No hybrid sli on gtx285/gtx295?

[MarcVenice]

Yes or no, or don't know will suffice

Thx

 

[AmberClad]

Yes?
Maybe?

 

[nosfe]

No?

 

[MarcVenice]

Awesome, swift responses and completely to the point.

Fudzilla isn't the only one reporting gtx285/gtx295 can't do hybrid sli, but leadtek's website saying their card can do hybrid sli makes things a little more complicated.

 

[AmberClad]

Either way though, I've read that MS doesn't care for the technology, and Windows 7 is going to do away with Hybrid SLI / Hybrid Crossfire support.

Oops...that wasn't a one word answer ...

 

[MarcVenice]

You read?

Any extra information is of course appreciated. I just didnt't want to start a useless discussion about wether it's a usefull feature or not

And how would Windows do away with it exactly, and why? Isn't it driver-related? I think it works for notebooks, but if a monitor has to be plugged into the motherboard too for it to work, it does become pretty useless

 

[AmberClad]

Originally posted by: MarcVenice
And how would Windows do away with it exactly, and why?

The same way they did away with support for using both an ATI and Nvidia card simultaneously in Vista I'm guessing? In this case, the Forceware drivers for the discrete GPU are distinct from the nForce drivers for the IGP, I assume. (Lotta guesswork on my part.)

As for why -- it's Microsoft. Their reason for it is that the technology is "unstable" or something along those lines.

 

[nosfe]

i guess that nvidia lost interest in it after intel forbid it from making i7 chipsets

 

[MarcVenice]

Ah, but you've no link? Pm me perhaps?

Thx

 

[AmberClad]

Link? Sure: here's a link
.
.
.
Ok, ok, I'll stop being an ass. Here's a real link .

 

[MarcVenice]

Thanks Amber

 

[apoppin]

http://www.custompc.co.uk/news...le-says-microsoft.html

it sounds like ms is listening to intel

on a related note, wasn't Focus Group going to give us the last word if you can SLi gtx280 with gtx285 ?

 

[SunnyD]

Originally posted by: AmberClad
Either way though, I've read that MS doesn't care for the technology, and Windows 7 is going to do away with Hybrid SLI / Hybrid Crossfire support.

Oops...that wasn't a one word answer ...

Hmm... Microsoft is saying "no native support for". That doesn't mean Windows 7 will not support it, seeing how no version of Windows currently natively supports it anyway. It's the driver that supports it, and those aren't in Microsoft's hands.

By the way, unless I'm mistaken, Windows 7 and WDDM 1.1 are supposed to allow multiple video drivers to be installed now. I should enable my onboard graphics and see if that's true.

 

[thilanliyan]

Originally posted by: SunnyD
By the way, unless I'm mistaken, Windows 7 and WDDM 1.1 are supposed to allow multiple video drivers to be installed now. I should enable my onboard graphics and see if that's true.

It does work I think. I tried a 8800GT with my 4870 and it installed both drivers fine. I was trying to get PhysX to work but apparently you have to have the monitor connected to the nV card to enable hardware PhysX. I've read that programs such as Badaboom worked with a separate nV card in an ATI system with Win 7 though.

 

[SunnyD]

Originally posted by: thilan29

Originally posted by: SunnyD
By the way, unless I'm mistaken, Windows 7 and WDDM 1.1 are supposed to allow multiple video drivers to be installed now. I should enable my onboard graphics and see if that's true.

It does work I think. I tried a 8800GT with my 4870 and it installed both drivers fine. I was trying to get PhysX to work but apparently you have to have the monitor connected to the nV card to enable hardware PhysX. I've read that programs such as Badaboom worked with a separate nV card in an ATI system with Win 7 though.

Which nvidia driver are you using? The WHQL drivers from Windows Update (for Win7) don't support PhysX. The Vista drivers that do support PhysX "might not" work since they're WDDM 1.0 drivers (thus conform to the Vista 1-driver spec).

 

[chizow]

Its not surprising that Nvidia has dropped support for high-end parts. Keep in mind, the point of Hybrid SLI originally was to 1) reduce power consumption in idle/2D and 2) boost performance with "GeForce Boost", SLI betwen an mGPU and discrete GPU.

Nvidia has already taken care of 1) by cutting clocks and power to the GPU at idle/2D on its high-end parts and 2) was never a solution aimed at the high-end parts, as SLI performance is limited by the lowest common denominator, the mGPU. The only thing the mGPU might've been useful for is PhysX, which should still be possible, but I believe benches with slower GPUs for PhysX actually hinders performance more than it helps.

 

[taltamir]

Originally posted by: AmberClad

Originally posted by: MarcVenice
And how would Windows do away with it exactly, and why?

The same way they did away with support for using both an ATI and Nvidia card simultaneously in Vista I'm guessing? In this case, the Forceware drivers for the discrete GPU are distinct from the nForce drivers for the IGP, I assume. (Lotta guesswork on my part.)

As for why -- it's Microsoft. Their reason for it is that the technology is "unstable" or something along those lines.

speaking, support for different card types supposedly is coming back in windows 7