To add comments or start new threads please go to the full version of: 1Gbps DRAM
PhysOrgForum Science, Physics and Technology Discussion Forums > News discussions > Electronic Devices News

ap2
http://www.physorg.com/news3081.html

Am I wrong, or this type of memory is already used in graphics cards??
Matrix
hello,
the news says its DDR3 ram, 80nm technology, and first expected to be sold at 2006,
i don't think they are in video cards
ap2
http://www.nvidia.com/object/IO_14167.html

QUOTE:
... the NVIDIA Quadro FX 3400 features 256MB G-DDR3 frame buffer memory, a 256-bit memory interface, 28.8GB/sec of memory bandwidth ... unsure.gif
Zorlont3
#1 The memory used in graphics cards is not the same as what we use as system memory. I am not sure of the specs on both, or the exact differences, but I can assure you that they are differnt. As for DDR3, WOOHOO! Good to hear this news, its sad however, because DDR2 isn't even up to speed yet. If we get lucky, they will skip DDR2, and add DDR3 support to motherboards! This new memory should get things done much faster...!
Guest
memory used in graphics cards is identical to system memory. What the article says is that the first ram sticks that you can plug in the RAM slot in your motherboard would come out in 2006. Even though ddr3 ram exists for some time now in order to build a successful ram stick you also have to design the board that those ram chips would me mounted on. The problem with the current boards (not the motherboard but the board for the stick) is that they not exactly transfer date as fast as ddr3 does and there is interference and other problems.

The only difference in the memory of videocards and system ram is the way that the chips are connected. For one thing your ram works in 64 bit configuration (128-bit in dual channel) and your video card works in 64/128/256 bit configuration. You basically have more channels for your video memory and higher data processing capabilities. Plus there is also no memory controler for your computer that can handle ddr3. With ddr3 advancing so fast toward the personal computer don't expect ddr2 to ever take off. It is the same reason why video card manufacturers use ddr3 instead of ddr2 - ddr2 is too expensive to make and does not improve enough over ddr in order to be worth the money.
longlivelinky
Yup

theyre also going to be using 512mb G-ddr3 Ram "sticks" in new graphics cards


Maybe now we can all play doom3 on max graphics properly considering that game requires more power than is even available right now dry.gif mad.gif
longlivelinky
Actually while im here...you people should know more than me about this...

whyre samsung trying to release ddr3 modules in 2006 when were only just getting the foundations set up for ddr2 RAM with intels new LGA775 socket?

Just wondering, i know they say technology moves fast but i personally think 18 months later from using ddr 2 going onto ddr3 is a tad too fast...
the1physicist
cause then they make money
palmito
gddr3 and ddr3 are not exactly the same.
voltage are not the same : 1.5v for ddr3 and 1,8v for gddr3
nor the frequency : 1066 Mhz for ddr3 and 800Mhz for gddr3
neither the prefetch : 8n for ddr3 and 4n for gddr3 (like ddr2)
Guest_guest
I like the news already biggrin.gif biggrin.gif biggrin.gif
shinobi
Nooooo, no no no.
DDR3 was still being developed by JEDEC, while GDDR3 (which stands for Graphics Double Data Rate Random Access Memmory) was developed by ATi, designed specially for graphics cards. GDDR3 and DDR3 have nothing to do with each other. Check out wikipedia.org for more info on that. ; )
DJ.Night
Hello people biggrin.gif ;
Well nice to know bit more about DDR3, but with all the comments its kinda confusing.
well i just want to know few things, when will it be out, any idea? i am planning to build my own computer so need all the latest technology products.
it is not far from end of 2006, as you guys mentioned early 2006 so i dont see it any where. i have researched few motherboards and none of them specify DDR3 memory only DD2. but which is best DDR, DDR2, or DDR3, i assume DDR3?
Thanks peeps
o'rly
It's the same reason why Rambus did horrible. Well maybe not the same reasons but ddr2 has really high latency and really doesnt give a really good performance boost over ddr until you hit ddr2-800 and higher which is like 3 times the amount for a regula ddr stick. When they can start matching the speeds of the fsb's of the processors things will look up. Having a 1600-2000 fsb and at least getting ram to get close to match it will boost performance by a lot I think.

But ya the Gddr3 thats on a video card is not the same ram as a ddr2 stick or even in this case ddr3. I have a lot of people tell me that system memory can handle the same information as a gpu...and for that reason I usually tell them than why cant you buy memory and slap it in your gpu??
o'rly
QUOTE (DJ.Night+Sep 15 2006, 07:05 PM)
Hello people biggrin.gif ;
Well nice to know bit more about DDR3, but with all the comments its kinda confusing.
well i just want to know few things, when will it be out, any idea? i am planning to build my own computer so need all the latest technology products.
it is not far from end of 2006, as you guys mentioned early 2006 so i dont see it any where. i have researched few motherboards and none of them specify DDR3 memory only DD2. but which is best DDR, DDR2, or DDR3, i assume DDR3?
Thanks peeps

The only way they could make some of the ram compatible with each other is to make new DDR1 ram with the same pin alignments as DDR2 and DDR3 respectivly. That said there would be mass confusion since those sticks would not be compatible with the huge array of customers sill using ddr1 ( I am for that matter).
Next, DDR2 is really...for lack or better terms crappy. Personally I am going to skip the DDR2 era and wait for DDR3. I know people need to have the lastest and greatest but for the money right now AMD systems running socket 939 are a really good way to go. Even though the prices for there AM2 socket which supports DDR2 is maybe 5% more (and thats at maximum I think) you can opt to go that route as well. Since I read somewere that AMD said you can use DDR2-1066! Which just about matches there fsb of 1600-2000.
Then lastly if DDR3 performs like its suppose to then obviously go with that and I am sure that when that comes put DDR1 prices will drop like a rock. But if your content on using Intel go with Core 2 Duo...the Conroe chips are creaming fast and match it with the highest DDR2 chips you can find (fsb wise). But usually I like to make sure I can upgrade a lot of things on my motherboard. For instance I am running a single core processor but can easily upgrade to a dual core. Also dual channel ram and Sata 2 is nice to have.
Sorry for the rambling but computers change way too often to have to have the lastest and greatest. Stick with what you need for pretty much a 3-5 yr stand.
Geminon
GDDR3 is absolutely NOT the same as DDR3 - no ifs ands or buts. GDDR3 is actually very similar to DDR2, with slightly different architecture due to different requirements. As for what is "better"?

There's a lot of technical terms to wade through, to be sure. Here's some of the vocabulary that you may see floating around:

Synchronous: as in, 'running your RAM synchronous with your FSB'; your data rate frequency * 2 = FSB frequency - some systems perform better running synchronous than having the RAM slightly faster than the FSB
Chip frequency: this is the TRUE speed of the circuitry, and the hardest to improve; this is analgous to the frequency of your CPU without using the multiplier.
I/O frequency: the rate at which the information signal comes in and out of the memory; in the case of DDR-type memory, this is 1x chip frequency for DDR, 2x chip frequency for DDR2 and 4x chip frequency for DDR3.
Data rate frequency: this is how the memory is typically labeled, e.g. the XXX of DDR-XXX; this is double the I/O frequency.
Latency: number of clock cycles read and write information to the memory, essentially.
Bandwidth: this is another way memory is labeled, e.g. the XXXX of PC-XXXX is the peak bandwidth in MB/s; this is the data rate frequency * 8 for all DDR-type memory

Here's the math you actually need to know:

Latency / Data Rate Frequency = Actual time in nanoseconds to read and write

>>> Try to minimize this number

Bandwidth * #of channels (some memory can be run as dual-channel, 2x bandwidth)

>>> Try to maximize this number

Theoretically, if there were no added complications with running your FSB synchronous or asychronous (which there are, and it varies greatly between CPUs, from largely irrelevent to complicated and annoying), DDR2-400 with a latency of 2 would perform the same as DDR2-800 with a latency of 4.

So to recap: be aware of running synch or asynch, calculate real delay in nanoseconds, and take advantage of dual-channel setups to boost bandwidth.

All specs being equal, DDR3 will be better than DDR2 due to lower power, which means less heat and longer battery life, and more theoretical room to OC. HOWEVER, I get the feeling (like what happened with the DDR/DDR2 thing) that the higher-end DDR2 modules will still outperform the new DDR3 modules to start, in terms of cost vs. real life performance.




TArun
QUOTE (ap2+Feb 17 2005, 11:10 AM)
http://www.physorg.com/news3081.html

Am I wrong, or this type of memory is already used in graphics cards??

hi every1,
pretty convinced tht i am posting in the wrong forum ...but boss is on my head ready to wack me real bad .....could somebody here suggest me where do i get info on the electroic working and architecture of a DDR2 SRAM....plz note DDR2 SRAM and not SDRAM....wink.gif....angleheads could mail this trapped soul at tarungupta.19@gmail.com .....cheers!!
PhysOrg scientific forums are totally dedicated to science, physics, and technology. Besides topical forums such as nanotechnology, quantum physics, silicon and III-V technology, applied physics, materials, space and others, you can also join our news and publications discussions. We also provide an off-topic forum category. If you need specific help on a scientific problem or have a question related to physics or technology, visit the PhysOrg Forums. Here you’ll find experts from various fields online every day.
To quit out of "lo-fi" mode and return to the regular forums, please click here.