Originally posted by: dworley
I agree with Housecat! I have bought and tried the X800XL and then an X850XT in my SLI rig since I mostly play CS:S. (I had planned on building out a Shuttle with one of the ATI cards just to play CS:S) What I found is that when playing online in 30 player office or 24 player Dust matches the framerate was averaging significantly less and had worse slowdowns with the ATI cards. Keep in mind I was trying to run 1600x1200 at High details and 2x/4x, even after backing down most of the settings I was still getting dips to 30-40 fps during some heavy action or just starting out from spawn!
After reading all the hype and online benchmarks one would think that the ATI cards had an advantage in Source games comparable to SLI. To compare my results I ran one of the 6800GT's in single GPU mode and got results on par with the X850XT, however not as severe as a dip in framerate under heavy action. Note that I do run my 6800GT's at 420/110 (Ultra Speeds) which is another big factor in why I like the 6800GT's since they overclock so well! (Both of my 6800GT PCI-E's would overclock to a max of 440/115 on air cooling with an NV5 Silencer)
Housecat - would like to get some more details of your success with running your Widescreen monitor. Which monitor, resolution, games? Analog or DVI I have a Dell 20005FPW and (2)6800GT SLI and have the problem with the screen "jitters" when running any widescreen 16:10 aspect reolutions with DVI (tried all recent leaked beta drivers)
Sure! I'd be more than happy to assist.
I use the latest official release from Nvidia, as they overall work the best and most stable for me. I have tried all the betas, and while I decided years ago that I prefered to stick with official releases, I have found more reasons to stick with this logic.
On your widescreen jitters, there are 2 workarounds I've found
1. Run the game in a window. My prefered method as there is no real loss of anything this way, you simply run 1680x1050 in a window... quite simply a great workaround.
Certainly nothign to complain about doing it this way at least.
2. Use the analog connection. This method while it allows you to run fullscreen.. makes the quality on my LCD to be considerably worse while in Windows. Its bad enough that I cannot stand it after using DVI for so long.
The root of this issue to my knowledge is that NV software engineers did not account for the more uncommon widescreen DVI resolutions that are in the upper range like 1680x1050.
It is really not a serious issue, and SHOULD be fixed in the next release.
Basically, I think its a timing issue. I've tried to find the correct setting within the advanced properties for 1680x1050 but I dont know enough about DVI timings to do this correctly.
I just run the DVI and go 1680x1050 in a window, which covers the entire screen anyway!
This "jitter" problem is the only problem I've found with SLI at all. So I'm pleasantly surprised and completely satisfied as you are. But I hope I've helped explain the jitter problem.
I have the same experience on my friends X800XT in CSS as you did. They do not maintain as good as playing experience as the NV cards.
Which is a testament to NV as you know CSS is not optimized for NV for sure. The current Radeon technology is at its wits end, and its time its retired.
The X series has been a relatively bad buy in comparison to the GF6 line.
You need some type of SLI and SM3 to have a competitive product, or at least need to blow the GF6 line out of the water (in all its incarnations, 6800 Ultra and the SLI rigs), which nothing can do.
You've (dworley) seen that for yourself as I have.
6800GT/Ultra > X800/X850
Which is why I recommend to the OP to stick with the Ultra.
Very solid product from performance to feature base.
The only way I could recommend ATI now is if someone had a specific use that was ATI's niche.. but what is that?
OpenGL support? NV now has OGL 2 support with the 75series driver, and overall exceptional support in this department.
Multimonitor? NV
64bit support? NV
Linux support? NV
DX support? Its about a draw here.
The only thing I can think of is TV Output, ATI might be better in this department. They are in my experience at least.
My experience in gaming, at least in the worlds premier online game (CSS) NV leads in that department for real world playability. And you dont even have the option to get those horrid .Net drivers.
You will also notice that Nvidia seems to have optimized very well for the WXP GUI, if you drag a window around really fast with any NV accelerator, from a GF1 to GF6 it does not lag nearly as much as with a ATI accelerator.
This lack of acceleration from the ATI drivers in the GUI effects my productivity, and I cant have that.
Anyway, like you dworley, I've found what works best for me in most computing situations. I'm loving my NV SLI.