Litecoin & system RAM

[bitcoinnix]

So the info page for LiteCoin says:

Litecoin uses scrypt as a proof-of-work scheme. Scrypt adds memory-intensive algorithms to reduce the efficiency of the kind of parallelization that GPUs offered in early Bitcoin mining. This led to Litecoin primarily being mined with CPUs at the beginning. Later CPU-based mining was largely replaced by more energy-efficient GPU-based mining, currently the dominant Litecoin mining technology.

Does this mean that system memory (size?  speed?) used to be a large factor but has now been minimized, or is it still a factor in mining? 

I've got 2 decent GPUs coming, but currently only run 16GB of RAM.  Do I need to think about this as a bottleneck?  I can go out to 32GB for another $100

[KWH]

So the info page for LiteCoin says:

Litecoin uses scrypt as a proof-of-work scheme. Scrypt adds memory-intensive algorithms to reduce the efficiency of the kind of parallelization that GPUs offered in early Bitcoin mining. This led to Litecoin primarily being mined with CPUs at the beginning. Later CPU-based mining was largely replaced by more energy-efficient GPU-based mining, currently the dominant Litecoin mining technology.

Does this mean that system memory (size?  speed?) used to be a large factor but has now been minimized, or is it still a factor in mining? 

I've got 2 decent GPUs coming, but currently only run 16GB of RAM.  Do I need to think about this as a bottleneck?  I can go out to 32GB for another $100

2 GB works fine.