HEAD:a na 150W ti to limituje co? To že má něco 6ti-pin(75W+75W) neznamená že to nepustí přes, karty žraly v minulosti po OC často daleko za limity daný napájecíma konektorama, naopak kaskáda vypadá dimenzovaná na daleko více než 150W, pokud nepůjdou taktovat reference, tak jedině kvůli chlazení, nebo leda že by AMD začlo dělat podobný omezení jako nVidia a karty škrtit uměle, ale tomu zatím nic nenasvědčuje, spíše naopak viz nový screen z Crimsonů
Naposledy upravil(a) ArgCZ dne úte 21. čer 2016, 16:19, celkem upraveno 1 x.
ArgCZ píše:takže vlastně nikdy nebyla karta s 6+8pinem co brala po OC přes 300W? Zamysli se
Tady jde o maximalni odber co karta teoreticky muze dosahnout.
Karta s jednim 6pinem muze mit maximalni odber 150w at se treba stavis na hlavu a to bude limitovat oc.
Often gamers and users are mistakenly referring to 6-pin or 8-pin MiniFit.JR connectors as 75W or 150W capable inputs. Nothing can be further from truth. These power levels are nothing but just way for NV determine how capable is used board hardware to deliver power. It’s purely imaginary number and have nothing to do with actual power taken from connector nor power input capability. Software and NV BIOS will handle GPU clocks and reduce voltages if measured power hitting programmed BIOS limit (which can be different value than 75/150W!).
So if we just change circuit to report lower power reading, this limitation will be lifted accordingly as well. Also to make sure we are not at any physical limit of power connector itself, check Molex 26-01-3116 specifications, which have specifications both 13A per contact (16AWG wire in small connector) to 8.5A/contact (18AWG wire). This means that using common 18AWG cable, 6-pin connector specified for 17A of current (3 contacts for +12V power, 2 contacts for GND return, one contact for detect). 8-pin have 25.5A current specification (3 contacts for +12V power, 3 contacts for GND return and 2 contacts for detection). This is 204W at +12.0V level or 306W for 8-pin accordingly. Now if somebody tells you that 6-pin can’t provide more than 75W, you know they don’t understand the topic well. It’s not the connector itself or cable limit the power, but active regulation of GPU/BIOS/Driver according to detection of used cables and preprogrammed limits
HEAD píše:Karta s jednim 6pinem muze mit maximalni odber 150w at se treba stavis na hlavu a to bude limitovat oc.
Limitovat OC bude nastavení TDP v BIOSU a reálná spotřeba grafiky. Víme snad kolik bude žrát na default a o kolik to půjde posunout? (i když těch +50% to jistě nebude)