A question about DDR, DDR2, Dual Channel and Dual Core CPU...?

Question

This actually a question about a question. Somebody asked a question, I gave an answer, someone else said my answer was wrong, his was chosen best answer and I commented on why I thought mine was right. Now I'm wondering who was right. So to any computer experts out there, which of us is right, here is the question http://answers.yahoo.com/question/index;_ylt=Am_OA38G.3bCIxyhG.wIt7Tsy6IX?qid=20060929211938AA3c8vW

Again dreamopalms, I must disagree with you since the main point of your argument is that dual channel mode is the main advantage of DDR2, because dual channel mode is available on plain DDR.

The argument about clock speed being canceled by latency is false. Although latency is higher on DDR2, they much higher clock speeds of DDR2 easily overcome the latency problem. A 533Mhz DDR2 with higher latency might perform equal to a DDR 400Mhz with lower latency, but an 800Mhz DDR2 will blow away the DDR, even with a high latency.

Answer 1

Hi, I don't know why that other guy's answer was chosen as best however, there are some faults in his answer. So just let me try answering the previous question.

First, DDR2 is faster thatn DDR1 and will replace DDR1 technology.
Second, DDR2 is not backward compatible. This implies you can not put DDR2 on the same system board where you put DDR1... not possible at all.
Third, compatibilty with Dual core CPUs... That's crap. DDR1 and DDR2 both work with both kind of processors. Its just that dual-core CPU and DDR2 both are faster than their previous avatars that you feel perfomance difference.
Below combinations work Just fine:

Single core proc - DDR1
Single core proc - DDR2

Dual core proc - DDR1
Dual core proc - DDR2

So this would imply that u infact were right!

Answer 2

ddr 2 ram is faster then ddr because it is operating at a higher frequency, that guy is wrong as far as saying that having ddr2 but not having a dual core processor will due you no good, i have a pentium 4 H/T, but i have ddr2 dual channel and my ram is operating at 1300 MHZ, the fastest ddr in dual channel operates at 800 MHZ

Answer 3

i was the one with the best answer in this question, dual channel ddr2 memory will only help if you have a dual core proc because the main advantage is that it can operate in dual channel mode meaning that it will allow for multiple threads to addres it at once just like a dual core processor, also there are very few processors that are not dual core or hyperhtreading that support ddr2, so a lot of motherboards/chipsets don't suppoert ddr2, it even has a different socket and more pins, ddr2 may have a higher clock speed, but it also has a higher latency, so it cancels itself out in that area of speeed, don't get me wrong, there are a few other architectural advantages to ddr2 like the fact that memory can be addressed cell by cell not as a whole aiding to the seek time of it and lower power consumption/heat so it does have its advantages, and it does have everything to do with dual core procs

sorry, we seem destined to be mortal enemies, I also had the ,agp 8x/4x question, but that guy posted that question like 3 times in diff places, so i must have answered a different one, because io was not referring to you as being an a!!hole, i did not even see or copy your answer

also prahsnat p, i am not saying that it is completely incompatible with all single core procs, i am saying that it strted becoming popular just as dual core procs became popular at the same time, so there were very few single core procs that supported it, and it does not provide that much of an advantage for single core with intel the support depends on the chipset, with amd the support for it depends on the processor and motherboard slots for it, intel was the only one that was still making single core procs that supportrd it, amd single cores never did

also jamie 7177 ddr memory operated in dual channel mode but more like a raid 0 in that it took the whole chink of data but 2x as fast because it spread it out over 2 banks, ddr2 can be adressed by 2 separate pices of data at the same time or take iut as a hole chunk like ddr1, also the clock advantage is almost cancelled out by the higher latency disadvantage, i am not saying you will not see ANY advantages from ddr2/single core proc