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Thread: Good bye ATX - BTX form factor is coming




  1. #1
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    <center><img src="http://images.tweaktown.com/news/news_btx-layout.gif">

    Good bye ATX - BTX form factor is coming</center>

    The new BTX form factor specification gives developers options to balance thermal management, acoustics, system performance, and size in the system form factors and stylish designs that are desired in today's products. The BTX form factor is a clear break from previous ATX form factor layouts and was developed with emerging technologies such as Serial ATA, USB 2.0, and PCI Express* in mind. In addition to smaller than microATX system sizes, BTX also was designed to scale up to tower size systems using the same core layout by increasing the number of system slots included.

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    You don't need a new case for SATA and USB 2.0, which have been around for a while...pretty much all new boards come with that...the only possibility is PCI Express....

    So what's different about it?

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    Soulburner: Probably simpler if you look over the BTX specifications for your yourself, rather than me try to explain them.

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    Soulburner: Anand has posted a great article on the BTX form factor, well worth a read.

    BTX - The Basics
    Just in case you were told otherwise, the BTX form factor is largely incompatible with the ATX form factor - the only area where this doesn't fully apply is in power supply support, as you can use ATX power supplies with BTX motherboards (more on this later).

    AnandTech

    BTX form factor explained

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    <center>Intel BTX motherboard plans revealed</center>

    With most lucky hacks shipped out of San Jose to destinations far and wide, Intel seized on the opportunity to hold a roadmap update session in rooms tucked right round the back of the Convention Centre here.
    Still, one lonesome INQUIRER had nothing better to do and found the signposts pointing towards the sessions a little too enticing to avoid.

    On show at the session was an early BTX motherboard design. The BTX design is smaller than an ATX with an "improved physical layout" which is "better able to address thermal concerns," Intel desktop spokesman Kerry Krause told the gathering of system builders and manufacturers. It’ll tip up mid 2004.

    The boards sport an in-line airflow, the session was told. The ATX design caused "some cavitation and noise," Krause said. The BTX, on the other hand, has a single large fan that draws the in-bound air across the core of the motherboard. The air flows over the voltage regulator right away, with memory, processor and other components all inline to receive the cooling airflow. In fact, Intel says the design is so successful that the reference design has a passive heatsink on the processor.

    The design allows for some cost reduction by reducing the number of necessary fans in boxes sporting the board – though the boards won’t, of course, be cheaper right from launch, Krause said.

    BTX boards will appear in three form factors, from small 7-10 litre box designs, sporting a single expansion slot up to a full tower size with seven expansion slots. Between these sits a 4-slot implementation of the board.

    The larger designs will still use today’s ATX power supplies but the boards designed for smaller systems will need new powers supplies.

    Intel says it will build BTX boards for the upcoming Prescott processor and the future Tejas chip. The boards will sport the Grantsdale chipset. We can expect to see boards available from "Q2, 2004" with a full ramp through 2004 and 2005, Krause said.

    The Inquirer

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    wow! I think that will help cooling quite a bit, with everything being arrnaged better!

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    Yep, looks a WHOLE lot like ducting mods I've seen. It always has seemed that the CPU was in an awkward spot for cooling with the ATX form-factor, but I also see a lot of restrictions with the new design. A big plastic box inside your case???:confused:
    My prediction: First mod available will be Plexi ducts in clear and UV :thumb: :cheers:
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    Hopefully, the case manufacturers will produce cases with 120mm fans soon after the standard is released. :idea:
    I've become a big fan (no pun intended :p) of 120mm case fans as they move more air while producing less noise. :2cents:

    We know that Intel is pushing this new BTX format, but is AMD going along for the ride as well ? :group:

    Originally posted by [b]Wordbiker
    My prediction: First mod available will be Plexi ducts in clear and UV
    That would be sweet ! :woot:
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    If the industry goes with it, AMD will have to...although since they aren't actually making retail motherboards, I can't see this affecting them as much. Intel is still a much larger company than AMD, and will have more influence on stuff like this.

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    Well one thing I like about the design is that it gets the CPU away from the PSU. That's one thing that has always bothered me about ATX boards. Plus the BTX design puts the CPU right in the middle of the flow path of your case fans.

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