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Memory Module
1.【DRAM】Why won’t my PC boot after I installed RAM? Why is it beeping?+
This usually means the RAM isn't seated properly or is incompatible. Try these steps:
- Reinstall the RAM: Power off, unplug, and firmly reseat the RAM until the clips click.
- Test one stick at a time: Check each stick individually to find a faulty one.
- Check compatibility: Make sure the RAM type and speed match your motherboard.
- Clear CMOS: Reset BIOS by removing the battery for 1 minute, then reinstall.
- Update BIOS: Visit your motherboard brand’s website for the latest update.
2.【DRAM】Why is only 8GB of my 16GB RAM usable?+
📍Check what’s detected
-
Press
Ctrl + Shift + Esc→ go to Performance > Memory → compare “Installed” and “Available” RAM.
📍Common causes
-
Shared with graphics: If you don’t have a GPU, 1–2GB may be used by integrated graphics.
-
Outdated BIOS: Update from your motherboard brand’s website.
-
Windows limit: Type
msconfig→ Boot > Advanced Options → uncheck “Maximum memory.” -
Motherboard limit: Check your board’s max RAM per slot and total support.
-
Loose or faulty RAM: Reseat and test one stick at a time.
3.【DRAM】Why is my RAM not running at standard speed ?+
The speed shown on the packaging represents the maximum frequency the memory can achieve on a compatible standard test platform.
In everyday use, the actual speed may vary due to factors such as the motherboard, processor, and system settings.
4.【DRAM】Can I mix DDR3, DDR4, and DDR5 RAM?+
No. Each type of RAM (DDR3, DDR4, DDR5) has different pin layouts and notch positions. They’re not physically compatible.
- Mixing types is not possible.
- For safety, never force RAM into the wrong slot—it can damage your motherboard or RAM.
⚠️Check compatibility: Search your device model online to see what RAM it supports.
5.【DRAM】How do I install RAM correctly? (RAM installation guide)+
【1】Shut down and unplug the power: This prevents static damage.
【2】Line up the notch: RAM sticks have a notch—make sure it aligns with the slot.
【3】Press down firmly: Push straight down until both side clips snap into place.
【4】Don’t touch the gold contacts: These are called “gold fingers.” Keep them clean. Use an eraser to gently clean if dirty.
6.【DRAM】Can I use RAM from different brands or sizes together?+
Technically yes, but it’s not recommended.
- Mismatched RAM may cause crashes, slower performance, or failure to boot.
- For best stability, use the same brand, size, and speed in all slots.
7.【DRAM】What is RAM CL or CAS Latency? Is a lower number better?+
CL (CAS Latency) = the delay between your CPU asking for data and the RAM delivering it.
- A lower CL is better, but only when paired with a high MHz speed.
- Performance depends on both speed and latency.
8.【DRAM】What is dual-channel RAM? How do I enable it?+
Dual-channel lets two RAM sticks work together for faster performance.
To enable it:
- Use two identical sticks (same size, speed, brand is best)
- Install them in the correct slots (usually color-coded on your motherboard)
9.【DRAM】What are RAM “gold fingers”?+
“Gold fingers” are the shiny contact pins at the bottom of your RAM stick.
They connect your RAM to the motherboard for power and data transfer.
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⚠️ Tips:
- Avoid touching them—oil and static can cause problems.
- Clean gently with an eraser if they look dirty or oxidized.
- Damaged pins may cause boot failure.
10.【DRAM】How do I check if my RAM is bad?+
Use these tools to test RAM:
- Windows Memory Diagnostic (built-in)
- Search “Windows Memory Diagnostic” in Start → click “Restart now and check for problems”
MemTest86 (advanced)
- Download from https://www.memtest86.com/
- Create a bootable USB drive ➡︎ run a full test
⚠️ Tip: Test one RAM stick at a time to isolate issues more easily.