Question 4 Sticks of RAM how to make them work

[faint570]

Hi,

having trouble to run pc with 4 sticks of RAM (BSOD). Steps i've done: tested each ram stick with memtest86 in A1 slot, minimum 8passes, all were OK. Tested one stick every slot for minimum of 8passes, all OK. Tested two stick sets separately, all working fine. Mixed sets, tests were OK. When i just add third or all four stick, getting errors almost immediately. So figured that motherboard and RAM are ok. Thought maybe i was short on power, found out that my system uses ~433w, my psu is 530w. At the moment think i have to mess with maybe voltages in bios, but this is new area for me, and don't want to mess this up. Tried with auto, there was also XMP profile, but with that profile pc wouldn't event start with four sticks(works fine with two). According to my motherboard the only adjustment i made in bios was set RAM speed to 2133 for 4 sticks(with this setting pc starts at least)

Update, i've upgraded my bios from 1.5 to 3.2. Tried a short memtest, didn't get any errors for 5min (then canceled test, i'll try again over night) . But the windows couldn't start, got BSOD. Bios setting VPPM 2.550v ; VDDP 0.945v ; Chipset 1.072v ; DRAM 1.2v. So these are all on AUTO


CPU: AMD Ryzen 7 2700x
Motherboard: ASRock B450 Pro4
Ram: G.Skill Fortis F4-2400c16d (two sets of 2x8gb) (CL16-16-16-39 1.2v)
SSD/HDD: Samsung SSD EVO 120gb and 250GB, Seagate Barracude 7200 3TB, Western Digital WD5000AZRX 500GB
GPU: 1060 GTX 6GB
PSU: 530w thermaltake SP-530AH2NH
Chassis: FRACTAL DESIGN Define R5 Black
OS: Win 10 64bit

 

[sizzling]

This is the risk with mixing kits, even the same make and model they may have issues. You can try overvolting, underclocking and loosening the timings but it will be trial and error. This is why it’s recommended to buy your RAM as a single kit.

 

[faint570]

Thanks for reply, i know that, but this time it happened like this, i had 16gb and over time wanted to increase to 32, just got same model kit ( as these upgrdaes were successful for me in the past )

 

[Calvin7]

Memory manufacturers won't guarantee such combinations to be compatible together - two sets of 2x8gb.

You can do your own compatibility testing with no guarantees.

Such combinations often result in the memory no longer being able to operate at rated specifications.

Memory is guaranteed in the form sold. Other combinations you decide to make have no guarantee to be compatible together.

 

[adwinrahmadi]

are those RAM sets in the same specs?? my config is on different specs but in the same brand, and it is running fine, on an intel system

 

[USAFRet]

are those RAM sets in the same specs?? my config is on different specs but in the same brand, and it is running fine, on an intel system

The fact that yours works is in no way a guarantee that his will work.

There are 3 items to consider.
RAM set 1
RAM set 2
Motherboard

Yours are completely different than his.

 

[adwinrahmadi]

The fact that yours works is in no way a guarantee that his will work.

There are 3 items to consider.
RAM set 1
RAM set 2
Motherboard

Yours are completely different than his.

hmmm.. i assuming that his mobo is the same manufacturers as mine, i think the RAM could be the problem

 

[USAFRet]

hmmm.. i assuming that his mobo is the same manufacturers as mine, i think the RAM could be the problem

No, that's not it either.

You could take the exact same sets of parts...you have one set, I have one set.
Yours might work, mine might fail.

Ever so slightly different voltage tolerances, etc. Especially if they were bought at different times, or came out of different factories.

 

[hang-the-9]

Does the computer work with both pair of sticks on their own, both old and new pairs? Are you actually running into RAM maxing out in the system with 16 GB?