[SOLVED] Overclock Corsair Vengeance LPX 3600Mhz (Special case)

[troyer1234567]

hi, i said special case in the title because my ram is Corsair Vengeance LPX 3600Mhz C18 but due to lack of support by CPU it works as 3200Mhz C18 !
my spec:
Cpu: ryzen 3400g
MB: Asus b450m-a
ram: Corsair Vengeance LPX 3600Mhz C18 2*8GB
gpu: no gpu
psu: green 330W
here is the timings of my ram after i enabled XMP profile:

i changed 5 timing settings in the BIOS:
tCL: from 18 to 16
tRCDWR: from 22 to 18
tRCDRD: from 22 to 18
tRP: from 22 to 18
tRAS: from 44 to 36

other things are on auto but DRAM voltage is 1.35 (first i enabled XMP profile then saved and restarted and then changed these 5 settings i said, other timings are on Auto)
then did export my ram specs using thaiphoon burner and imported to DRAM Calculator and here is what DRAM Calculator suggests:

i did exactly what these settings recommend but after restart when i opened TM5 (testmemory5) and started the test, after some seconds it showed me the sad face error (your computer ran into a problem and...") then i went to bios and changed everything to auto but the 5 settings i mentioned above, i set them ro recommendations by DRAM Calculator which were 14-18-19-19-38 but again received the sad face error 🙁
now u can see my settings in the picture above (it's 16-18-18-18-36 and other options are on auto), it is fine and stable, did an overnight test with TM5 and got no error. i'm so noob with overclocking. just want to know should i change anything to get better result or not?

another question, i don't have SoC Voltage option in bios, instead i have VDDCR SOC Voltage option which shows 1.2V and has two options: A. Auto B. Offset mode
in DRAM Calculator it says the recommended SoC Voltage is 0.975, i don't know if VDDCR SoC is exactly that SoC voltage or different and wonder if mine is too high or not ?! in another thread someone said as i use igpu , it's ok to set SoC voltage to 1.25 so if he's correct then 1.2 is fine and shouldn't change it, right? (note: in ZenTiming software, VSOC (SVI2) is about 1.1V)

thank u for your answers

 

[Koekieezz]

so shall i set my voltage to 1.4 and test C14? or it's dangerous?

no it's not. just max out at 1.41v for that chip. you could try 1.38 and 1.4 if you want. AFR usually scales with voltage at 1.4v for tCL and tCWL, try it yourself. you could use just tRFC at 560 for stability. also tRFC, 2, and 4, set all the same. i'll be waiting for your best results.

 

[troyer1234567]

no it's not. just max out at 1.41v for that chip. you could try 1.38 and 1.4 if you want. AFR usually scales with voltage at 1.4v for tCL and tCWL, try it yourself. you could use just tRFC at 560 for stability. also tRFC, 2, and 4, set all the same. i'll be waiting for your best results.

is this really AFR? TaiphoonBurner says it's hynix, i don't know how to find out what hynix it is

 

[Koekieezz]

is this really AFR? TaiphoonBurner says it's hynix, i don't know how to find out what hynix it is

if your corsair sticks are ver 5.30, 5.32 is CJR. 5.33 is DJR, 5.38 is JJR. DJR is like CJR, but does not walled by frequency (very good for OC), while CJR and JJR are mostly the same, difference are tRCDs is walled while on CJR tRP is walled.

 

[troyer1234567]

also make tRFC2 and tRFC4 the same as tRFC)

can you please explain to me why?
I've read that it should be like this:
tRFC 2 = tRFC / 1.346
tRFC 4 = tRFC 2 / 1.625

 

[Koekieezz]

can you please explain to me why?
I've read that it should be like this:
tRFC 2 = tRFC / 1.346
tRFC 4 = tRFC 2 / 1.625

the tRFC 2 and 4 are the trfc going to be used when it's powering down. since power down mode disabled, then make them all equals.

 

[troyer1234567]

the tRFC 2 and 4 are the trfc going to be used when it's powering down. since power down mode disabled, then make them all equals.

did everything as u said except for trfc2&4(will do them next time):

with this settings, after 3 cycles of Absolut config test, i got 2 errors , both of them were for test #15

edit: after restarting windows, i did another test , got no error after 3 cycles of Absolut config

 

[Koekieezz]

did everything as u said except for trfc2&4(will do them next time):

with this settings, after 3 cycles of Absolut config test, i got 2 errors , both of them were for test #15

edit: after restarting windows, i did another test , got no error after 3 cycles of Absolut config

make sure to do sfc /scannow and other method to recover from errors. sometimes windows is corrupted without you know it.

 

[troyer1234567]

make sure to do sfc /scannow and other method to recover from errors. sometimes windows is corrupted without you know it.

ok what's next?

 

[Koekieezz]

ok what's next?

well if any errors have been recovered then enjoy your time.

 

[troyer1234567]

well if any errors have been recovered then enjoy your time.

no more options to change? can't i get more freq? or tighter timing?

 

[Koekieezz]

no more options to change? can't i get more freq? or tighter timing?

you want more freq? go with 5600G.

 

[VACek]

Hello. I have 5 5600G in Asus TuF Gamming b450M Pro II, and i have 2x8gb corsair vengeance lpx 3600 cl18 (E-Die Micron)
Im overclock this ram to 4200mhz 20-23-23-45

 

[troyer1234567]

Hello. I have 5 5600G in Asus TuF Gamming b450M Pro II, and i have 2x8gb corsair vengeance lpx 3600 cl18 (E-Die Micron)
Im overclock this ram to 4200mhz 20-23-23-45

wow! nice! i wish i had the same apu as yours 🙁

 

[troyer1234567]

you want more freq? go with 5600G.

hi again
in here: https://forums.tomshardware.com/threads/3600-mhz-ram-works-at-3200-mhz-even-with-xmp-enabled.3754701

you told me this: "Update bios to bios Agesa 1.2.0.3 (dont go above it since it got bugs)"
it was when the latest Agesa ver was 1.2.0.6 , now the newest version is 1.2.0.7
should i update it or stick to my current 1.2.0.3?

 

[Karadjgne]

Read the notes. If it's just for ram compatibility and your pc is now working just fine as is, then updating to 1.2.0.7 will serve little purpose. Many of the 'ram compatibility' updates are simply to accommodate newly released ram that's at speeds not covered by older versions.

But if there's new media files, bug fixes, ram table tweaks etc then sure, go ahead and update, you can generally undo most updates and revert to a prior. Just make sure to have windows make a set point so there's something to revert to, make a copy of registry or even a full backup, just in case it goes South on ya.

 

[troyer1234567]

Read the notes. If it's just for ram compatibility and your pc is now working just fine as is, then updating to 1.2.0.7 will serve little purpose. Many of the 'ram compatibility' updates are simply to accommodate newly released ram that's at speeds not covered by older versions.

But if there's new media files, bug fixes, ram table tweaks etc then sure, go ahead and update, you can generally undo most updates and revert to a prior. Just make sure to have windows make a set point so there's something to revert to, make a copy of registry or even a full backup, just in case it goes South on ya.

ok look at this then:

I'm on ver 3211 rn, should i update it to 3802 or not?
note: i use win 11 pro, i don't know what does that fTPM stutter mean

 

[Koekieezz]

ok look at this then:

I'm on ver 3211 rn, should i update it to 3802 or not?
note: i use win 11 pro, i don't know what does that fTPM stutter mean

1.2.0.7 is fine, they fix the stutter in some games on a system that use fTPM.

probably will re do the ram test i mentioned before. since sometimes latest bios update could drop oc settings from the previous bios due to updated internals.

just save the OC profile to usb stick and load it again after updating the bios 😀

also dont forget to update chipset driver to ver 4.06 from amd web.

 

[troyer1234567]

1.2.0.7 is fine, they fix the stutter in some games on a system that use fTPM.

probably will re do the ram test i mentioned before. since sometimes latest bios update could drop oc settings from the previous bios due to updated internals.

just save the OC profile to usb stick and load it again after updating the bios 😀

also dont forget to update chipset driver to ver 4.06 from amd web.

thank you man
one question: can updating bios help me oc my ram to higher freq? i mean, should i start testing different values again to see if i get better oc with new bios?

 

[Karadjgne]

Unknown. Generally the Agesa updates only contain new info, like an old Agesa might contain info and tables for many models upto 3200MHz, but since 4000 didn't exist at the time, if you try and use 4000MHz ram on that bios, it'll error or fail to be recognised. Updating to a newer Agesa will have the info and tables for 4000MHz, so in that aspect an update will accomplish the goal.

But in some updates are bug-fixes and tweaks for certain ram, like with first gen Ryzen, Samsung B-die worked fantastic but the way SkHynix operates, it would rarely get over 2400MHz no matter what info or tweak. Corsair LPX uses SkHynix ram chips, so that was a major concern, Agesa fixed that with the compatibility updates.

So whether your ram will OC better is a toss up. An unknown. There's no saying exactly what's been tweaked in Agesa, what settings or compatibility has been added or adjusted. It might be easier, it might not. No way to tell unless you try, but the basic xmp speeds and profiles should work. OC is always a gamble, roll the dice on your chances.

Use Typhoon Burner to find your actual chipset, then start hunting down timings settings for that chipset, Buildzoid is usually good for that kind of info. (Actually Hardcore Overclocking).

Just remember that Ryzen has a 1900 Fclock cap basically, so any ram speed over 3800MHz will change from a 1:1 data transmission ratio to a 1:2 ratio, so 4000MHz will actually be slower with less performance than 3800MHz. Combining slightly higher speeds with tighter secondary timings will have way more benefits than just cranking the speeds and required voltages to the moon, regardless of the Primary timings settings.

Knowing Which timings to really adjust, and their working relationship to other timings is far more important than the actual number itself.

 

[Roland Of Gilead]

thank you man
one question: can updating bios help me oc my ram to higher freq? i mean, should i start testing different values again to see if i get better oc with new bios?

In this particular case, 1.2.0.7 does bring mem compatibility, but also pretty much stops any CPU OC's you may have had previously and hobbles the CPU, IMO. I don't know exactly what it changes, but my own chip which runs at 4.9ghz single/4.7ghz all core all day long, didn't work very well and kept crashing. After re-doing settings from scratch the best I could get was 4.7 single/4.5 all core. Reverted to previous bios and got my OC's back. I've never suffered with the stuttering issue per se, so can't say if 1.2.0.7 solves that.

 

[troyer1234567]

Unknown. Generally the Agesa updates only contain new info, like an old Agesa might contain info and tables for many models upto 3200MHz, but since 4000 didn't exist at the time, if you try and use 4000MHz ram on that bios, it'll error or fail to be recognised. Updating to a newer Agesa will have the info and tables for 4000MHz, so in that aspect an update will accomplish the goal.

But in some updates are bug-fixes and tweaks for certain ram, like with first gen Ryzen, Samsung B-die worked fantastic but the way SkHynix operates, it would rarely get over 2400MHz no matter what info or tweak. Corsair LPX uses SkHynix ram chips, so that was a major concern, Agesa fixed that with the compatibility updates.

So whether your ram will OC better is a toss up. An unknown. There's no saying exactly what's been tweaked in Agesa, what settings or compatibility has been added or adjusted. It might be easier, it might not. No way to tell unless you try, but the basic xmp speeds and profiles should work. OC is always a gamble, roll the dice on your chances.

Use Typhoon Burner to find your actual chipset, then start hunting down timings settings for that chipset, Buildzoid is usually good for that kind of info. (Actually Hardcore Overclocking).

Just remember that Ryzen has a 1900 Fclock cap basically, so any ram speed over 3800MHz will change from a 1:1 data transmission ratio to a 1:2 ratio, so 4000MHz will actually be slower with less performance than 3800MHz. Combining slightly higher speeds with tighter secondary timings will have way more benefits than just cranking the speeds and required voltages to the moon, regardless of the Primary timings settings.

Knowing Which timings to really adjust, and their working relationship to other timings is far more important than the actual number itself.

thank you so much bro

 

[troyer1234567]

In this particular case, 1.2.0.7 does bring mem compatibility, but also pretty much stops any CPU OC's you may have had previously and hobbles the CPU, IMO. I don't know exactly what it changes, but my own chip which runs at 4.9ghz single/4.7ghz all core all day long, didn't work very well and kept crashing. After re-doing settings from scratch the best I could get was 4.7 single/4.5 all core. Reverted to previous bios and got my OC's back. I've never suffered with the stuttering issue per se, so can't say if 1.2.0.7 solves that.

what does that Stuttering mean? what happens when pc Stutters? does it freeze or something?

 

[Roland Of Gilead]

what does that Stuttering mean? what happens when pc Stutters? does it freeze or something?

Yes, your screen freezes for a split second. Like it's stuttering along. Not a nice gaming experience.

 

[troyer1234567]

Yes, your screen freezes for a split second. Like it's stuttering along. Not a nice gaming experience.

never experienced that
so you say i shouldn't update my bios right?

 

[Roland Of Gilead]

never experienced that
so you say i shouldn't update my bios right?

Well, yes, if you are experiencing the stutters. If not, then see if the other fixes that have been provided work. Then you can decide if the bios update is needed.