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G.Skill 4266 DDR4 on Ryzen disscussion thread

38K views 203 replies 21 participants last post by  os2wiz 
#1 ·
Hey,

I sent everyone that I saw running this memory kit a PM, if I missed you, it was not intentional.

I was hoping since it appears that our memory is a rare choice for Ryzen that we could use this thread to share notes and help each other out.

I have had some pretty good luck on the Crosshair VI Hero bios 9945, but have struggled to find memory stability above 3466 MT/s.

Here is a list of my stable (at least 200% coverage of all memory in HCI memtest) Memory settings:

CH6 Bios 9945
1800x
2X G.Skill F4-4266C19D-16GTZR (2x8GB single rank)

Bios Settings:

compaired to Bios 0902 and 0081 I have found that I don't need to mess with as many BIOS settings in 9945.

The Fields below are the only fields modified from optimized defaults:

CPU LLC: level 2
DRAM Current limit: 110%
Dram Boot: 1.45v
Proc_ODT: 53.3 (only one that seams to work for me? You?)
CLDO_VDDP: depending on the "Strap"
Vdimm: 1.425v
SOC:" 1.135v
PLL: 1.81
SB: 1.05 entered manually
Core Boost: Disabled
(I think that is it, I will edit anything I forgot in later.)

I also set the failure retries to 5 (forgot name of bios field)

2x8GB sticks:

3200 MT/s

12-12-12-12-28 (All other timings auto)
-or-
14-14-14-14-32 (all other timings auto, vdim 1.35v)

CLDO_VDDP: 935
1T
Gear down: Disable
3200 strap
100 bclk

3333 MT/S

12-12-12-12-32 (all other timings auto)
-or
14-14-14-14-32 (all other timings auto)

CLDO_VDDP: 935
CL12: 2T
CL14: 1T
Gear down: Disabled (CL12), Enabled (CL14)
3333 strap
100 bclk

3466 MT/S

16-16-16-16-36
CLDO_VDDP: 880
1T
Gear Down: Enabled
3466 strap
100 bclk

3570 MT/S

16-16-16-16-36
CLDO_VDDP: 800
1T
Gear Down: Enabled
3466 strap
103 bclk

3600 MT/S

16-16-16-16-36-52-7-10-44 (in order in bios, top down), a few "autos" the tRFC, tRFC2, tRFC4 631-469-289
CLDO_VDDP: 800
1T
Gear Down: Enabled
3600 Strap
100 bclk

4x8GB sticks:

3200 MT/s

12-12-12-12-28 (All other timings auto)
-or-
14-14-14-14-32 (all other timings auto, vdim 1.35v)

CLDO_VDDP: 950
1T
Gear down: Disable
3200 strap
100 bclk

3466 MT/S

16-16-16-16-36
CLDO_VDDP: 885
1T
Gear Down: Enabled
3466 strap
100 bclk

I am working on 4x8GB 3600MT/s now, and will update with any results.

Here is table I made last night with some of my working memory settings and benchmark results, I will make a public google drive table that we all can submit results into:



Please share your settings and results!
 
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1
#2 ·
Very interested in testing this later. On 9943 I haven't managed stable low timings over 3466 - crashed on memtest.

Will load 9945 later and see if I can replicate the above. CLDO is interesting as I've been doing 930/975 and hadn't tried the 800 ranges.

Can you Cinebench the score at highest memory frequency? At 3925 CPU and 3200/C14 I average 1705-1710 range on first run with no bias on.
 
#3 ·
Quote:
Originally Posted by Gadfly View Post

Hey,

I sent everyone that I saw running this memory kit a PM, if I missed you, it was not intentional.

I was hoping since it appears that our memory is a rare choice for Ryzen that we could use this thread to share notes and help each other out.

I have had some pretty good luck on the Crosshair VI Hero bios 9945, but have struggled to find memory stability above 3466 MT/s.

Here is a list of my stable (at least 200% coverage of all memory in HCI memtest) Memory settings:

CH6 Bios 9945
1800x
2X G.Skill F4-4266C19D-16GTZR (2x8GB single rank)

Bios Settings:

compaired to Bios 0902 and 0081 I have found that I don't need to mess with as many BIOS settings in 9945.

The Fields below are the only fields modified from optimized defaults:

CPU LLC: level 2
DRAM Current limit: 110%
Dram Boot: 1.45v
Proc_ODT: 53.3 (only one that seams to work for me? You?)
CLDO_VDDP: depending on the "Strap"
Vdimm: 1.425v
SOC:" 1.135v
PLL: 1.81
SB: 1.05 entered manually
Core Boost: Disabled
(I think that is it, I will edit anything I forgot in later.)

I also set the failure retries to 5 (forgot name of bios field)

2x8GB sticks:

3200 MT/s

12-12-12-12-28 (All other timings auto)
-or-
14-14-14-14-32 (all other timings auto, vdim 1.35v)

CLDO_VDDP: 935
1T
Gear down: Disable
3200 strap
100 bclk

3333 MT/S

12-12-12-12-32 (all other timings auto)
-or
14-14-14-14-32 (all other timings auto)

CLDO_VDDP: 935
CL12: 2T
CL14: 1T
Gear down: Disabled (CL12), Enabled (CL14)
3333 strap
100 bclk

3466 MT/S

16-16-16-16-36
CLDO_VDDP: 880
1T
Gear Down: Enabled
3466 strap
100 bclk

3570 MT/S

16-16-16-16-36
CLDO_VDDP: 800
1T
Gear Down: Enabled
3466 strap
103 bclk

3600 MT/S

16-16-16-16-36-52-7-10-44 (in order in bios, top down), a few "autos" the tRFC, tRFC2, tRFC4 631-469-289
CLDO_VDDP: 800
1T
Gear Down: Enabled
3600 Strap
100 bclk

4x8GB sticks:

3200 MT/s

12-12-12-12-28 (All other timings auto)
-or-
14-14-14-14-32 (all other timings auto, vdim 1.35v)

CLDO_VDDP: 950
1T
Gear down: Disable
3200 strap
100 bclk

3466 MT/S

16-16-16-16-36
CLDO_VDDP: 885
1T
Gear Down: Enabled
3466 strap
100 bclk

I am working on 4x8GB 3600MT/s now, and will update with any results.

Here is table I made last night with some of my working memory settings and benchmark results, I will make a public google drive table that we all can submit results into:



Please share your settings and results!
Wow interessting, i will try this tonight after work...

thanks
 
#4 ·
I posted some bios screen shots for 3466c14 using the 4266c19 kit here
smile.gif
 
#5 ·
Tried a few of these so far, no luck yet at 3600/3570.
frown.gif


Ok, on 9945 I have 3466C16 running stable with your listed settings but two changes were required:

ProcODT set to 68.6.
CLDO set to 890.

I'm using TechPowerUp MemTest64 to determine stability initially (usually leave it for 15 mins and monitor it and HWInfo for WHEA errors).

Stable so far, will report back and push higher later.
 
#6 ·
Quote:
Originally Posted by ozzyo99 View Post

Tried a few of these so far, no luck yet at 3600/3570.
frown.gif


Ok, on 9945 I have 3466C16 running stable with your listed settings but two changes were required:

ProcODT set to 68.6.
CLDO set to 890.

I'm using TechPowerUp MemTest64 to determine stability initially (usually leave it for 15 mins and monitor it and HWInfo for WHEA errors).

Stable so far, will report back and push higher later.
I have not tried anything other than 53.3. I will retry the 3600 straps at 68, see it if helps.
 
#11 ·

Quote:
Originally Posted by ozzyo99 View Post

3466
14-14-14-14-34 1T
procODT 68.6
RAM 1.38 volts (not tried lower)
SOC 1.150
Ram Boot 1.45 volts

These are stable for me with CPU at 3925.
Not me if i try 1T it pass but keep crashing with blue screen in windows even with Ram volts at 1.45 and ram boot at 1.5

What works best for me for 3466 is

14-14-14-14-34 2T
procODT 60 over that is don't boot
SOC 1.150 will try 1.133 which is auto
Ram 1.375 will try 1.35
Ram boot now set to Auto and worked
 
#12 ·
Quote:
Originally Posted by Mitzrael777 View Post


Not me if i try 1T it pass but keep crashing with blue screen in windows even with Ram volts at 1.45 and ram boot at 1.5

What works best for me for 3466 is

14-14-14-14-34 2T
procODT 60 over that is don't boot
SOC 1.150 will try 1.133 which is auto
Ram 1.375 will try 1.35
Ram boot now set to Auto and worked
Wow ok i have retest 3466 and put back tons of things to stock settings like

SOC to Auto = 1.133
Ram Volts 1.35
Ram Boot Auto
Gear down now enabled
i actually set in DRAM Timing to 2T but both CPU-Z and hardware info detect 1T
timing are 14-14-14-14-34
the only things i change to make it boot at 3466 is procODT 60 instead of Auto all the rest i set to Auto Settings
 
#13 ·
Quote:
Originally Posted by Mitzrael777 View Post

Wow ok i have retest 3466 and put back tons of things to stock settings like

SOC to Auto = 1.133
Ram Volts 1.35
Ram Boot Auto
Gear down now enabled
i actually set in DRAM Timing to 2T but both CPU-Z and hardware info detect 1T
timing are 14-14-14-14-34
the only things i change to make it boot at 3466 is procODT 60 instead of Auto all the rest i set to Auto Settings
Ok it worked but didn't like it, after a memtest with actualy 0 errors, i stopped memtest and PC blue screen with error code Memory_managment.

So now it worked but with gear down disable, it now give me 2T instead of 1T and it is perfectly stable even with memtest for 10 minutes.

so what i changed over the procODT 60 is gear down disabled and that it

3466
14-14-14-14-34 2T
RAM 1.4 Volts (1.35 Volts Gave me error in Memtest64)
Gear Down disabled
all the rest at Auto nothing else changed
 
#16 ·
Quote:
Originally Posted by Gadfly View Post

Holy **** guys... check this out, My results from tonight; All of these are HCI tested stable. The 3200 strap and bclk OC is the way to go









Nice job! Just saw the other thread where someone points out AIDA is broken, could you do some CineBench scores alongside a couple of these? Curious to see what the benefits are alongside reported AIDA speed - might give us a better idea.

What's the settings you post for 1807?

With mine at 3925CPU and 3466/14 1T I'm getting 1710.
 
#17 ·
Quote:
Originally Posted by ozzyo99 View Post

Nice job! Just saw the other thread where someone points out AIDA is broken, could you do some CineBench scores alongside a couple of these? Curious to see what the benefits are alongside reported AIDA speed - might give us a better idea.

What's the settings you post for 1807?

With mine at 3925CPU and 3466/14 1T I'm getting 1710.
I fixed aida. I will rebench tomorrow.

Cb15 score was 1903 after the fix, 1850 before.

I am booting all the same settings, just at 100 bsclk, 3600 divider 16-16-16-16-36.

The 1807 was also same settings, just 113 bsclk on 3200 memory multiplier, and 14-14-14-14-34.

I will absolutely be reverting back to to 3200 divider as the 3600 divider requires 1.45v ram and 1.15 soc vs. 1.125 soc, 1.435v ram.

Cpu is booting 4.150ghz at 1.4v core across the board.
 
#18 ·
Quote:
Originally Posted by Gadfly View Post

I fixed aida. I will rebench tomorrow.

Cb15 score was 1903 after the fix, 1850 before.

I am booting all the same settings, just at 100 bsclk, 3600 divider 16-16-16-16-36.

The 1807 was also same settings, just 113 bsclk on 3200 memory multiplier, and 14-14-14-14-34.

I will absolutely be reverting back to to 3200 divider as the 3600 divider requires 1.45v ram and 1.15 soc vs. 1.125 soc, 1.435v ram.

Cpu is booting 4.150ghz at 1.4v core across the board.
Was wondering why your scores were so high but I see you're 1800x at 4.1.
 
#19 ·
Quote:
Originally Posted by Gadfly View Post

I fixed aida.
May I ask the fix? cheers
smile.gif
.
Quote:
Originally Posted by ozzyo99 View Post

Was wondering why your scores were so high but I see you're 1800x at 4.1.
I run BankGroupSwap: [Disabled] as per The Stilt's recommendation for 1 DPC SR kit. This has an effect on AIDA64 bench but other situations it may not. I have also been using the GSAT result for assessment of tweaks. On latest beta I have also noted some nutty results for cache, etc.
 
#20 ·
Quote:
Originally Posted by gupsterg View Post

May I ask the fix? cheers
smile.gif
.
I run BankGroupSwap: [Disabled] as per The Stilt's recommendation for 1 DPC SR kit. This has an effect on AIDA64 bench but other situations it may not. I have also been using the GSAT result for assessment of tweaks. On latest beta I have also noted some nutty results for cache, etc.
Not tried BGS as haven't seen too much info on it.

Definitely stable at 1768/16/1T which is better than I had previously. AIDA read is 52k @ 71ns.

Will try and reduce timings some more.
 
#21 ·
BGS I do believe does effect training. For example the CLDO_VDDP value that works for a RAM frequency hole with it enabled does not when disabled. Bank groups were introduced in DDR4. I did pose the question to The Stilt for more info, link. We see on DR or 2DPC SR it doesn't need disabling. Then also newer AGESA will be tuned for this aspect so we can start to ignore it. In that linked post is quote of me, there is a link to AMD bios/kernel PDF on previous gen and BGS had a hit in memory training.

So currently 1 dimm per channel, single rank, RAM kit users it is recommended to disable it. Like myself where I use A2/B2 or if used A1/B1.

I have TrdrdSc_SM to 1 , so when am at 3600MHz AIDA64 bench reads seems to be correct, but even then and at lower RAM MHz it can be all over the place at time
redface.gif
.
 
#25 ·
Quote:
Originally Posted by gupsterg View Post

May I ask the fix? cheers
smile.gif
.
I run BankGroupSwap: [Disabled] as per The Stilt's recommendation for 1 DPC SR kit. This has an effect on AIDA64 bench but other situations it may not. I have also been using the GSAT result for assessment of tweaks. On latest beta I have also noted some nutty results for cache, etc.
Hey gup,

I was booting at cpu 3300mhz and using aisuite to ramp coy speed up before I ran the benchmark, that was throwing aida off, so I now set 4150 in the bios and aida is back to normal.
 
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