There's the 't' series of instances that offer burstable CPU. AFAIK still 1:1 on memory though, and there's models that allow you to pay to stay un-throttled wh

There's the 't' series of instances that offer burstable CPU. AFAIK still 1:1 on memory though, and there's models that allow you to pay to stay un-throttled when using t family instances vs. getting throttled when out of burst credits.