Card isn't working with full power after OC

nerfipro174

Prominent
Oct 15, 2017
6
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510
Hi, today i started overclocking my graphic card (MSI GTX 650 2GB OC Edition).
I've run msi afterburner and set core speed +10mhz, gpu-z showed that core clock increased from 1072mhz to 1082mhz, but during the benchmark card was working at 1071mhz, like before OC. Then i've set core spped to +20mhz, gpu-z again showed than core speed increased to 1092mhz, but this time during the benchmark card was working at 1084mhz, that means clock increased but didnt work with full power. Every next time when i increased core speed situation was the same. Core speed didn't increased or increased but didn't work with full power. I've tried to use evga precision instead of msi afterburner but there was the same problem. I was using benchmarks like Valley Benchmark and MSI Kombustor 3. Reinstalled card drivers but it didn't help :/

MY PC:
CPU: FX 6300 OC to 4.3ghz
CPU COOLER: Box
MOBO: Gigabyte GA-970A-DS3P
GPU: MSI GTX 650 2GB OC Edition
PSU:Chieftec GPE-500s
RAM: 2x4GB DDR3

Sry for my bad english, i'm still learning :)