Find compatible ram

[tomas16]

Hello, i currently have 2x2gb DDR3 PC3-12800 non ecc unbuffered memory, That workshop just fine in my computer. When i bought Kingston DDR3 1333mhz 4gb PC3-10600single Channel ram, Its not Working even alone in the PC .
could it be because of the PC3-xxxxx ?

 

[tomas16]

Works*

 

[bigpinkdragon286]

The best advice you're going to get from the forums here is, never mix RAM, and that's precisely what you're trying to do. Always buy RAM in kits that include all of the modules you plan to use.

Despite that advice, sometimes it works fine so, here's a few troubleshooting steps:

The settings for your working RAM modules may be either automatically or manually set. If the settings are automatically set, nothing should need be changed in BIOS for the new RAM module to be detected and configured on the next system boot, however some motherboards have particular slots that a single module should be installed into for best results. Look in the manual to see which RAM slot is recommended when using a single module.

If your old RAM module settings were manually set in BIOS, you will first need to boot with a working RAM module installed and undo the settings in the BIOS to allow the new module to work.

Ultimately, since you bought a new module that is clearly not matched with the first two either in speed or capacity, if you can even get the modules to work together at all, you're going to have to compromise on the module speed and run at the lowest common denominator. The old modules should be happy up to 1600 MT/s for speed (800 MHz) but the new module is rated only up to 1333 MT/s (667 MHz.)

Also, in case there was any question, never work with RAM modules when a computer system's power supply is on, or before the power supply's reserve hold-up capacitance has been drained. For users that don't know what this means, make sure the power supply, if it has a physical switch, is switched to the 0, or off position. The switch will be near where the power cord plugs into the power supply (if the power supply has a switch.) After you have switched off your power supply, unplug it. After unplugging the power supply, wait another 30 - 60 seconds before working inside the PC. Not following these steps could result in damage to the PC or the memory modules.