OK, here is my spin on this thread. Tommie, you are anxious to jump in to computing, which is fine. However, there is no shortcut to knowledge. If someone told you which MBoard to buy and you did that the next thing would be what components to put with it. Then how to configure it. The Motherboards you are looking at are all what are called enthusiasts boards. As such they are much harder to get up and running with any stability. You would be better off building a system based on stable components FIRST and experiement with that. In the meantime Google for reviews on each of these boards and you may learn alot from that. The DFI site should have comparisons on thier product line. Without even looking at the specs of these individual boards much is revealed, if you know how to read the labeling system most vendors use. NF3 = nForce3 chipset = 32bit processor NF4 = nForce4 chipset = 64bit processor SLI = nforce setup for 2 graphics cards that work together. CFX is ATI's 2 card system. Get the idea? You need to walk before you can run or you will get hurt.

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1st of all, I agree with most of what OtheHill wrote, especially in regards to 'enthusiast boards'. A slight correction is that the nForce3 does support 64-bit CPUs. "what is the best dfi sli motherboard s939?" Before getting too deep into it, why are you choosing the S939 platform over the AM2? Don't get me wrong, the S939 is a decent & fast setup, but it's run it's course...there will be no newer CPUs developed other than what are currently on the market. Also, the S939 uses older DDR RAM. The AM2 platform & CPUs are still being developed, plus it uses newer (& much cheaper) DDR2 RAM. And IMO, SLi & Crossfire setups are a complete waste of money. Not only do you need 2 video cards, but you'll also need a high-power PSU that's capable of handling the 2 cards, not to mention the rest of the hardware. It certainly doesn't hurt to run a board based on an SLi chipset, but I'd think twice about actually using the SLi feature. Getting back to your list...you can throw out the CFX, RDX200 & NF3 based boards & just concentrate on the nF4 Ultra & nF4 SLi based boards. And like I said in response #5, you have to "look over the features". In other words, compare the spec list for each board looking at RAID support, PATA & SATA connections, LAN chipset model, sound chip model etc & decide what you need/want. Also, some boards are more overclockable than others but you won't know which is best unless you google up some hardware reviews. Take your time & do some research...don't jump into anything without doing your homework. DFI's Infinity series is another possibilty. They're usually a bit cheaper, comparable in performance & easier to configure. There are other manufacturers to consider as well...Asus, MSI, Gigabyte...even Biostar or ECS.

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jam, I didn't say that nForce3 supported 64bit chips.

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"jam, I didn't say that nForce3 supported 64bit chips" I know...you inferred that it doesn't support 64-bit chips: "NF3 = nForce3 chipset = 32bit processor" I just wanted to correct that because the nForce3 chipset DOES support the Athlon 64 & Sempron 64.

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My apoligies jam. I nned to read more carefully.

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