Sign in with
Sign up | Sign in
Your question

New memory format XDDR could open up future

Last response: in Graphics & Displays
Share
a b U Graphics card
September 20, 2004 7:49:29 AM

<A HREF="http://www.theinquirer.net/?article=18556" target="_new">http://www.theinquirer.net/?article=18556&lt;/A>

Essentially allowing Quad data rate memory, this ATI devlopment could help fuel future card that ramp up the clock speed, and be a solution to 128 vs 256 vs 512 bit memory issues, 512 being far to expensive to implement right now, and 128bit still being significantly cheaper than 128bit to limit it's use in some cards.
ATI's allways been on the forefront of memory technology (DDRII and GDDR3) so, I don't see why nV wouldn't agopt this as they were the first to bring GDDR3 to market without any qualms.


- You need a licence to buy a gun, but they'll sell anyone a stamp <i>(or internet account)</i> ! - <font color=green>RED </font color=green> <font color=red> GREEN</font color=red> GA to SK :evil: 
September 20, 2004 8:57:26 AM

Can that be similar to XDR DDR RAM ?
<A HREF="http://www.bdgamer.net/?itemid=2677" target="_new">http://www.bdgamer.net/?itemid=2677&lt;/A>

Apparently that page has a few lines abt sony ramping up that for cell tech, and maybe PS3.

Rambus have been doing XDRAM for a while now. Apparently that was their successor to RDRAM.
<A HREF="http://www.rambus.com/products/xdr/" target="_new">http://www.rambus.com/products/xdr/&lt;/A>

<i> :tongue: <font color=blue>I don't suffer from insanity.</font color=blue><font color=red> I enjoy every minute of it.</font color=red> :tongue: </i>
<b>He who laughs last thinks slowest!</b>
September 20, 2004 6:50:09 PM

For a while I've been wondering when will we ever hear again about QBM. Finally it's talked about. I remember reading about it on Anandtech, a technology that supposedly crosses the signal to somehow create two or something, effectively giving twice more bandwidth. Was wondering if VIA would ever do something about it.

Quote:
and 128bit still being significantly cheaper than 128bit to limit it's use in some cards.

I don't quite get your phrase, typo maybe?

--
<A HREF="http://www.lochel.com/THGC/album.php" target="_new"><font color=red><b>The THGC Photo Album revision Eden, faster updated than ever before!</A></b></font color=red>
September 20, 2004 7:16:02 PM

I believe he meant 128 bit still being cheaper than 256 bit.

Me: are you saying I can't provide?
Me: cause I know I can provide.
Me: oh and I can provide money too;)
Rachel:) : why do we need money when we can just stay in our room and have sex all day?
a b U Graphics card
September 20, 2004 8:14:56 PM

Yes, typo, WS got it. Brain no sleep work well not night writeeing.

Mainly that the 128bit memory is very cheap in comparo to the 256bit, let alone 512bit which both nV and ATI looked into as an answer (nope way to much work/costs).


- You need a licence to buy a gun, but they'll sell anyone a stamp <i>(or internet account)</i> ! - <font color=green>RED </font color=green> <font color=red> GREEN</font color=red> GA to SK :evil: 
September 21, 2004 3:44:53 AM

Nice to see. So by the time of my next upgrade 06. That should be on it's way. That will be time for my next vid card upgrade. After the X800Pro this year.
a b U Graphics card
September 21, 2004 4:01:44 AM

R520 comes in early '05, so byt '06 it should be cheap. Also likely something new from nV too.

I can't wait that long, my porn needs more windows open simultaneously. Why kill pop-ups when they're offering more pr0n!?! :wink:


- You need a licence to buy a gun, but they'll sell anyone a stamp <i>(or internet account)</i> ! - <font color=green>RED </font color=green> <font color=red> GREEN</font color=red> GA to SK :evil: 
a b U Graphics card
a b } Memory
September 21, 2004 4:06:25 AM

As far as I know QBM is just a less effective way to do Dual Channel with 1 module.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>
September 22, 2004 3:37:36 AM

Well, it seemed pretty well thought of. Splitting the signal in a perpendicular way getting effectively two at once seems to work for them.

I've always thought Dual Channel wasn't really doubling bandwidth. From what I read on how it works, it's not really having twice the bandwidth per RAM. How could it anyways. :eek: 

--
<A HREF="http://www.lochel.com/THGC/album.php" target="_new"><font color=red><b>The THGC Photo Album revision Eden, faster updated than ever before!</A></b></font color=red><P ID="edit"><FONT SIZE=-1><EM>Edited by Eden on 09/21/04 11:37 PM.</EM></FONT></P>
a b U Graphics card
a b } Memory
September 22, 2004 4:04:30 AM

Dual Channel offers twice the bandwidth because the bus is twice as wide. The chipset usually can't use all the bandwidth so there is some loss. If you take that dual channel settup and connect it to 1 stick of RAM by making the signals from one channel out of phase with the other, you have what VIA was attempting to do.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>
September 22, 2004 4:55:05 AM

I see.

--
<A HREF="http://www.lochel.com/THGC/album.php" target="_new"><font color=red><b>The THGC Photo Album revision Eden, faster updated than ever before!</A></b></font color=red>
!