![]() Firstly, each module has different pin numbers (DDR4 with 288 pins and DDR3/DDR2 with 240 pins )and different notch positions, so they can be installed in repective socket only. No, DDR4 and DDR3 are not backward compatible with DDR2 and DDR1 for the following reasons. If possible, please try to install the suspected memory module on another laptop/desktop to check if the problem is related to the motherboard.Īre DDR4 and DDR3 backward compatible with DDR2 and DDR1? We recommend that you install the suspected memory module separately to check if the problem is related to the memory module or the compatibility.Ĥ. Please make sure the memory modules are installed properly by referring to the official user manual.ģ. Use the compatability tool on the Silicon Power website at recommend that you update the system's BIOS, to resolve this issue. Another possibility is that the BIOS on the system cannot interpret the density of the memory chips. Please confirm this computer can support the maximum memory capacity you installed.Ģ. Why does my computer only recognize half the DRAM capacity?ġ.
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