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[PCZilla] HD3870X2 Conquers GTX260 - Page 4

post #31 of 38
if the GTX260 and/or 280 is beat by a card that is already out even by .01 FPS - then it epicly fails like I originally thought.
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post #32 of 38
Conquered? More like matched
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post #33 of 38
Thread Starter 
Quote:
Originally Posted by grunion View Post
I think not, I use x16AF in every game.
Zero deaths
I think what he was referring to was the fact that it is commonly said that the HD3k series has poor AA performance when this isn't entirely true. It is mistakenly interpreted that way because review sites tend to turn up AA and AF at the same time, and conclude that the performance drop is due to AA being applied. In my opinion this is because they find out that AA is done on shaders instead of ROPs and without doing any additional investigation assume that this new method is the cause. Really, the problem lies with the relative lack of texturing capability on the part of RV670 and so it is the AF that drops the performance.

That being said, true or not, the benchmark graphs do show that only 1xAF is being used. Not applying a lot of AF while using AA should indeed skew the results in RV670's favor and make it look like these cards are less of a generational leap. However, I'm undecided as to whether or not I think this is "fair". If these results are to be used as a comparison against HD4870, which should be a bit faster than the tested HD3870X2, then I think it is appropriate. My reason for this is becauase RV670 really did choke with AF, and I think doubling the amount of TMUs available should alleviate the performance issues with AF enabled. Add in the fact that Nvidia cards typically take little to no performance hit with AF enabled, and this becomes sort of a "simulated HD4870" comparison.

Note: I'm making no claims as to the validity of this bencmark, because noone really has much of an idea as to how either the GTX280 or HD4870 will perform at this point. I'm just expressing my thoughts about the given data, true or false.
Edited by darkcloud89 - 6/15/08 at 9:55pm
post #34 of 38
Quote:
Originally Posted by darkcloud89 View Post
I think what he was referring to was the fact that it is commonly said that the HD3k series has poor AA performance when, in fact, this isn't true. It is mistakenly interpreted that way because review sites tend to turn up AA and AF at the same time, and mistakenly conclude that the performance drop is due to AA being applied. In my opinion this is because they find out that AA is done on shaders instead of ROPs and without doing any additional investigation assume that this new method is the cause. Really, the problem lies with the relative lack of texturing capability on the part of RV670 and so it is the AF that drops the performance.

That being said, true or not, the benchmark graphs do show that only 1xAF is being used. Not applying a lot of AF while using AA should indeed skew the results in RV670's favor and make it look like these cards are less of a generational leap. However, I'm undecided as to whether or not I think this is "fair". If these results are to be used as a comparison against HD4870, which should be a bit faster than the tested HD3870X2, then I think it is appropriate. My reason for this is becauase RV670 really did choke with AF, and I think doubling the amount of TMUs available should alleviate the performance issues with AF enabled. Add in the fact that Nvidia cards typically take little to no performance hit with AF enabled, and this becomes sort of a "simulated HD4870" comparison.

Note: I'm making no claims as to the validity of this bencmark, because noone really has much of an idea as to how either the GTX280 or HD4870 will perform at this point. I'm just expressing my thoughts about the given data, true or false.

Define "choke" I just don't see it.

Also, what games?
Edited by grunion - 6/15/08 at 9:57pm
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post #35 of 38
Quote:
Originally Posted by darkcloud89 View Post
I think what he was referring to was the fact that it is commonly said that the HD3k series has poor AA performance when this isn't entirely true. It is mistakenly interpreted that way because review sites tend to turn up AA and AF at the same time, and conclude that the performance drop is due to AA being applied. In my opinion this is because they find out that AA is done on shaders instead of ROPs and without doing any additional investigation assume that this new method is the cause. Really, the problem lies with the relative lack of texturing capability on the part of RV670 and so it is the AF that drops the performance.

That being said, true or not, the benchmark graphs do show that only 1xAF is being used. Not applying a lot of AF while using AA should indeed skew the results in RV670's favor and make it look like these cards are less of a generational leap. However, I'm undecided as to whether or not I think this is "fair". If these results are to be used as a comparison against HD4870, which should be a bit faster than the tested HD3870X2, then I think it is appropriate. My reason for this is becauase RV670 really did choke with AF, and I think doubling the amount of TMUs available should alleviate the performance issues with AF enabled. Add in the fact that Nvidia cards typically take little to no performance hit with AF enabled, and this becomes sort of a "simulated HD4870" comparison.

Note: I'm making no claims as to the validity of this bencmark, because noone really has much of an idea as to how either the GTX280 or HD4870 will perform at this point. I'm just expressing my thoughts about the given data, true or false.
Interesting......I guess it's due to the res that I run that AA hurts performance more than AF. Either that or AF isn't working while being forced in CCC.....
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post #36 of 38
good, let the prices fall!
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post #37 of 38
They shall fall and the broke shall get decent cards!
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post #38 of 38
Quote:
Originally Posted by grunion View Post
Insert obligatory Nvidia fan boy statement now...so, the GT200 is a single GPU card, it's sad that it takes a dual GPU card to beat a single GPU card from Nvidia

FYI I get 28fps with x8 AA @ 1600*1200 in Crysis.

For those of you that don't know, the X2 is a damn good card.
And when you can get one for < $300, it's even better.
so if the 4850/4870 beats 260 and 280?
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