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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 64

post #631 of 4610
nyd117--i7-5930K @4.2/4.2---3200Mhz-16GB-C16-17-17-35-1T----1.4v---SA 0.984v---Stressapptest----2 Hours




TurboV shows 1.39v. It's set 1.4v in BIOS.
Still have to make some adjustments and check the tertiaries too.
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post #632 of 4610


It was stable at the setting!!

So do you think I should no lower tFAW to 20 so that it is 4x tRRD_s which is at 5. Or is it as JPM said of no less than 4x meaning more is fine?
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post #633 of 4610
Thread Starter 
Quote:
Originally Posted by llantant View Post



It was stable at the setting!!

So do you think I should no lower tFAW to 20 so that it is 4x tRRD_s which is at 5. Or is it as JPM said of no less than 4x meaning more is fine?

This post is contradictory, you're asking if more is fine but wanting to reduce tFAW lol. Running at the sum of tRRD x4 with the configuration used is fine as long as the sticks are capable. Just remember for the gains we are talking about here, or lack of, doesn't pay to push too far. We aren't looking to break records wink.gif
post #634 of 4610
Quote:
Originally Posted by Silent Scone View Post

This post is contradictory, you're asking if more is fine but wanting to reduce tFAW lol. Running at the sum of tRRD x4 with the configuration used is fine as long as the sticks are capable. Just remember for the gains we are talking about here, or lack of, doesn't pay to push too far. We aren't looking to break records wink.gif

Hehe no i didnt mean that.

Raja corrected JPM with the whole tRRD_s being 4x tFAW instead of tRTP that I had orginally based it on. I got a nice boost from jpm's suggestion so left it at that anyway, I just had to change TWR to 12 instead of auto (says 13 in the mem timing software tho but its 12) in order to stabalise.

Anyway, I was already well into my stability testing when Raja mentioned that it was tRRD_s, I have that set to 5 but tFAW is still at 24. I left it carry on stabiltiy testing because i was like 700% into it when I noticed the post.

So what I mean is do I have to follow the x4 suggestion or is slightly over x4 fine? i.e 5 and 24 instead of 6/24 5/20 ?

Apologies if I am mis understanding something.

Im going to have a few days off and then start tweaking some more ! biggrin.gif
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post #635 of 4610
Thread Starter 
Quote:
Originally Posted by llantant View Post

Hehe no i didnt mean that.

Raja corrected JPM with the whole tRRD_s being 4x tFAW instead of tRTP that I had orginally based it on. I got a nice boost from jpm's suggestion so left it at that anyway, I just had to change TWR to 12 instead of auto (says 13 in the mem timing software tho but its 12) in order to stabalise.

Anyway, I was already well into my stability testing when Raja mentioned that it was tRRD_s, I have that set to 5 but tFAW is still at 24. I left it carry on stabiltiy testing because i was like 700% into it when I noticed the post.

So what I mean is do I have to follow the x4 suggestion or is slightly over x4 fine? i.e 5 and 24 instead of 6/24 5/20 ?

Apologies if I am mis understanding something.

Im going to have a few days off and then start tweaking some more ! biggrin.gif

Right, yes more is fine - because you are raising the time it takes to make at least 4 act commands. The tFAW value is the minimum time (tRRD x4). Setting this lower has no perceivable gain as tFAW is only applicable to acts on the same rank and for tRRD_S (at least i'm fairly sure this is correct)

Being slap bang on the rule may be beyond your memory's capability without more voltage, or it it may be fine - only you can tell us this biggrin.gif. This is precisely why I tried to keep a lot of this stuff out of the OP and the table as it becomes hazy for all involved, and that is by no stretch not including myself. Be sure to make notes to drop back some of these, or make good use of the OC Profile slots in the UEFI in case you find yourself coming unstuck late as stability may drift depending on the margins
Edited by Silent Scone - 2/2/16 at 1:11am
post #636 of 4610
Each Activate is spaced by tRRD. tFAW spaces the fifth Activate by the number of clocks past tRRD X4. In more simplistic terms, if one sets tRRD to 5, it will take 20 clocks to send 4 Activates. If tFAW is set to 24, 4 additional clocks will elapse before the fifth Activate can be sent. So the fifth Activate command will be delayed by a total of 8 clocks; tRRD + (tFAW - (tRRD X 4)).
Edited by Raja@ASUS - 2/2/16 at 5:18am
post #637 of 4610
Thread Starter 
Yeah what he said. teaching.gif
post #638 of 4610
I know - it's my fault. redface.gif
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x99
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post #639 of 4610
Thread Starter 
lol it's not biggrin.gif
post #640 of 4610
Quote:
Originally Posted by Silent Scone View Post

lol it's not biggrin.gif

eh, what ever settings I'm running ATM on z170, x79 and x99 are it until Sunday... Added cpu folding to each client. OPened the windows and let 'em fold (36h in.. 6 days to go) blinksmiley.gif
(told the team I'm good for >2.5M PPD ohno-smiley.gif )

Probably some level of stability being tested on all three rigs. X79 hasn't stretched it's legs in a while, it looks like it's smiling.
Edited by Jpmboy - 2/2/16 at 5:41am
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x99
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z170/z270
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x79
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i7 5960X i7 6950X Asus Rampage V Extreme (STD and model-10) 2 GTX TitanX w/ EK Blocks & Backplates 
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Nvidia Tesla C-class 2 GTX Titan X Pascal (water cooled) GSkill 3200c14 TZs 8x8GB @ 3400c13 Intel 750 NVMe 400GB 
Hard DriveHard DriveHard DriveOptical Drive
Plextor 256GB M6e M.2 2x Plextor SSD 256 Raid 0 (Win 7) Samsung NVMe 950 Pro M.2 Plextor 810 
CoolingCoolingCoolingCooling
Aquacomputer GiGant 1680 (4x420) external Rad XSPC RX360 Koolance 380i Laing DDC-1T (2) 
CoolingOSOSOS
Koolance EXC-800 Chiller Windows 10 x64  Windows 7 Pro Linux Mint 
MonitorMonitorKeyboardPower
ASUS Swift 1440P 144Hz Seiki 50" 4K monitor (720P-2160i) 240-30Hz Das Keyboard Model S Pro Corsair AX1500i 
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G.Skill 4266c19 Samsung SM951 WD VR 300 Intel 750 NVMe U.2 
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Corsair H80iV2 (M8I) Windows 10 Pro Window 7 Linux Mint 
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Seiki 4K AOC 1080P Ducky Cherry Black Silverstone 500W SFX form factor/ Seasonic 760W 
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Bench Logitech G700s Ultimate Ears TF10s 
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i7 4960X @ 4.7 Asus Rampage IV Black Edition R9 295x2 w/ Koolance Block G Skill 2400 c9 (@ 2133c8) 
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