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[Official] ASUS sabertooth AMD Owners Club - Page 936

Poll Results: whats your choice for 990fx

Poll expired: Jul 11, 2011  
  • 0% (1)
    Asus M5A97evo
  • 0% (1)
    Asus M5A99Xevo
  • 49% (58)
    Asus Sabertooth 990fx
  • 31% (37)
    Asus Crosshair V Formula / Thunderbolt
  • 0% (1)
    Biostar TA-990FXE
  • 12% (15)
    Gigabyte GA-990FXA-UD7
  • 4% (5)
    MSI 990FXA-GD80
118 Total Votes  
post #9351 of 10163
The only thing I see wrong with it assuming they get the whole PCIe 3.0 thing sorted is that the platform is dead.
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post #9352 of 10163
Its end of life yes. Then again, 990FX chipset doesn't support PCIe 3.0..
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post #9353 of 10163
Quote:
Originally Posted by hurricane28 View Post

Its end of life yes. Then again, 990FX chipset doesn't support PCIe 3.0..

You're missing, at most, 2 fps.
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post #9354 of 10163
In some cases, 2 fps.
post #9355 of 10163
biggrin.gif

Heads up Guys, New Win 10 drivers on the ASUS website ............ USB 3, Audio, And Lan.




Steve
post #9356 of 10163
OMG they actually acknowledge that Rev 1 exists biggrin.gif
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post #9357 of 10163
Quote:
Originally Posted by mus1mus View Post

First time to hear this. Which is kind of thebopposite as what many have been practicing.

Flow, (the speed water moves in an entity) actually improves cooling. But the effect diminishes after a certain point. The faster the water moves, the faster it takes away heat from the block. And results to better cooling.

But regardless, it doesn't really offer too much difference in a loop. Especially for big loops.
Clock the CPU as high as you can within your cooling power. The work on getting the RAM sett-up with a good speed and timings.

2133 9-11-9-27-1T or 1866 9-9-9-27-1T would be hoot for these chips.

I understand the concept of what you're saying and that everyone does but there are a few factors that can result in differences... Size of the cooling block, flow through it, size of tubes used for water transport, size of the radiator and air flow over it, not to mention ambient temps.

I was speaking more in terms of the contact time of the water through the radiator veins. One thing that should be kept in mind is that at higher velocities, water will get turbulent and will become layered and ultimately cause lower heat transfer as the layers will cause insulation disabling the heat transfer. So contact time in the radiator also has it's bare minimum before the airflow and potential heat transfer is being wasted on already cool water.
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post #9358 of 10163
As long as the flow doesn't cavitate from severe turbulence, increasing the liquid velocity always helps heat transfer. But with current block designs... squared off fin edges... it will cavitate.

In non-cavitating flow, turbulence is desired for improving heat transfer.

Fluid flow over a surface is always layered... but as long as there isn't a cavitation layer... i.e. the boundary layer isn't so turbulent that cavitation forms there, again, increasing fluid speed is desired.

But, as pointed out, too fast and it will cavitate... it really depends on the design of the water block.
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AMD FX-8320E @ 4.6 GHz +0.356250v offset Asus Sabertooth 990FX Rev1 eVGA GTX 970 SC ACX2.0 Patriot Viper Xtreme 2x4 GB 1600LL @ 1866 9-11-... 
Hard DriveHard DriveHard DriveCooling
Samsung 840 EVO WD Black 1 TB 32MB cache FALS WD Blue 1 TB 7200rpm EZEX Corsair H80i 
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post #9359 of 10163
The thing is, there will be a diminishing return in performance with liquid velocity. It's not that a fast moving water inside the channels (both block and radiator) will create higher temps, but just stagnate the water temps to a certain point.

I don't think you can actually see this happen with less than 3 D5s at full speed.


PS, rads with big tube channels will not really benefit with higher flow IMO. I have GTX rads that need some serious pumping power due to the channels being around half the surface area of some thicker rads. thumb.gif.
post #9360 of 10163
My advice - don't go about a liquid velocity of 792 feet per minute. wink.gif
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Ryzen Shine!
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