i wouldn't worry about the paste. your brother's needs are not extreme computing and he's not going to put a lot of grind on the processor and generate such a significantly greater amount of heat that it couldn't survive the small difference between the different pastes.
satas are easier to hook up than IDEs, and they look better. they have a similar config, there's a power supply and the data cord. performance differential is, in most cases, negligible. hot-swappable, whoopie! there is a difference though between SATA and SATA 2.
i just built a box out of similar components, and came up with a lower price, using an AMD 3000+ 939 pin processor, which you can find on pricewatch for about $60. the heat averages around 30-32 C, with just the in case 12cm fan set to low, low, low. no heatsink. just msi board in an antec case. amd's generate less heat than pentiums and you get more bang for your buck. the other nice thing is the upgrade path is much longer than with Pentiums.
on core duos and high end stuff it's a different story.
if you're sold on the pentium option, you should be fine, in any case. i just wanted to try something new out, given my requirements and budget, i decided on the amd.
So it looks like I?m close to building a computer for my brother. His E-machine died after 3 years. I build a computer probably about 3 ? years ago and was my first one.
Things have changed some what sense I did it last. Probably the biggest is heat! So much more heat.
Really my main question is about finding a could step by step user guy that talks about all the newer advancements, 775 socket, SATA Drive, PCI Express. Most of the them I?m not to worried about, probably most the 775 socket. How is that different then others, is it hard to install?
Right now the list I have compiled is this
Intel BOX D945GNTLKR Socket T (LGA 775) Intel 945G ATX Intel Motherboard
Intel Pentium 4 531 Prescott 3.0GHz LGA 775 Processor Model BX80547PG3000EK
Kingston ValueRAM 512MB 240-Pin DDR2 SDRAM DDR2 667 (PC2 5300)
Western Digital Caviar SE WD1200JS 120GB 7200 RPM SATA 3.0Gb/s Hard Drive
LITE-ON 16X DVD

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