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!VERY strange cooling for graphics card (memory only partially covered): problem?

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post #11 of 15 (permalink) Old 03-09-2019, 01:45 PM
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Quote: Originally Posted by pulverizor View Post
ok

so what happens with the half covered half bare chips then? like will it be a red/blue hot/cold with one half red hot & the other blue cold (thermal imbalance) or does the chip "balance out" on its own?

I mean chips ain't metal either right? that non-shiny dark grey material that covers all memory chips (whatever it is) looks more like an insulant or something so if a heatsink only touches part of the chip then wont only that part will be cooled & not the whole chip? would the other part still remain hot?
If the whole IC is covered w/the same piece of thermal tape I'd guess the thermal tape would conduct the heat to the heatsink/heat plate even if it weren't directly contacting the heatsink/heat plate so maybe it would be a good idea. The other thing to consider though is that thermal tape is sticky and it will attract dust.
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post #12 of 15 (permalink) Old 03-09-2019, 02:06 PM - Thread Starter
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Quote: Originally Posted by 8051 View Post
If the whole IC is covered w/the same piece of thermal tape I'd guess the thermal tape would conduct the heat to the heatsink/heat plate even if it weren't directly contacting the heatsink/heat plate so maybe it would be a good idea. The other thing to consider though is that thermal tape is sticky and it will attract dust.
no I meant what happens with the design "as is" (no modification): half covered by thermal pad & heatsink, the other half bare (no pad & no heatsink)

is there a thermal imbalance? would the bare half show as much hotter/red vs the other covered half as cold blue in an IR image?

or instead does the chip by itself "spread out" the heat between the bare half & the covered half?

I ask cause those chips aint metal (dunno what they're made of)
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post #13 of 15 (permalink) Old 03-09-2019, 02:32 PM
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Quote: Originally Posted by 8051 View Post
If the whole IC is covered w/the same piece of thermal tape I'd guess the thermal tape would conduct the heat to the heatsink/heat plate even if it weren't directly contacting the heatsink/heat plate so maybe it would be a good idea. The other thing to consider though is that thermal tape is sticky and it will attract dust.
Stop feeding the trolls!

https://www.overclock.net/forum/246-...lematic-2.html
They already beat the horse to death in the other thread, they're either trolling or just looking for a problem that was never there. The fact that the GPU works and doesn't throttle should have been enough. The fact that ram barely needs to be cooled should have been enough.

Quote: Originally Posted by ciarlatano View Post
...the memory here requires very little in the way of active cooling, if any at all. As @white owl already pointed out, contact with half the chip will provide some active cooling to the whole chip. Adding more thermal pads will actually be counterproductive, as it will not allow air to move over the chip.
To assume that adding more pad over it would cool better would be about the same as adding paste to a CPU with no cooler and thinking "it'll help transfer heat to the air more good". -or- a CPU with a cooler only cooling half the chip. Obviously that paste isn't helping.

If the chip conducts heat better than the pad (it does), all you're doing is putting a jacket over the other side.
Intel CPUs with factory paste have the same "thermal imbalance" since one or two cores can be 10c hotter than the other which is likely a much higher delta that what's you'd see cooling half of a 5w ram chip.

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post #14 of 15 (permalink) Old 03-09-2019, 02:39 PM
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Besides, heat transfer will equalize the RAM IC temp regardless if it's covered,half-covered or naked.


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post #15 of 15 (permalink) Old 03-10-2019, 10:16 AM - Thread Starter
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Quote: Originally Posted by white owl View Post
Stop feeding the trolls!

https://www.overclock.net/forum/246-...lematic-2.html
They already beat the horse to death in the other thread, they're either trolling or just looking for a problem that was never there. The fact that the GPU works and doesn't throttle should have been enough. The fact that ram barely needs to be cooled should have been enough.
no man I just wanna compare opinions you see some disagree with you apparently that's why I wanna know for certain

for instance:
Quote:
If the chip conducts heat better than the pad (it does)
you absitively SURE about that?

what's the chip made of? the grey rigid covers I mean (looks like something halfway between plastic & metal so how well does that stuff conduct heat compare to thermal pads?)
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