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setting memory timings on a ECS nForce3-A


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Hi there.I was hoping I could pick your collective brain. My motherboard bios has got memory related settings that ive never really understood, and so far the internet hasn't helped me relate them to what ive come across before.


Im trying to change my memory timings to 2-3-3-6, which i understand to be CAS/:tRCD/:tRPD/:tRAS.


Problem is that this is what im looking at in my bios: CAS (Tcl) /: 1T/2T /:Read Preamble value /: Async Latency Value.


Theres's also 'memclock index value (Mhz)'. not sure what that does, is it part of the 2-3-3-6?


So given this, how would you go about setting up my memory?


Many thanks -Michael


edit: thought id enter more info.


'By Spd' settings are

Cas 2.5

1t/2t 2t

read preamble 6

async latancy 6


This is all my bios will let me change, and everest tells me this is my memory timing: 3.0-3-3-8. Changing the last to values above to 5.5 and 7 respectively result in a CMOS clearing....



CPU Type AMD Athlon 64, 2200 MHz (11 x 200) 3700+

Motherboard Name ECS nForce3-A (5 PCI, 1 AGP, 2 DDR DIMM, Audio, LAN)

Motherboard Chipset nVIDIA nForce3 250, AMD Hammer

System Memory 2048 MB (PC3200 DDR SDRAM)

BIOS Type Award (08/01/05)


Memory Module Properties:

Module Name Corsair CMX1024-3200C2

Serial Number None

Module Size 1024 MB (2 ranks, 4 banks)

Module Type Unbuffered

Memory Type DDR SDRAM

Memory Speed PC3200 (200 MHz)

Module Width 64 bit

Module Voltage SSTL 2.5

Error Detection Method None

Refresh Rate Reduced (7.8 us), Self-Refresh


Memory Timings:

@ 200 MHz 3.0-3-3-8 (CL-RCD-RP-RAS)

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