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DDR3 Memory Standard Set

post #1 of 32
Thread Starter 
Memory standards association confirms a spec that it says will boost performance and reduce power.


Quote:
The new DDR3 -- Double Data Rate 3 -- standard, gives a big performance improvement and should reduce power compared with to the DDR1 and DDR2 memory schemes, according to the standards group which made it.

JEDEC, the memory standards association, expects the new standard to be widely adopted. DDR3 is a standard for SDRAM -- Synchronous Dynamic Random Access -- memory and specifies a 1.5 volt power supply. DDR1 drew 1.8 volts and DDR2 2.5 volts. DDR2 clocked the memory bus at twice the memory cell speed to trade off an increase in memory cell latency against an overall increase in memory throughput. DDR3 clocks the memory bus at four times the memory cell speed to make the same trade-off but this time with a lower power consumption. DDR3 has an 8-bit wide prefetch buffer; DDR2's is 4 bit; and DDR's is 2 bit. DDR3 should win out over DDR2 where large amounts of data have to be transferred in and out of memory.

Joe Macri of AMD, the relevant JEDEC group chairman, said: "The DDR3 standard represents the culmination of countless hours of collaboration between memory device, system, component and module producers. This standard will permit emerging systems to achieve greater performance, storage and functionality, consistent with the needs of an increasingly information-intensive world community."

The DDR3 standard is intended to operate over a performance range from 800 to 1600 MT/s (million transfers per second) and device densities from 512 Mb to 8 Gb in monolithic and stacked packages. These could dramatically increase RAM capacities in PCs and mobile phones, better supporting, for example, a move to 64-bit PCs.
[Source: PC World]
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post #2 of 32
now what i dont get is: why does it take so long for DDR3 as system memory to mature, while its been used on video cards for a long time already? capacity? or is graphic-card memory just crappy?
post #3 of 32
Thread Starter 
Quote:
Originally Posted by ChielScape View Post
now what i dont get is: why does it take so long for DDR3 as system memory to mature, while its been used on video cards for a long time already? capacity? or is graphic-card memory just crappy?
Now! Don't get confused between DDR3 & GDDR3 (similar name but an entirely dissimilar technology)
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post #4 of 32
some cards have DDR3 according to specs. is that just mistake on their side then?
post #5 of 32
Quote:
Originally Posted by ChielScape View Post
some cards have DDR3 according to specs. is that just mistake on their side then?
Most likely, as distributors have some person type in the info that they get on their website.

Mistakes are commonly made.
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post #6 of 32
i see. thanks.
and thats how you learn something new every day. rep for both.
post #7 of 32
Quote:
Originally Posted by ChielScape View Post
some cards have DDR3 according to specs. is that just mistake on their side then?
They are all GDDR, GDDR2, GDDR3, or GDDR4.

Nice to see this info. DDR3 should be the mainstream soon.
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post #8 of 32
Now now... To build the next rig with DDR3 or very good DDR2... Is G.Skill producing DDR3 yet?
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post #9 of 32
at the minute its best to use ddr2 as ddr3 timings are very loose but this will get better as drr3 develops
post #10 of 32
Damn, I'm not changing my whole motherboard just to run DDR3, I'll go up to DDR2 1066 one day as it is supported, that will be good enough.
    
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