Widescreen Gaming Forum

Hey folks, I am in the process of building a machine for work that will run with 4x 5570's, however due to the limited number of authed supplyers for work, I am limited on the choice of mobo's and gfx cards I can use.

As such I am currently looking at an AMD/ASUS (crosshair formula IV) mobo that sports 4 16x slots in a 16x,8x,8x,4x configuration.

So I just wished to know if a 5570 will function (admitedly not at full capacity) on 4x pci-e lanes.

I have read reports online stating that crossfire has been known to work on a 16x,4x configuration, however I am unsure if this stands true still for the 5x series.
If anyone could confirm this works I would like to hear from you, perhaps Dave Baumann or SunSp*t may be able to confirm this at all?

Many thanks.
Delph

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| Gigabyte X79S-UP5-WiFi Skt2011 | i7 4820k @4.4GHz Watercooled (Ivy Bridge-E) | Corsair Vengence 32GB @2133MHz 11-11-11-27 2T Quad-Channel (8x4GB) | AMD R9-Fury-X 4GB @1140/505MHz + EKWB Watercooled | 256GB Crucial MX200 SSD | 8x 1TB Samsung F3 SATA-II | Corsair 850W TX PSU | 3x Dell S2209W 22"wide TFT's (5760x1080res) | Logitech Z-5400 5.1ch speakers | Win7 Ultimate x64 |

I don't know the answer, but I'm curious what purpose this machine would serve as quadfire has been known to be massively unstable.

Not running quadfire, its just a highly multi headed machine.
I suggested a pair of 6x display port cards, but the budget does not cover this, nor does the limited list of supplyers supply this product.

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| Gigabyte X79S-UP5-WiFi Skt2011 | i7 4820k @4.4GHz Watercooled (Ivy Bridge-E) | Corsair Vengence 32GB @2133MHz 11-11-11-27 2T Quad-Channel (8x4GB) | AMD R9-Fury-X 4GB @1140/505MHz + EKWB Watercooled | 256GB Crucial MX200 SSD | 8x 1TB Samsung F3 SATA-II | Corsair 850W TX PSU | 3x Dell S2209W 22"wide TFT's (5760x1080res) | Logitech Z-5400 5.1ch speakers | Win7 Ultimate x64 |

Its not something we actively test for at an individual board level, but PCI Express operating on a reduced number of lanes is part of the specification. Techpowerup actually runs a few graphics cards tests looking at operation on reduced numbers of lanes, and here's one in the same family at the HD 5570:

http://www.techpowerup.com/reviews/AMD/HD_5870_PCI-Express_Scaling/

Many thanks Dave for the information and link, it looks like it should work out just fine :)

Cheers.
Delph.

_________________
| Gigabyte X79S-UP5-WiFi Skt2011 | i7 4820k @4.4GHz Watercooled (Ivy Bridge-E) | Corsair Vengence 32GB @2133MHz 11-11-11-27 2T Quad-Channel (8x4GB) | AMD R9-Fury-X 4GB @1140/505MHz + EKWB Watercooled | 256GB Crucial MX200 SSD | 8x 1TB Samsung F3 SATA-II | Corsair 850W TX PSU | 3x Dell S2209W 22"wide TFT's (5760x1080res) | Logitech Z-5400 5.1ch speakers | Win7 Ultimate x64 |

After building the system today I can confirm that all 4 cards function 100%, even the one in the 4x electrical socket. :D

_________________
| Gigabyte X79S-UP5-WiFi Skt2011 | i7 4820k @4.4GHz Watercooled (Ivy Bridge-E) | Corsair Vengence 32GB @2133MHz 11-11-11-27 2T Quad-Channel (8x4GB) | AMD R9-Fury-X 4GB @1140/505MHz + EKWB Watercooled | 256GB Crucial MX200 SSD | 8x 1TB Samsung F3 SATA-II | Corsair 850W TX PSU | 3x Dell S2209W 22"wide TFT's (5760x1080res) | Logitech Z-5400 5.1ch speakers | Win7 Ultimate x64 |