Via and SiS have given up on chipsets altogether, and Nvidia doesn't think AMD is interesting enough anymore.
not that that's a real problem, AMD's chipsets are perfectly capable.

AMD Wants to Control Compatible Chipset Business
[12/02/2009 12:18 PM]The head of Advanced Micro Devices products group – Rick Bergman – has confirmed that the company’s ultimate goal is to control 100% of AMD-compatible core-logic market.
For years Advanced Micro Devices has said that one of the advantages its central processing units (CPUs) have over competing Intel Corp.’s offerings is their broad support by chipsets from Nvidia Corp., Silicon Integrated Systems Corp., Via Technologies and so on. However, after the company acquired ATI Technologies back in 2006 and started to sell its own-brand core-logic sets, it became clear that AMD wants a piece of the chipset market to boost its revenue.
SiS and Via Technologies have not released any new core-logic sets for AMD platform for several years now, but, according to AMD, Nvidia Corp. still controls 43% of the AMD-compatible chipset market. AMD claims that this is going to change shortly and that the company’s goal is to have 100% of the market.
“[AMD’s] final goal is to see AMD's chipsets have 100% occupation on [AMD platform],” said Rick Bergman, senior vice president and general manager of AMD's products group, reports DigiTimes web-site.
Already next year AMD’s server and workstation platforms will be solely based on AMD’s own core-logic set and while the company will continue to rely on non-AMD chipsets on certain desktop market segments, it will replace them with its own offerings eventually.
It is logical for AMD to transit to its own chipsets in order to get additional revenue and profits amid decreasing market share of its central processing units. In the longer term core-logic sets will also be important for AMD to increase utilization of Globalfoundries, manufacturing joint-venture between Advanced Micro Devices and Advanced Technology Investment Company. In fact, AMD's intention to control 100% of compatible chipset market is inline with the strategy of Intel, which is unlikely to let anyone make chipsets compatible with processors featuring DMI or QPI busses.
Tags: AMD, Nvidia, Business, Nforce, Geforce
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