QUOTE(SSJBen @ Apr 9 2013, 07:46 PM)
GDDR5 is indeed based on DDR3, but they are not manufactured or processed at the same time.
Which means, OEMs do not process a huge batch of DDR3 then seperate 30% of it from the entire pool and make them into GDDR5. Doesn't work like that.
GDDR5 is processed differently altogether and they have a stricter binning process as well.
With that said, do expect prices for graphics card are going to stay stale over the next 4-6 months. GDDR5 isn't entirely in short supply, but not entirely booming off the factory either.
If you want to get a GTX670 now, go get it. No point waiting for a month or 2 because nothing will change.
Not that simple.
Ram modules as per GDDR5 is openly traded in taiwan to a point of speculative pricing etc to in almost the same fashion as debt instruments.
GDDR5 at moment which lower nm rating has already hit 7ghz at 1.5v with Hynix and Samsung which is y u see a lot of the 79xx revision this year .. the mems are clocking high. Most probably on their bulk forward pricing buys ...that all the card manufactorers do.
thats on pricing
on tech GDDR5 is based of DDR3 but the memory controllers are different
DDR3 is based of current cpus 64bit per channel
with GDDR5 based of controllers with 32bit. (16bit input and output)
The main difference after this comes with the number of 32bit I/Os it uses.. like 384bit on the 7970 has 12x32bit I/O's.
So its mainly a bit thingy, I/O's and also cycle. Afaik DDR3 modules handle read n write per cycle while GDDR's can do both at the same cycle.
The supply is a lot infact. Pricing always comes up when new tech comes in. With Intel still favouring DDR3 in haswell so just like SSJBEn said dont think anything will change. These modules takes up hardly a fraction of the cost of a GPU. So doesnt make sense on big increases. I am looking at a single digit increment if there was any at all.
This post has been edited by cstkl1: Apr 10 2013, 07:06 PM