[SOLVED] RAM incompability? MSI H310M PRO VDH and HyperX DDR4 8GB 2400Hz

[Yegorov]

Hi, I´m having some issues with a new RAM I bought.
I already have (bought one year ago):
-Intel Core I3-8100
-MSI H310M PRO VDH
-Kingston HyperX DDR4 8GB 2400Hz (HX424C15FB2/8)

2 days ago I bought new Kingston HyperX DDR4 8GB 2400Hz and I´m now placing it, but i don´t recive any image from the monitor. I tried any possible combination, motherboard has 2 RAM sockets so i placed only the new RAM in both sockets and still no image.
I figured out that the new RAM has one number different than the old one, HX424C15FB3/8. It´s the only difference
CPU´s website specifies support to DDR4-2400 RAMs, up to 64GB (I couldn´t find a supported RAM list, if there is one).

Motherboard´s website does specify a supported RAM list (https://www.msi.com/Motherboard/support/H310M-PRO-VDH#support-mem-3), the old RAM is on that list (not exactly the same number, but HX424C15FB2K4/32), but not the new one (that finishes with 3/8)

I´ve just updated the BIOS from 1.20 to 1.90 and the problem persist.

Any help or I´m done?

(I speak spanish so if something isn´t clear I can try explain it in other way

 

[Karadjgne]

Reset your cmos/bios?

 

[Yegorov]

Reset your cmos/bios?

Already did that and nothing happens 🙁 Think I have nothing else to do, there is no compatibility

 

[Karadjgne]

Take one stick that works. Go into bios and bump the ram voltage up from 1.2v to 1.25v. Save, exit. Add the other ram. You've said it yourself, compatability and that's the issue.

Doesn't matter if both are Kingston, doesn't matter if both are the same or different models, that's just the heatsink and paint job. Remove those and what you get is 2 sticks of ram made up of silicon IC chips. That silicon is from different batches, has different impurities resulting in different Secondary and Tertiary timings. That's the cause of the incompatibility. Strip a heatsink off some Corsair ram, and they look the same. It's the IC's themselves that matter, not brand.

When mixing ram there's 3 results. Either they work, work with adjustments or they don't work at all. There's only one guarantee when mixing ram, there are No guarantees about anything. Could go either way.

So you need to make bios adjustments with one stick working to make global parameters for both. You may need ram voltage raising slightly, or memory controller, cpu OC, system agent, timings backed off, speeds lowered, could be a combination of any or all the above. Won't know until tried.

Worst case scenario nothing works so you'll need to swap the new ram for another stick, and possibly have to start all over. Or return the new stick, sell the old stick and buy a single kit containing all the ram you want.

 

[Yegorov]

Take one stick that works. Go into bios and bump the ram voltage up from 1.2v to 1.25v. Save, exit. Add the other ram. You've said it yourself, compatability and that's the issue.

Doesn't matter if both are Kingston, doesn't matter if both are the same or different models, that's just the heatsink and paint job. Remove those and what you get is 2 sticks of ram made up of silicon IC chips. That silicon is from different batches, has different impurities resulting in different Secondary and Tertiary timings. That's the cause of the incompatibility. Strip a heatsink off some Corsair ram, and they look the same. It's the IC's themselves that matter, not brand.

When mixing ram there's 3 results. Either they work, work with adjustments or they don't work at all. There's only one guarantee when mixing ram, there are No guarantees about anything. Could go either way.

So you need to make bios adjustments with one stick working to make global parameters for both. You may need ram voltage raising slightly, or memory controller, cpu OC, system agent, timings backed off, speeds lowered, could be a combination of any or all the above. Won't know until tried.

Worst case scenario nothing works so you'll need to swap the new ram for another stick, and possibly have to start all over. Or return the new stick, sell the old stick and buy a single kit containing all the ram you want.

Thanks for the reply! Will try raising voltage and see what happens, is there any risk for the old ram?

https://www.kingston.com/datasheets/HX424C15FB2_8.pdf
https://www.kingston.com/dataSheets/HX424C15FB3_8.pdf

Apparently they work at the same voltage

 

[Karadjgne]

No risk, they'll handle upto @ 1.6v but you don't want to be anywhere near there or it starts affecting the memory controller. Ideally ddr4 is 1.2-1.3v. 1.25v is common for other models.

There's honestly no real difference in those 2 models, the FB_2 and FB_3 just donates a different look to the heatsink.

 

[Calvin7]

You can play around and do the suggested.

Adding extra memory to existing memory have no guarantee to be compatible together.
Memory modules sold as Single Modules have no guarantee to work in any configuration other than as a Single Module.

 

[Yegorov]

No risk, they'll handle upto @ 1.6v but you don't want to be anywhere near there or it starts affecting the memory controller. Ideally ddr4 is 1.2-1.3v. 1.25v is common for other models.

There's honestly no real difference in those 2 models, the FB_2 and FB_3 just donates a different look to the heatsink.

Omg it´s working now, I raised from 1.2v to 1.25v and it´s working.

Thanks you, really thanks you!