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9 Legend
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14.4K Posts
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June 3rd, 2025 01:08
Hynix DDR4 ram (oem) fails
got two Hynix sticks of 2133p and 2400T all 4 failed in Optiplex 7040. tried a samsung 2400T and that works. all the Hynix sticks are good in cosmetic appearance. this makes me hesitate to buy more Hynix oem ram?
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ejn63
10 Elder
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28.6K Posts
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June 3rd, 2025 10:52
The correct Hynix RAM should work -- but 2133 is too slow if 2400 is needed by the CPU, and 2400T uses a specific cache latency that the system likely does not support.
redxps630
9 Legend
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14.4K Posts
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June 3rd, 2025 21:08
actually Dell oem ram for 7040 is 2133. I used 2400 which is probably downclocked. Samsung 2400T works but the two Hynix 2400T do not. Perhaps just bad luck that all 4 bad rams are Hynix. I ordered some micron and will see if how it goes.