3 ms·
I'm not an expert, but my understanding of it is that DRAM is mostly just banks of capacitors with some transistors to control when they get recharged or draine
by elihu 6y ago
I'm not an expert, but my understanding of it is that DRAM is mostly just banks of capacitors with some transistors to control when they get recharged or drained. Making capacitors smaller is problematic, because it would decrease the capacitance and require more frequent updates to prevent data loss. So, DRAM doesn't really benefit as much from process shrinks as CPUs do. DRAM does get better and cheaper over time, but the physical constraints on the problem are different.
- klodolph 6y agoA DRAM cell is a single capacitor and single transistor. DRAM benefits from process shrinking because smaller transistors require less charge to switch. The way DRAM is read is by dumping the charge into a transistor’s gate capacitor. Yes, you also have to deal with leakage current and stray capacitance and the like.