What on earth is tRFC?! - Techist - Tech Forum

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Old 09-03-2009, 07:03 PM   #1 (permalink)
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Question What on earth is tRFC?!

Hey guys

I just got a Foxconn Blackops to replace my ailing P5N-D board (and will buy a DX11 ATI card for it in march-ish....)

While i was overclocking my cpu, i managed to get to 3.2GHz, but my RAM timings are confusing me a little....

my RAM is a patriot viper DDR3 1600 MHz kit, a 6GB i7 kit, but in my infinite wisdom, i figured a) it was cheap, b) it was 6GB and c) it ran on lower volts than lga775 DDR3 so less stress on my power systems....

All is well and good now, but I did notice that my ram timings are as follows:
CL:7
tRCD: 7
tRP: 7
tRAS: 20

but this shook me: tRFC: 74!!!!!

Could someone tell me if tRFC is supposed to be that high?? I know tRC in DDR2 is about 25-30-ish, but I dont know if that really high timing is slowing things down or not.....

the command rate is 1T atm, so no issues with that

Ive currently got it perfectly happy at 3.2Ghz with no problems whatsoever (Q9450, 400FSB)

Also, does anyone have any experience with this board they'd like to share?
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CPU: Intel Core 2 Quad Q9450 @ 3.4GHz
Motherboard: Foxconn Blackops X48
Memory: 8GB DDR3 (1361MHz)
Graphics: ATI 5850 1GB GDDR5
Hard Drives: 1 x 500GB, 1 x 1TB
Case: Antec 900
OS: Server 2008 R2 64bit
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Old 09-03-2009, 07:47 PM   #2 (permalink)
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Default Re: What on earth is tRFC?!

I ran my old DDR3 1600 memory at 8-8-8-28-74. My new memory runs at 7-7-7-20-54. Try 54, if it doesn't work just change it back to 74
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Old 09-04-2009, 10:32 AM   #3 (permalink)
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Default Re: What on earth is tRFC?!

this is a X48 board right? just leave it at 74, that's what my 1333MHz ram runs at.
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Old 09-06-2009, 01:41 PM   #4 (permalink)
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Default Re: What on earth is tRFC?!

Righteyho, cheers
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CPU: Intel Core 2 Quad Q9450 @ 3.4GHz
Motherboard: Foxconn Blackops X48
Memory: 8GB DDR3 (1361MHz)
Graphics: ATI 5850 1GB GDDR5
Hard Drives: 1 x 500GB, 1 x 1TB
Case: Antec 900
OS: Server 2008 R2 64bit
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