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CMX512-3200C2 only runs @ 333Mhz


Ezechiel

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Hi everyone,

I've got two cmx512-3200c2 modules. One is v5.1 the other one is an old 1.1

The v1.1 module only runs @ 333Mhz :confused:

I tested the module alone in all banks. :mad:

 

System:

P4 3,2Ghz Northwood Fsb: 800mhz

MSI 865PE Neo2 Platinum Edition

 

Please help me

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Hi everyone,

I've got two cmx512-3200c2 modules. One is v5.1 the other one is an old 1.1

The v1.1 module only runs @ 333Mhz :confused:

I tested the module alone in all banks. :mad:

 

System:

P4 3,2Ghz Northwood Fsb: 800mhz

MSI 865PE Neo2 Platinum Edition

 

Please help me

 

First off, on a dual-channel motherboard like yours you should not mix different memory modules - not even different revisions of the same model memory modules.

 

Second, your old v1.1 was manufactured before JEDEC officially ratified PC3200/DDR400 as a standard speed. As such, its SPD was programmed for only DDR333 and DDR266 operation.

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Okay thx for the technical background, but what can I do? I bought the memory because i wanted a fastDDR 400 module and not a 333!

The data sheet from corsair says: "100% tested at 200 MHz (DDR400) in high

performance motherboards" Obviously not true :(

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Okay thx for the technical background, but what can I do? I bought the memory because i wanted a fastDDR 400 module and not a 333!

The data sheet from corsair says: "100% tested at 200 MHz (DDR400) in high

performance motherboards" Obviously not true :(

 

You are simply relying on the SPD programmings, in this case. The only way to fix that is to go into the BIOS and manually set your values as follows:

 

Configure SDRAM Timing by SPD: Disabled

CAS# Latency: 2 Clocks

RAS# Precharge: 3 Clocks

RAS# to CAS# Delay: 3 Clocks

Precharge Delay: 6 Clocks

DRAM Frequency (MHz): 400

DDR Power Voltage: 2.70V to 2.80V

All other settings at defaults.

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