Crossfire in SLI?

It's coded in the drivers, it's so either company makes more money because you need proprietary hardware to run it.
 
it has more to do with the mobo chipset, ATI and NV want you to use their chipsets, SLI and CrossFire are more of a package/platform kind of deal, at least for now

this may change in the future ;)
 
The ATI driver checks your chipset. If it doesn't see a "Crossfire enabled" chipset (which is nothing more than a checksum), then no Crossfire.
 
Once again,

ATI can make Crossfire work on NF4 any time they want. No technical reasons why it cant, just drivers that forbid it.

Installed base of NF4's > 5 MILLION

Installed base of CS3200 based motherboards.... a few thousand maybe.

Which one would sell more X1900's? The anwaer is obvious... BOTH, let the video card group sell video cards, platform independent, and the motherboard group can fend for themselves.

The motherboard chips would end up NEEDING to be better than its competition, and the video card sales would cut hard into NV's market share.

Instead, lets leave this huge incentive to buy NV cards for all the NF4 systems, so NV gets to sell 2x NV video card for each NF4, rather than ATI selling 2x 1900 for each NF4.

Brilliant plan.... if you are NVidia's marketing dept. ATI is brain dead in the marketing dept. They should be a defense contractor, or a auto maker, they'd fit right in.
 
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