- Joined
- Jul 14, 2001
- Location
- Edmonton, Alberta
This is a very quick and simple thread that will educate you about DDRII.
First;
DDRII is 100% backwards compatible with DDR1. DDRII simply uses 0.09 Micron technology along with large taller dimm specs.
DDRI technology was limited to a maximum memory size of 2GB Dimms (1GB on each side). DDRII on the other hand can handle four times the amount of memory, up to 4GB of each side meaning you could potentially have a total of 8GB of one stick of memory!).
DDRII can operate at 2.5V or 1.8V on the fly. The way DDRII works is, you must lower the voltage to use frequencies behond 333MHz according to Jedec. The reason for this is simple, DDRII 533 is rated to run 533MHz at 1.8V, not 2Volts or 2.5Volts. If you were to run that memory at 2.5V, chances are youd roast your new memory.
Currently, the only way to run high speeds on DDRII with old ddr1 boards is to volt mod your memory control so that it brings down the voltage to 1.8-1.9volts.
Here is the good news, DDRII is HERE. By this time next year, all PCs will have DDRII 533 in them. DDRII 533 is an official spec by Jedec which will launch Q1 2003. This memory will cost simular to DDR1 but with a 200MHz boost from the 333MHz (PC2700 spec from Jedec).
As of January this year, Micron will have started to ship DDRII533 to consumers.
DDRII533 Spec states two voltage settings;
2.5V at 333MHz
1.8V at 400MHz
1.8V at 533MHz
At 533MHz, DDRII memory runs so cool that you wont even notice any temperture changes even by touch.
There you have it, simple and easy to understand. Now, we gotta wait untill like February!
OC-Master
First;
DDRII is 100% backwards compatible with DDR1. DDRII simply uses 0.09 Micron technology along with large taller dimm specs.
DDRI technology was limited to a maximum memory size of 2GB Dimms (1GB on each side). DDRII on the other hand can handle four times the amount of memory, up to 4GB of each side meaning you could potentially have a total of 8GB of one stick of memory!).
DDRII can operate at 2.5V or 1.8V on the fly. The way DDRII works is, you must lower the voltage to use frequencies behond 333MHz according to Jedec. The reason for this is simple, DDRII 533 is rated to run 533MHz at 1.8V, not 2Volts or 2.5Volts. If you were to run that memory at 2.5V, chances are youd roast your new memory.
Currently, the only way to run high speeds on DDRII with old ddr1 boards is to volt mod your memory control so that it brings down the voltage to 1.8-1.9volts.
Here is the good news, DDRII is HERE. By this time next year, all PCs will have DDRII 533 in them. DDRII 533 is an official spec by Jedec which will launch Q1 2003. This memory will cost simular to DDR1 but with a 200MHz boost from the 333MHz (PC2700 spec from Jedec).
As of January this year, Micron will have started to ship DDRII533 to consumers.
DDRII533 Spec states two voltage settings;
2.5V at 333MHz
1.8V at 400MHz
1.8V at 533MHz
At 533MHz, DDRII memory runs so cool that you wont even notice any temperture changes even by touch.
There you have it, simple and easy to understand. Now, we gotta wait untill like February!
OC-Master