DDR II memory Vs current DDR memory

[computer]

Does anyone know if current P4 DDR mobo's will be able to support DDR II (and is DDR II the new *quad pumped* DDR)? If not, is this something worth waiting (how long?) for to buy a P4 board that supports DDR II?
Thanks.

 

[BeefcakeVA]

I can't see how the current boards will be able to support DDR-II as that would require a whole new memory setup. And no, waiting is not worth it as DDR-II will probably not make it's way into the even sem-affordable mainstream until 2003 at the earliest.

 

[Zugzwang152]

I've heard many conflicting arguments on DDR-II on previous threads. I believe that DDR-II is just an upgrade to DDR, and that only the BIOS needs to support it...as for quad-pumped, do you mean dual-channel DDR-II?

 

[computer]

I'm not sure, I've heard of DDR II and quad pumped DDR. I'm wondering if they are the same thing only being called two different things. Is DDR II and quad pumped DDR the same? If not, which is superior?
Thanks.

 

[Zugzwang152]

DDR-II is an upgrade to DDR. dual-channel DDR-II is et up so that there are two channels for the cpu and ram to communicate on, which i believe increases performance of the memory by about 20-30%...that it?

 

[computer]

So, the correct terminology is DDR II and Dual channel DDR II, and the latter is superior? Which then brings up; when is dual channel DDR II due out and will IT be able to be used on current DDR mobo's?

 

[SexyK]

As far as I know DDR-II is not pin compatible with DDR, so no motherboards out there now will be able to support DDR-II. Not to mention that a new memory controller will be needed anyway. Don't bother waiting, if you need a system anytime soon just get a good DDR motherboard.

Kramer

 

[Zugzwang152]

Yep, definitely not worth it. Just go for high quality DDR now. Dual-channel for sure will definitely not be compatible, as it is a motherboard feature.

 

[computer]

I just found this, but still don't see anything about pins.

A panel of 120 companies approved the spec at a recent meeting in Tokyo. JEDEC officials said initial samples of the DDR-II chip should be available in 2002, with production coming nine to 18 months later. DDR-II is expected to be lower voltage at 1.8V, with speeds up to 533MHz. The chip is also expected to be optimized as memory for both PC and handheld devices.

As part of the preliminary spec, JEDEC approved 400 and 533MHz DDR chips. Comparable DDR memory modules would carry the PC3200 nomenclature for a 3.2Gbyte/s bandwidth using the 400MHz chip, and PC4300, with a bandwidth of 4.3GBytes/s for the 533MHz chip.

JEDEC officials said the memory panel will now turn its attention to a DDR-III specification for a chip to follow in the 2004 to 2005 time period. Sources said DDR-III could be combined with the work of the Advanced DRAM Technology industry group, which includes Intel Corp. and a number of leading memory makers.

Ah, here we go:
With a different package and more bandwidth, DDR-II modules will have more pins than the 184 found in today's DDR-I dual-in-line memory modules ? probably more than 200 pins. Macri said there is a development push for a single DIMM that will support either chip, and that DDR-II chips will be fully compatible with their predecessors.
Link