Join Date: Aug 2011
Location: Within the Milky Way
I'd take 12.5v over 11.5v. Some units go slightly over 12v so that it can accommodate for voltage droop under load. For example, a power supply may read 12v in the bios, but under load that voltage might drop to 11.8v. So, having a slightly higher 12v will mitigate that. Running it higher also helps a bit with efficiency and is a trick you can use to get a higher 80+ cert.
Regardless, both extremes are within spec, so I would only worry about voltage regulation when it's outside of +/- 5% or if the fluctuation swings are too wide or frequent. FYI, EVGA will deem a unit defective if it fluctuates more than 0.05v (any voltage), if it fluctuates rapidly (any voltage), or if 12v is outside 11.4-12.6v.
1680 V2 4.5GHz 1.33v | G.Skill Trident X 4X4GB 2400MHz | R4BE | Titan Xp + Morpheus II
Wasabi Mango UHD550 | Rosewill Rise | Thermalright LGM RT
Logitech G600 | G440 | Tt Meka G-Unit Cherry MX Black+Double O-Rings
JBL LSR308s | Temblor T10 | Custom headphones | TEAC-UD501+Passive Preamp | Emotiva BasX A-100
OCZ Vertex 4 256GB | 51TB DAS | SS Prime Ultra Titanium 1KW