Ram & Hashrates

[themonkii]

Built a rig with 2 x 4GB sticks of ram. Due to a mix-up, I needed to use one of those sticks. Yanked one, then fired up the rig and noticed the hashrate had dropped about 1.5Mh/s per card. Dual-mining, and it also dropped on the second coin.

I was under the impression that only 4GB was needed, but maybe that was for 6 cards, I'm using 8 gpus.

Can anyone confirm?