Quote from: lennyNO on February 28, 2018, 11:12:07 AM

Quote from: Finless on February 27, 2018, 06:39:10 PM

That is 176F and I am far below it at 153F. To me this seems OK then? Even at 832 clock and 163F this is still well below 176F.

far below?? well below?? Seriously, all that is given is that the chip hasn't fried itself, just yet. Good luck! You are operating at the edge of it's operating range, and while 153F is within limits by all accounts it is seriously hot. 176F is not a safe operating limit, but a potential fry and die limit. You also have to be aware of changes in ambient temperature, if the ambient rises, so goes the chip temp. In general, even if it runs, you will shorten lifespan if it gets that hot over long time.

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So why do I need another fan? I cannot go above 832 clock as I get too many hardware errors (over 10%) on these even cranking up the core voltage.

When you are overclocking you are on your own, and you want to do everything reasonable to keep the babies alive. Alive==cool. 832 == overclocking. But yeah, it's not that you MUST have cooling. But you should! jstephanop wrote a good comment on this a few pages back, when one guy had 8 MLDs running at 5.5Mh/s or thereabout. You should read it. I run at 924Mhz with about 0.7%HW and ca 45C core. AND extra cooling (usb fans). Some ppl remove the stock fans --> you are on your own, even at normal clockspeeds. 10% is way too high at normal clockspeeds. You should have less than 1% at 600Mhz.

I did not say I get 10% an normal clock speed. I am below 1% at 796 but above 10% at 832. Even when they are ambient and I start up. So it's not heat related I get 10% at 832. It starts above 10% and stays that way. And I have tried increasing core voltage to .85 and still get that. PSU is 5 amp. Anyway I am running at 796 just fine on both sticks. Good enough for me. And yea in my first message I said my ambient temp of 75F during the day thus running 153F at the hottest at 796 clock. Obviously at night I am running less than 153F (about 145F).

I will consider your extra fan but reading jstephanop note, "they should run fine up to 800". And I am able to get memory voltage to .73V no problem. Core is running at .75V

I have a friend with a machine shop and he could easily make a larger rear heatsink (longer fins) but it doesn't look easy to remove the existing heatsink.

Bob