Why eth hashrate gets slower?

[Matias]

Hi!

Why ethereum hash rate has gotten slower over time? I’m not talking about increasing difficulty but cards’ decreasing hashrate.

[krakenmining]

Software related issue? Drivers, maybe?

[Merlig]

No decrease in Hashrate here... Just the damn difficulty

[smoolae]

Maybe growing DAG? When I mine other Ethash coins I get 31+Mh/s out of my R9 290s. With Ethereum I get around 28,5 Mh/s.

[Matias]

Maybe i’m wrong, but I’ve understood that cards nowadays don’t get the same hashrate as same cards few months ago? I know hashrate should stay the same and only difficulty increases.

[mettalmag]

I get the same hashrate on 480s what I was getting a year ago with just blockchain drivers

[QuintLeo]

The increase in DAG file size, in and of itself, means that you have to do more work for each "hash" on average - this will slowly reduce the hashrate of ANY card.

 So no, the hashrate WON'T stay the same - but it's a very slow decrease.