Help With BIOS Settings Installing New Ram

Cheers

Could I put the 8GB RAM card in with the 2 x 16GB and run it on the original default settings like I am now and would I get the same performance as before but with added RAM ?

Or am I just asking for trouble...

Anyway looks like I'm Win 11 to go so probably just eventually upgrade

Next computer will be free of Windows though I hope



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Ghot said:

It's always best to use a matched two-stick set of RAM.

Sell the Corsair stuff... or return it... and get the Crucial stuff I linked in post #18

Don't think a return is going to be possible now

It's hard not to know how to upgrade to Win 11 really as it won't stop telling me about it

Is it better to do it another way like a clean install?

Cheers Ghot
I'd give you a rep but I need to spread more around first

Just looking at the Tech Specs for the Corsair Vengeance LPX on their website and the SPD values seem to be in alignment with the default values I'm recording with CPU-Z - seems a bit strange to me that I can't remember what you said SPD stood for I'll have to scroll back
Also it says XMP Profile 2.0 which is what I was running it on before I think - where I kept experiencing glitches (black and white squares flashing up)
Should I be trying XMP 2.0 setting again with different values ? I seem to remember there were no options to change anything though..

VENGEANCE(R) LPX 32GB (2 x 16GB) DDR4 DRAM 3600MHz C16 Memory Kit - Black

In short, I think the problem is the processor_memory-controller specs (2667 MHz). It could also be this:

https://www.reddit.com/r/HPOmen/comm..._omen_25l_xmp/
( There is a bios update which allows you to use aftermarket ram at advertised speeds. Go to hp support page and type in your model and it will take you to the bios update download. Good luck to you )

Access Denied

I haven't read all the details of this thread, but the 2x16GB modules have 2 specs, one at 1.2V and other at 1.35V. Neither of the two fit too well for a high perfermance setup.

Problem (with the BIOS frequency nomenclature):
Core i5-10400F : wants 2667 MHz modules (1333 in CPU-Z)
modules: want either 2133 MHz (1067 in CPU-Z) at 1.2V, or 3600 MHz (1800 in CPU-Z) at 1.35V

Allow some few MHz imprecision in CPU-Z.

One solution would be using the modules at 1.2V and 2133 MHz but this would be infra-using them. The computer should gain memory peformance from using double channel anyway (unless the mobo cannot do double channel).

Overclocking the processor's memory controller from 2667 to 3600 is another possible option (with the modules at 1.35V), but it's a 35% o/c. If at all I'd try it in steps (first 2400, then 2666,...). But Idk if an XMP is flexible for this. If it were, my computers with DDR3 would tighten the latencies proportionally, 2/3 at 2400 for instance (18-22-22-42 -> 12-15-15-28), but again I'm not too sure about flexibility here.

(I'm calling "flexibility" to being able to use lower clocks and higher latencies ideally w/o bounds, except the BIOS setup menu itself that for instance - an extreme imaginary case- doesn't offer 500 MHz and 100 latency).

Cheers JLA - good find !
I'll have to peruse this thread further - and get myself up to speed so I understand the latter few sentences in your above technical explanation

So either a BIOS update could potentially allow my rig to be compatible with these cards
or
What you said above maybe that I'm not quite getting my head round yet

It was giving me 2667MHz before on the 8GB card but dropped down to 2133MHz with these new cards - I instantly noticed the graphics on some games went from shiny hyper realistic to a bit bland as well

Is it worth bothering with either or just selling and replacing? If anyone shows an interest in these for a good price it would probably be easier to just replace them with the Crucials - they seem to be going for a good price on Amazon just now

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Found these BIOS updates on the HP website but not sure if they apply my rig as there was no option going through the options for Windows 10 x64 22H2
Not sure about BIOS updates though this is all new under the hood stuff for me

I think you should research about the BIOS, I'm not used to branded computers and a BIOS to allow just "aftermarket modules" is a bit strange to me. With my aftermarket motherboards, BIOSes versions are numbered increasingly. From memory, one had F5, F6 and F7, and now F8n that is a beta BIOS that supports further processors than initially intended to say it so (this is or was more common with AMD afaik). Other has FA, FB, FC and FD, in theory the more modern the better although sometimes some users find that a newer version causes a problem. If it were my computer, I'd try to ascertain if my BIOS version allows "aftermarket modules" at all or more modules or less modules than others or what.

Latencies are numbers of cycles for certain memory operations (if it matters, "big" cycles, at the CPU-Z frequency to say it so, not at the BIOS frequency). If you set them too low, modules won't have enough time to do their necessary ops and the system won't boot or will have instability. The same as with clocks, it you set them too fast, the same will happen. 35% faster than in the spec is a lot, you normally do this in steps to find where is the limit. What Idk is how much can you underclock or loosen latencies. If "having enough time" were the only thing to consider, ANY lower clock with ANY higher latency would fit, but electronics is more complicated.

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I like the CP2K16G4DFRA32A modules for offering 3200 MHz at 1.2V, latencies are looser (22-22-22-52) but it doesn't count much (it has both XMP and JEDEC -"normal"- profiles with those specs). Several including Newegg's description say that they have profiles for 3000 and 2666 MHz, the latter would allow using it for the i5-10400F w/o overclocking the processor's memory controller. The 2666 MHz profile should be selected automaticly (at least with the aftermarket motherboards criteria I'm used to). I haven't been able to see their 2666 MHz profile, but proportionally it would have 5/6 times the latencies at 3200 (possibly 18-18-18-43).