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post #31 of 50
Say a single card will render 70 FPS, 2 cards 120, 3 cards 160 and 4 cards 190 on a single resolution. If you mean the perfect scaling is 4 x 70 = 280 FPS, it is not going to happen.
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post #32 of 50
Thread Starter 
Quote:
Originally Posted by DirektEffekt View Post
Yeah, unfortunately the scaling doesn't gain that much after the first few driver releases of each generation. The scaling has progressed quite a way since the original multi-card setups. I can promise that you will see a nice bump with that third card, in certain situations it will take it from unplayable to nice and buttery smooth
thats good to hear looking forward to receiving the rest of the cards in the next few weeks something new to toy with till 2013 and prob watercool sometime between now an then

currently only have 2 cards but my x4 840 i dont think will really cut it. Originally was going to go bulldozer but from the lack luster performance.. gonna wait for a second revision hopefully it comes out within the next few months .. i heard another bulldozer cpu is coming Q1 of 2012 but dont think its a new revision

Quote:
Originally Posted by Ken1649 View Post
Say a single card will render 70 FPS, 2 cards 120, 3 cards 160 and 4 cards 190 on a single resolution. If you mean the perfect scaling is 4 x 70 = 280 FPS, it is not going to happen.
didnt expect perfect scaling, was expecting ~80% of the second card to be utilized and maybe ~40% of the third card and less then 10% of the 4th (this is just rough estimates of course)

I think im going to go 3-way crossfire and help out my friend with the "4th card" and sell it to him instead of using it myself
Edited by DNytAftr - 11/7/11 at 1:48pm
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post #33 of 50
that 8120 will bottleneck your cards in every possible scenario
post #34 of 50
Quote:
Originally Posted by DNytAftr View Post
thats good to hear looking forward to receiving the rest of the cards in the next few weeks something new to toy with till 2013 and prob watercool sometime between now an then

currently only have 2 cards but my x4 840 i dont think will really cut it. Originally was going to go bulldozer but from the lack luster performance.. gonna wait for a second revision hopefully it comes out within the next few months .. i heard another bulldozer cpu is coming Q1 of 2012 but dont think its a new revision


didnt expect perfect scaling, was expecting ~80% of the second card to be utilized and maybe ~40% of the third card and less then 10% of the 4th (this is just rough estimates of course)

I think im going to go 3-way crossfire and help out my friend with the "4th card" and sell it to him instead of using it myself
Well, your in luck then... I think that you will find the cards scale quite a bit better than that In some scenarios you will get very very close to 100% scaling on the second and in most demanding games over 90% and probably about 60-70% off the third, depending on the game of course!
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post #35 of 50
Quote:
Originally Posted by DirektEffekt View Post
Well, your in luck then... I think that you will find the cards scale quite a bit better than that In some scenarios you will get very very close to 100% scaling on the second and in most demanding games over 90% and probably about 60-70% off the third, depending on the game of course!
agreed ... also, the higher the resolution, the better the scaling... the scaling from 1 to 2 to 3 to 4 5870s @ 6x1080p was around 85, 70, 60 respectively in frame rates in crysis ... did this build for a costumer, and i have never seen such great 4-way scaling in my life
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post #36 of 50
Thread Starter 
Quote:
Originally Posted by DirektEffekt View Post
Well, your in luck then... I think that you will find the cards scale quite a bit better than that In some scenarios you will get very very close to 100% scaling on the second and in most demanding games over 90% and probably about 60-70% off the third, depending on the game of course!
Quote:
Originally Posted by eskamobob1 View Post
agreed ... also, the higher the resolution, the better the scaling... the scaling from 1 to 2 to 3 to 4 5870s @ 6x1080p was around 85, 70, 60 respectively in frame rates in crysis ... did this build for a costumer, and i have never seen such great 4-way scaling in my life
oh really? nice so gets better with higher rez, so when i go 3 monitors in the future should see better scaling hopefully reps

Just dont understand why would the 4th card drop so much farther (in terms of scaling) then the 3rd card did? when i was reading reviews, seemed that sometimes the 4th would cause a negative effect on fps (or very little gain, as low as 1 fps) or could those be wrong?
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post #37 of 50
get a silverstone strider 1500w it will do you justice plus maybe a lil head room for expanding or overclocking
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post #38 of 50
Quote:
Originally Posted by DNytAftr View Post
oh really? nice so gets better with higher rez, so when i go 3 monitors in the future should see better scaling hopefully reps

Just dont understand why would the 4th card drop so much farther (in terms of scaling) then the 3rd card did? when i was reading reviews, seemed that sometimes the 4th would cause a negative effect on fps (or very little gain, as low as 1 fps) or could those be wrong?
i have personaly never seen a negative effect (though it is theoretically possible)... the reason is that you get to a point where there is no gain, is because you eventualy have more processing units then there are polygons... also, when you have 8GBs of VRAM, to store those polygons, you need even less processing units to process the new ones because you have a lot already stored in memory... say you have a game maxed at 120FPS on extra high with 3 cards @ 100% usage on all three... theoretically it would take 4 of those cards to only be @ 75% usage to perform the same... however, with every card, you are increasing latency slightly, so it will actually take those cards to be @ around 76-77% ea to get 120FPS... if you are playing at low res and low polygon, that increased latency becomes apparent... that should only be in very rare cases though... i hope this all makes sense ... and this hsould also explain why cards scale better at higher resolutions
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post #39 of 50
Thread Starter 
Quote:
Originally Posted by eskamobob1 View Post
*snip* *snip*
*snip snip* *paper cut*
*snip*
be @ around 76-77% ea to get 120FPS... if you are playing at low res and low polygon, that increased latency becomes apparent... that should only be in very rare cases though... i hope this all makes sense ... and this hsould also explain why cards scale better at higher resolutions
ah okay, this makes sense. So has to do with latency, vram and other factors, not just the cards themselfs so to speak, but how information is processed.

hmm.. but also never knew that ati vram stacks? i know with nvidia vram is just limited to 1 card so with my 470's i have 1.2gb of vram... gah i really gotta do more reading up on ati stuff @_@ i prob sound totally clueless (which now that i think about it.. could be a possibility )
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post #40 of 50
Quote:
Originally Posted by DNytAftr View Post
ah okay, this makes sense. So has to do with latency, vram and other factors, not just the cards themselfs so to speak, but how information is processed.

hmm.. but also never knew that ati vram stacks? i know with nvidia vram is just limited to 1 card so with my 470's i have 1.2gb of vram... gah i really gotta do more reading up on ati stuff @_@ i prob sound totally clueless (which now that i think about it.. could be a possibility )
lol... prity much got it there... and actually not true about the nVidia VRAM... that was true on older cards, but im prity sure the 5xx series stacks VRAM... i also know that you can tweek drivers and such to asign 1 card to each screen giving each screen that amount of VRAM (works on 470s but is extremely hard)... as for ATI, the reason they are so much better at high res is both because they simply brute force information with crazy amounts of stream processors and because they stack VRAM (to my knowledge at least)... the VRAM may be very well why nVidia only alows a combined 3 screens wile AIT will do as many as your cards support... saw a 4-way eyefinity 6 5870 setup running a single 24 monitor block as one giant monitor once (though it was admitedly laggy)... if im wrong on any of this someone plz correct me... i dont want to give the OP false info, but i believe i am right atm
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