8Mx32 GDDR GDDR1 GDDR3
Data Rate 800Mb/s≦ 1600Mb/s≦
Core Voltage 1.8V 1.9V
I/O Voltage 1.8V 1.9V
On-Die Termination None Yes
Core Power @ 400MHz 1.2W 1.2W
I/O Power High 30% Lower
Off Chip Driver Calibration None Yes
Output Device Push Pull Open Drain
DQS Scheme Bi-Directional Single-Ended Uni-Directional Single-Ended

Samsung has started mass production on GDDR3 and expected to
ship out in February to customers like NVIDIA and ATi. The 8Mx32 GDDR3 has speed
from 500Mhz to 800Mhz with a max data rate of 1000Mbps/pin to 1600Mbps/pin. The
available part numbers are K4J55323QF-GC12, K4J55323QF-GC14, K4J55323QF-GC16 and
K4J55323QF-GC20.

8Mx32 GDDR GDDR1 GDDR3
Data Rate 800Mb/s≦ 1600Mb/s≦
Core Voltage 1.8V 1.9V
I/O Voltage 1.8V 1.9V
On-Die Termination None Yes
Core Power @ 400MHz 1.2W 1.2W
I/O Power High 30% Lower
Off Chip Driver Calibration None Yes
Output Device Push Pull Open Drain
DQS Scheme Bi-Directional Single-Ended Uni-Directional Single-Ended

Samsung has started mass production on GDDR3 and expected to
ship out in February to customers like NVIDIA and ATi. The 8Mx32 GDDR3 has speed
from 500Mhz to 800Mhz with a max data rate of 1000Mbps/pin to 1600Mbps/pin. The
available part numbers are K4J55323QF-GC12, K4J55323QF-GC14, K4J55323QF-GC16 and
K4J55323QF-GC20.