Guide for activating SLI on AMD 890FX platforms

[Monstru]

You know matose, allways unlocking something, allways trying to open the doors that were closed by manufacturers.This time the subject is SLI on AMD 890FX boards, and we're talking about SLI, with 60-70% scaling numbers, not Lucid Hydra mixed multi-card. In this case, he used Asus Crosshair IV Extreme, and the PCI-E slots used were nr 1 and nr 3, that are connected directly to the chipset (in order to bypass the Hydra chip controlling the slots nr 2, 4 and 5.

Guide for activating SLI on AMD 890FX platforms - LAB501 - Google Translate

[SubZero.it]

Already present in the AMD section. And is not only for 890FX, but seems to work on all AMD chipsets

[Monstru]

Damn, I wasn't paying attention, a mod pls delete this thread then

[blindbox]

I don't think anyone has written a real guide.

[SubZero.it]

A real guide maybe not...but the tests made by chew are more than accurate

[Monstru]

Ahem, well enjoy the guide then

And yes, this works on any AMD chipset, 890FX was just the example for this.

[PatRaceTin]

very interesting

[Kuroimaho]

This is awesome, I could get a pair of 580 for SLI in my AMD gamng rig. Come on AMD pump out some caymans and let us choose.

Thanks Monstru I had no idea this can be done.

[Mechromancer]

Bump the thread in the AMD section please! I might go GTX460 1GB SLI (gotta Fold@Home ya know?)

[matose]

Thanks guys! I was surprised also that SLI works that good on AMD chipset, maybe even better than on nForce 980a

[zalbard]

Very nice compilation, thanks!

[570091D]

Bump the thread in the AMD section please! I might go GTX460 1GB SLI (gotta Fold@Home ya know?)

always appriciate new member in the folding team! please help out!


this is awesome news indeed! makes a 1090 very VERY tempting...

[Glow9]

Couple things, how is scaling vs. a 980a?

Also if it can be used on any platform can it work on a 870 platform which runs at x8 x4? If so since it's using SLI does it run at x8 x8 or still x8 x4?

[matose]

Also if it can be used on any platform can it work on a 870 platform which runs at x8 x4? If so since it's using SLI does it run at x8 x8 or still x8 x4?

It will run on AMD 870 at the maximum speed that is supported by the chipset. It doesn't make any wonders, just activated SLI

[TiN_]

It's for any chipset in general, just makes drivers think it's X58 rig to fool SLI

Authors guide
http://www.xdevs.com/eplugins/conten...php?content.30

[matose]

just makes drivers think it's X58 rig to fool SLI

Not only this, but also modifies the DSDT system table . I mentioned the authors in my article!

[TiN_]

And bypasses NVIDIA SLI patch detection crap Sure, thanks!

I mean by link that we trying to maintain sli-patch howto from us updated. Nothing against yours article :thumbs:

[SamHughe]

Interesting article but is it really a guide? From what I gather you (matose) have already developed the solution, so the guide is:
1- Download the patch.
2- Disable UAC, logon as an admin.
3- Run the patch.
4- Reboot your computer.

[Monstru]

The main ideea is that afaik nobody put this information in this form for AMD platforms, I remember the xdev's article on X48, that was like....godlike. I know that chew also ran the SLI on AMD. Now this is brought to a wider, less educated audience, in a few simple steps. Kindda like my "overclock the HD 5970 past 1000 MHZ guide" before the overclocking programs could do that

[SamHughe]

Sorry for the off topic.
My motherboard, Supermicro X8SAX does not support SLI even though it's a x58 chipset. I asked Supermicro about it and the answer I got was:

Hello Sam,

The two motherboards are optimized for different applications. The C7X58
is a desktop motherboard whereas the X8SAX is a workstation motherboard.
We've only done the SLI certification done by NVidia onC7X58. We didn't
do so on the X8SAX.

I wonder if this fix would work for me too. If not, it still should be fairly easy to enable SLI on this board.

What do you guys think?

[Leeghoofd]

monstru is a copycat :p, oh no wait, Monstru made matose do the copycat thingy :p

But thanks for the small guide guys, many will love it...

[matose]

I wonder if this fix would work for me too. If not, it still should be fairly easy to enable SLI on this board.

SuperMicro blocked the SLI from the BIOS (DSDT) so this patch will work perfectly for you too !

[tbone8ty]

hmm nividia should promote this since cayman is delayed haha that would be funny

[Monstru]

monstru is a copycat :p, oh no wait, Monstru made matose do the copycat thingy :p

But thanks for the small guide guys, many will love it...

I am a cat that makes other cats do copycat thingies while not copycating anything

[initialised]

Just got it running on a pair of GTX460 2GB on Gigabyte 890GPA after our last 750a board died.