Hey there, let's work through this together to figure out if your RAM is the real deal.

First, let's unpack the conflicting tool results—this is way more common than you might think:

• CPU-Z's readings are the most reliable here: It pulls data directly from the RAM's SPD (Serial Presence Detect) chip, which stores factory-set hardware info. Since Crucial is a subsidiary of Micron, seeing "Module Manuf. Crucial Technology" and "DRAM Manuf. Micron Technology" is 100% normal for genuine Crucial RAM.
• Why Memtest86/Crucial Scanner show "unknown": There are a few likely reasons:
  • Your RAM might be an OEM (original equipment manufacturer) variant sold through regional channels like your Vietnam store—OEM RAM often has stripped-back SPD info that isn't in every tool's database.
  • The versions of Memtest86 or Crucial Scanner you're using might be outdated, and haven't been updated to recognize newer DDR5 batch data.
  • Some laptop BIOSes restrict access to full SPD data, which can throw off third-party scanners.

Here are actionable steps to confirm authenticity:

• Inspect the physical RAM: Check for crisp, clean Crucial branding on the stick, smooth edges (no rough plastic burrs), and unscrambled, shiny gold contacts (new RAM should have zero wear). If it came in retail packaging, verify the holographic Crucial防伪标签—genuine ones have distinct, hard-to-replicate patterns.
• Update your tools: Grab the latest version of the Crucial System Scanner or Micron's official memory testing utility. Newer builds often add support for regional or OEM RAM SKUs that older versions miss.
• Run a full stability test: Let Memtest86 run continuously for at least 4 hours (overnight is better). If it completes without any errors, your RAM is performing as it should—counterfeit RAM almost always fails these stability checks with crashes or data errors.
• Verify your purchase channel: If you bought from an authorized Crucial/Micron retailer in Vietnam, that's a huge green flag. Even if it's a smaller shop, combining the CPU-Z data, stable test results, and clean physical condition means it's almost certainly genuine.

To wrap this up: The CPU-Z results are the key here—they confirm the RAM's core hardware matches genuine Crucial/Micron specs. The "unknown" labels from other tools are almost certainly tool compatibility issues, not signs of a fake. As long as the RAM passes stability tests and looks physically legitimate, you're good to go.

备注：内容来源于stack exchange，提问作者SoT