IB + Z77 + 3 Way SLI...where is it working?

[SoF]

Hi,

I spent 2 days messing around with 3x 580 GTX but no way to enable Tri-Way Sli in the drivers...

CPU: 3770K
Board: Asus Maximus V Formula
RAM: G.Skill Ripjaws

OS: Win 7 64bit, 32bit, Vista 32 bit

Driver: 285, 295, 301 DAWHQ(F)LUCK

Just show me some board with space enough that is working - I'm on it ^^

Wanna sandwich my 580 ref between matrix...so 3 slots for 1st card, 2 for snd, and 3rd card don't give a damn...

Btw: Manual of the Formula only mentions SLI-config but 3-Way CFX...strange

EDIT:

List of Z77 mainboard with undocumented feature of 3x SLI by HyperSli

Asus Maximus V Formula
ASRock Z77 Fatality Pro

[sin0822]

Get a board with a PLX8747, without the best you can do is 3-way CF>

you only have 16X PCI-E 3.0 lanes there, you can't run SLI with 4x in any slot of the major GPUs

[snappy1]

Originally Posted by sin0822

Get a board with a PLX8747, without the best you can do is 3-way CF>

you only have 16X PCI-E 3.0 lanes there, you can't run SLI with 4x in any slot of the major GPUs

Um, you can... I was running GTX 285 tri sli yesterday on a Z77 Fatality Pro which doesn't support tri sli.

Install the Hyper SLI hack for skt 775, use two small flexible bridges and one vey long flex bridge, no problems

[SoF]

That was a VERY helpfull trick - running perfectly now

http://www.awardfabrik.de/images/sto...tage_46346.JPG

[snappy1]

Originally Posted by SoF

That was a VERY helpfull trick - running perfectly now

http://www.awardfabrik.de/images/sto...tage_46346.JPG

Nice result...saves spending an extra couple of hundred on a new mobo

[sin0822]

ahh nice i didn't know you could do that.

[SoF]

Originally Posted by snappy1

Nice result...saves spending an extra couple of hundred on a new mobo

Yeah, thanks again for the hint!

For many old benches 1x or 2x is more effective but I am not sure what happens to 3DM03 past 6500

Also there are still categories in the bot for 3x so let's give them a nice bump with IB

[K404]

Are any special tricks needed with HyperSLI to get tri-SLI working? I just tried it on my UD3H and could only get SLI working Third slot is never included in the SLI and is only running at x1 ???

[sin0822]

he third slot on the UD3H is routed to the PCH NOT the CPU, the UD5H has it routed to the CPU. What is what you need.

You can try asking Pro, i think he got it working at some point.

[K404]

I know next to nothing about multi-GPU configs because I spend so little time with them Am I right in saying that Crossfire doesn't care how the PCI-E lanes are connected, but SLI does?