Corsair Vengeance LPX 3000 CL16 overclock

[DaPoets]

Finally taking the time to tinker w/ my ram speeds. On my Z390 Gigabyte Master this board is fine for overclocking 4 sticks of ram per "Actually Hardcore Overclocking" and I have 64gb in there as 4x16. As this is my 1st time overclocking DDR4 I am having trouble finding exact info on max voltage for this. I did see a few times that 1.5v is the max for XMP certification which I would then guess means that's fine for 24/7 use, but does anyone else have thoughts? Also what would be the recommended max voltage for just short benching sessions and not for 24/7 use?

Right now I'm able to boot windows 10 and run all of my benchmarks w/ out fail at 3400 MHz 16-20-20-38 @ 1.48v

Stock on this is 3000 MHz 16-20-20-38 @ 1.36v and I have ran it at 3000 MHz 15-17-17-17-32 @ 1.36v

As cheap as this ram is I am actually impressed at the 3400 MHz capability.

So any direction / thoughts are appreciated.

 

[Woomack]

Would be easier if you could say what IC is under the heatsinks. Try Thaiphoon Burner. It should read memory chips (free version and read SPD button).

 

[DaPoets]

Would be easier if you could say what IC is under the heatsinks. Try Thaiphoon Burner. It should read memory chips (free version and read SPD button).

Not really sure what IC is, but here is a screen shot of what came up. Currently I'm running at 3200 MHz 16-20-20-38 @1.37v

 

[wingman99]

It is a C-die IC not good for overclocking. The B-die IC are usually good for overclocking. B-Die Finder LINK: https://benzhaomin.github.io/bdiefinder/



For benching 1.5v memory voltage and Vccsa 1.350v, Vccio 1.250 is fine.

 

[DaPoets]

It is a C-die IC not good for overclocking. The B-die IC are usually good for overclocking. B-Die Finder LINK: https://benzhaomin.github.io/bdiefinder/



For benching 1.5v memory voltage and Vccsa 1.350v, Vccio 1.250 is fine.

Thanks for that. As this ram is already doing the job for me I'm not about to go get all new B-die ram. Glad to hear my 1.5v theory was right. I didn't touch the Vccsa or Vccio yet.

What voltage is good on those for a 24/7 overclock?

 

[wingman99]

Thanks for that. As this ram is already doing the job for me I'm not about to go get all new B-die ram. Glad to hear my 1.5v theory was right. I didn't touch the Vccsa or Vccio yet.

What voltage is good on those for a 24/7 overclock?

1.45v for memory voltage and vccsa 1.250. Vccio 1.200v is safe for 24/7.

Vccsa (System Agent) stock Intel 1.050v, Vccio Stock Intel 0.950v.

 

[Woomack]

In Hynix it doesn't matter much if it's A, B, C ... die. All can OC similar, matter of luck. Typical new chips can make 3200 16-18-18, 3466 16-19-19, 3600 16/17-20-20 1.35-1.40V. 16GB modules OC a bit worse but I would still count on something like 3200 16-18-18.

 

[DaPoets]

In Hynix it doesn't matter much if it's A, B, C ... die. All can OC similar, matter of luck. Typical new chips can make 3200 16-18-18, 3466 16-19-19, 3600 16/17-20-20 1.35-1.40V. 16GB modules OC a bit worse but I would still count on something like 3200 16-18-18.

Thanks for those numbers. Yeah if this is Hynix I am impressed with it as it's been passing memtest with many different overclock settings I've thrown at it. I'm stable up to 3466 MHz 16-20-20-38 but at 1.5v so I've dialed it down to a nice balance of 3200 MHz 15-18-18-32 @ 1.37v. I figures there is no noticeable gain going from 3200 to 3466 so why add the added voltage. Plus when running a performance benchmark on my ram I'm getting consistently solid scores w/ my 3200mhz settings.

 

[Woomack]

On Intel not so much. On AMD you would see a higher performance at higher memory clock.

 

[trents]

What about M die compared to B die and C die for overclocking?

 

[Woomack]

If you mean Hynix then it's more matter of luck. Most new Hynix IC go up to 3600-3866. Actually the same with Micron. You can see 3466-3600 Hynix and Micron listed on various mobo QVL. Both at quite relaxed timings so in most cases it's easy to say it's not Samsung. Also die letter doesn't mean much. Popular M die or MFR was already in a couple of IC releases (also DDR3).
On Hynix it's possible to keep CL quite low but all other timings are rather relaxed. For example can make something like 3400 CL13-17-17 or 3600 CL13-18-18. Of course can play with sub timings as memory performance is not only based on 3-4 main timings.