View Full Version : 6800GT antialiasing

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01-19-05, 12:02 AM
Today i recd my replacement 6800GT from newegg, and it seems to be fine, but i have a question about antialiasing on Nvidia cards, i did have a 9800XT in my system, and it seemd the AA was much better on the radeon. i still get jaggies even when i have AA set to 6x with the 6800GT, i used 4x with the radeon, and it looked much better, any suggestions? I do have AA enabled in the game too, so thats not the problem

01-19-05, 12:06 AM

NV4X or any NV cards do not support 6X AA, if it's set at that like in HL2, no AA will be present!

01-19-05, 12:07 AM
I wanna add this too;


01-19-05, 12:45 AM
I use 4x AA and on some games 8xS AA and it works great on my GT! But ya... 6xAA will get you 0x AA on an nvidia card!

01-19-05, 01:13 AM
IMO I think the FSAA at 2x does look better on the ATI cards but not by that much though and when you put it to 4x or higher it is hard to tell the difference between them IMO.

01-19-05, 01:39 AM
AA on ATI cards looks better to me than NV chip, yet AF on NV are much clearer. Again this is MHO.

01-19-05, 01:54 AM
I didn't notice any difference in AA quality between ATI and Nvidia cards, except for the different high-end AA options (6x on ATI cards, and up to 16x on Nvidia cards). I actually prefer Nvidia's AA method, because the only time I really wanted to go above 4x was for older games, and for those I can use 8xS or 16x and then it will smooth out alpha textures as well, since unlike ATI's AA modes they contain a super-sampling part. Although I was kinda disapointed with the 2x quality on btoh cards, it didn't look much better than my Geforce 3 at 2x. But at 4x, there's a huge difference. I'd rather play at a lower resolution with 4xAA than a higher resolution with 2xAA.

01-19-05, 01:57 AM
IMO stands for ?
MHO stands for?
BSOD stands for.?

01-19-05, 02:06 AM
IMO stands for ?
MHO stands for?
BSOD stands for.?

IMO = In My Opinion
MHO = My Humble Opinion?
BSOD = Blue Screen Of Death (infamous windows crashing screen)

01-19-05, 07:09 AM
IMO stands for ?
MHO stands for?
BSOD stands for.?



Pandora's Box
01-19-05, 07:47 AM
ati aa will look a little better. they have gamma correction in AA, nvidia does not. but as soon as you crank it to 8X Super Sampled AA nvidia wins Image Quality.

01-19-05, 08:02 AM
ATI and NVIDIA AA looks pretty similar to me. ATI wins in some areas, NVIDIA in others. Since I can use supersampling, though, NVIDIA wins overall. SSAA comes in very handy in older games, especially in titles like Carmageddon 2.

01-19-05, 08:50 AM


01-20-05, 01:32 AM
alrite! :thumbup:

01-20-05, 04:36 AM


Just kidding. ;)

01-20-05, 12:09 PM
i agree the AA on my 9700p was A LITTLE better than what i see now. but who fkin cares im playing everything @ 1280x1024 MAX as opposed to 1024x768 MIN so i dont have time to realized that the rafter on a building looks a little sharper and 30 feet away in game but 2 feet away IRL

01-24-05, 07:47 PM
hehe, ok, no 6X AA on Nvidia, i learned that you can set different "profiles" for each game, and all is well now, looks great !! thanks for the help fella's :afro2:

01-24-05, 09:18 PM
I try and play everything at 1280x1024 and always use 4x or 8x AA. Never anything lower.

01-24-05, 11:48 PM
>>hehe, ok, no 6X AA on Nvidia, i learned that you can set different "profiles" for each game, and all is well now, looks great !! thanks for the help fella's

That feature is buggy though I've had trouble getting it working right.

01-25-05, 12:49 AM
I still regret getting my 6800GT over an ATI card, and only because of the crappy AA with this Nvidia card.

I don't care what anyone says. Nvidia AA totally sux, no matter how you look at it, when compared to ATI.

Hopefully I don't get banned for saying that again.

Nvidia really need to look into how they are doing AA. Not only does ATI AA look better, ATI does it with almost no performance hit. 8x AA on Nvidia looks worse that 2x AA on ATI. 8x AA on Nvidia is unplayable on most of the latest games at hires whereas with my old 9800XT, I could play 6x AA at hires and still get great fps. This is, I rarely needed to go 6x AA with my ATI card, and only did so when I used a low res.

Don't get me wrong, as I'm not Nvidia bashing. I only went back to Nvidia so that I could use my 3D glasses, and I am enjoying that again, but I really am going to have to look hard at what I buy next, as far as vid cards go. Unless Nvidia does something about their crappy AA implementation, I will more than likely go ATI again.

01-25-05, 01:12 AM
Don't get me wrong, as I'm not Nvidia bashing.
You are.

but I submit you this;


Then spot the difference.

I went from the 9700 Pro to a 6800 Ultra. Whereas in certain circumstances AA on the ATi 9700 pro card seemed better it is only in certain instances. NV40's AA unit does what it's supposed to do, antialias in games and I am happy with that. It's shame you feel that way in which your set purchase as negative from the word go it seems.

01-25-05, 01:25 AM
In all honesty, ATI AA use to be much superior to nVidia, and nVidia had the tighter yet slower AF. Now nVidia AA is very close to ATi at equal levels, say 4x vs 4x. I too always play 4xAA/4-16AF. Most often I use 8AF though. As I understand it, with ATi and nVidia most of a scene receives 4xAF anyway.

Currently I think both companies have fine IQ and playable frame rates in the vast majority of games if you are considering their mid to high end cards. The lower cost cards can't hold solid FPS with elevated levels of AA/AF in newer games. Still if you game mostly at 1024x768 with low or no AA/AF I'd say don't bother with the more pricey cards. I think a 6600GT is great card for this scenario, say 1024x768 0-4AA/AF.

01-25-05, 08:41 AM
I guess it would help if I quantify by saying that about the only thing I do on my pc is play flight sims, or play driving sims. Both of these type games have you viewing things from a distance, and it seems that at a distance is where Nvidia AA gets worse, whereas with ATI AA, the effect seems to cover the entire screen.

Really, I am not meaning to sound as if I'm bashing Nvidia because I really can say a lot more good about my 6800GT than bad. In fact, the only bad thing I can say is what I've already said. It really is a great card when it comes to both 2D and 3D, extrememly fast, great driver support IMO and hella stable with everything I do with it.

01-25-05, 09:08 AM

I must say the 6800 looks better in that thread.

01-25-05, 09:19 AM
I dumped my 6800 gt for a x800 pro with a ati silencer, I have to say, not only is AA smoother, the textures themselves are sharper. Nvidia does have better af though. But ati's x series handles aa/af combos better than nvidia....this 12 pipe card gained me over 20 fps vs. the gt ...granted by gt was @ stock and the x800 pro is @ 550/540. But going from 1600x1200 4xaa/8x af in farcry dipping into the high 20's has now been replaced with dipping into the lower 40's. :eek: sm2.0b...gotta love it.