The GA-M750SLI-DS4 is an AM2+ chipset that ships in a full-ATX form-factor. Harnessing the as-yet-unreleased GeForce 8200 IGP, the nForce 750i SLI board is equipped with dual PCIe x16 Gen2.0 mechanical slots that negotiate down to x8 electrically when run in SLI.
The onboard graphics can be paired with a low-end GeForce card for greater performance but, just as cleverly, can be activated in lieu of a discrete card when running basic 2D apps.
The AMD AM2+-based nForce 780a SLI will do battle with AMD's very own 790FX as the platform of choice for the enthusiast looking to run, most likely, a Phenom CPU.
The HT3.0-toting GA-M780SLI-DS5 supports both the tri-core and quad-core varieties of the Phenom processor, naturally, and the chipset's native x16 Gen1.0 PCIe link is augmented by the nForce 200 ASIC that's hiding under the left-hand heatsink. The NF200 then provides a couple of x16 Gen2.0 PCIe slots for possible three-way SLI.
What's more, look at the I/O section and you can see DVI and D-Sub outputs. NVIDIA is adding its Hybrid Power technology - integrated graphics, GeForce 8200, as per the 750 above - that can also be switched on in lieu of power-guzzling discrete cards when viewing basic 2D images.
Phenom CPUs - due for release at the end of the month - should be able to pair with four-GPU CrossFireX or three-GPU SLI.
Switching gears to the NVIDIA nForce 790i SLI for Intel LGA775 CPUs, Gigabyte's GA-790SLI-DQ6 supports dual-channel DDR3-1333 memory and dual-LAN teaming.
What's interesting here is that the bridgeless board supports four mechanical x16 PCIe slots - two are native Gen2.0 (x16 electrically) and the other pair (x16 and x8 electrically), running off the southbridge, are Gen1.0
