Hell Freezes Over: NVIDIA Announces Native SLI Support for the Intel X58 ChipsetOf course NVIDIA would wait until I physically left NVISION 08 to actually make an interesting announcement, but there’s no bitterness, I swear
The big, no, huge news from today? NVIDIA is enabling native support for 2 and 3-way SLI on Intel X58 based motherboards...without the use of any nForce 200 chips.
It’s not as simple as simply enabling SLI support on X58, NVIDIA wanted to both ensure compatibility and additional revenue, so there’s a certification program.
Any X58 motherboard maker can submit their board for certification, which will be done by NVIDIA. If the board passes, and the motherboard manufacturer agrees to pay a certification fee (NVIDIA would not reveal how much), then the board is certified and NVIDIA provides the board manufacturer with a key to place in its BIOS.
When you install the NVIDIA drivers, they check for the presence of this key in the BIOS - if it’s found, then you get the ability to enable SLI, natively, on X58. Note that this won’t work on any other Intel chipsets, just X58 for Nehalem owners this fall.
This is absolutely huge because it does mean that with the right motherboard you can now have both CrossFire and SLI support, without resorting to an OEM system or something more exotic like Skulltrail.
You can run X58/SLI with either two or three cards (a pair of GX2s will work but you can’t use four individual cards in SLI). 3-way SLI + 1 card PhysX acceleration is supported as well.
If you absolutely want the highest bandwidth possible, 3 PCIe x16 slots are only supported using nForce 200 chips, otherwise you’re stuck with two x16s or one x16 and two x8s.
The nForce 200 route seems quite silly due to the added cost and power consumption but the option is still on the table.
Why is NVIDIA doing this?NVIDIA was clear in mentioning that it will continue to design chipsets for Penryn based platforms, but it will not be making any QPI enabled chipsets for Nehalem. Thus, with Nehalem, the only way to get SLI support would be to use an Intel chipset.
Note that NVIDIA will be making LGA-1160 based Nehalem motherboards (dual-channel DDR3) for the low end and mainstream markets, but that platform isn't expected to debut until late 2009. LGA-1366 based Nehalem systems (dual/triple-channel DDR3) are the ones launching this year and the ones that NVIDIA won't have a chipset for.
NVIDIA originally expected OEMs to use its nForce 200 chips to enable SLI support on X58, however we heard from the very start that most motherboard manufacturers weren’t going to use the nForce 200 + Intel X58 combination. If NVIDIA wanted to offer SLI on Nehalem, it would have to open it up to all X58 motherboards, otherwise AMD could actually gain a multi-GPU advantage by being the only multi-GPU technology natively supported by Nehalem.
The timing of the announcement is very last-minute. Most motherboard manufacturers weren’t even aware that NVIDIA was opening up SLI to X58 until tonight, they received phone calls shortly after NVIDIA briefed us earlier this evening.
NVIDIA is committed to enabling X58 SLI motherboard support by the time Nehalem launches later this year. We were also told that while Intel’s own X58 motherboard isn’t currently on the certified list, Intel is more than welcome to submit it for certification.
NVIDIA went even further to say that if we were previewing any X58 motherboards that hadn’t yet made it through certification, that it would work with us to get our hands on a driver enabling SLI on the motherboard. It remains to be seen how easy it will be to simply hack in support for SLI on any X58 motherboard, regardless of certification status.
And there you have it: in response to the complaint of no-new-news out of NVISION 08, NVIDIA dropped the biggest bombshell of them all - native SLI support on X58. While I’d like to see top-to-bottom SLI support regardless of chipset, this is most definitely a good start.
FONTE:
http://www.anandtech.com/cpuchipsets/in ... i=3395&p=1 
etc.
