Yeah and I don't think you're going to want to enable the DX10 path on the DX10 midrange cards unless you like playing at half the resolution on your LCD. And to me people playing DX10 at 800x600 on a 16x10 LCD are going to have a worse visual quality due to interpolation than those playing the DX9 path at native resolution.
So the GF8600 and HD2600 will be ok for the most casual of gamers, who prefer good 2D quality and video acceleration. But IMO even for gaming, unless they use a CRT the benefits will be wasted.
The X2900 improved with recent drivers and I expect the same from Nvidia for the 8600 and 8800. I expect the X2600 won't just be aimed at the HTPC market, because there really needs to be a good mainstream/performance DX10 gaming card for under $250. Right now, I think the marketing departments are calling the shots with an unrealistic separation of multimedia and gaming segments of the population.
Everyone seems to think that the 8600 is the new FX5200, that the whole 8xxx series will be a dog of a series like most of Nvidia's FX. That may be true, but we'll need two things to know for sure; mature drivers and enough DX10 games to separate out the poorly implemented from the elegantly implemented.
The popular wisdom today is that if you don't have an 8800GTS 320, or the power hungry X2900XT that you don't have even a barely capable DX10 card. My advice was that if one simply has to get a new card that will last for a couple of years, the X1950 Pro is a dead end. It's best to get an 8800GTS 320 for the low end of the performance market, but they are priced a bit high now. They aren't priced where they should be.
Both AMD and Nvidia's partners want to get rid of their inventories of X1950 and 7900 class cards. I guess they are worth it if you want to upgrade again in one year. Someone will buy it on Ebay.
As for LCD vs. CRT, maybe the reason I can tolerate my 7600GS is because I have a CRT? The whole LCD resolution thing makes me think that technology just isn't oriented towards gamers, despite the 8 ms response times.
The question was a card in a particular price range and my response relied upon expected driver improvements to mainstream cards. Ideally, I'd say don't buy now but wait until you can afford an 8800GTS if you must have DX10 by this fall. if someone prefers an X1950 Pro, then that's fine with me, I'm not the one buying it or a 7900GT.
As for framerates, Tom's has the 8600 cards at between 10 (GT) and 18 (GTS) fps in Oblivion outdoors at 1600 x 1200. Those are playable framerates by TES RPG standards, I get similar framerates at 1024 x 768 on high with a 7600 GS, but I'm sure the 8600 and X2600 cards will allow ultrahigh features.
In FEAR they get 46 (GT) to 62 (GTS) at 1600 x 1200. The X1950 Pro only gets 59 fps at that resolution. What's the big difference if the minimum framerates are still playable?
If new drivers allow the new cards to do better in DX10 than they do in demos like Lost Planet, then they will be viable in both FPS and RPGs, though not with all features maxed out as with the 8800 or X2900 series.
Should people wait? Well if we wait, we can wait too long to really enjoy the games we have. I avoided the faster X800 series for my AGP system because I didn't want high fps but no HDR. I waited until an affordable and reasonable shader 3.0 solution from ATI on AGP. I finally got my X1650 Pro for the old PC a month after I build the new system. Should I have waited for the X2600 AGP come fall?
http://www.tomshardware.com/2007/04/17/geforce_8600/page7.html
I think the 256bit 65nm parts are the killer part that people like yourself an Yipsl should be looking for, the question is WhenTF do they arrive? December's a long time to wait, and might as well get a cheap $120 X1950PRO/GF7900GS for now and then replace it later if that's the case.
Yes, when will they arrive? I got my 7600GS in the new build just to hold me over until I could afford a DX10 card and some DX10 titles had arrived. I bought the cheapest card that had at least 12 pixel pipelines for Oblivion. If I'd known I was going to wait until Q1 2008, then I might very well have gone 7900GS
As far as it goes, if I do wait for the next generation, I'll still spend between $300 and $450 on a card, depending on benchmarks in RPGs. I'm not looking for a mainstream part in my dual core.