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Home » Motherboard
P35 Series from Gigabyte
Author: Gabriel Torres 67,951 views
Type: First Look Last Updated: May 1, 2007
Page: 1 of 3

P35 (codename ”Bearlake“) is the next Intel chipset family that will be launched on June 4th. The main new features include support for DDR3 memories, a new south bridge chip, ICH9, and support for 1,333 MHz external bus. All major motherboard manufacturers will be launching P35-based motherboards on that date, and today we could take a look at the main P35-based products that Gigabyte will be releasing then. Check it out!

The P35 version with integrated graphics is called G33, having the same features as P35 except, of course, the addition of a new graphics engine, now based on DirectX 10 (Shader 4.0).

P35 and G33 chipsets support both DDR2 (officially up to DDR2-800) and DDR3 (officially up to DDR3-1066) memories. Since DDR3 memories will probably take at least one year to become a mainstream product, all board manufacturers will be launching products based solely on DDR2 or with both DDR2 and DDR3 sockets.

Another important ”feature“ of P35 and G33 chipsets is that they do not support floppy disk drives or standard (parallel) IDE devices. To solve this problem, all models from Gigabyte have one floppy disk drive port and one parallel IDE port, controlled by an external chip.

All motherboards that Gigabyte showed us have the same basic specs. They all support up to 8 GB of DDR2 memory or 4 GB of DDR3 memory (on the models that have DDR3 sockets), they are all based on ICH9R south bridge, which has six SATA-300 ports supporting RAID 0, 1, 5 and 10 (RAID10 is a new thing for Intel chipsets), have all Japanese solid aluminum capacitors (some motherboards we’ve seen in the past with solid capacitors were using regular electrolytic caps on some parts of the board – especially on the sound section), have a high-end audio codec (Realtek ALC889A, with a 106 dB signal-to-noise ratio), have an improved voltage regulator using high-end components (Gigabyte calls this feature ”Ultra Durable 2“) and three FireWire ports. It is interesting to note that these features will be available even on the low-end model based on G33 chipset.

Gigabyte P35
click to enlarge
Figure 1: High-end components on the voltage regulator.

In Figure 1, you can see the high-end components on the voltage regulator section of one of the motherboards, besides the Japanese aluminum solid capacitors you can see that the coils (chokes) and MOSFET transistors are different. The coils have a ferrite core instead of using an iron core. According to Gigabyte ferrite coils have 25% lower power loss compared to iron coils. The MOSFET transistors are smaller using a different technology (see how they don’t have the traditional heatsink on their back) that according to Gigabyte have a working temperature 16% lower than traditional MOSFET transistors.

In Figure 2, you can see the Realtek ALC889A audio codec used by all motherboards on Gigabyte P35 series. It features a 106 dB signal-to-noise ratio, 7.1+2 channels (translation: besides the 8-channel surround sound, it features an extra stereo channel, usually used for audio streaming) and DTS Connect compatibility (i.e., Blu-Ray and HD-DVD audio compatibility). What is very important to note on this picture is the use of Japanese solid aluminum capacitors on this section even for the small capacitors. Usually motherboards that have solid aluminum capacitors continue to use regular electrolytic capacitors for the smaller caps, which doesn’t happen with this motherboard series.

Gigabyte P35
click to enlarge
Figure 2: Realtek ALC889A audio codec and Japanese aluminum solid capacitors.

Let’s now talk about the specific models that Gigabyte showed us.

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