thatKingKong
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For those of you who have DDR3 2000Mhz on this board, what is your tRFC timing?
My RAM timings are:
9-10-9-27 100tRFC 1T.
I had to set the tRFC manually to 100. If I had it AUTO, it would be 200 for tRFC. My old DDR3 1600 tRFC was 88 with AUTO settings.
Thx.
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KMoore4318
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/24 15:45:17
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for 12G at 2000 It's setting ( See below ) 
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Crusheddream
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/24 15:50:10
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Becareful my Dominators 2k profile is 8-9-8-24-88-2T. I would use CPU-Z to check your XMP profile. usually if you're running 6gbs you can get away with 88 and 2T @ 2000mhz. But i know for a fact the dominators have to be run at 2T. it mostly depends on the IMC too. So check CPU-Z. Use the factory timings.
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thatKingKong
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/24 17:15:39
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My CPUZ XMP-2000 profile:
rRC = 50
Command Rate = 2T.
Is the rRC same as tRFC?
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KMoore4318
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/24 19:20:29
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Not the same, as shown by below : a search for rCR didn't help sorry 
post edited by KMoore4318 - 2011/07/24 19:26:08
Just clink Link to Register > My Affiliate Code:VTJPDC4OMB 1)965 V-8 E761(77) 2)980X AX1200 E760(77) 980 ti 3) E770 (77)2(590) SLI AX1200 4) X299 FTW K, 9980XE 2 2080 supers on AX1200
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HalloweenWeed
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/24 20:01:15
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tRFC (and tRC) is also given in AIDA64. No, they are not the same. My corsair XMS3 1600s, 9-9-9-24-2t, say 88 for tRFC, 41 for tRC. My new Mushkin 1600s, 7-8-7-24-1t, say 128 for tRFC, 31 for tRC. If there is a place to enter tRC in EVGA BIOSes, I haven't identified it. I think Crusheddream is right about 2t, in your case thatKingKong, set 2t. I have never seen any CL9 mem that was 1t.
post edited by HalloweenWeed - 2011/07/24 20:04:42
Main (gaming) rig: i7-3930K; Asus Rampage IV Extreme; H100 W/p-p Excaliburs, AS5; MSI 7870 2GD5/OC; Crucial M4 SSD 256GB. See my primary ModsRigs: Adam for the rest, and I have a second (wife's) rig Asus Rampage III Extreme & 960: Eve.   Overclocking is useless to me if it is not rock stable.
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Crusheddream
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/24 20:48:57
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its actually a speed thing mine up to 1600 can run 1T anything over that is recommended 2T no idea why my guess would be the IMCs on the i7s not all being equal. The way it was explained to me by Kmoore is 2T gives the IMC a little longer to lock onto the specific memory bank. 1T is faster but will you ever notice it probably not. Just follow the XMP profile for your RAM. What RAM is it exactly you are trying to setup? That would help a lot. for 2k mhz use 88 for 1800mhz range use 88 1600 use 74. Those are the generally excepted values.
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thatKingKong
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/24 21:47:38
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It looks like tRFC is four times tRC, mine 50x4 = 200. KMore 36x4 = ~143 I have these sticks: http://www.newegg.com/Pro...x?Item=N82E16820220543 As for the Command rate, I have it AUTO and it sets as 1T. No issues with 1T though. I ran memtest86 5+ hrs at 9-10-9-27 100, 1T with no errors.
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wdflyer
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/24 23:44:55
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My tRFC is 88, tRC is 40 and my timings are 6-10-6-25 with a cr of 1. But that is only at 1996Mhz though, never was good at math, stupid unlocked multiplier  EDIT: that is on a classified3, if it matters to ya OP.
post edited by wdflyer - 2011/07/25 00:08:20
Gizmo: Asus MVF - i7-3770k - Corsair H100 - 32GB G.Skill 2133MHz - Radeon 7970
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HalloweenWeed
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/25 10:31:27
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thatKingKong
It looks like tRFC is four times tRC, mine 50x4 = 200.
KMore 36x4 = ~143
Not true. As you can see from my post above (RE: Corsair XMS3), and wdflyer's post, tRFC is not four times tRC. I am only reporting what AIDA64 reports as the programmed spd XMS profile is. What's more: Wikipedia: Memory timings That page says "T RC = T RAS + T RP" And that's apparently wrong too! thatKingKong
As for the Command rate, I have it AUTO and it sets as 1T. No issues with 1T though.
I ran memtest86 5+ hrs at 9-10-9-27 100, 1T with no errors.
Yeah, the first time you fold you will BSOD. Memtest is only a preliminary test, it is not a last-word test, LinX or Prime95 blend does a MUCH better job of testing memory for that sort of thing. Remember this when you get your unexpected BSOD someday. Everybody: If you want to really learn about memory timings: Anandtech: Everything You Always Wanted to Know About SDRAM (Memory): But Were Afraid to Ask
post edited by HalloweenWeed - 2011/07/25 10:36:32
Main (gaming) rig: i7-3930K; Asus Rampage IV Extreme; H100 W/p-p Excaliburs, AS5; MSI 7870 2GD5/OC; Crucial M4 SSD 256GB. See my primary ModsRigs: Adam for the rest, and I have a second (wife's) rig Asus Rampage III Extreme & 960: Eve. Overclocking is useless to me if it is not rock stable.
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wdflyer
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Re:DDR3 2000Mhz tRFC on X58SLI ?
2011/07/25 13:48:17
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post edited by wdflyer - 2011/10/05 21:24:48
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Gizmo: Asus MVF - i7-3770k - Corsair H100 - 32GB G.Skill 2133MHz - Radeon 7970
Two Kingston HyperX 120GB SSDs in R0 - Two 1TB WD Black in R0 - AX1200 - Thermaltake A71
Kids Rig: EVGA X58 Classified3 - i7 950 - Corsair H100 - 12GB G.Skill 1866MHz - Radeon 7970 - 240GB RevoDrivex2
1TB WD Black - Seasonic 1000w Platinum - CM HAF 912
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