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Dual Channel with Asus A7n8x deluxe


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I have 3 dimm slots on my Asus A7n8x deluxe 2.0. I bought the dual channel kit PC-3200 Corsair (TWINX1024-3200C2) from monarch computer. In dimm slots 2 and 3 is where each 512 stick is installed, for a total of a 1gig of memory running in dual channel. I want to add more memory to my first and final open slot maybe a 512 or 1gig stick, but I do not want to lose dual channel. Can I add memory to dimm 1 without losing dual channel? If so, what size ram and type should I install? Thanks!

 

Gabe

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The CMX512-3200C2 module should work with your A7N8X Deluxe MB along with

the current memory module that you have which is TwinX1024-3200C2; just make sure that you get the same version as the one that you currently have i.e.

V1.1, V2.1, etc., otherwise the module timing settings will be set at

2.5/3/3/7 instead of 2.5/3/3/6. Anyways, this should be fully compatible

and will work without any problem on your current setup and you will not

loose any performance and will also run in a dual channel mode setup.

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Thanks for the reply Ram Guy. Good to know the CMX512 will work with my setup. Is this true also for the CMX1024-3200C2 also? I'm looking to buy this one instead of the 512. if not then I'll order the 512. Thanks!

 

 

The CMX512-3200C2 module should work with your A7N8X Deluxe MB along with

the current memory module that you have which is TwinX1024-3200C2; just make sure that you get the same version as the one that you currently have i.e.

V1.1, V2.1, etc., otherwise the module timing settings will be set at

2.5/3/3/7 instead of 2.5/3/3/6. Anyways, this should be fully compatible

and will work without any problem on your current setup and you will not

loose any performance and will also run in a dual channel mode setup.

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Please make sure that you have the jumpers set at 2-3 and not the default 1-2 for the CPU FSB and the modules installed on DIMM slots 2&3 (if one module then DIMM 1); make sure that you have the latest BIOS for your MB, load Setup/Optimized default settings and try the following BIOS settings;

TwinX512 or TwinX1024-3200C2

CPU Freq: 200 MHz (400 FSB)

System Performance: User Define

Memory Frequency: 100%

Resulting Frequency: 200 MHz (400 FSB)

Memory Timing: Optimal if Manual

SDRAM CAS Latency: 2.5T

SDRAM RAS to CAS Delay (tRCD): 3T

SDRAM Row Precharge (tRP): 3T

SDRAM Active to Precharge Delay (tRAS): 7T

DDR Reference Voltage: 2.7 Volts

AGP Voltage: Default *unless you have ATI (9200/9600/9800) or NVIDIA (5200/5700/6600/6800) then 1.6 Volts suggested!*

All other settings are motherboards defaults

Then please test them one at a time with http://www.memtest.org and let’s make sure it's not some other issue! I would run the test for at least 2-3 passes to be sure!

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Thanks Ram Guy. I will run the test when I have the new ram.

 

 

Please make sure that you have the jumpers set at 2-3 and not the default 1-2 for the CPU FSB and the modules installed on DIMM slots 2&3 (if one module then DIMM 1); make sure that you have the latest BIOS for your MB, load Setup/Optimized default settings and try the following BIOS settings;

TwinX512 or TwinX1024-3200C2

CPU Freq: 200 MHz (400 FSB)

System Performance: User Define

Memory Frequency: 100%

Resulting Frequency: 200 MHz (400 FSB)

Memory Timing: Optimal if Manual

SDRAM CAS Latency: 2.5T

SDRAM RAS to CAS Delay (tRCD): 3T

SDRAM Row Precharge (tRP): 3T

SDRAM Active to Precharge Delay (tRAS): 7T

DDR Reference Voltage: 2.7 Volts

AGP Voltage: Default *unless you have ATI (9200/9600/9800) or NVIDIA (5200/5700/6600/6800) then 1.6 Volts suggested!*

All other settings are motherboards defaults

Then please test them one at a time with http://www.memtest.org and let’s make sure it's not some other issue! I would run the test for at least 2-3 passes to be sure!

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