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4GB of TWIN2X2048-6400C4


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I know Ram Guy recommends to run 4GB's of TWIN2X2048-6400C4 at 667 speeds because of load on the memory controller. Has anyone experienced stability with this amount of ram running at DDR 800?


Is this recommended because of the limitation of the P965 chipset (I have a Asus P5B Prenium) or because a limitation of the ram?

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I am using this 4 gb memory 800 mhz



My settings for that memory: Voltage and timings


Propiedades del módulo de memoria:

Nombre del módulo Corsair Dominator CM2X1024-6400C4D

Número de serie Ninguno

Fecha de fabricación Semana 23 / 2006

Tamaño del módulo 1024 MB (2 ranks, 4 banks)

Tipo de módulo Unbuffered DIMM

Tipo de memoria DDR2 SDRAM

Velocidad de memoria DDR2-800 (400 MHz)

Ancho del módulo 64 bit

Voltage del módulo SSTL 1.8

Método de detección de errores Ninguno

Tasa de actualización/refresco Reducido (7.8 us), Self-Refresh


Tiempos de Memoria:

@ 400 MHz 5-5-5-18 (CL-RCD-RP-RAS) / 22-42-3-6-3 (RC-RFC-RRD-WR-WTR)

@ 270 MHz 4-4-4-13 (CL-RCD-RP-RAS) / 15-29-3-5-3 (RC-RFC-RRD-WR-WTR)


Enhanced Performance Profile:

Profile Name High Performance

Optimal Performance Profile Sí

Velocidad de memoria DDR2-800 (400 MHz)

Voltaje 2.1 V

Tiempos de Memoria 4-4-4-12 (CL-RCD-RP-RAS)

Row Cycle Time (tRC) 22T

Command Rate (CR) 2T

Write Recovery Time (tWR) 6T

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