A newer PCI3 Gen 3 slot's higher bandwith would be useful for gaming only. A normal PCI1x slot has enough bandwidth already for mining. So it won't increase the card's ability to mine faster!
It's all about more slots being able to run more cards without needing additional MB,CPU and RAM. Lowering cost and quicker ROI. that's all
It's all about more slots being able to run more cards without needing additional MB,CPU and RAM. Lowering cost and quicker ROI. that's all
According to NiceHash, using a GEN 3 PCI-E lane can make a 1-2% difference in hash rate from the higher bandwidth, especially for some data transfer intensive algorithms.
Quote
We also checked with GPU-Z and all cards were successfully detected and linked with PCI-e v3.0, which is another bonus compared to other motherboards that usually work with 6+ cards only under PCI-e v1.1. The higher bandwidth speed may not look like an important factor, but the slower link can take 1-2% off of card's performance, especially in algorithms that are sending a lot of data from/to CPU/GPU.
https://www.nicehash.com/?p=news&id=155
For most algorithms I doubt it's actually a 1 to 2% difference, but it's probably not zero either.
