spoonboy :
2. 9800gtx+ probably is, but theres very very little in it. 9800gtx is generally behind the 4850. Especially if you pump the res and AA. COD4 is on 'The way its meant to be played' by the way
. As our most top titles:
http://www.nzone.com/object/nzone_twimtbp_gameslist.html
3. The 4850 and 4870 run hot, but its utter childsplay to make a custom fanprofile in Catalyst control centre:
http://enthusiast.hardocp.com/article.html?art=MTU1MiwxLCxoZW50aHVzaWFzdA==
If this page at madshrimps.com is anything to go by, a sensible 40% fan speed should chop 20°C of load and idle temps.
My 4870 never gets to 60°C with 30% fan speed under load, idles in the low 40's. 35% fan speed load in the low 50s and idles between 38-40°C. 40% fan speed has little effect on temps over 35% for me, so over 40% would just be noisey and not all that effective.
4. Overclocking the 9800gtx/9800gtx+ has some pretty steep diminishing returns. The G92 core has acute bandwidth/framebuffer bottlenecks at the higher end.
http://enthusiast.hardocp.com/article.html?art=MTU1NCwxLCxoZW50aHVzaWFzdA==
5. Physx and CUDA are just as ambiguous in usefulness right now and the immediate future as dx10.1. Games brought out using it might very well need more shading power for the physics calculations than a 9800gtx can provide. Browse through this article and make your own mind up:
http://techreport.com/articles.x/15261/1
6. 4850 uses less power than the 9800gtx, marginally more than 9800gtx+
7. 4850 has better audio features, if your a home cinema fan.
2. got me there on the COD4 thing, but the point is most games on review sites run about faster on the GTX+
http://www.bjorn3d.com/read.php?cID=1297&pageID=5020
http://www.legitreviews.com/article/731/17/
"The GeForce 9800 GTX+ was faster in the majority of the benchmarks we tested it on and it had a tad more overclocking head room than the ATI Radeon HD 4850 did"
3. I was comparing stock to stock...
If I made a fan profile with my card it would idle and load much lower (not that I need to)
Also, using your 4870 as an example is irrelevant as this is comparing the 4850 to the 9800 GTX+, using a different card with a different cooler would be like me comparing a 9800 GTX+ to a 9500 GT in power usage- different cards, different price points, not comparable.
4. These are MID RANGE cards, ($200 and below- mid range) neither the 4850 or the 9800 will be adequate at the "higher end, " whatever that is according to you (if you mean higher resolutions and 8x AA, the average user would be looking for a bit more oomph then these cards can provide- like your 4870 )
anyway, review sites overclocking results are not half bad...
http://www.legitreviews.com/article/732/6/
"At 1920x1200 the overclocked GeForce 9800 GTX+ enjoyed a 14.1% performance increase for free!"
note that this card is slower than the 4850 at stock settings, but when overclocked (and it OC's higher), at 1920 by 1200 (is that res "higher enough" for you?), big improvement.
similar results in other games too
http://www.legitreviews.com/article/732/5/
http://www.guru3d.com/article/geforce-9800-gtx-512mb-plus-review/11
"You can expect to push another 10%-15 additional performance out of the card, completely free"
5. "Physx and CUDA are just as ambiguous in usefulness right now and the immediate future as dx10.1"
remember that there actually ARE games that support physx right now
http://physx.cwx.ru/
6. well you stated it right there, "marginally more than 9800gtx+"
7. these cards for overkill for HTPC, any way, If i was an audio freak, I would prefer my sound to come from a dedicated sound card
*tired after typing this
*edited some typos