Well, there are a couple of glaring disparities for someone claiming to be an expert. For one, it's not "PCI-X". This is a bus technology typically found in server environments. It's actually "PCI Express" (a.k.a. PCI-E or PCIe). PCI-X is still a parallel link technology where PCI-E, like SATA, USB, and HyperTransport, is scaleable serial link.
All modern ATI and NVIDIA graphics cards are "compatible" with DX10, even those that only have hardware acceleration for DX9. And DX10 only operates under Vista (unless you hack your games), so this is a don't care bullet if you're using Windows XP. There isn't a non-linear editor out there that "requires" DX10 anyway. This is primarily for games. The additions over DX9 in DX10 won't speed up your rendering or preview times in video overlay. And unless you're running a 30" Cinema Display or equivelent, you can get by with 128MB local framebuffer. EDIT: Now there are some cool technologies in the latest DX10 graphics cards from ATI that have dedicated cores for accelerating MPEG2, H.264 and VC1 (High-definition codecs found in HD-DVD and Blu-Ray), so if you plan to author in HD and use these codecs and you are using a compatible player (like the latest Cyberlink PowerDVD) these graphics cards can help offload the CPU for other tasks.
I bought a 500GB 7200 RPM External USB 2.0 hard drive for $85 not too long ago. Purchased many 350-450GB internal SATA drives for under $100, all 7200RPM. 10K RPM drives are the expensive drives, but not really necessary for 90% of editing tasks. I run RAID 0 in one of my systems.
Some motherboards have built-in IEEE 1394, high-definition audio, graphics comparable to the Radeon HD2400 (e.g. the AMD RS780). You don't necessarily need an Intel CPU for non-linear editing. You can easily get by with a dual or quad core Athlon/Phenom. These motherboards run anywhere from $99 to just over $200, and they will save you the cost of adding audio, graphics, NIC, and IEEE 1394.
I got a free tower case ($50 with a $50 mail-in rebate) in a Fry's sale.
I picked up 2GB good quality PC6400 DDR2 memory for $70 on the same sale (after mail-in rebate).
You don't need XP Pro. You can get by with XP Home unless you are on a corporate network using Domains. Here's a legit full copy for $90.00 (you can get the upgrade for the same price if you already have an older version of Windows). Granted, this is supposed to be for system builders, but it will still install fine and activate:
http://www.amazon.com/Microsoft-Win..._1_2?ie=UTF8&s=software&qid=1204444882&sr=1-2
Believe me, you can build PCs pretty cheap these days. What you can't get cheap "legally" is all of the software you need to run it, so on that much we can agree. Although AVG Free is an excellent AntiVirus software. And note that it's "free".
I have 20 years of professional experience in the computer industry, so we can certainly pick some nits together.
I am currently a Field Applications Engineer for AMD and previously performed similar functions at ATI Technologies, Compaq, 3dfx Interactive, Dell, and STB Systems (graphics and multimedia hardware).
Let's get technical.
Disclaimer: I build my own PCs because I can get stuff at a discount since I work in the industry, and I have the expertise to keep them running stable and debug them when they're not. If you are just getting started in computers and digital non-linear editing, buy a Mac or a brand name Commercial desktop (preferably using AMD
) because it will save you a ton of headache. Building your own PC is fun if you want the knowledge and experience and have patience to work through the compatibility issues with the mish-mash of retail components that probably never got tested together. Yes, there are plugfests and standards designed to make everyone play well harmoniously, but there will always be the oddball out there. Hard drives can land on the shelves with outdated and/or buggy firmware, but so can motherboards. Most Commercial computer systems (from Dell and HP, for instance) and Apple Computers go through rigorous compatibility and stability tests in order to deliver a solid solution to customers. Finding that in a "DIY" computer is rare unless you really know what to avoid.
Now that said, [shameless plug] I am happy to say that Mac isn't always the answer to every solution in film. Lucasfilm and ILM use AMD processors to deliver their stunning CGI and digital effects like those seen in the movie
Transformers [/shameless plug]