Overclock.net - An Overclocking Community - Reply to Topic

Thread: NEW!!! DRAM Calculator for Ryzen™ 1.7.3 (overclocking DRAM on AM4) + MEMbench 0.8 (DRAM bench) Reply to Thread
Title:
Message:

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


  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
06-06-2020 01:44 AM
Veii
Quote: Originally Posted by Bal3Wolf View Post
no post with those settings this ram is very picky it seems.
Can be my mistake try SCL 5 with tWRRD 3
06-06-2020 01:15 AM
bp7178 Does such a calculator exist for Intel?
06-06-2020 01:14 AM
Bal3Wolf
Quote: Originally Posted by Veii View Post
Please try this:

Except for SCL, transitions should be as clean as possible
Hopefully not hard to run
no post with those settings this ram is very picky it seems.
06-06-2020 12:33 AM
Dollar
Quote: Originally Posted by Veii View Post
Can you try for 1867/3734:
VDDP 900
VDDG CCD 925
VDDG IOD 975
VSOC 1100 (nearly no loadline drop here, as low drop as possible)

Then reverse them too if you keep erroring
and for 1800/3600:
VDDP 866
VDDG CCD 916
VDDG IOD 966
VSOC 1075 (with finetuned loadline to drop to >1066, or around 1068mV)
for science please
Yes of course I will try those and post the results when I can, thank you for the suggestions. I haven't been using any LLC so I will need to test and find which level to use. This was the droop seen on auto as reported in hwinfo SVI2 TFN:

SOC = 1.100 = 1.094 idle = 1.081 load
SOC = 1.025 = 1.019 idle = 1.012 load
SOC = 1.000 = 0.994 idle = 0.987 load
SOC = 0.975 = 0.969 idle = 0.962 load

On the 1900/3800 set I forgot to mention it will also boot and run TM5 for over an hour without showing any errors or crashing even with lower values of 900VDDP and 950VDDG but that WHEA is there.
06-06-2020 12:20 AM
Veii
Quote: Originally Posted by Dollar View Post
1866/3733 @1.000 VDDG, 1.100 SOC, 0.950 VDDP = Fully stable in TM5, prime95 large FFT, Linpack xtreme. If I drop VDDG to 0.950 the WHEA comes back at the 1 hour mark of large FFT.

1800/3600 @0.850 VDDG, 0.975 SOC, 0.800 VDDP = Fully stable in TM5, prime95 large FFT, Linpack xtreme. These low values are not typos. No WHEA or errors and benchmarks are not lowering.

Is it normal to see such a severe voltage wall from 1800/3600 to 1900/3800? 0.850 VDDG stable to 1.050 VDDG and still not stable seems crazy. Does this maybe indicate the board holding me back here or just unlucky 3700x?
Can you try for 1867/3734:
VDDP 900
VDDG CCD 925
VDDG IOD 975
VSOC 1100 (nearly no loadline drop here, as low drop as possible)

Then reverse them too if you keep erroring
and for 1800/3600:
VDDP 866
VDDG CCD 916
VDDG IOD 966
VSOC 1075 (with finetuned loadline to drop to >1066, or around 1068mV)
for science please
06-06-2020 12:12 AM
Veii
Quote: Originally Posted by Bal3Wolf View Post
still playing with it to be honest but heres as far as i made it so far without errors or pc not posting. I been doing 3-4 timings doing some testing a few more saving at each step and testing to see how it reacts, ram is a 32gig kit of F4-3200C16-8GTZKW.
Please try this:

Except for SCL, transitions should be as clean as possible
Hopefully not hard to run
06-05-2020 11:56 PM
Dollar
Quote: Originally Posted by 1usmus View Post
I think it'll help you
VDDG 1.05

I also want to say that the presence of this error may not affect the system stability. Unfortunately, C6H still has MBEC and some BIOS modules conflicts, so you should expect such situations. In my practice there is a situation when Zen2 refused to work stable on this board but was absolutely stable on X570. If you have the option, I recommend changing the motherboard to B550.
I have had time to test FCLK stability so I wanted to continue this discussion. The above post was about running into a WHEA error 19 bus/interconnect error correction at 1900/3800 speeds. I have found prime95 large FFT to be slightly faster than TM5 1usmus_v3 config at producing this WHEA error so I used that for most of my testing along with linpack xtreme and other benchmarks (cinebench r20, linpack gflops, photoworxx, dram calc bench) to make sure performance wasn't decreasing even though no errors were being reported. The results:

3700x
Asus Crosshair VI x370
4x8GB single rank samsung b-die a0 pcb

1900/3800 @1.050 VDDG, 1.100 SOC, 0.950 VDDP = Appears stable, it can keep running TM5 or large FFT error free for over an hour but will produce WHEA after only ten minutes.

1866/3733 @1.000 VDDG, 1.100 SOC, 0.950 VDDP = Fully stable in TM5, prime95 large FFT, Linpack xtreme. If I drop VDDG to 0.950 the WHEA comes back at the 1 hour mark of large FFT.

1800/3600 @0.850 VDDG, 0.975 SOC, 0.800 VDDP = Fully stable in TM5, prime95 large FFT, Linpack xtreme. These low values are not typos. No WHEA or errors and benchmarks are not lowering.


Is it normal to see such a severe voltage wall from 1800/3600 to 1900/3800? 0.850 VDDG stable to 1.050 VDDG and still not stable seems crazy. Does this maybe indicate the board holding me back here or just unlucky 3700x?
06-05-2020 10:38 PM
Bal3Wolf still playing with it to be honest but heres as far as i made it so far without errors or pc not posting. I been doing 3-4 timings doing some testing a few more saving at each step and testing to see how it reacts, ram is a 32gig kit of F4-3200C16-8GTZKW.
06-05-2020 10:29 PM
Veii
Quote: Originally Posted by Bal3Wolf View Post
Anyone had much luck using the DRAM Calculator on Samsung b-die K4A8G085WB-BCPB i did manage to overclock them from 3200 to 3600 but tighting any timings seems like a pain. What would be best ones to try to tweak to bring latency down ?

https://www.samsung.com/semiconducto...A8G085WB-BCPB/
Wheren't these known as B-Die V2, mostly found on Corsair 3200CL16-18-18 kits, when the buyer had luck ?
What guide did you follow ? Did you follow any or just pushed the first 4-6 timings up ?

3600 on "low end b-dies" is not bad at all
But what did you try, what's your current timings ?
https://github.com/irusanov/ZenTimings/releases
Which voltages ?
Cloning timings, i mean you have the DRAM calculator for that ~ but more important is what YOU have tried
06-05-2020 09:25 PM
Bal3Wolf Anyone had much luck using the DRAM Calculator on Samsung b-die K4A8G085WB-BCPB i did manage to overclock them from 3200 to 3600 but tighting any timings seems like a pain. What would be best ones to try to tweak to bring latency down ?

https://www.samsung.com/semiconducto...A8G085WB-BCPB/
This thread has more than 10 replies. Click here to review the whole thread.

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