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Vista Minimum Requirements Unrealistic

A white paper published this morning by hardware analysis firm iSuppli, based on its studies of Microsoft Windows Vista running on multiple grades of computer hardware, has concluded that the software publisher’s stated minimum requirements for the system — which include an 800 MHz processor, 512 MB of RAM, and a 35 GB hard drive — may not be nearly enough.

“Despite Microsoft’s claims that Vista can run on such trailing-edge systems,” writes Matthew Wilkins, principal analyst for compute platforms research, “iSuppli believes the reality is quite different.”

 A much more realistic expectation, states the white paper, entitled “Sorting Out the Requirements for Windows Vista” (downloadable through registration), is for consumers to plan for either a 3 GHz single-core CPU or a 2 GHz dual-core CPU for their desktop systems. A 1.5 GHz processor may be suitable for notebooks. Windows XP can get by with much less.

The reason for what many consumers will consider expensive upgrades isn’t what you might think at first. While a great deal of extra processing power, especially in the graphics department, is necessary for Vista to run the “full experience” of its Aero operating environment — including, for instance, the ability to flip application windows around in full 3D rendering — Wilkins points out that Aero is merely an option, that it isn’t really a necessary one, and that it can be turned off.

No, the reason is the one that should be more obvious, were it not obstructed by the superficial ones: It’s just Vista, and it needs more processing power just to be Vista.

Besides the CPU, the biggest factor impacting the overall cost of a Vista-capable system will be memory, iSuppli says, not graphics. For system builders and OEMs producing PCs today, the firm’s charts make clear, they’ll build Windows XP-capable systems with the same CPU as for their Vista-capable systems, so buyers of new computers this holiday season won’t find new systems with XP pre-installed that are incapable of running Vista.

Wilkins pointed out some reports may be over-dramatizing the notion that older PCs can’t run Vista, saying that while Microsoft’s stated requirements may be unrealistically low, even older PCs today meet or beat those specifications.

Memory will drive up component costs, however, and could be principally to blame for price differences that users will see between XP systems that are “Vista-ready” and those that are “Vista-capable” (Microsoft has asserted their differences).

A 2 GB comfort zone for desktop DRAM — up from the 1 GB zone of realism for XP — would naturally double suppliers’ costs for memory per unit, and thus drive up their total component costs per unit up, iSuppli calculates, by as much as 20%. Factor in the resale margin, and consumers could be paying one-fourth more for a system intended to run Vista.

Vista Minimum Requirements Unrealistic, iSuppli

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