ECC unbuffered memory, either DDR3 or DDR2, depending on what the manufacturer has chosen to implement. With the Asus BLITZ Extreme, the motherboard uses DDR3 memory.

Here's a quick look at how the new P35 stacks up to the P965 Express and 975X chipsets. Apart from the speed increases and new memory standard, there are just a few extra ports here and there.

Intel P35 & 975 / 965 Series Chipset Feature Breakdown Intel 975X Express Intel P35 Express Express Intel P965 Express Intel G965 Express CPU LGA775 Core 2 Duo LGA775 Core 2 Duo LGA775 Core 2 Duo LGA775 Core 2 Duo Front Side Bus (FSB) 1066/800 MHz 1333/1066/800 MHz 1066/800/533 MHz 1066/800/533 MHz Intel Flex Memory Technology Yes Yes Yes Yes Dual Channel Memory Support DDR2 800/667/533 DDR2 1066/800/667 or DDR3 1333/1066/800 DDR2 800/667/533 DDR2 667 Maximum Memory Capacity 8GB 8GB 8GB 8GB Integrated Graphics - - - GMA 3000 PCI Express x16 2 1 1 1 PCI Express x1 4 6 4 4 Intel Matrix Storage Technology Yes Yes Yes Yes SATA/IDE HDD 4/1 6/0 6/0 6/0 SATA Speed 3Gb/s 3Gb/s 3Gb/s 3Gb/s RAID 0, 1, 5, 10 (with ICH7R) 0, 1, 5, 10 (with ICH9R) 0, 1, 5, 10 (with ICH8R) 0, 1, 5, 10 (with ICH8R) Hard Drive NCQ - Yes Yes Yes USB 2.0 Ports 8 12 8 10 PCI Masters 6 6 6 6 Audio High Definition Audio (Azalia) High Definition Audio (Azalia) High Definition Audio (Azalia) High Definition Audio (Azalia)

By default the Intel P35 Express chipset supports a single PCI Express x16 slot running at PCIe x16 mode for videocard. There are six PCI Express lanes associated with the ICH9R Southbridge. Between the Intel P35 Express Express Northbridge and ICH9R Southbridge is a dedicated 2GB/s I/O bus. Asus get around this by splitting the 16 PCI Express lanes for the primary videocard into two PCIe x8 paths.

Next up, overclocking the Asus BLITZ Extreme motherboard!