tRFC Memory Question

[Scorpion44]

Can the tRFC refresh cycle time be to high? Mine is set at 72 on auto.

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Gigabye EP45-UD3P rev. 1.6
Intel C2D E8600
Cooler Master 3HP 92mm cooler
OCZ Reaper HPC DDR2 1066 2x2Gb
XFX Radeon HD 4850 1Gb PCI-E
Dual Samsung 32" HDTV Displays (HDMI)
2x Seagate Baracuda 1.5 Tb SATA 3/Gb's Raid0
LG WH10LS30K 10X Blu-ray Burner
Logitech Z5500 5.1 Surround System
OCZ ModXtream Pro 700w PSU
Cooler Master Cosmos Pure Black SGCC Full Tower Case
Windows 7 Ultimate 32bit

[Chike]

Re: tRFC Memory Question

If it is set by auto it is set according to manufacturer spec that are programed to SPD.
However, usually much lower is possible (close to tRFC for DDR-800) with the higher voltage that is required for higher DDR rates.

Of course there is no point changing it if there is no gain in bandwitdh or lower latencies.

[profJim]

Re: tRFC Memory Question

If you post the information from steps 2, 3 and 4 from this post, we can help you optimize your bios settings for maximum memory performance.

Have you run any stability/stress tests with your current setup? If yes, which tests and how long did each test run?

[jelbo]

Re: tRFC Memory Question

A tRC (Row Cycle Time) of 72 seems high to me though. I can run my DDR3 on 1333Mhz with a tRC of 27 (24h Prime95 'Blend' stable). Default is 33 for me (OCZ3G1600LV4GK).

/edit: oops, you were talking about tRFC..

[warren300]

Re: tRFC Memory Question

seems fine to me at 72,mine run at 100 on auto but ive manually set it to 88