slight difference ra ang voltage drop ani cguro kay gamay raman ang na add na resistance tungod sa wire, considering na mubo ra iya length nya high quality siya with gold plated connectors etc.
wires have resistances nya naka series connection na siya from psu to your hardware mo naog ang voltage ana. pero its neglegible raman cguro or if you want to make sure calculate ka sa voltage drop niya if naa na ang extended cord.