Continued…
Chipsets
Probably should’ve addressed this first, but I’ll do it now. While choosing a chipset can limit which options you get, it ultimately rests on what the motherboard company chooses to put up. Here’s a list of what to expect on Intel and AMD boards currently available:
Intel chipsets
Intel–Bar none, the best chipsets you can buy are from Intel. If you are nervous about conflicts and incompatibilities, I suggest going with an Intel CPU and a board featuring an Intel chipset. Typically, motherboards made by Intel do not offer as many frills as 3rd party solutions, although this is changing somewhat.
Current chipsets: i875 (Canterwood), i865 (Springdale), i848P, i925 (Alderwood), i915 (Grantsdale).
ATi–Yes, the same ATi making the Radeon X800 chips has a motherboard chipset out, and this time around, it’s actually pretty good.
Current chipset: Radeon 9100IGP
SiS–Up until recently, Sis has had mediocre products at best. Lately, their chipsets have been a solid and fast alternative to Intel’s own chipsets at a slightly lower cost. SiS is the official 3rd party chipset company for the Pentium 4.
Current chipsets: 655
ALi/ULi–Like Sis, ALi hasn’t been known for anything that’s been mind-blowing and Iwill has been about the only company producing any of their chipsets. Unlike the AMD side of things, ALi’s Intel chipsets haven’t received much press at all. I don’t have much info on these chipsets as I haven’t seen a whole lot to read up on.
Current chipsets: ???
VIA–Only a few motherboard companies are producing boards based on the P4X*** series. Recently, VIA has acquired the proper P4 licsence to produce a Pentium 4 chipset
Current chipsets: PT800 (single-channel DDR), PT880 (dual-channel DDR)
AMD chipsets
AMD–While CPU’s are a major part of AMD’s operations, they’ve gotten a few chipsets out that are one of the better solutions on the market. Unfortunately, the AMD760 and it’s variants (760MP, 760MPX) aren’t the speediest options around anymore. If you want an AMD chipset-based motherboard, it might be better to hold off until the AMD8000 chipset series launches with the Hammer/K8 processors.
Current chipset: AMD 8000 series (Opteron)
ALi/ULi–While not a major force in the AMD market, ALi’s Majik DDR 333 chipset has been making waves in the form of the Iwill XP333. It does have some problems and is not the fastest thing available, but people have been accepting it as a stable alternative to Via.
Current chipset: ???
nVidia–One of the two major players in gaming graphics, nVidia has stepped into the motherboard arena with the highly integrated nForce chipset. These chipsets offer some of the best integrated features seen yet and are on par with Via’s latest offerings. The one weakness is that they have a reputation to not overclock very well—which may not be a big deal for you.
If you are looking for a stable alternative to Via, the nForce may be for you.
Current chipsets: nForce 2 400(single channel), nForce 2 Ultra 400 (dual channel), nForce 2 Ultra 400Gb, nForce 3 Pro 150 (Athlon 64), nForce 3 250Gb (Athlon 64).
SiS–Their Pentium 4 market is strong, but the AMD sector has been relatively unexciting, and not really what I’d consider to be anything for a power user.
Current chipsets: 746FX, 755 (Athlon 64)
VIA–Right now, VIA is the biggest player on the AMD side of the chipset market. While they’ve taken some major flak for poor chipsets in the past, they’ve come back with some very solid offerings as of late. Of course, not everyone likes them (besides Intel :chk: ), so you will hear numerous jaded opinions on them. I’ve never had a problem with thier products, but this will vary from person to person. If you’re serious about overclocking, this is the best you can get.
Current chipsets:KT600, KT880 (dual-channel DDR), K8T800 (Athlon 64), K8T800 Pro (Athlon 64)
Expansion slots
ISA—Officially retired as a standard, but some motherboards do carry them because of niche market demands. These slots are 8- or 16-bit slots. Typically black and lie toward the bottom of a motherboard.
PCI—The 32-bit version that is seen on motherboards is, well, 32-bit. While there are variants of PCI, the main one that you’ll be looking at is the 32-bit, 33MHz version. It’s the jack of all trades when it comes to expansion card availability. However, faster variations are made because this PCI slot is an extention of the PCI bus and limited to 133MB/second, and can become a bottleneck for high-end SCSI controllers and high-end Gigabit NICs.
PCI Express (PCIe/PCI-E)—this is not the same thing as PCI-X. PCI-X is a 64-bit 100 or 133MHz slot seen on high-end server motherboards. PCIe is a newer PCI standard based on ‘lanes’ from the chipset. Each lane runs 250MB/s, which is nearly double of what the current PCI bus does. The first round of PCIe will have 20-24 lanes at it’s disposal, depending on the chipset. The more lanes allocated for a single PCIe slot, the more bandwith it has. Each PCIe 16x slots will leave 4-8 PCIe tunnels open for less bandwith hungry cards like sound cards. PCIe 16x slots will be the replacement for AGP, but in the end won’t really be any more effective since all it’s really doing is raising an pretty much untouched ceiling.
AGP slots won’t drop out of sight immediately. Although Intel’s upcoming i915 and i925X chipsets will drop AGP, several companies have previewed i915 boards with AGP. The reason they can do this is because the AGP slot is an overglorified PCI slot running at 66MHz (AGP 1x). How well it works remains to be seen. Via’s PT890 Pentium 4 chipset will officially sport both AGP and PCIe, for the record.
Because PCI and PCIe slots are different architectures, they will coexist on motherboards for some time.
BTX
BTX formfactor–Balance eXtended Technology. It is a new motherboard formfactor created by Intel and will be available later this year. However, it has recieved sharp criticism because of the way it doesn’t appear to do anything all that great—if anything. Additionally, AMD does not seem to be making any real effort to support this. While AMD is Intel’s rival, it appears that most motherboard companies are pretty much ignoring the standard. Possible reasons are that it doesn’t appear to really be all that great at dissapating heat like it’s been touted. Another problem is that it’s been cited as being a fix for the Prescott Pentium 4 core, which has some serious heat issues. Lastly, it’s rumored that the AMD 64-bit processor boards (both Socket 754 and 939) would be unable to fit the BTX spec.