16GB Installed RAM, But 8GB Usable.

Apr 27, 2018
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I Recently bought new RAM sticks! so now I have 4x4GB RAM! but it only says 7,98GB Usable! Help!
Here's a pic of the specs:
6lpGvX4B6ExZjoESLsGbSb2xoHBrjxO-LiunW3TMj8MQ4187vKjm3hjXLomA5G3OWZrIsCF04Cmu6FBOUS93bosyoV1_-vCDUzox9ma2-rr2jonH8Go3cJKMthSX2Htqvg-rDAvsODjQ2KznWQR5kymfLWNQYiC-DsOiTFu9zdWCScEbb58VRDtlC-iYZFxuZ98_p3O58Uv8KtmEWbWm0Cq5d9Onmn8SLM4PHl89XiZavV8ttK-LnwFV5Waur97uShr7eXJUB9EvXcvNuu_oxC4HiozdUm9iRYjGldwYJL78mHqB4WmpZoxUREdw5u9UWwPAfmmR2o68m1USsZQ6MTrT5CSA3aVyT7iIPD0QCR5KjtswSpSqGdMmByBqv82GMVKVW9OlZVsFJgrhx_ZgrEuO_ISHxV6mxmXwU7Hdlt15pKRFUKfIxRF_Rjk_waUoeBkb3XPNFPKEBth7BxCO0ddLsKQg9Rm9sV-tXNJCuIetoCMepMa0hZ8qhBEmedR30QsKcdUHXAAXcAC_MGEOyyMiC4OI0KnhMMuhKmhHREmcxHfnENBloNyTicu9pmO1BO_1luJ7F7ZjB5zEko3ua5c4Qr54d8AaJdwsqsw=w1662-h900-no

As you see!
 

schaft

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Jan 24, 2012
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1. Check the bios, you might have turn off its auto adjust due to your previous personalized setting for the old ram, which not compatible with the new ram. Turn it back into auto for a while (clock, voltage or CL setting)
2. Do try using only the new ram, to make sure its compatible with the motherboard and working. (I know it was detected, but just in case "does it really working")
If it does not help, then the new ram might not compatible with the old ram.
 
Memory should *always* be purchased in kit form of pairs in one package together (2x, 4x, 6x, 8x). There are many reasons for this, but the most common necessity is that memory vendors may use different memory modules for their RAM sticks from production cycle to production cycle. So for example Corsair uses both Samsung and Micron memory. Even on the same model memory, they may one month switch to Micron due to a Samsung NAND memory chip shortage or vice-versa.

Now that doesn't mean same memory models that are not sold in kit form won't work together, but it's not guaranteed. Kit form memory are made next to each other on the same production cycle and are tested at the factory to work with each other prior to being packaged. I strongly suspect that's your issue.

PS: when posting questions for help here, always post your computers full system make and model specs (motherboard, CPU, memory, etc.).
 
Apr 27, 2018
4
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10

I lent back the old ram I was talking about! Hopefully I will get the 2x8GB to work better :/