It’s perhaps with only 2 x 4Gb sticks that it can’t allocate enough uninterrupted space to the 1GB pages.
Try turning 1Gb to false in config and seeing what you get.
The hashrate loss won’t be much.
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I’d like to ask a question that I don’t quite understand. Why is it not necessary to have extra fans like you ordinarily see when assembled in a case?
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A PC case is basically a hot box without those extra fans. An open mining rig has much better passive heat escape, because it simply rises off the rig. The only real fan you then need is the cpu cooler, to maximise the cooling of the cpu, thus maximising hashing efficiency.
Btw, if you decide to build a rig inside a PC case, you’ll definitely still want those extra fans moving air through the case.
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