NEW!!! DRAM Calculator for Ryzen™ 1.7.3 (overclocking DRAM on AM4) + MEMbench 0.8 (DRAM bench) - Page 775 - Overclock.net - An Overclocking Community
Forum Jump: 

NEW!!! DRAM Calculator for Ryzen™ 1.7.3 (overclocking DRAM on AM4) + MEMbench 0.8 (DRAM bench)

Reply
 
Thread Tools
post #7741 of 7823 (permalink) Old 05-22-2020, 07:16 PM
New to Overclock.net
 
yrelbirb's Avatar
 
Join Date: Mar 2020
Posts: 117
Rep: 2 (Unique: 2)
Quote: Originally Posted by Veii View Post
The tests do warn when the pagefile is locked, too small or disabled
Difference in testing time yes, in results i am not sure
They request their size, windows just adapts


The 2700X isn't anywhere near close to it's IMC limits
It only would approach bad signal integrity, if procODT is pushing over 53.3Ω up to set of memory
It has to be rather user error, while i think it's more dust related at this point
3200 has to boot up without issues on 2nd gen
Even with bad predicted settings hitting memory hole, 3200 has to run
The only reason why it wouldn't run is:
- Kit requires too high procODT over 60
- kit requires own set of RTT values, not being able to be predicted
- GDM rounding does trow off IntelXMP profile on it, or board is too stupid to predict correct tRFC and tRDWR values, refusing it to boot
- kit has dust and usage marks on the contacts and need some cleaning
- or kit is just DOA

yrelbirb, can you show a thaiphoon burner report or read out your micron b-dies - corsair version on the sticker
Just for personal comparison sake, i'm curious about them
Your HynixCJR was 18nm or 16nm
I saw they where A2 pcb, soo you will for sure have issues with bad signal integrity and need higher drive impedance
(higher CAD_BUS ClkDrvStrengh ~ first value, near 40-60ohm, if not exceeding 100ohm up to IC)

-
here you are

i tried tons of different combos all day, no luck. i also tried to put tRFC and tWRRD manually (tried 1usmus timings, tried some of my own timings, tried 75 tRC and according tRFC from your calculator (trfc calculator)).

kits are brand new, no dust on them

it is probably doa, or mobo can't get to know it no idealar though
Attached Thumbnails
Click image for larger version

Name:	nice.png
Views:	8
Size:	49.8 KB
ID:	348330  


ryzen 2700x / gigabyte b450 gaming x
yrelbirb is offline  
Sponsored Links
Advertisement
 
post #7742 of 7823 (permalink) Old 05-22-2020, 07:41 PM
Stock is too casual~
 
Veii's Avatar
 
Join Date: Aug 2018
Location: Austria / Bulgaria
Posts: 1,281
Rep: 78 (Unique: 46)
Quote: Originally Posted by paih85 View Post
Hi @Veii ,

i have test your suggestion timing 3800mhz @ gdm on. so far so good. anything else i can do to make it tighter? now at 1.4v vdimm & 1.05 vddg. for your info my best stable gdm off is 3600c15 as below.
You know what i find interesting,
Even tho we have SCL difference, and 200MT/s difference
~ the TM5 time was quite close between this two sets

I wonder if it's worth for you to run GDM disabled at lower speed
How much voltage did that GDM off result require ?

You can get away GDM and stay on 2T with odd timings, if you want
Or stay on GDM but CL14 will take some voltage, CL15 would be easier under 2T @ 3800

It would be great to compare SiSoftware Sandra Multi-Core Efficiency Results between these two sets
IF Bandwidth shouldn't be much difference, when the tests take very similar time to complete
But i wonder about inter-core latency
Overall i'm happy that the different tRAS calculation method works well

We can tighten it further the GDM on result, but the jumps are big

I don't know if you can run tRCD RD 16 and how much voltage that would require
But we can try later, interesting is for now if you'd be fine with low tRFC

@yrelbirb did you try fixing cLDO_VDDP down to 700mV or up to 913mV for typical 3200MT/s results
I remember how bugged Gigabyte old bioses where
Dynamic vSOC is not tracked via SVI2 sensor and has it's own brain
Can you force fixed vSOC and modify any kind of loadlines ?
Do you have the AMD CBS menu, and so in it either inside DF or NBIO an SOC VID field to enter there SOC maybe ?

I'd have to check if there where bios mods for your specific boards, but know atm how bugged B350 Gigabyte Gaming 3 behaves
Even with an "everything unlocked" mod
Also, on what AGESA are you atm ?

SiSandra Inter-Core Bandwith 14nm Ryzen global #1 | Twitter
Personal Records
RAM > Viper Steel @ 3466C14 (64.2ns) & Alt | Hynix-MFR 3333CL14 (72.5ns) & Alt

GPU > Gigabyte 970 G1 @ 1595|1900 (Hynix) | RX 580 Red Devil GS @ 1620|2200 (Micron)
CPU > TR 1950X [email protected]1.2v & [email protected]1.365v[105Mhz FSB](3.23Beta)
#Main: 1700X [email protected]1.365v1.73Ghz IMC CL14 (64.2ns)」+ Dark Rock 3 | X370 Taichi 1.0.0.3 ABBA by The Stilt | Viper Steel [PVS416G400C9K]| Gigabyte 970 G1 | Samsung 850 Evo

Last edited by Veii; 05-22-2020 at 07:49 PM.
Veii is offline  
post #7743 of 7823 (permalink) Old 05-22-2020, 08:07 PM
New to Overclock.net
 
paih85's Avatar
 
Join Date: Jul 2015
Posts: 58
Rep: 0
Quote: Originally Posted by Veii View Post
You know what i find interesting,
Even tho we have SCL difference, and 200MT/s difference
~ the TM5 time was quite close between this two sets

I wonder if it's worth for you to run GDM disabled at lower speed
How much voltage did that GDM off result require ?

You can get away GDM and stay on 2T with odd timings, if you want
Or stay on GDM but CL14 will take some voltage, CL15 would be easier under 2T @ 3800

It would be great to compare SiSoftware Sandra Multi-Core Efficiency Results between these two sets
IF Bandwidth shouldn't be much difference, when the tests take very similar time to complete
But i wonder about inter-core latency
Overall i'm happy that the different tRAS calculation method works well

We can tighten it further the GDM on result, but the jumps are big

I don't know if you can run tRCD RD 16 and how much voltage that would require
But we can try later, interesting is for now if you'd be fine with low tRFC

@yrelbirb did you try fixing cLDO_VDDP down to 700mV or up to 913mV for typical 3200MT/s results
I remember how bugged Gigabyte old bioses where
Dynamic vSOC is not tracked via SVI2 sensor and has it's own brain
Can you force fixed vSOC and modify any kind of loadlines ?
Do you have the AMD CBS menu, and so in it either inside DF or NBIO an SOC VID field to enter there SOC maybe ?

I'd have to check if there where bios mods for your specific boards, but know atm how bugged B350 Gigabyte Gaming 3 behaves
Even with an "everything unlocked" mod
Also, on what AGESA are you atm ?


both my 3600c15 & 3800c16 (gdm on) is at 1.4v vdimm. yes im more interested gdm off but always got error @3733/3800mhz gdm off 1T. let me try this tight 3800 gdm 1st. then we go next gdm off 2t. anyway thanks bro.
paih85 is offline  
Sponsored Links
Advertisement
 
post #7744 of 7823 (permalink) Old 05-22-2020, 08:09 PM
New to Overclock.net
 
yrelbirb's Avatar
 
Join Date: Mar 2020
Posts: 117
Rep: 2 (Unique: 2)
Quote: Originally Posted by Veii View Post
You know what i find interesting,
Even tho we have SCL difference, and 200MT/s difference
~ the TM5 time was quite close between this two sets

I wonder if it's worth for you to run GDM disabled at lower speed
How much voltage did that GDM off result require ?

You can get away GDM and stay on 2T with odd timings, if you want
Or stay on GDM but CL14 will take some voltage, CL15 would be easier under 2T @ 3800

It would be great to compare SiSoftware Sandra Multi-Core Efficiency Results between these two sets
IF Bandwidth shouldn't be much difference, when the tests take very similar time to complete
But i wonder about inter-core latency
Overall i'm happy that the different tRAS calculation method works well

We can tighten it further the GDM on result, but the jumps are big

I don't know if you can run tRCD RD 16 and how much voltage that would require
But we can try later, interesting is for now if you'd be fine with low tRFC

@yrelbirb did you try fixing cLDO_VDDP down to 700mV or up to 913mV for typical 3200MT/s results
I remember how bugged Gigabyte old bioses where
Dynamic vSOC is not tracked via SVI2 sensor and has it's own brain
Can you force fixed vSOC and modify any kind of loadlines ?
Do you have the AMD CBS menu, and so in it either inside DF or NBIO an SOC VID field to enter there SOC maybe ?

I'd have to check if there where bios mods for your specific boards, but know atm how bugged B350 Gigabyte Gaming 3 behaves
Even with an "everything unlocked" mod
Also, on what AGESA are you atm ?

im on F50 bios 1.0.0.4 b

i just would like to add, kit doesn't even boot at combos like;

2666 22-22-22
2666 19-19-19 and so on. it's not a high speed issue actually. it's just that kit refuses to boot for anything higher than >2400 mt/s

--

yes, i have fixated soc voltage on my setup. i usually set it to 1.025.

i tried auto (0), tried 1.05, tried 1.1, tried 1.0 and tried 1.0125, no boots

--

vor vddp, yup. tried .700 tried all the vddp values 1usmus suggested (he had a list of values, i dont know i tried all of them)

--

i seriosuly started fear that I will brick the board with so many failed boots xdd

ryzen 2700x / gigabyte b450 gaming x
yrelbirb is offline  
post #7745 of 7823 (permalink) Old 05-22-2020, 08:50 PM
Graphic Card Addiction
 
Hequaqua's Avatar
 
Join Date: Nov 2014
Location: North Carolina
Posts: 3,928
Rep: 183 (Unique: 126)
Quote: Originally Posted by Veii View Post
Change your timings up a tiny bit if possible
tRCD WR 14
tRCD RD 18
tRAS 32
tRC 44
tRFC 308-229-141
tWR 14
tCWL 16
I've tried numerous settings...some from you before, some from the calc...and these are what I know are stable. I've been running them since last Aug/Sept.

Quote: Originally Posted by Veii View Post
you have GDM on, it will round up - and added latency performs far lower than you fixing it by hand
Which kits are you chaining together exactly
GSkill Trident Z F4-3466C16D-16GTZR
Patriot Viper Steel PVS416G400C9K

Quote: Originally Posted by Veii View Post
Is this board T-Topology ?
I believe so....Gigabyte X470 Aorus Gaming 7 Wifi


Quote: Originally Posted by Veii View Post
Would be interesting to know which memory PCB you chain together - as you might get some significant perf out of it, by putting better kits as the main
While worse ones as slave 1s,3rd slot
I'd also suggest to enable BGS with 4 kits when you want them to work together a bit better
Here are the Thaiphoon Reading for each if that helps:
Click image for larger version

Name:	snap5222020113545PM.png
Views:	6
Size:	40.3 KB
ID:	348398Click image for larger version

Name:	snap5222020113610PM.png
Views:	5
Size:	33.3 KB
ID:	348400

Quote: Originally Posted by Veii View Post
In the future you might also be able to run
tRDWR 9, tWRRD 3 - to give it a bit more bandwidth boost
SCL under 4 i can't imagine sadly here
Rest looks good
Just consider sideeffects of GDM
I'll see what else I can do with them. Thanks for help and info.

Offical Ryzen 7 3700X Owner!
=[Official] Ryzen-5-Owners-Club 2600X=
MSI RTX 2070 Gaming Z
Fire Strike 23405 Overall 26125 Graphics 25041 Physics 12459 Combined
Time Spy 10644 Overall 10584 Graphics 11000 CPU
https://www.3dmark.com/3dm/41820044
Gespenst
(26 items)
Rigor Mortis
(20 items)
Lassie
(14 items)
CPU
Ryzen Zen 2 3700X [email protected]
Motherboard
Gigabyte X470 AORUS GAMING 7 WIFI
GPU
MSI RTX 2070 Gaming Z
RAM
G.SKILL TridentZ RGB F4-3466C16D-16GTZR([email protected] 1.38v)
Hard Drive
Silicon Power 512GB(SP512GBP34A80M28)[Benchmarking]
Hard Drive
Western Digital Blue 1tb (External)Back Up
Hard Drive
Seagate Firecuda 2tb(ST2000DX002-2DV164)[Downloads/Editing]
Hard Drive
Samsung 860 Evo 1tb[Steam/Origin]
Hard Drive
TeamGroup Delta RGB 1tb 5v Header[Games]
Hard Drive
Western Digital WD BLACK SN750 NVMe 500gb w/heatsink
Power Supply
EVGA Supernova G2 850w
Cooling
Bykski DDC Pump/96mm Res(B-PMD3-COV+CT96)
Cooling
FormulaMod Aura aRGB 120mm*3
Cooling
FormulaMod aRGB 120mm*3
Cooling
Watercool HEATKILLER® IV PRO ACRYL (18014)
Cooling
FormulaMod Fm-CoRa2H Rad 39mm*360m
Case
Phanteks Eclipse P600S Anthracite Grey
Operating System
Windows 10 Pro
Monitor
Acer KG271 Cbmidpx 27" Main Monitor 144mhz
Monitor
Acer S271HL 27" Secondary Monitor
Keyboard
Gigabyte Mechanical Cherry Blue Keyboard (GK-FORCE K83 BLUE)
Mouse
Redragon M602 RGB Wired Gaming Mouse RGB
Mousepad
ENHANCE LED Gaming Mouse Pad Hard Large Surface
Audio
Mpow 2.4G Wireless Gaming Headset
Other
ENHANCE Pro Gaming Mouse Bungee Cable Holder 4 Port USB Hub with 7 LED Modes
Other
FormulaMod Fm-TBJXQ, Sata Type 5v 3pin RGB Synchronization Hub
CPU
AMD Ryzen 2700
Motherboard
Gigabyte B450 Aorus Elite
GPU
GIGABYTE GeForce GTX 1080 G1 Gaming GV-N1080G1 GAMING-8GD
RAM
OLOy WarHawk RGB 3000mhz MD4U083016BEDA(OC 3200mhz)
Hard Drive
Corsair Force MP500 M.2 CSSD-F120GBMP500 120gb
Hard Drive
Seagate FireCuda Gaming SSHD ST2000DX002 2TB
Hard Drive
Silicon Power Slim S55 SP480GBSS3S55S25 480gb
Hard Drive
WD Blue WD10EZEX 1TB
Hard Drive
Seagate 600 Series ST240HM000 240gb
Power Supply
EVGA SuperNOVA 750 G2 220-G2-0750-XR 750w
Cooling
DeepCool Castle 240 RGB
Case
Cougar Panzer-S Transparent Fortress
Operating System
Windows10 Pro
Monitor
Acer GN246HL 24" 144hz
Monitor
AOC E2425SWD 24" 60hz
Keyboard
ENHANCE Infiltrate Membrane Gaming Keyboard
Mouse
ENHANCE PowerUP Wireless Gaming Mouse
Mousepad
ENHANCE PowerUP Wireless Charging LED Mouse Pad
Audio
Letton Wireless Headset 7.1
Other
Oculus Rift S
CPU
AMD 2600X
Motherboard
Gigabyte B450 Aorus Pro Wifi
GPU
Asus ROG Strix GTX1660 Super Advanced
RAM
Oloy Warhawk RGB 16gb 3000mhz MD4U083016BEDA
Hard Drive
Samsung 970 Evo 250gb MZ-V7E250BW
Hard Drive
Kingston SV300S37A SSD 120gb
Hard Drive
Seagate ST3250318A
Hard Drive
WD 5000AAKX 500gb
Power Supply
Rosewill Capstone 750
Cooling
EVGA CLC240
Cooling
Yate-Loon High Speed(Red) 140mm
Cooling
BitFenix Spectre Pro Solid White 140mm
Case
Phanteks Enthroo Pro
Operating System
Windows 10 Pro
▲ hide details ▲


Hequaqua is offline  
post #7746 of 7823 (permalink) Old 05-22-2020, 09:24 PM
New to Overclock.net
 
Join Date: Dec 2019
Posts: 72
Rep: 4 (Unique: 4)
Even after reading Veii's guide I still can't grasp how to calculate trdwr and twrrd....



For example Hequaua's G.Skill xmp timings posted above of 16-18-18-18 what is the correct trdwr/twrrd here with four single rank sticks and SCL at 4?
Dollar is offline  
post #7747 of 7823 (permalink) Old 05-22-2020, 09:55 PM
Graphic Card Addiction
 
Hequaqua's Avatar
 
Join Date: Nov 2014
Location: North Carolina
Posts: 3,928
Rep: 183 (Unique: 126)
Quote: Originally Posted by Dollar View Post
Even after reading Veii's guide I still can't grasp how to calculate trdwr and twrrd....

For example Hequaua's G.Skill xmp timings posted above of 16-18-18-18 what is the correct trdwr/twrrd here with four single rank sticks and SCL at 4?
Don't feel bad.....I'm almost as clueless.....lol

Here are a couple of interesting reads that might help:

https://github.com/integralfx/MemTes...mings-relation

As for the timings in your question...this post is a link for the AMD portion that you are asking about:

https://www.reddit.com/r/overclockin...g_on_ryzen_oc/
_________________________________________________

@Veii;

I got the first set of timings changed...all the odd to even, disabled GDM. While I didn't get to "test", the computer did reboot.

Then came the headache.....I changed tWR 14>12 tCWL16>14 tRDWR 9>10 tWRRD 3>1.....got stuck in a loop where I never got a bios logo, just black screen with the computer ramping up and down along with the fans and water pump. I finally killed the power....cleared the CMOS several times.....FINALLY got back into the bios.

ATM I'm back on my 3666 timings. It's late here....I'll maybe mess with it some more tomorrow. Oh, on the BGS, I know it was in a earlier bios...but I can't find it now. I look again tomorrow.

Thanks!

Offical Ryzen 7 3700X Owner!
=[Official] Ryzen-5-Owners-Club 2600X=
MSI RTX 2070 Gaming Z
Fire Strike 23405 Overall 26125 Graphics 25041 Physics 12459 Combined
Time Spy 10644 Overall 10584 Graphics 11000 CPU
https://www.3dmark.com/3dm/41820044
Gespenst
(26 items)
Rigor Mortis
(20 items)
Lassie
(14 items)
CPU
Ryzen Zen 2 3700X [email protected]
Motherboard
Gigabyte X470 AORUS GAMING 7 WIFI
GPU
MSI RTX 2070 Gaming Z
RAM
G.SKILL TridentZ RGB F4-3466C16D-16GTZR([email protected] 1.38v)
Hard Drive
Silicon Power 512GB(SP512GBP34A80M28)[Benchmarking]
Hard Drive
Western Digital Blue 1tb (External)Back Up
Hard Drive
Seagate Firecuda 2tb(ST2000DX002-2DV164)[Downloads/Editing]
Hard Drive
Samsung 860 Evo 1tb[Steam/Origin]
Hard Drive
TeamGroup Delta RGB 1tb 5v Header[Games]
Hard Drive
Western Digital WD BLACK SN750 NVMe 500gb w/heatsink
Power Supply
EVGA Supernova G2 850w
Cooling
Bykski DDC Pump/96mm Res(B-PMD3-COV+CT96)
Cooling
FormulaMod Aura aRGB 120mm*3
Cooling
FormulaMod aRGB 120mm*3
Cooling
Watercool HEATKILLER® IV PRO ACRYL (18014)
Cooling
FormulaMod Fm-CoRa2H Rad 39mm*360m
Case
Phanteks Eclipse P600S Anthracite Grey
Operating System
Windows 10 Pro
Monitor
Acer KG271 Cbmidpx 27" Main Monitor 144mhz
Monitor
Acer S271HL 27" Secondary Monitor
Keyboard
Gigabyte Mechanical Cherry Blue Keyboard (GK-FORCE K83 BLUE)
Mouse
Redragon M602 RGB Wired Gaming Mouse RGB
Mousepad
ENHANCE LED Gaming Mouse Pad Hard Large Surface
Audio
Mpow 2.4G Wireless Gaming Headset
Other
ENHANCE Pro Gaming Mouse Bungee Cable Holder 4 Port USB Hub with 7 LED Modes
Other
FormulaMod Fm-TBJXQ, Sata Type 5v 3pin RGB Synchronization Hub
CPU
AMD Ryzen 2700
Motherboard
Gigabyte B450 Aorus Elite
GPU
GIGABYTE GeForce GTX 1080 G1 Gaming GV-N1080G1 GAMING-8GD
RAM
OLOy WarHawk RGB 3000mhz MD4U083016BEDA(OC 3200mhz)
Hard Drive
Corsair Force MP500 M.2 CSSD-F120GBMP500 120gb
Hard Drive
Seagate FireCuda Gaming SSHD ST2000DX002 2TB
Hard Drive
Silicon Power Slim S55 SP480GBSS3S55S25 480gb
Hard Drive
WD Blue WD10EZEX 1TB
Hard Drive
Seagate 600 Series ST240HM000 240gb
Power Supply
EVGA SuperNOVA 750 G2 220-G2-0750-XR 750w
Cooling
DeepCool Castle 240 RGB
Case
Cougar Panzer-S Transparent Fortress
Operating System
Windows10 Pro
Monitor
Acer GN246HL 24" 144hz
Monitor
AOC E2425SWD 24" 60hz
Keyboard
ENHANCE Infiltrate Membrane Gaming Keyboard
Mouse
ENHANCE PowerUP Wireless Gaming Mouse
Mousepad
ENHANCE PowerUP Wireless Charging LED Mouse Pad
Audio
Letton Wireless Headset 7.1
Other
Oculus Rift S
CPU
AMD 2600X
Motherboard
Gigabyte B450 Aorus Pro Wifi
GPU
Asus ROG Strix GTX1660 Super Advanced
RAM
Oloy Warhawk RGB 16gb 3000mhz MD4U083016BEDA
Hard Drive
Samsung 970 Evo 250gb MZ-V7E250BW
Hard Drive
Kingston SV300S37A SSD 120gb
Hard Drive
Seagate ST3250318A
Hard Drive
WD 5000AAKX 500gb
Power Supply
Rosewill Capstone 750
Cooling
EVGA CLC240
Cooling
Yate-Loon High Speed(Red) 140mm
Cooling
BitFenix Spectre Pro Solid White 140mm
Case
Phanteks Enthroo Pro
Operating System
Windows 10 Pro
▲ hide details ▲


Hequaqua is offline  
post #7748 of 7823 (permalink) Old 05-22-2020, 10:13 PM
Stock is too casual~
 
Veii's Avatar
 
Join Date: Aug 2018
Location: Austria / Bulgaria
Posts: 1,281
Rep: 78 (Unique: 46)
Quote: Originally Posted by Dollar View Post
Even after reading Veii's guide I still can't grasp how to calculate trdwr and twrrd....
For example Hequaua's G.Skill xmp timings posted above of 16-18-18-18 what is the correct trdwr/twrrd here with four single rank sticks and SCL at 4?
There are tiny exceptions on that
Dual rank is one of them, but dimm amount isn't
tRCD 18 would be tRDWR 9 / tWRRD 1
but because both tRCDs are 18 , the other option is tRDWR 9 / tWRRD 4
if tRCD WR would be 20 (which is dumb but who knows) - then it would be 9 / 5

If you have SCL of let's say 6 instead of 4, then you can do two things
either give it a higher tRDWR in this case of 10/1 - or you use 9/3 , because 4*6 SCL would be too high
It has many exceptions, i see why it's complicated

You only push tWRRD if you put tRDWR too low, to give it a bit of latency
Or you also have to push tWRRD if tRDWR is less than a perfect half of tRCD WR
Example:
16-12-24-18-34-52
You can use here tRDWR 13/1 (it can be more) and often 12/1 works too (this is perfect half)
You can use tRDWR 11/4 too
logically 12 would be tWRRD 3 which can work and technically to the ruleset is correcT
but 4 is the one to use because of an exception which i haven't told

the reason tRAS here is not 16+24=40 / tCL+tRCD (biggest) is a tiny exception in scaling
Look at tRCD WR 12 (which goes down to maximum half of tRCD RD)
the middle-value between these two (10 & 24) is 18, soo technically real wait delay is virtual value 18
tCL 16+ tRCD delay 18 = 34 tRAS
Because tRCD value is 18, and 4x something for tWRRD works with 4x4=16 , you use tWRRD 4 here
Where 3 would work too but 4 will be better

tWRRD added delay has just to be as close as possible to tRCD WR, there is no need to be a perfect half
But it has to be close, and it should not overshoot it
Well unless you use this tRAS calculation exception, but still it's not overshooting
tWRRD of 5 = 4*5=20 would be then too much , soo 4 or 3 should be used
Ooor you just don't use it at all and keep tRDWR no less than perfect half, or higher to compensate with added latency for harsh timings

Another doublecheck on tRAS ruleset you can then do with tRAS-tRCD to get out optimal tWR
And minimum tWR with tRRD_S+tWTR_S (as absolute lowest, when we can go under value 10 somedayTM)

Exception Dual Rank:
Dual rank seems to need exactly +2 on tRDWR
The math remains the same
if this would've been dual rank kits, the optimal for 16-18-18 would be tRDWR 11/1 or with used exception, down to tRDWR 10/4

Boards are today intelligent enough to calculate tWRRD need, but they don't know the exception method to lower it one step futher
The exception method won't work if you use tCWL smaller than tCL=tCWL
Somehow it messes it up, while normally you can go down to -2 of tCL=tCWL
Well tested perf shows, lower tRDWR still has better perf than lower tCWL

SiSandra Inter-Core Bandwith 14nm Ryzen global #1 | Twitter
Personal Records
RAM > Viper Steel @ 3466C14 (64.2ns) & Alt | Hynix-MFR 3333CL14 (72.5ns) & Alt

GPU > Gigabyte 970 G1 @ 1595|1900 (Hynix) | RX 580 Red Devil GS @ 1620|2200 (Micron)
CPU > TR 1950X [email protected]1.2v & [email protected]1.365v[105Mhz FSB](3.23Beta)
#Main: 1700X [email protected]1.365v1.73Ghz IMC CL14 (64.2ns)」+ Dark Rock 3 | X370 Taichi 1.0.0.3 ABBA by The Stilt | Viper Steel [PVS416G400C9K]| Gigabyte 970 G1 | Samsung 850 Evo

Last edited by Veii; 05-22-2020 at 11:34 PM.
Veii is offline  
post #7749 of 7823 (permalink) Old 05-22-2020, 10:40 PM
Stock is too casual~
 
Veii's Avatar
 
Join Date: Aug 2018
Location: Austria / Bulgaria
Posts: 1,281
Rep: 78 (Unique: 46)
Quote: Originally Posted by Hequaqua View Post
@Veii;
I got the first set of timings changed...all the odd to even, disabled GDM. While I didn't get to "test", the computer did reboot.

Then came the headache.....I changed tWR 14>12 tCWL16>14 tRDWR 9>10 tWRRD 3>1.....got stuck in a loop where I never got a bios logo, just black screen with the computer ramping up and down along with the fans and water pump. I finally killed the power....cleared the CMOS several times.....FINALLY got back into the bios.

ATM I'm back on my 3666 timings. It's late here....I'll maybe mess with it some more tomorrow. Oh, on the BGS, I know it was in a earlier bios...but I can't find it now. I look again tomorrow.

Thanks!
The only thing i see that will cause no post is CWL to 14 when tCL is 16
GDM does round that always up and uses tCKE if you have GDM active
Soo you would never notice anything strange except just higher memory latency and a bit less performance
tCWL lower than tCL won't work if you lower tRDWR less than half of tRCD ~ aka use the exception method
half tRCD works nearly always perfectly, and +1 is added for stability (well or when tRFC is lower calculated)
+1 tRDWR is also added when you want to push tCWL lower and +2 is added for dual rank kits on it's current state

Did you reverse the arrows by accident or ?
You shouldn't run tCWL lower than tCL unless you clearly know why you want to lower that one
the -1 method for lowering tRDWR only works when there is no wasted latency anywhere else
Aka tRAS is a clean transition, tRC is a clean transition
You have to try - it always works unless something else is odd , it's not b-die exclusive and works even for hynixMFR

The trick does scale a bit with frequency i noticed, but i haven't had issues with it
You only notice that it's wrong when two events happen:
- TM5 errors with MirrorMove test errors, that's a clear indication
- You can't post at all

Low or wrong tWR will cause errors after errors and mostly error on 6&12 for TM5
Sometimes also error on SimpleTest size 8mb = burst tests
But it has a pattern when it's clearly wrong and doesn't just plain "not post"
more tRDWR shouldn't error at all, as it's just added latency and not really a "timing"
Here the old guide on tRDWR & tWRRD again
~ color-coded should be understandable, no ?
https://www.overclock.net/forum/10-a...l#post28385690

SiSandra Inter-Core Bandwith 14nm Ryzen global #1 | Twitter
Personal Records
RAM > Viper Steel @ 3466C14 (64.2ns) & Alt | Hynix-MFR 3333CL14 (72.5ns) & Alt

GPU > Gigabyte 970 G1 @ 1595|1900 (Hynix) | RX 580 Red Devil GS @ 1620|2200 (Micron)
CPU > TR 1950X [email protected]1.2v & [email protected]1.365v[105Mhz FSB](3.23Beta)
#Main: 1700X [email protected]1.365v1.73Ghz IMC CL14 (64.2ns)」+ Dark Rock 3 | X370 Taichi 1.0.0.3 ABBA by The Stilt | Viper Steel [PVS416G400C9K]| Gigabyte 970 G1 | Samsung 850 Evo
Veii is offline  
post #7750 of 7823 (permalink) Old 05-23-2020, 12:07 AM
New to Overclock.net
 
Join Date: Dec 2019
Posts: 72
Rep: 4 (Unique: 4)
Quote: Originally Posted by Veii View Post
There are tiny exceptions on that
Dual rank is one of them, but dimm amount isn't
tRCD 18 would be tRDWR 9 / tWRRD 1
but because both tRCDs are 18 , the other option is tRDWR 9 / tWRRD 4

Thank you for the extensive explanation.



I just put those timings on my system to hopefully learn something and I was wondering why tRDWR 9 / tWRRD 1 won't even post but tRDWR 9 / tWRRD 4 is stable? 4x8 GB single rank viper steel samsung b-die a0 PCB on T-Topology x370 crosshair VI. I read through your post three times, 9/1 should work on this setup right? What am I not understanding? be gentle.
Attached Images
 
Dollar is offline  
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Overclock.net - An Overclocking Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 7 (0 members and 7 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off