If your paste is evenly and thinly spread when removing the cooler your mounting method should be fine. Maybe you just have a hotter chip and/or motherboard.
Of course the ambient helps a lot too... My chilly room @ 17.5C will definitely give better results than your 23C. In fact, the difference is ~5.5C and I'm suprised it 'only' gives a difference of about 10C under load.
However, the 0.1v vCore difference should give you lower temps :/ *puzzled*
Of course the ambient helps a lot too... My chilly room @ 17.5C will definitely give better results than your 23C. In fact, the difference is ~5.5C and I'm suprised it 'only' gives a difference of about 10C under load.
However, the 0.1v vCore difference should give you lower temps :/ *puzzled*