Werner:
That's where thwe graphics market differes from others.
NO other market has as quick a turn around or cycle time.
With an IGP, you have to sell a brand new computer everytime. This is not the case with add in graphjics chips. You can sell to the same customer 4 times (four generations) without having to get a new customer.
If however I bought a PC with an IGP this year, I'm not likley to buy one next year. I am though likely to buy a GFX card (assuming it does have a PCIU-e or AGP slot)
GPU Scaling:
One high end ASIC like the NV49 or G71 rather serves as a basis for the entire line. A GeForce 7200 is still a GeForce 7900GTX design. things are removed, some turend off etc... there is no wastage.
This is not the case when all you make is IGPs. The revenue generated from there will never afford you the money needed to invest into R&D for a high end part which you could scale the same way.
This is why S3's DeltaChrome, GammChrome, MuliChrome, XGI Volari Duo etc.. never did work. Cycle time for such companies is much longer than that of Nvidia and ATI.
If you look at the time between TNT2, GeForce256, DDR and GeForce2 GTS it was all within the same year! 15million to 27 millin gates within 12months (.25proc to .18proc) is not something any other IHVs could do at the time. And at this time NVIDIA had absolutely no OEM share at all.
Why NV want OEM so bad (MCP61 due out soon, is an integrated Northbridge, southbridge and Graphics part on one chip!

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is that they can stretch their investment even farther. With DX10 out now, there's no need for them to invest as much as they used to in feature sets which cost silicon space; hence money. All they have to concentrate on is speed and that's it! That leaves them moere revenue to invest into IGP, mobile devices etc.. where performance isn't the number1 factore, but battery power and price.
Right now 6100 doesn't have to sell well (it would be greatly appreciated though!) in order to recover costs. There are virtually no costs to nVIDIA since this is 2004's NV40 chips stripped etc...
Once all their parts are shifted to DX10 (that's why they'll be all over everybody's face saying they have the first DX10 integrated part!) it'll be even cheaper for them in the long run to make IGP.
It's the Halo effect. Use your highest performaing part to sell everything else in your line up.
