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Thread: NEW!!! DRAM Calculator for Ryzen™ 1.5.1 (overclocking DRAM on AM4) + MEMbench 0.7 (DRAM bench) Reply to Thread
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  Topic Review (Newest First)
06-19-2019 12:59 AM
Filters83
Quote: Originally Posted by thomasck View Post
That's pretty much normal as you increase ram speed normally you would increase vcore a bit to help the imc. Is good to point this out as some times can solve a problem.

Sent from my HTC U11 using Tapatalk
Depedens im on same cpu 2600x unrdevolt -0.5 no pbo but whit ram oc 3466 fast settings at 1.4v and 1.025 on soc B die chip and i dont need more cpu voltage here, if i try to go up then i probably need, so i mean evry cpu its different maby for him the limit was 3400mhz on ram for no need on more cpu voltage aswell, and motherboard aswell cause im on a strix 450-f now and before on the x-370-f i wasnt able to clock ram like this in no way
06-18-2019 02:46 PM
thomasck
Quote: Originally Posted by rul3s View Post
Hi guys!

I've found that HCI also encounters memory errors when vcore is so close to the edge of crashing, but not enought to chash, I explain.

Doing manual and fixed OC on my 2600x, I've found that [email protected] was stable on Realbench OCCT, but sometimes playing I've had some crashes, specially on PUBG.

My RAM config was [email protected] as Ryzen DRAM calculator says, with 1.40 on dram and 1.025 on vsoc. Well, so running HCI was giving me 1 or 2 errors on 400-500%.

Tried rising vdimm and also vsoc until 1.5 on vdimm and 1.20v on vsoc, but same experience, my only way to not hving errors was going down to [email protected]



After some research and test I finally tried to go rise vcore to 1,3125 and errors where solved, and now running [email protected] with vdimm on 1.38 and vsoc on 1.00v.



So, in my experience try to add a little bit more of vcore if experiencing very few errors on HCI.
That's pretty much normal as you increase ram speed normally you would increase vcore a bit to help the imc. Is good to point this out as some times can solve a problem.

Sent from my HTC U11 using Tapatalk
06-18-2019 02:36 PM
nick name
Quote: Originally Posted by Keith Myers View Post
I would do a search on ECC RAM bit flips vs temp. I would bet there are some research papers on that discussion which might show how data integrity changes with temperature.
I've found several resources that discuss it, but not in relation to overclocking of RAM. I'm will look into what you suggested though.
06-18-2019 02:00 PM
Keith Myers
Research on ECC bit flips vs temp

Quote: Originally Posted by nick name View Post
Does anyone know of any literature exploring DRAM temps and their impact on performance when the DRAM is not run within spec? Everything I find uses temps like 85*C and discusses RAM designed to run within that spec. I want to find something (other than anecdotal findings) that explores overclocked RAM and their temperature thresholds before errors.
I would do a search on ECC RAM bit flips vs temp. I would bet there are some research papers on that discussion which might show how data integrity changes with temperature.
06-18-2019 01:11 PM
nick name Does anyone know of any literature exploring DRAM temps and their impact on performance when the DRAM is not run within spec? Everything I find uses temps like 85*C and discusses RAM designed to run within that spec. I want to find something (other than anecdotal findings) that explores overclocked RAM and their temperature thresholds before errors.
06-17-2019 11:50 AM
herericc
Quote: Originally Posted by rul3s View Post
Hi guys!
I've found that HCI also encounters memory errors when vcore is so close to the edge of crashing, but not enought to chash, I explain.
Doing manual and fixed OC on my 2600x, I've found that [email protected] was stable on Realbench OCCT, but sometimes playing I've had some crashes, specially on PUBG.
My RAM config was [email protected] as Ryzen DRAM calculator says, with 1.40 on dram and 1.025 on vsoc. Well, so running HCI was giving me 1 or 2 errors on 400-500%.
Tried rising vdimm and also vsoc until 1.5 on vdimm and 1.20v on vsoc, but same experience, my only way to not hving errors was going down to [email protected]

After some research and test I finally tried to go rise vcore to 1,3125 and errors where solved, and now running [email protected] with vdimm on 1.38 and vsoc on 1.00v.

So, in my experience try to add a little bit more of vcore if experiencing very few errors on HCI.
That's good to know - I've noticed that when I do get errors in DRAM BENCH from the calculator they tend to be a streak of errors on a certain thread. Could be that particular thread on the processor is a little bit unstable due to PBO + undervolt... I'll have to try getting stability on RAM with PBO on stock settings and then work my way back from there.
06-17-2019 09:10 AM
rul3s Hi guys!
I've found that HCI also encounters memory errors when vcore is so close to the edge of crashing, but not enought to chash, I explain.
Doing manual and fixed OC on my 2600x, I've found that [email protected] was stable on Realbench OCCT, but sometimes playing I've had some crashes, specially on PUBG.
My RAM config was [email protected] as Ryzen DRAM calculator says, with 1.40 on dram and 1.025 on vsoc. Well, so running HCI was giving me 1 or 2 errors on 400-500%.
Tried rising vdimm and also vsoc until 1.5 on vdimm and 1.20v on vsoc, but same experience, my only way to not hving errors was going down to [email protected]

After some research and test I finally tried to go rise vcore to 1,3125 and errors where solved, and now running [email protected] with vdimm on 1.38 and vsoc on 1.00v.

So, in my experience try to add a little bit more of vcore if experiencing very few errors on HCI.
06-17-2019 08:03 AM
NightAntilli
Quote: Originally Posted by Keith Myers View Post
I'm not impressed. I beat most all those scores with my lowly 2700X and 3466Mhz CL14 RAM.

https://browser.geekbench.com/v4/cpu/12627947
Remember that the infinity fabric cuts its speed in half if the memory clock exceeds 3800 MHz.

06-16-2019 11:20 PM
hurricane28
Quote: Originally Posted by 1usmus View Post
194 are only a few weeks



to avoid conflicts with the new windows scheduler (1903) you will have to use AGESA Combo-AM4 1.0.0.1 or newer



AGESA Combo-AM4 1.0.0.1

Spoiler!


here are the results AGESA PinnaclePI 1.0.0.4
https://www.techpowerup.com/reviews/..._Guide/10.html
Good job man, looks like a lot of work.

Seems like 3466 MHz is the sweetspot for high CPU and RAM overclocks. Running this for months without problems.

Thnx for your hard work and keep it up.
06-16-2019 04:44 PM
Keith Myers
The new Linux 5.0 kernel is FAST

I have to keep reigning in my impulse to backport to the new Linux 5.0 kernel on my Ubuntu 18.04.2 LTS main daily driver partition. I have that in Disco Dingo on my development partition and it is FAST.
I see I am going to have to see what the Geekbench 4 scores are for my daily driver on that partition.
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