Posted 04 November 2007 - 01:12 PM
Different brands give you different values. Different materials, manufacturing techniques, quality control will vary the cost of an item greatly.
With processors you have 2 major manufacturers: Intel and AMD
Pentium (M or D), Celeron, Core 2 (Duo, Quad, or Extreme), Xeon, etc. are all different Intel processor models made by Intel and all offer different Value and Performance features.
AMD makes the Opteron, and others I can't recall at the moment and also offer a large number of performance and value options.
With processors you have the clock speed (ie 1.86gHz), you have single core, dual core, quad core and now dual quad core processors and to complicate things further you have many different types of each (ie e6300), each promising a different level of performance. In theory the more cores, the less stress you put on each processor, inturn allowing them to run at cooler temperatures and more efficiently.
ALL processors give you the specs if you look past the sticker on the front of the computer case.
RAM is manufactured by a much larger pool of manufacturer giving the buyer much more choice and confusion. I find looking for a reputable name is the first step.
RAM chips also aren't simply rated by size, they are also rated by speed or data rate and many more variables. You can have a 512mb chip with a speed of 133mHz and you can have a 512mb chip with a speed of 1066mHz that are vastly different in price and will not be compatable with the same computer (mobo).
These days they have added many features to RAM chips too, such as heat sinks and other cooling methods like forced air and water cooling systems (the cooler temperatures allow the chips to function more efficiently).
You will spend more if quality is what you're looking for, and the bottom line is you pay for what you get.
music, music music...