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Thread: Question about DC-DC vs ATX PSU Efficiency - First Post!

  1. #11
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    Quote Originally Posted by 2k1Toaster View Post
    ...sell your desktop chip on eBay and buy a mobile chip. Sell your desktop mobo on eBay and buy one that will take the mobile chip (usually same price if not a tad higher for mobile so you spend a bit here depending on form factor).

    Then you can get a DC-DC and do it correctly...
    Thanks for the advice, I will consider it. I know there are some Turions on a 754 socket but I'm not sure how many 754 mobos like them, I'll call AMD 2moro and see. I'm not dead set on the AM2 but $140 for a board, 3800+ Athlon and 1Gb of DDR2 isn't bad, the up-side with a 754 option is that I can use the Gig of DDR I already have laying around.

    The low-watt AM2 Athalon I'm thinking about runs 45W max (compare to avg 65W+ for AM2) but the Turions are 35W max or some even 25W max. I may start leaning more in the Turion direction depending on my conversation with AMD. They're really on top of thier game and have always been ready and willing to talk and give advice in the past, gotta give'em props for that.

    Quote Originally Posted by 2k1Toaster View Post
    Also I saw in your first post you ask if the M2-ATX is "underratted". Well just to clarify, no it is most definately not. If anything overrated. I would not run more than 80% load on the M2. I use it and it works flawlessly, but with a mobile chip.
    Good to know. Thanks for clearing that up.

    Quote Originally Posted by 2k1Toaster View Post
    Also not sure what the "P4, yuck" thing was about, but a true nerd will not care of imaginary boundaries of Intel or AMD or even ati or nvidia. I use both, I own both, they both do what they are meant to do.
    Not "P4, yuck" that was "OldP4 1.6 yuck" it used to be my desktop CPU and it's slow and eats a TON of power for what it is. I would rather not be lectured on what a 'true nerd' would and wouldn't care about based on a sling-off on a single processor, not an entire company. I don't hate Intel, but I do like AMD better (nVidia too for that matter) for reasons I will not discuss (aka rant/flame/etc) here. Don't get me wrong, I would love to have a Core2duo in my car, but I'm not made of $$$
    Ashley - http://www.nfspmotorsports.com
    Check out my car club.

  2. #12
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    Ok, is it that I post to soon or is it some kind of law of the universe that "As soon as you post you will find the answer you were looking so hard for by accident" ????

    The Socket 754 board I was looking at on newegg claims support of "Athlon 64 and Sempron" so I was unsure about just throwing a Turion on it. So I was reading the reviews...

    ...Pros: Detects and supports Turion MT-37 natively, including all P-States through Cool-n-Quiet (0.9V-1.25V, 800MHz-2GHz). Lots of BIOS options. Comparatively low-power. Passive cooling. Inexpensive...
    I'm now leaning heavily in the Turion direction.
    Ashley - http://www.nfspmotorsports.com
    Check out my car club.

  3. #13
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    Update: Talked to AMD today, told the guy that I was planning on building a setup for a car and that I was trying to decide between a Socket AM2 3800+ Athlon and a Socket 754 MT-37 Turion. He first of all noted that the MT-37 was a bit slower in terms of GHz but had a 1Mb L2 vs. the 3800's 512k. I like having a large L2. He recommended the Turion because it draws 25W Max, (compared to the 45W of the other) and with Cool-and-Quiet this drops well below 10W on idle, or very simple tasks.
    I also asked about desktop 754 boards supporting Turions and he said many did, but to double check with the manufacturer, I told him about the review (see previous post) and he indicated that if someone else has already done it....
    He also gave me a reason I hadn't even thought about as to why the Turion would be the better choice. It can take the heat. The max temp on the 3800+ is 69C the Turion's max is 89C though. While I don't plan on letting the CPU get near it's max, in an environment as rough as the inside of a parked car in Florida, the higher that max is the better.
    So now I'm getting up my shopping list
    Ashley - http://www.nfspmotorsports.com
    Check out my car club.

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