I have an HP Pavilion 15Z e000 x64 with Windows 8.
It shows that I'm using less ram after the upgrade than before. The BIOS is hardware reserving 9.8gbs
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Your Pavilion 15z-e000 Series System Specs
Memory Type: DDR3 PC3-12800, DDR3 PC3-14900, DDR3 (non-ECC) Maximum Memory: 8GB Slots: 2
Generally, the maximum size for each slot is the maximum ram divided by the number of slots (in this case 4GB). Since you've purchased
12GB of ram for
2 slots, I'm going to guess one of those is a
8GB module. You can't use an
8GB module in a slot that only supports up to
I was under the impression that most computers will just disregard the rest of the ram within the module, so that it's still compatible. But unfortunately, that doesn't seem to be the case with your computer. I would suggest returning the ram to the store you bought it at (ASAP) and purchasing a
4GB module instead.
Next time you purchase ram, keep in mind that the memory you buy is determined by:
x64CPUs support the same amount of ram, even though they mostly support
x64CPUs, you may only be able to have, ie,
8GBon your motherboard (this, more specifically, is a limitation of the memory manager and number of slots on your MOBO). Your motherboard also determines how fast the RAM can run (but this isn't suppose to affect compatibility).
32bversions of almost every operating system, and it doesn't just mean
inifnite GB. Look up your OS and find out how much ram you can add (
32bversions of Windows will actually be limited to