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[Phanteks] Glacier C399a (waterblock) for AMD ThreadRipper CPUs - Page 3

post #21 of 133
This looks better than the EK to me. Finally not a tiny block that was copied from smaller platforms and just given a bigger mount.
post #22 of 133
The holes are on the separation between the dies and the same happens with that separator again between the dies. Most of the heat exchange will occur where it is not needed.
post #23 of 133
Quote:
Originally Posted by Imouto View Post

The holes are on the separation between the dies and the same happens with that separator again between the dies. Most of the heat exchange will occur where it is not needed.
While I can understand how that can be rationalized, do you have any actual test data to support it?
post #24 of 133
Quote:
Originally Posted by mouacyk View Post

We're all thinking there's more to the block than what's being shown, otherwise it doesn't make complete sense.

It makes sense.

If the fins are the flow bottleneck, all that's needed to force water through all of them is that divider that keeps the flow from going over them.
Quote:
Originally Posted by Imouto View Post

The holes are on the separation between the dies and the same happens with that separator again between the dies. Most of the heat exchange will occur where it is not needed.

Water temperature delta within the block is going to be near zero if you have enough flow rate to cool the part in the first place.
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post #25 of 133
Quote:
Originally Posted by Blameless View Post

It makes sense.

If the fins are the flow bottleneck, all that's needed to force water through all of them is that divider that keeps the flow from going over them.

Pretty much what I was thinking. If you know fluid dynamics at all, water will flow through the area of least resistance, but with enough applied to a certain area flow (albeit lower depending on rate, resistance, and pressure) will occur in a whole given area.

This won't act as a venturi with high flow rate in the middle since the sides are not a static material.
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post #26 of 133
Quote:
Originally Posted by doyll View Post

While I can understand how that can be rationalized, do you have any actual test data to support it?

Water is much like air or electricity, they always find the less resistance path and follow it. If you put fins on something and don't force the coolant through them it will find another path. The only place where you see such thing is below the separator, between the CPU dies.
post #27 of 133
Quote:
Originally Posted by Imouto View Post

Water is much like air or electricity, they always find the less resistance path and follow it. If you put fins on something and don't force the coolant through them it will find another path. The only place where you see such thing is below the separator, between the CPU dies.
But each path/slot between microfins is much smaller than the inlet and exhaust ports in center of each half of finpack, so as each slot between microfins reaches it's maximum flow rate at a given pressure the additonal intake flowrate moves to next slot progressively moving to edge slots as maximum flow rate is reached in each slot. End result is near even flow rate between all fins and near equal temperature in much thicker base below micro-fin pack.
post #28 of 133
Quote:
Originally Posted by cdoublejj View Post

look at my post above

Without an impingement plate most of the water will travel in the red as its going to take the path of least resistance.

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post #29 of 133
Quote:
Originally Posted by BulletBait View Post

Pretty much what I was thinking. If you know fluid dynamics at all, water will flow through the area of least resistance, but with enough applied to a certain area flow (albeit lower depending on rate, resistance, and pressure) will occur in a whole given area.

This won't act as a venturi with high flow rate in the middle since the sides are not a static material.

I agree.

I think this design should work fine as long as flow rate is decent. Since it doesn't have a jet plate, static pressure should be fairly low, boosting efficiency. Water is also an excellent conductor, so as long as it's flowing through the circuit at all, any "stale" water on the outer edges is still rejecting heat into the "center", this of course is assuming that the entire contact area doesn't see the same flow.


Is this thing available to order any where? There are now several designs available, but the only ones not on pre order are the EK and the Bykski. My Bykski arrives today, and I only paid 65 dollars for it. It feels like money well spent. Without it I wouldn't have a loop till the end of the month.
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post #30 of 133
Quote:
Originally Posted by doyll View Post

But each path/slot between microfins is much smaller than the inlet and exhaust ports in center of each half of finpack, so as each slot between microfins reaches it's maximum flow rate at a given pressure the additonal intake flowrate moves to next slot progressively moving to edge slots as maximum flow rate is reached in each slot. End result is near even flow rate between all fins and near equal temperature in much thicker base below micro-fin pack.

But just where the separator is forcing the coolant to go between the fins. There is no die to cool there, just empty space under the IHS.
Quote:
Originally Posted by lowfat View Post

Without an impingement plate most of the water will travel in the red as its going to take the path of least resistance.

Pretty much. With more pressure the central fins should be saturated getting to the near ones and so on as the pressure goes up. Then again, nothing to cool under the separator.
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