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Will Your Clients' PCs Run Windows Vista?
By John G. Spooner and Mary Jo Foley

Not all PCs will gain a full view of Windows Vista.


Microsoft Corp. has yet to finalize the minimum requirements for a PC to run its forthcoming operating system. But numerous PC industry watchers predict a dichotomy for the OS, which is due in late 2006.

Although it will be able to run on all but the most ancient machines, the OS will favor newer and relatively powerful machines when it comes to showing its true colors, analysts say.

Based on details provided by the software maker—a Microsoft representative this week suggested PC buyers who want to gain the full Windows Vista user interface experience pick up a PC with a discrete graphics card that supports its DirectX 9 graphics specification—analysts say that not all of today's hardware has the graphics chops necessary to display Windows Vista's most visually compelling feature, its new Aero Glass 3D user interface.

Thus even for PC owners who have purchased new machines in the last year, hardware upgrades of one type or another—either a new graphics card or, if a machine's graphics can not be upgraded, possibly a new system—may be necessary to run Windows Vista's Aero Glass effects.

Given Microsoft's suggestions, even buyers of new PCS in coming months will have to pay extra attention, and often spend extra, to ensure they choose systems with the graphical oomph necessary to run the Aero UI—if they expect to upgrade, analysts said.

"The question, now, is ultimately what will the…graphics requirements be when it ships and how many computers sold today will meet those requirements," said Joe Wilcox, an analyst at Jupiter Research.

PointerClick here to read how Windows Vista compares to Apple's Tiger OS.

Of particular concern are notebook PCs, which are traditionally a step behind when it comes to graphics performance, Wilcox said.

Microsoft has said it won't issue the minimum hardware requirements for Windows Vista until next summer. However, the company has already dropped hints that analysts say suggest Windows Vista's Aero UI requires relatively high-end graphics. The operating system itself will determine which level a PC fits into by sensing its graphics capabilities, and PCs will either be deemed capable of running Aero or not. Those that are not will present a classic Windows interface, the software giant has said.

Thus PCs also fit into two basic levels of preparedness for Windows Vista. At WinHEC in April, Mark Croft, a group product manager in the Windows product management group, told PC makers that most existing mainstream processors should run Longhorn. But he drew distinctions between PCs that will be "Longhorn-ready" versus "Longhorn-capable."

eWEEK.com Special Report: Windows Vista: Microsoft's Longhorn Client

Older CPUs with 128 or 256 MB of memory and older graphics will be capable, he said.

In the interim, Microsoft is suggesting customers leave themselves room to, at a minimum, upgrade their PCs' graphics.

"Windows Vista provides the best possible user experience allowed by the graphics capabilities of each computer," a Microsoft spokeswoman said in an e-mail to Ziff Davis Internet. "As graphics support is still being finalized, customers who plan to purchase new PCs should consider specifying graphics cards with AGP or PCI Express interfaces, which are most easily upgraded. For Aero effects video graphics cards should support: DirectX 9 with an LDDM [Longhorn Display Driver Model] driver, 32 bpp [bits per pixel] color depth, and 64MB of graphics RAM."

Graphics cards that support DirectX 9 first came out earlier this year. But given that most low-end PCs and notebooks now use integrated graphics and not all of them offer AGP or PCI slots, not all PCs' graphics can be upgraded. New PC buyers must also take those same issues into consideration, analysts said, making sure they either purchase hefty enough graphics to begin with, or have space to upgrade.

Whether or not a PC has so-called integrated graphics and or the means to upgrade to an add-in card will become the fault line that separates the graphical haves and have-nots, analysts say.

Most low-end to midrange desktops and notebooks make use of integrated graphics, meaning they rely on graphics processors that are parts of their chip sets. Chip sets shuttle data to points within a PC, not unlike a person's nervous system.

"If you go out and spend $500 and get a Dell special based on the [Intel] 865GV [chipset with integrated graphics] you're likely to be running in more of a legacy mode," said Dean McCarron, an analyst with Mercury Research Inc. "Quite honestly, that shouldn't be all that surprising."

Next Page: Aero probably won't run if the graphics are integrated.

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