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NVIDIA A01 Spin of MCP55P
The next generation NVIDIA core logic aims to be the company's most ambitious yet

NVIDIA has been quiet about core logic since nForce4 x16 was launched a few months ago, but the company is rapidly approaching on final silicon for the MCP55 family.  MCP55, as we reported previously, is the nForce4 successor dedicated to Socket AM2/S1 motherboards.  Our sources in Taiwan have just confirmed with us that MCP55 spin A02 is available to manufacturers and is already implemented on working motherboards.  The A01 spin has been floating around on engineering samples since January.  Traditionally, A02 and A03 spins end up in the market place on retail motherboards.

Unfortunately, MCP55 is a far cry from a revolutionary chipset.  According to NVIDIA roadmaps, it contains a different audio codec, dual Gigabit Ethernet PHYs and can use six SATA channels instead of four, but the core logic is still hampered by the fact that it takes two chipsets to control a 2x16 SLI setup.  The majority of games today cannot take complete advantage of 2x16 SLI yet, but adding two Northbridges to the motherboard to enable 2x16 seems like an incredible waste of money (particularly when the interconnect between the two bridges is only exactly enough for than the actual x16 PCIe bus, even though there are other devices on the controller). 

ATI's still unreleased Xpress 3200 (RD580) core logic can support 36 PCIe lanes on the Northbridge.  Recent roadmaps revealed that a stripped down version of RD580, RD550, will compete directly with MCP55P with 2x8 PCIe lanes rather than a full 2x16 for multiple GPU support.

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who cares about sli,
By 8steve8 on 2/27/2006 2:47:18 AM , Rating: 2
well 6x sata is nice, especially for raid5 people...

as for 2xSLI, ppl who are buying two video cards can pay a few dollars more per mobo for an extra chip...

who cares.. i mean really what percentage of people actually have 2 video cards in their systems right now?

and the reality is a single video card is just about always a smarter choice per $. (and per watt)

RE: who cares about sli,
By dcollins on 2/27/2006 3:56:50 AM , Rating: 2
But, in reality, there's a lot of people that want the fastest, not the smartest. And, much of the draw of SLI from nVidia's perspective is the publicity; it looks good to have the most powerful solution regardless of cost.

And, beside, why would you buy a motherboard with such a limitation if you could find a similarly priced product that does not (i.e. an ATI chipset)? So much of the enthusiast market is about percetption.

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