PC4200 = Sweet!

[OC-Master]

oh yea,

Micron let me know that they are preping PC4200 (QDR533) dimms and are getting them ready for the market. They told me that these ram dimms can do 4.2GBytes a second. They will have flavours of 128MB/256MB/512MB/1GB and later a 2GByte module, (wow!). They would not comment on the release dates of the ram thou so that kinda sucked.

I can tell you that Micron has been working with alot of companies to get QDR out the door. He said that DDR was just an experiment to see how well double pumped SD would do. hmm, I wonder if nVidia will make duel dimm version of the nForce to support QDR, that would be 8.4GBytes a second! Holy cow man!

:rolleyes:

[OC-Master]

With this email, I think I'm gonna skip DDR and move right into QDR! solution. My system rocks and I see no need to replace the current board and ram thou.

THOU I'd love a new graphics card, anyone care to donate a TNT1 or 2?

[TranceBear]

Originally posted by AXIA
With this email, I think I'm gonna skip DDR and move right into QDR! solution. My system rocks and I see no need to replace the current board and ram thou.

THOU I'd love a new graphics card, anyone care to donate a TNT1 or 2?


You pay shipping+$10 and a 16mb TNT-2 is yours or trade for ?

[OC-Master]

is it AGP?

[oc jason]

I also got a TNT2 Ultra 8meg, and a TNT Riva 16meg, 10 and shipping or trade both for a 52x CDROM

[Tebore]

What does "QDR" stand for again?

[UnseenMenace]

Originally posted by Tebore
What does "QDR" stand for again?

I would asume Quadruple Data Rate

[Luie]

Quadruple Data Rate!!!
omg!!!!!
that's twice fast as ddr!!!
omg!!!!!
does this qdr needs a special mobo to support it?

[Phil]

qdr will need qdr boards to support it. But don't write off ddr just yet, motherboard and memory manufacturers have invested a lot in ddr and won't want to replace it until they've made that money back. Also don't expect the data rates to be quite so high. ddr ram has an efficiency of around 60%, qdr will likely be lower so expect around 2gb/s bandwidth.

[proze]

how are they going to get qdr right? i mean, sdr samples on the rising edge of the clock, ddr samples on both rising and falling... so is qdr going to be on both the edges and in the middle of the peak and trough? the clock is for timing, and you're going to need a second clock at twice the speed to get that right!! lol ???

also, i assume going from ddr to qdr will see that same latency increases that going from sdr to ddr saw. something to think about...

[dozier768]

they burst 4 DWORDS per cycle i imagine trough a double pummped dual 128bit "instead of a 64bit" bus ?? im guessing

[proze]

well, your guess is as good as mine. lol :)

anyone else?

[Phil]

As far as I know qdr will just be a step up from ddr, it will still be a 64bit bus (a dual channel system would be the equivalent to 128bit).
Just like ddr squeezes 2 signals into every clock, qdr will fit 4.

[OC-Master]

phill, I totally agree wit u. I too think its a 4 way rise fall thing.

[proze]

i know it's gotta fit 4 memory cycles into one clock cycle, i was just wondering how?

i mean, ddr samples on the rising and falling edges.. so where are the other two samples gonna fit in?

[OC-Master]

http://www.qdrsram.com/presentation/qdroverview.pdf

I think this is what everyone wants to see...

[-=HN=- Wild9]

wow
thas gonna be kewl

[proze]

Originally posted by AXIA
http://www.qdrsram.com/presentation/qdroverview.pdf

I think this is what everyone wants to see...

thanks for the link, axia. checking it out now...

[rUfUnKy]

Man ya turn your head for one second and BAMM!! another upgrade HA!

[Phil]

Originally posted by rUfUnKy
Man ya turn your head for one second and BAMM!! another upgrade HA!

Like I said earlier don't expect it soon. DDR has taken so long to be ready and so much has been onvested into it, and consider that memory and boards are almost the same price as sdr ones so they have been hoping for long term profits which suggests to me that they won't be replacing them any time soon.

[rUfUnKy]

Originally posted by Phil


Like I said earlier don't expect it soon. DDR has taken so long to be ready and so much has been onvested into it, and consider that memory and boards are almost the same price as sdr ones so they have been hoping for long term profits which suggests to me that they won't be replacing them any time soon.

agreed,but if its not that then it's something else ..just want to keep my system on the top of the line side long enough to be able to show it off a little ..:D

[SickBoy]

I think we'll most likely see QDR memory on some video cards before we see QDR mobos.... kinda like how DDR evolved.

SickBoy

[phungilax]

until i great substantial reviews on mobos that support qdr i don't think i'll be upgrading. it does sound awesome though. maybe after it has gain some popular will i get it :)

[OC-Master]

QDR will hit the market when Clawhammer and Itanic processors hit.

QDR SD-Ram will put RD-Ram where it belongs! in price and performance.

[Ronin]

From that pdf file I cant really tell how much better QDR-RAM is...

[Krusty]

I hate to be the one to point this out, but it looks to me from that pdf file that qdr is absolutely not the type of memory you want on a video card or for a gaming system. Once you reach points where there are continuous streams of data being moved (such as in video games), the qdr becomes far slower than DDR. The qdr would, however, work well on servers.

Somehow, I doubt that people here will be running servers more often than games.

[tbirdkiri]

ok theclawhammer will rock and will have high clock speeds but ive used a itanic and it blows,
its a shame that the itanic is so specialized while the amd x86-64 is universal.