C2D Notebooks DDR2 speed?

jtir · 16th March 2007, 9:52 AM

I've just checked my memory speed with CPU-Z v1.39 and reports that the frequency of the DDR2 RAM is

Frequency - 266.7 MHz
FSB : DRAM - 5:8
CAS - 4.0 clocks
RAS to CAS - 4 clocks
RAS - 4 clocks
Tras - 12 clocks
Trc - 16 clocks

The actual bus speed is 166.7 MHz (rated fsb is 666.7 MHz)

Why won't the DDR2 frequency run at 333 MHz ? (SPD rating of the ram is 333 MHz capable)

SSJX · 18th March 2007, 12:29 PM

good question

made me check my cpu z stats

What's your ram? and your mobo?
because mine says its Samsung PC2-5300 (333mhz)
and its running at 333mhz (5-5-5-13)

also from the chart, it says if i were to run it at 266mhz
i would get the following latencies: 4-4-4-11

16th March 2007, 9:52 AM	#1
jtir Member Join Date: Oct 2003 Location: Sydney Posts: 443	C2D Notebooks DDR2 speed? I've just checked my memory speed with CPU-Z v1.39 and reports that the frequency of the DDR2 RAM is Frequency - 266.7 MHz FSB : DRAM - 5:8 CAS - 4.0 clocks RAS to CAS - 4 clocks RAS - 4 clocks Tras - 12 clocks Trc - 16 clocks The actual bus speed is 166.7 MHz (rated fsb is 666.7 MHz) Why won't the DDR2 frequency run at 333 MHz ? (SPD rating of the ram is 333 MHz capable) __________________ Q6600 (3.24GHz @ 1.40v)\| 8GB HyperX-8500C5 @ 2.2v \| Gigabyte EP35-DS3P \| Palit 8800GT 512MB \| Strider ST60F \| TR Ultra 120 Ex \| TR Tsunami Dream \| 3 x SFF21F

18th March 2007, 12:29 PM	#2
SSJX Member Join Date: Apr 2006 Location: Sydney Posts: 2,746	good question made me check my cpu z stats What's your ram? and your mobo? because mine says its Samsung PC2-5300 (333mhz) and its running at 333mhz (5-5-5-13) also from the chart, it says if i were to run it at 266mhz i would get the following latencies: 4-4-4-11 __________________ Good Trader list: click here 164 unique users and counting Add your PSN ID to OCAU's Wiki Sony Vaio Club Member #2