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AMD Radeon Fury X PCI-Express Scaling

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EarthDog

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Benchmark Scores Faster than yours... I'd bet on it. :)
I love these articles. I can't wait to see what SLI/CFx will bring... But I would see if you can use AT LEAST 980s. Don't go down on the level of card used. :)

GhostRyder said:
This still shows us how as long as you have Sandy-Bridge or higher (Heck even chips like the i7 920) you can still have games maxed out without worrying about PCIE performance scaling.
Click to expand...
Sorry, what does the CPU have to do with PCIe scaling? Did he test other CPUs that show different results? Curious as to where you pulled that assessment from... :)
 
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EarthDog

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Benchmark Scores Faster than yours... I'd bet on it. :)
That would be HUGE! I dont ever recall anyone doing that and always wondered if that scaled with more cards!
 
Keullo-e

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Ubersonic said:
Don't Nvidia restrict SLI to only 8x and 16x slots?
Click to expand...
IIRC at least 3-way supports x4 for the third card? At least for example some X58 mobos support x16/x16/x4 3-way SLI without the nVidia chip, like my old Asus P6T.

But officially I think also that x8/x8 is the minimum for (2-way) SLI.
 
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vargis14

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Well it looks like my 2600k and its 8x PCIE 2.0 will not hold me back at 3440-1440 anytime soon since I am using it now with 2 EVGA GTX 770 Classified 4GB cards and the performance is right up there with a single 980...maybe even a 980ti for the most part.

Luckily I have 2 Cherry Classified cards that with boost 2.0 they run at 1280mhz with 111% power target.
 
jaggerwild

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GhostRyder said:
This is a great read as its good to get some answers to questions many people ask when it comes to PCIE scaling.

This still shows us how as long as you have Sandy-Bridge or higher (Heck even chips like the i7 920) you can still have games maxed out without worrying about PCIE performance scaling.
Click to expand...



Sandy Bridge E(X79 chips set) had only PCI-E 2.0 had to hack it to make it 3.0, which the box says it had.
 
Aquinus

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jaggerwild said:
Sandy Bridge E(X79 chips set) had only PCI-E 2.0 had to hack it to make it 3.0, which the box says it had.
Click to expand...
My 3820 runs my 390 at 3.0 out of the box without any alteration to anything. Just saying.
 
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escapeclause

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Excellent article, thank you!

IB or RAID controller on second CPU-attached PCIe3 slot at x8 still makes sense.
 
manofthem

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Very awesome review W1zz, great insight and much appreciated by all! Looking forward to the next SLI one :)

Yeah, I missed this review til just now :oops:
 
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Mini0510

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geon2k2 said:
Please please please ... I'm very much interested to see what happens now that the crossfire bridge is gone. There are many users out there which have 16x+4x slots (both on 2.0 and on 3.0).
Click to expand...

I already tested this. I got about 90-110 fps with 290X crossfire in BF4 with x16 + x4. Then i switched to a SLI motherboard. I got between 120-140fps.
So without the bridge, 4x is a major bottleneck
 
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