Linked by Rayiner Hashem on Tue 15th Nov 2005 17:44 UTC
Apple I recently bought one of the new dual core PowerMacs. Having used the machine for a couple of weeks, I thought I would share some of my observations and feelings about it. First, let me get my biases out in the open. I have, for about four years, very happily used Linux on my desktop. Doing so has made me very comfortable with the UNIX environment in general, and with GNOME specifically. During that time, I have used OS X machines on a regular basis, so I am quite comfortable in that environment as well. Since I switched to Linux, I have not used Windows for anything more than the occasional bit of software testing or lab work, and generally feel quite uncomfortable with it. Thus, this article is very much written from the perspective of someone who finds OS X and Linux pleasing on principle. I implore the reader to make his own value judgments based on my comments.
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rayiner
Member since:
2005-07-06

The only person with an Asinine stance is you. Define premium?

For the sake of argument --- let's define it in terms of cost. Premium RAM = RAM that costs more.

Also, I'd point out that the differences in premium DIMMs doesn't just come from "overclocking". They use much better PCBs with more layers (6-8) than most generic sticks (which use 4). They bin chips that will run at tight timings (CAS2 for DDR, CAS3 for DDR2), instead of the standard JEDEC timings. They also cost more.

Reply Parent Score: 1

Arun Member since:
2005-07-07

[i]Also, I'd point out that the differences in premium DIMMs doesn't just come from "overclocking". They use much better PCBs with more layers (6-8) than most generic sticks (which use 4). They bin chips that will run at tight timings (CAS2 for DDR, CAS3 for DDR2), instead of the standard JEDEC timings. They also cost more.[i]

The Samsung DIMMS are CAS3 for DDR2 400 which is what the memory controller on the X2 supports. It is CAS4 for DDR2 533.

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rayiner Member since:
2005-07-06

The memory controller in the X2 supports DDR400, not DDR2. The Athlon64 depends on low-latency memory --- DDR2 is not a good fit for it, at least until it gets up to DDR2-667 or DDR2-800.

The fact that the Samsung DIMMs are CAS3 for DDR2-400 is irrelevant. Nobody uses DDR2-400, and its easy to get chips that run at tight timings when you lower the clock-speed like that (note, DDR2-400 implies a 100MHz memory chip --- DDR-400 implies a 200MHz memory chip). High-quality DDR2 runs at CAS3 at 533 or even 667.

Reply Parent Score: 1