Who are you ? 25 year old teenager still sitting in high school ? Please mind your words, otherwise you appear quite uneducated to others ... if that's not your intention, that is.
a)
VIA's chipset division is dissolved and merged with the CPU division:
http://www.xbitlabs.com/news/chipsets/display/200801030959 4_Via_Chipset_Market_Withdrawal_Rumours_Resurface.html
So officially, there is a chipset devision, correct, however the engineers already left last year:
http://www.xbitlabs.com/news/chipsets/display/200709070725 6.html
Granted, there are "some" engineers left at VIA, however as it is already mentioned here, a small chipset business without high volume is a burden:
http://www.xbitlabs.com/news/chipsets/display/200801030959 4_Via_Chipset_Market_Withdrawal_Rumours_Resurface.html
Therefore it makes sense to cancel the chipset division an use some low cost nvidia chipsets. However, this just makes sense, if nvidia could easily reuse intel chipsets, otherwise a 3rd party chipset development would be even more expensive than in-house development.
and indeed ....
b) the V4 bus is mechanically based upon AGTL+ bus. The hardware is compatible, differences are on the protocol level, only.
http://www.xbitlabs.com/news/mobile/display/20050518045045 html
Just think about it, why should VIA reinvent the wheel ? They just have to avoid patent infringements. That is easily done by using a slightly different protocol. It was the same in the late 1990s with the Cyrix cache bus, using a linear burst, vs. Intel uses a patented interleaved burst:
http://www.freepatentsonline.com/5862154.html
There are also VIA chipsets available which support both, Intel AGTL+ & VIA V4 bus:
http://www.xbitlabs.com/news/mobile/display/20050817203056 html
Do you really think that there are two totally different chipsets in the package ?
cheers
Alex
[Posted by: Alex | Date: 03/29/08 08:03:40 AM]