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In Reply to: Re: Setting for permanent underclocking posted by Dawnrazor on April 7, 2007 at 09:51:44:
Key things needed from CPU are: low clock speed, low power consumption and excellent throughput (workrate). Its the last bit that makes it very difficult. So while you can get low speed & sometimes with low power, without throughput, correct 24/96 upsampling suffers. SRC upsampler is process intensive. For 24/192, processing loads grow much more and its always good to have plenty of headroom to do this, hence Core 2 Duo.Some of Intel's Core 2 Duo for mobile looks very good too but its more expensive. Would need to buy a laptop (which has some advantages over a desktop but suffers in other areas).
Follow Ups:
No need to buy a laptop. You can buy core duo and core 2 duo mobile processors and compatible Micro-ATX motherboards on newegg.com (among other places, I'm sure). It does limit your motherboard selection a bit. Should be almost as fast as the desktop core 2 duo, but cooler & lower power. That's what I would try using for this type of project. Apple's Mac Mini is an example of a desktop system using a Core Duo chip originally intended for laptops. Yours would be much better optimized though, with a bigger case (cooler), no optical drive, and a PCI sound card or USB sound device. CPU performance capabilities would be worse, but probably not by very much. RAM speeds and front side bus (FSB) speeds also would be slightly worse, but would this matter for these purposes? I doubt it.
By the way, have you thought about moving the power supply unit outside the case to reduce interference? i.e. an external power brick. I don't know how this would work out... just a thought. This would reduce heat inside the case too, so the fans might not have to spin as much or as fast. It may even be possible to go fanless if heatsinks are used. Replacing the hard drive with flash might help with that too.
Thats why I like Zalman TNN-300 case. See link where I commented on this.It has a good fanless PSU installed on side of opening door. Heatsinks are used for cooling. Inside door is largely solid metal and should help with interference.
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