What's better? DDRAM or SDRAM
- Thread starter DJSnairdA
- Start date
DDRAM is basicly just SDRAM with twice the bandwith, so DDRAM is way better than SDRAM, though in real world benchmarks you get about 10% performance boost over SDRAM
I'm waiting too (been waiting for around a month and a half). Just to clarify a bit, though, there are actually different types of DDR memory - PC1600 and PC2100. PC1600 RAM runs at a speed of 100 Mhz. (but, with "double" the performance - effectively 200 Mhz.), whereas PC2100 RAM runs at a speed of 133 Mhz. (effectively 266 Mhz.). Hope this further clarifies things.
Ok Thanks. I'm pretty sure i friend of mine got a DDR memory mobo.. but i'm not sure. I know that he got DDRAM for sure 
Although the "jist" of what people are telling you about the "bandwith" increase (etc...) of DDR SDRAM over SDR SDRAM is accurate, let me say that I think people like CZAR should have their "diamond" status taken away from them.
The one thing most people seem to FORGET or just plain DON'T UNDERSTAND about these two memories is THIS:
They are BOTH different TYPES of SDRAM. To call SDR "SDRAM" and "DDR" "DDRAM" is just plain misleading.
SDRAM is a TYPE of RAM- it is Synchronous Dynamic Random Access Memory
DDR is TYPE of SDRAM- it is Double Data Rate SDRAM; it can process data on both the rising and falling edges of a clock cycle; hence effectively doubling it's "speed" (if you will) over:
SDR which is another TYPE of SDRAM- it is Single Data Rate SDRAM and can only process data once per clock cycle as compared to DDR SDRAM and therefore is much "slower".
The one thing most people seem to FORGET or just plain DON'T UNDERSTAND about these two memories is THIS:
They are BOTH different TYPES of SDRAM. To call SDR "SDRAM" and "DDR" "DDRAM" is just plain misleading.
SDRAM is a TYPE of RAM- it is Synchronous Dynamic Random Access Memory
DDR is TYPE of SDRAM- it is Double Data Rate SDRAM; it can process data on both the rising and falling edges of a clock cycle; hence effectively doubling it's "speed" (if you will) over:
SDR which is another TYPE of SDRAM- it is Single Data Rate SDRAM and can only process data once per clock cycle as compared to DDR SDRAM and therefore is much "slower".
Just to make a point about the real world gains associated with DDR SDRAM, as well as other faster memory types such as Rambus: it appears from AnandTech's KT133A recent review that CPU architecture plays a large role in determining the effectiveness of increased memory bandwidth. Anand finds that the Pentium 4, for instance, appears designed specifically to both require and benefit from the large memory bandwidth provided by RDRAM. On the other hand, the Athlon seems to be more of a conventional CPU that utilizes a large L1 and L2 cache, a fast FSB, and a higher IPC (Instruction per Clock) rate to make it less dependent on memory bandwidth. The Athlon only sees a 5% performance gain in real world applications from DDR SDRAM -- the rest of the 10-15% gain often quoted in fact comes only from the faster FSB (266 MHz) of DDR SDRAM chipsets.
So yes, DDR SDRAM is basically twice as fast as regular SDRAM, but for significant real world performance gains, the processor needs to be designed to take advantage of increased memory bandwidth.
Modus
So yes, DDR SDRAM is basically twice as fast as regular SDRAM, but for significant real world performance gains, the processor needs to be designed to take advantage of increased memory bandwidth.
Modus
CompuGeekIAm,
<< Although the "jist" of what people are telling you about the "bandwith" increase (etc...) of DDR SDRAM over SDR SDRAM is accurate, let me say that I think people like CZAR should have their "diamond" status taken away from them. >>
Sheesh, lay off the guy. So he left a few letters out of the acronym. So what? Everyone understood exactly what he was talking about. We don't need the Geek Gestapo to set him straight. Some one once said:
"It is the height of intelligence to ignore details of no consequence."
I think it was Sir Arthur Conan Doyle speaking through Sherlock Holmes, who was quite amused at Dr. Watson's utter shock when he informed him that he had just learned the Earth revolved around the Sun, and that, seeing as how the information could not do him the slightest good in his occupation as a private criminal detective, he would do his best to forget it, so as not to cloud his mind.
Modus
<< Although the "jist" of what people are telling you about the "bandwith" increase (etc...) of DDR SDRAM over SDR SDRAM is accurate, let me say that I think people like CZAR should have their "diamond" status taken away from them. >>
Sheesh, lay off the guy. So he left a few letters out of the acronym. So what? Everyone understood exactly what he was talking about. We don't need the Geek Gestapo to set him straight. Some one once said:
"It is the height of intelligence to ignore details of no consequence."
I think it was Sir Arthur Conan Doyle speaking through Sherlock Holmes, who was quite amused at Dr. Watson's utter shock when he informed him that he had just learned the Earth revolved around the Sun, and that, seeing as how the information could not do him the slightest good in his occupation as a private criminal detective, he would do his best to forget it, so as not to cloud his mind.
Modus
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