I bought a bunch of MSI armor 4gb OC.

Using a power save bios, I'm able to achieve between 25 to 27mh/card using 100w/card But.. for no reason, even if I set the clock engine to 1075, when launching claymore, it shows 1068-1075 then drops to 813 to 830mhz. I even tried using the -cclock 1075 in the batch file but no success so far, anyone experiencing this? It results in a card doing 21.3 to 21.7mh/sec.. Hynix memory... I'm confused.

Thank you!!