Let's clarify, G
DDR and DDR
are not the same things. Without going into specifics, GDDR - designed for video cards, running at higher voltage (usually) and different (impractical) speed/latency that would not be very useful to an actual system. Also, GDDR's # doesn't necessarily mean its the same as DDR featuring the same # like Concorde already mentioned.
Originally Posted by Concorde105
GDDR5 is based off DDR3, I hope you know that.
^Exactly. Another example is the older GDDR3 and GDDR2, which were both based on DDR2's architecture. So, despite being called GDDR3, that memory is much different from actual DDR3 in the way it functions.
Originally Posted by SHNS0
On graphics cards, DDR4 was so late that they skipped it and went directly to DDR5 lol.
GDDR4 was used, but only briefly, the x1950 and a few r600 radeons (3870, 2900, 2600). Nvidia opted to stick w/ GDDR3, so It never was used much and got quickly replaced by GDDR5. Either way, system DDR4 is completely different - and much more advanced.Edited by SamuelL421 - 4/4/11 at 8:31pm