DDR vs GDDR3

[fbrdphreak]

Hey guys,
Are there any architectural differences in DDR vs GDDR3 memory that make it higher performing? I know the big thing is heat dissipation, allowing it to clock higher. But if the two memories are clocked the same, is the performance the same? Any links to said info? TIA!!

 

[GalvanizedYankee]

I don't know but you might consider reading Anand's Weblog for 9/01/05.

He comments on DDR,DDR2 and mentions DDR3. YWIA 🙂 j/k I read it today.



jj

 

[Fenuxx]

I believe that performance would be the same between DDR and DDR3 if they were clocked the same, but DDR3 uses less voltage, and runs cooler, therefore allowing it to clock to insane speeds. It also has internal resistors, eliminating the need for bulky external ones, allowing more memory to be packed on the top of the board.

 

[tuteja1986]

we 1st need a cpu that really takes advantage of the high DDR3 speed

 

[otispunkmeyer]

Originally posted by: geforcetony
I believe that performance would be the same between DDR and DDR3 if they were clocked the same, but DDR3 uses less voltage, and runs cooler, therefore allowing it to clock to insane speeds. It also has internal resistors, eliminating the need for bulky external ones, allowing more memory to be packed on the top of the board.

i cant remember what the name for it is, but cant DDR3 terminate things internally whereas DDR couldnt? or am i making stuff up?

any way i think Google will serve you well OP

heres a brief article here
and another

second link is actually very good

 

[Acanthus]

DDR2 and DDR3 also have significantly increased latency to acheive their clockspeed.

The clockspeed however benefits much more than than the latency hurts.

Just pointing out that PC4200 DDR and PC4200 DDRII will not perform identically.

 

[fbrdphreak]

I know all about the diff btwn DDR1 & DDR2 system RAM. However GDDR3 is a little different than just regular DDR3 from what I'm reading. I'll check out those links, thanks

 

[jiffylube1024]

Originally posted by: Acanthus
DDR2 and DDR3 also have significantly increased latency to acheive their clockspeed.

The clockspeed however benefits much more than than the latency hurts.

Just pointing out that PC4200 DDR and PC4200 DDRII will not perform identically.

Plus, the price of GDDR3 is tremendously higher than DDR and DDR II right now, which makes it suitable in video cards (where the bandwidth is absolutely necessary), but a total waste of money should it be adapted to desktop systems at this point in time.