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Hello, I´m a PC user that likes a lot Linux, I recently was brosing the web searching a new computer for me I found this Pegaoso, but I had some questions about it
1º) I think that 600$ only for a motherboard that only can have a 1Ghz processor only have a 1.1 USB and has only 3 PCI is too much, I´m forgeting soomething?
It's more than the cost of a PC but not more than the cost of a LOW POWER PC. If you bought a Pentium M motherboard of the same power consumption (1.1GHz ULP version of the processor, ~10W in operation) it would cost you $200 for the motherboard and $450 for the rare CPU.
3 PCI is more than you will need considering the specifications of the board. We currently ship AGP graphics card and are thinking about a USB 2.0 card in one of the slots for our prebuilt machines. That still leaves you with two slots for.. more powerful soundcard? Storage controller?
You will already have Firewire onboard for external disks and video/audio editing. Do you really need to add disks internally for storing downloads or movies? Firewire housings and disks are very cheap these days.
The optical audio out is the highest quality audio you can get. So why buy a soundcard just to get another optical or coaxial digital audio feed?
Check out the Mac Mini which hasn't even got a microphone socket, only two
USB and a single Firewire port in comparison. Once you buy your Mac Mini you are stuck with your Radeon 9200 and your 1.25GHz processor forever.
You may also be disappointed with the 4200rpm disk (very slow) and the weak DVD drive.
The Pegasos is expandable.
The highest we have TODAY is 1GHz G4, but not very far in the future we will have 1.4GHz and possibly 1.8 to 2.0GHz processors to ship. You can buy them when they are available. Yet again, you do not get this option on Mac and we will have a much longer usage of these processor slots than AMD or Intel use on their designs (they have changed sockets 2 times in the last 3 years, we have no need to change it for Pegasos)
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2º) I read that the motherboard can use more than one processor, where i can put the second because in the photos I don´t see any second socket.
The dual CPU card will have both CPUs on the same card. You don't need a second socket as they share this bus. This is electrically a better, faster solution than two sockets and it means you will have an easier method of upgrading; take one card out and put the new one in.
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3º) This motherboard uses a PowerPc, I don´t know any more about them that they are used in the Mac, and if the processor is from a Mac: this means that all the hardware is needed to be from Mac?
Not at all! Our firmware supports booting PC graphics cards (using an x86 BIOS emulator) and properly initialises other devices, so you don't need to spend $200+ extra on a Mac device. If you run Linux you can use the drivers for ethernet, audio and so on as if it was a PC - all the same assumptions about card state on boot are identical.
The exception to this is storage; if you want to boot from an external storage controller it will need to either have motherboard firmware support (I can get a comprehensive list of SCSI/SATA controllers we have supported or planned) or an Open Firmware compatible firmware on the card ("Option ROM").
This is more of a theoretical point as I rarely have seen someone buy a brand new motherboard and then instantly replace the boot controller with some other device. Under Windows you would never boot the system ever again
We are investigating solutions using boot loaders, and cheap flash controllers which would fix this for you.
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4º) Searching about the PowerPC I found that actually there is a G5 (i dont know what means that) but the Pegasos only can use a G3 (I think it´s too slow) or a G4, this means that the Pegasos is an old machine?
No. The G5 is merely a 64bit implementation of the PowerPC architecture.
This does not mean the same thing as it does under x86 (Pentium vs. AMD Opteron) because there is no inherent difference between 32 and 64bit PowerPC architectures which give instant enhanced speed. The same number of registers are used. The same functional units are implemented.
The main benefit is you can use much more than 4GB of memory, but this is rare or impossible on 99% of the shipping Apple and Intel/AMD motherboard solutions anyway due to the memory controller and lack of slots for memory on the motherboard.
Technically the G4 and G5 are identically clocked and the G4 has a much lower latency in cache, memory access and instruction execution. This means it can do much more work tick for tick on the GHz clock. The G4 is more efficient and runs cooler. The only thing the G4 isn't is 64bit.
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5º) With the PC i know that i can purchase any hardware and there will be supported by the Linux core what about the Pegasos drivers
Pegasos is 100% supported for internal hardware by Linux kernel 2.6.12 and above. As for drivers there is a good chance any hardware you buy will just plug in and work if there is support in the kernel, again as stated above. What you will not get is nVidia x86 binary drivers for graphics cards, for example. These kinds of drivers for Linux are quite rare though, most of the support is actually built into the kernel instead and is Open Source.
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And the most important do you think that I should buy a Pegasos if I´m not a hardware or driver developer?
Thanks for your attenction I excuse me by my poor english (im spanish)
Your English is better than my Spanish
As a PC user, the best case for buying a Pegasos is if you were ever tempted to buy one of the Via EPIA motherboards with the low-power low-noise processors. We have tested these boards (and many others have online) and they offer very very low performance for their price; a 1GHz processor on a Via board is HALF the performance of that of our 1GHz PowerPC, just doing simple operations. The Via platform backs the processor up by having many peripheral chips like MPEG decoders. The G4 can do this on it's own.
The G4 also includes an instruction unit called "AltiVec" which is like Intel's SSE but much, much better. The performance gains on code written to utilise it are anything from 2x to 16x at the very basic level; some code written properly has seen 40x speedups. With SSE this kind of optimisation is possible but much harder to acheive for software developers.
The way the G4 is designed means that in vector performance it is guaranteed to far, far exceed the capability of the Via chip mentioned above, and when you add AltiVec into the equation, it simply blows it out of the water.
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Matt Sealey
Genesi, Manager, Developer Relations