Latencies issue with a Viper Series [PT000006-PVT36G11600LLK]
I have 2 Kits (3x 2GB) of this old Viper Series [PT000006-PVT36G11600LLK], and recently I changed my mobo from an ASUS P6T to a an ASUS P6X58D-E.
Originally this Kit latency´s is 8-8-8-24 when running in XMP mode. However when I use 12GB, by populating all memories slots, I downgrade the frequency from 1600MHz to 1333MHz, as it was advised me in this Forum.
Then I installed 12GB RAM, in this new mobo [ASUS P6X58D-E], and after having setting the frequency to 1333MHz it set automatically the latencies to 9-9-9-25.
I had a look at this Kit SPD information, through AIDA64 Extreme Edtion, and found out the following latencies settings:
Extreme Memory Profile
Profile Name: Enthusiast (Certified)
Memory Speed DDR3-1600 (800 MHz)
Voltage: 1.65 V
@ 800 MHz 8-8-8-24 (CL-RCD-RP-RAS) / 38-88-2-5-12-6-6 (RC-RFC-CR-RRD-WR-WTR-RTP)
@ 700 MHz 7-7-7-21 (CL-RCD-RP-RAS) / 33-77-2-5-11-6-6 (RC-RFC-CR-RRD-WR-WTR-RTP)
@ 600 MHz 6-6-6-18 (CL-RCD-RP-RAS) / 28-66-2-4-9-5-5 (RC-RFC-CR-RRD-WR-WTR-RTP)
Isn´t correct to say that @ 1333MHz the latencies should run in 7-7-7-21?
Should I set the latencies manually to 7-7-7-21, 8-8-8-24 or leave it to 9-9-9-25, when using 12GB config?
Theoretically yes, but this is only what the modules have been programmed to. The BIOS can take this information and set it to it's own algorithms. When you change the hardware, the best course of action would be to do some trial and error testing to see what the suitable timings would be at 1333.
Originally Posted by madureira
I would test the system at 7-7-7-21, 8-8-8-24, 9-9-9-25 etc with memtest.
Memtest can be found here: http://www.memtest.org/
If you pass 3-4 loops, at the respected timing, it should be fine to proceed to Windows.