[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]

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

That's why i personally dont use Dram calculator. You could just try to enable xmp and use 3466mhz. and if you want to tighten it, CL 16-19-19-19-36 are usually the best you could get. AFR sucks at overclocking, espescially at timings.

 

[troyer1234567]

That's why i personally dont use Dram calculator. You could just try to enable xmp and use 3466mhz. and if you want to tighten it, CL 16-19-19-19-36 are usually the best you could get. AFR sucks at overclocking, espescially at timings.

hi, i tested freqs and timings, now it's stable with 1.35 Dram Voltage, 3400Mhz freq, 16-19-19-35 , is it good?

 

[Koekieezz]

hi, i tested freqs and timings, now it's stable with 1.35 Dram Voltage, 3400Mhz freq, 16-19-19-35 , is it good?

Pretty much okay if you did tested it with absolut config. what are the final results? prolly share the zentimings here

 

[troyer1234567]

Pretty much okay if you did tested it with absolut config. what are the final results? prolly share the zentimings here

yes i have tested it with tm5 and absolut config and got no error. here is zentiming:

should i change anything to get better performance (specially at games)?

 

[Koekieezz]

yes i have tested it with tm5 and absolut config and got no error. here is zentiming:

should i change anything to get better performance (specially at games)?

Probably bump the Dram voltage to 1.36 or 1.37 volts, then set:
tRRDS: 4
tRRDL: 4~8
tFAW: 16
tWTRS: 4, but could stay 5 (test it first)
tWTRL: could go as low as 8. set it at 12 first.
tWR: 22 or 16
tWRRD: 2

these are the only timings you could adjust for better read/write performance. the lower it goes and stable, the better performance it would give. i wonder if 1.36/1.37 could do 3466mhz CL16 with tight timings.

 

[Karadjgne]

A word about Dram Calculator (yes, I use it on my pc). It's not Gospel or a magic one button fix, or a cure all for the woes of slow silicon. It's a guess. It's a report by a very very talented and knowledgeable person on what could be used and what has successfully been used on that particular model ram. But your ram isn't theirs, or anyone else's, so take the results with a grain of salt.

The way to use Dram Calculator successfully is to do it in stages. As you started to do but didn't finish. I'd personally use your motherboard bios profiles, use 1 as a factory default. Use 2 as a saved working sample. Use 3 as a test. You'll boot to 1. Change a couple of values. Save to 3. Reboot. If it's good, save to 2, change a couple or 3 more values, save to 3 reboot. And so forth. If it fails, reboot from 2, skip those 3 values and continue, save to 3 and reboot.... rinse and repeat.

By the time you get done, there'll be 3 or 6 etc values not changed, then you can change 1 by 1, maybe change to a slightly higher number than suggested. That'll dial in the ram. Takes time. It's not a simple One Click solution, which is how ppl perceive it should be and complain that it's useless.

When all done, you'll have increased ram performance, increased cpu performance and a saved bios profile in #2 that doesn't get wiped with bios upgrades or reset cmos. Just point the boot to load #2 profile.

 

[troyer1234567]

Probably bump the Dram voltage to 1.36 or 1.37 volts, then set:
tRRDS: 4
tRRDL: 4~8
tFAW: 16
tWTRS: 4, but could stay 5 (test it first)
tWTRL: could go as low as 8. set it at 12 first.
tWR: 22 or 16
tWRRD: 2

these are the only timings you could adjust for better read/write performance. the lower it goes and stable, the better performance it would give. i wonder if 1.36/1.37 could do 3466mhz CL16 with tight timings.

wouldn't 1.36 or 1.37V of dram hurt my pc?

 

[Koekieezz]

wouldn't 1.36 or 1.37V of dram hurt my pc?

it wont. everything below 1.4v on that chips is fine. i ran my chip on 3600 CL16 (Hynix CJR)1.376v daily and it's not even hot.

 

[troyer1234567]

how do you check ram temp?

it wont. everything below 1.4v on that chips is fine. i ran my chip on 3600 CL16 (Hynix CJR)1.376v daily and it's not even hot.

 

[Koekieezz]

how do you check ram temp?

Manually using the digital thermometer i have, left unused since my father bought it to check temps XD

 

[troyer1234567]

Manually using the digital thermometer i have, left unused since my father bought it to check temps XD

oops, i don't have thermometer

 

[troyer1234567]

Probably bump the Dram voltage to 1.36 or 1.37 volts, then set:
tRRDS: 4
tRRDL: 4~8
tFAW: 16
tWTRS: 4, but could stay 5 (test it first)
tWTRL: could go as low as 8. set it at 12 first.
tWR: 22 or 16
tWRRD: 2

these are the only timings you could adjust for better read/write performance. the lower it goes and stable, the better performance it would give. i wonder if 1.36/1.37 could do 3466mhz CL16 with tight timings.

set voltage to 1.37, 3466mhz no error with TestMem5, but timing was 20-24-24-46, should i decrease the voltage to 1.36 or tighten the timing with 1.37v?

 

[troyer1234567]

ok, left the voltage at 1.37v, freq at 3466 MHz
timing is: 16-19-19-35
i will post a screenshot of Zentiming tomorrow as I've changed some others like tRC from 75 to 54

 

[Karadjgne]

DDR4 afaik doesn't have a voltage ceiling as such. Intel, however, has spec'd DDR4 maximum voltage of 1.5v for XMP2 (basically extreme speeds). Also some kits are not a standard 1.35v for XMP settings and can be upto 1.45v is the highest I've seen.

For every day usage, anything 1.35v - 1.40v is fine,

XMP settings are generic. You'll get the exact same XMP setting on every single stick of that particular model. However, ram is unique, each stick being made up from several silicon chiplets, all of which have microscopic differences in impurities and quality. So when applying a generic boost to unique ram, there's going to be occasions when that isn't enough, and the ram might need 1.375v instead or golden sticks where the ram might OC and only require 1.275v.

Think Bell curve, 90% being XMP friendly, but 5% in either direction needing tweeks.

 

[Koekieezz]

ok, left the voltage at 1.37v, freq at 3466 MHz
timing is: 16-19-19-35
i will post a screenshot of Zentiming tomorrow as I've changed some others like tRC from 75 to 54

Yup, post zentimings read here and aida64 memory benchmark here ill be waiting for it. Make sure it's stable using Absolut Config and got no errors. ALSO on amd, tRCDWR COULD be lower, test it yourself on the best lowest timings with the current voltage. Here is my testing and results on intel platform with CJR 3600 C16 + tight subtimings 1.37v:

DDR4 afaik doesn't have a voltage ceiling as such. Intel, however, has spec'd DDR4 maximum voltage of 1.5v for XMP2 (basically extreme speeds). Also some kits are not a standard 1.35v for XMP settings and can be upto 1.45v is the highest I've seen.

For every day usage, anything 1.35v - 1.40v is fine,

XMP settings are generic. You'll get the exact same XMP setting on every single stick of that particular model. However, ram is unique, each stick being made up from several silicon chiplets, all of which have microscopic differences in impurities and quality. So when applying a generic boost to unique ram, there's going to be occasions when that isn't enough, and the ram might need 1.375v instead or golden sticks where the ram might OC and only require 1.275v.

Think Bell curve, 90% being XMP friendly, but 5% in either direction needing tweeks.

Except for bad ICs for overclocking such as Samsung C Die, it is better to stay 1.36v and below or it will degrade. Hynix 8Gbit MFR and Micron 8Gbit other than Rev E and 16gbit rev b and e has such a bad voltage scaling (negative scaling). As for intel, it always depends on the VCCSA/IO, as long as it's not above 1.25v daily, it should be oke. for amd the SOC voltage shouldn't exceed 1.2v (on apus 1.2v daily is fine since they're different architecture, the 4700S even daily at 1.3v but that's different case). For Hynix AFR as the OP have, voltage scaling above 1.4 does not have any improvement, so 1.38 max should be the sweetspot for it. if it's binned for 3600 C18, 3466 C16 shouldn't be hard to achieve. but if it were hynix cjr/djr, 3466 C14 should be attainable with 1.4v or even below it (above 1.35 range).

 

[troyer1234567]

Probably bump the Dram voltage to 1.36 or 1.37 volts, then set:
tRRDS: 4
tRRDL: 4~8
tFAW: 16
tWTRS: 4, but could stay 5 (test it first)
tWTRL: could go as low as 8. set it at 12 first.
tWR: 22 or 16
tWRRD: 2

everything u said worked except for tWTRL, system didn't post when i set that to 8 but 9 is fine:

what's next?

 

[Koekieezz]

everything u said worked except for tWTRL, system didn't post when i set that to 8 but 9 is fine:

what's next?

I would say the RRDS and RRDL are pretty tight, if WTRL cant do below 9, then it's your limit. i would like to say try to lower ProcODT at 53.3 to as low as 43.6, then push tRFC as low as you could (maybe start at 560, and max out at 480 if it even boots) also make tRFC2 and tRFC4 the same as tRFC, set tCKE at 1 if it boots, then Disable Power Down Mode (is a must if you didnt yet). tCWL could be as low as tCWL - 2 (which means 14 with current tCWL) even if its booting. tRTP could be as tight as 8, and tWR could be as low as 12 (or 10), all of this is just my prediction, wont work as flaw as what i tought. But seeing the RRDS/L at 4/4 and WTRS/L at 4/9 is pretty good to my eyes (it's an AFR Dude!). My CJR cant do RRDS/L at 4/4, you could see my timings i gave up above.

The point is, tighten ProcODT, tRFC's, tCKE, tCWL, tRTP, and tWR. i would say try the lowest value first, and if it's not stable or not even booting, add one tick above my recommendations, Goodluck with that. I Understand it's time consuming since the test take up to 1hr and 30mins usually (yes, anta777 absolut config is heavier than extreme1 config, but faster).

And if every timings worked as expected, stable for 3 cycles on tm5 with absolut config (you must confirm this, since ram stability is the most matters thing here), then congrats, you have a pretty ok 3466 at those timings. Don't forget to post aida64 memory benchmark results here (with all bg apps closed, and opened to compare the latency differences).

Also here, install the latest chipset driver from amd web, it got some improvements (latest chipset driver from amd + bios with agesa 1.2.0.3 is pretty sweetspot now, wait till agesa 1.2.0.7 bring improvements XD). Next thing you want to do is to OC the igpu, and the cpu. but im not specialist on amd overclocking, so better seek out here or at r/overclocking.

 

[troyer1234567]

I would say the RRDS and RRDL are pretty tight, if WTRL cant do below 9, then it's your limit. i would like to say try to lower ProcODT at 53.3 to as low as 43.6, then push tRFC as low as you could (maybe start at 560, and max out at 480 if it even boots) also make tRFC2 and tRFC4 the same as tRFC, set tCKE at 1 if it boots, then Disable Power Down Mode (is a must if you didnt yet). tCWL could be as low as tCWL - 2 (which means 14 with current tCWL) even if its booting. tRTP could be as tight as 8, and tWR could be as low as 12 (or 10), all of this is just my prediction, wont work as flaw as what i tought. But seeing the RRDS/L at 4/4 and WTRS/L at 4/9 is pretty good to my eyes (it's an AFR Dude!). My CJR cant do RRDS/L at 4/4, you could see my timings i gave up above.

The point is, tighten ProcODT, tRFC's, tCKE, tCWL, tRTP, and tWR. i would say try the lowest value first, and if it's not stable or not even booting, add one tick above my recommendations, Goodluck with that. I Understand it's time consuming since the test take up to 1hr and 30mins usually (yes, anta777 absolut config is heavier than extreme1 config, but faster).

And if every timings worked as expected, stable for 3 cycles on tm5 with absolut config (you must confirm this, since ram stability is the most matters thing here), then congrats, you have a pretty ok 3466 at those timings. Don't forget to post aida64 memory benchmark results here (with all bg apps closed, and opened to compare the latency differences).

Also here, install the latest chipset driver from amd web, it got some improvements (latest chipset driver from amd + bios with agesa 1.2.0.3 is pretty sweetspot now, wait till agesa 1.2.0.7 bring improvements XD). Next thing you want to do is to OC the igpu, and the cpu. but im not specialist on amd overclocking, so better seek out here or at r/overclocking.

what is ProcODT? what does it do?

can you please sort them in order of priority? then i will try to get the tightest of them in order of priority

 

[Koekieezz]

what is ProcODT? what does it do?

can you please sort them in order of priority? then i will try to get the tightest of them in order of priority

ProcODT is the on die termination, it usually does reduce the signal noise and interference on ram pcb trace to cpu/imc. Too high and the signal is absorbed, too low and the noise is interfering.

In Order

• ProcODT: 53.3 to as low as 43.6
• tRFC: as low as you could (maybe start at 560, and max out at 480 if it even boots also make tRFC2 and tRFC4 the same as tRFC)
• tCKE:1, if it boots
• tCWL: could be as low as tCWL - 2 (which means 14 with current tCWL) even if its booting.
• tRTP: could be as tight as 8, or try 10~12
• tWR: could be as low as 12 (or 10, even if it boots and stable on stress testing)
• Power Down Mode: Disabled

then install the latest chipset driver from here. Make sure you do 3 cycles of Absolut config using TM5, and post aida64 memory benchmark results here (with all bg apps closed, and opened to compare the latency differences).

 

[troyer1234567]

ProcODT is the on die termination, it usually does reduce the signal noise and interference on ram pcb trace to cpu/imc. Too high and the signal is absorbed, too low and the noise is interfering.

In Order

• ProcODT: 53.3 to as low as 43.6
• tRFC: as low as you could (maybe start at 560, and max out at 480 if it even boots also make tRFC2 and tRFC4 the same as tRFC)
• tCKE:1, if it boots
• tCWL: could be as low as tCWL - 2 (which means 14 with current tCWL) even if its booting.
• tRTP: could be as tight as 8, or try 10~12
• tWR: could be as low as 12 (or 10, even if it boots and stable on stress testing)
• Power Down Mode: Disabled

then install the latest chipset driver from here. Make sure you do 3 cycles of Absolut config using TM5, and post aida64 memory benchmark results here (with all bg apps closed, and opened to compare the latency differences).

i did tRFC first, it's 490, can't go lower as it doesn't post, should i change trfc2 and trfc4 to 490 either?

set procodt to 43.6 ohm and it's fine

 

[Koekieezz]

i did tRFC first, it's 490, can't go lower as it doesn't post, should i change trfc2 and trfc4 to 490 either?

set procodt to 43.6 ohm and it's fine

yeah, you'd be better to report after you find the max absolute low and stablest even after doing TM5 with absolut config, not just TM5.

 

[troyer1234567]

yeah, you'd be better to report after you find the max absolute low and stablest even after doing TM5 with absolut config, not just TM5.

everything set as u said (the lowest numbers) , system did post well now I'm going to do TestMem5 with absolut config

 

[troyer1234567]

yeah, you'd be better to report after you find the max absolute low and stablest even after doing TM5 with absolut config, not just TM5.

setting all tRFCs to 490 caused error in tm5, i have to increase it, after setting it to auto, found out that the ProcODT 43.6 was the problem, increasing it to 48 ohm made it stable , now i have to test tRFC

 

[troyer1234567]

but if it were hynix cjr/djr, 3466 C14 should be attainable with 1.4v or even below it (above 1.35 range

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