The more RAM you have, the more information can be processed at a time. In terms of Blockland, more RAM = more bricks. 8GB of RAM with an i7 processor would work beautifully, while 4GB with an i7 would be limiting of the processor. All this is, of course, assuming your operating system can utilize all the RAM. For instance, my 64-bit Windows 7 can utilize all of my 4GB of RAM. 64-bit operating systems can use more RAM than 32-bit ones.
This paragraph is all kinds of wrong. Please don't listen to it besides what he said about the 64-bit OS.
RAM does not affect the processing capability of your CPU and 4 GB is a satisfactory amount for most common applications. Simplified, RAM stores blocks of data that can be accessed at a later time rather quickly. The speed of the data input has no significant impact on the ability of your processor to output(in simple models anyway). If you aren't actually using the RAM having more will have no performance gain.
If your RAM can be accessed in one time unit and your processor can output in half a time unit it doesn't matter if the info is coming in at three time units instead, your processor will still be able to output in half a time unit. Of course this affects
overall system performance, but not the CPU's capability to perform as intended. This is unless of course you start inputting data at a faster rate than your processor can handle, this isn't an issue though as CPU frequency response is much much greater than RAM modules and on common system configurations RAM is automatically synched with the CPU clock to prevent anything like that from occuring.
get a 9800gts nvidia card its (I have it)it can play all that you want and is only $50-$100
That card is old as stuff, shut up.
As for motherboard suggestions, just get whatever is cheap from a good brand like Gigabyte, Asus, EVGA, MSI, other crap. The more expensive ones have better ICs and features that you won't be using most likely so no need to drop the cash.
