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[HWUnboxed]Nvidia’s HB SLI Bridge – Surprising gains! GTX 1080 SLI Testing Inside! - Page 5

post #41 of 169
This thread should be deleted because the referenced article doesn't even mention what resolution it was tested at.

Oh wait... 4K in the photos.
Quote:
To my surprise with two flex connectors installed I received the exact same boosts in The Witcher 3, Division and Fallout 4 as I did with the high bandwidth bridge. So it seems if you have two legacy connectors you don’t actually need a high bandwidth bridge.

Now this does make a little more sense because it has been established, the single ribbon SLI bridge should be fine up to 4K 60 Hz. Since Pascal can take advantage of 2 SLI connectors at once, even with 2 ribbon cables, it stands to reason that there would still an improvement.
Edited by umeng2002 - 6/24/16 at 5:41am
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post #42 of 169
The new bridge is so much of a necessity you can't run SLI without it.
Just kiddin'.
post #43 of 169
Isn't this literally what was said earlier on. What did all the single monitor 1080p patrons think this was meant for them or something?? These guys know we're not that gullible (I'd like to think not especially considering the swath of 'value clockers' prowling this place that think every new thing released is automatically supposed to be targeted at their use case rolleyes.gif )
post #44 of 169
Okay I asked this on youtube and hardware unboxed never answered me. So I will repaste the question I posed.

Phenomenal review and great experimental design! My question is with the frequency gap between the 400MHz legacy bridge and the 650MHz HB bridge. Is there anyway to test if using two legacy bridges will transfer data at the 650MHz rate when used on a GTX1080? i.e. is the bridge or the card that is dictating/bottlenecking frequency of transfer? This thought comes from the matching FPS results you were able to achieve using the two legacy bridges, while I would agree with the school of thought there are not many games out that are crossing the bandwidth needs of the witcher 3 running 4k at 90FPS, is it possible that the legacy bridges were in fact running at the slower transfer frequency of 400MHz during your testing but not yet bandwidth bottlenecked in the dual configuration?

i would add now: Could a testing of the HB bridge on 4K surround bring a difference between the HB and the dual legacy bridges if say the Hb was actually operating at 650MHz and the legacy was bottlenecked to 400MHz by design?
post #45 of 169
Quote:
Originally Posted by umeng2002 View Post

This thread should be deleted because the referenced article doesn't even mention what resolution it was tested at.

Oh wait... 4K in the photos.
Now this does make a little more sense because it has been established, the single ribbon SLI bridge should be fine up to 4K 60 Hz. Since Pascal can take advantage of 2 SLI connectors at once, even with 2 ribbon cables, it stands to reason that there would still an improvement.


Anything sli can take advantage of two ribbon cables. I've been doing for about 8 years. Two cables two cards. Try it. I used haven benchmark, to check my results.

It didn't show the same results as this. However it made 4 or 5 fps more, than just a single cable...
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post #46 of 169
Quote:
Originally Posted by DrFPS View Post

Anything sli can take advantage of two ribbon cables. I've been doing for about 8 years. Two cables two cards. Try it. I used haven benchmark, to check my results.

It didn't show the same results as this. However it made 4 or 5 fps more, than just a single cable...

I have always used dual flex cables as well. While the new HB bridge is pretty stylish, if I can avoid it I will. I run a 144Hz 2K monitor and will likely see some gains if the review is accurate. Should be about the same bandwidth needed to run 4k at ~70FPS, depending on the game of course.
post #47 of 169
The scaling for multi-GPU looks pathetic for what you spend. I would've like to think that the scaling would be what the 1080 is getting with the HB bridge from the beginning.
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post #48 of 169
Quote:
Originally Posted by bucdan View Post

The scaling for multi-GPU looks pathetic for what you spend. I would've like to think that the scaling would be what the 1080 is getting with the HB bridge from the beginning.

It certainly can be but it isn't always terrible. Sometimes it provides that little bit more you need to get what you want (FPS/Eye Candy).
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post #49 of 169
This is entirely unsurprising. The Flexibridges have always been bandwidth constrained. Most ridged bridges will offer similar performance to the HB bridge, if not identical.
post #50 of 169
Then there is the argument: Is $40 worth 5 extra fps when you could buy another decent game for that much?

IDK, the price seems a bit steep for what it is. nVidia funding SLI customer support on the back-end?
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