Use a single 8GB stick to substitute the defective stick from the 2x8GB package.
Use a single 8GB stick to substitute the defective stick from the 2x8GB package.
Certainly, if the specifications match, you should generally avoid problems.
Are you asking to swap an 8GB SSD with another 8GB SSD for a dual 8GB setup? Make sure both have identical latency, and any frequency differences can be handled. The IMC should sync all drives to the slowest one's speed.
Are you sure you want identical branding or skew? I noticed DDR3 can cause issues with mismatches.