After some digging, I found out that this library is NOT available at all for OS X, which means you're very limited when mining on a macĪs comparison, I get just over 1000 kh/s when mining under OS X (just over 500kh/s per GPU) on optimal settings, and about 1500 kh/s (750 per GPU) when mining on the same hardware under windows after some fine tuning.
#Macminer fan speed and macbook heat software
This is done through a library called the ATI ADL SDK, and allows software to control the GPU's core/memory clock speeds, voltage, fans and similar.
For best performance with cgminer (or similar mining software), it's often necessary to tweak GPU settings. 'Normal' (harmless) operating temperatures range from about 40☌ to 100☌, and fan speeds range from 2000 to 6000 or 6200 RPM (top speed depends on model). If the CPU temperature gets dangerously high, your. It the SMC crashes, the fans have fail-safe Hardware that sends them to maximum speed in seconds. It uses two 280x GPU's that identifies as d700's in benchmarks - they have the same amount of stream processors, memory bandwidth etc, so they should be pretty equal - the biggest difference is 6GB memory vs 3 GB, but I'm not sure how much difference that makes when LTC mining.Īnyway, after some initial tests I noticed a hurdle. The System Management Controller SMC built into your Mac already sets fan speeds based on measured temperatures inside your Mac in a feedback loop. I just recently built a Hackintosh (because I couldn't justify the cost of a nMP for my uses, in short).
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