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2nd VelociRapter Drive


Toppack

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Don't you think 120°F at idle is a bit on the higher side?

 

I thought 110°F for that speed could be achviable for idle (For prolonged idle use of the PC).

 

Cheers.

 

Yes, you are probably correct, those temps are my target Maximums.

(also Idle on this computer is Not a Real Idle, since it is nearly always running several things in the background)

 

It's the Maximum at heavy loads that I'm mainly Watching,

since that's where things 'Start to Cook'. 8:)

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Well, I ended-up with an Extra water-block, flow-meter, pump and some hose-fittings. :idea:

I may start designing a water-cooling setup for my gaming-system Next. :grin:

 

With it's larger case I can use a Larger radiator, with two or four 200.mm fans.

I can also mount everything 'Inside' that Cooler-Master 942 case.

 

I Like Water-Cooling:!: :grin:

 

200 x 400mm Radiator:

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Here are some pictures of my gaming computer:

 

I can mount the flow-indcator inside, at top of side-window,

(so it will be visible through window)

with pump inside, next to cpu water-block.

In second picture you can see where the top two 200.mm fans are,

and I can mount the radiator below them.

I can not find a good place to mount the reservoir and fill-plug,

since I don't want to remove the top-cover or side-cover for access to fill-plug.

I may have to mount them outside back-side of case,

since there are grommeted-holes there.

 

If anyone has better idea, please let me know?

 

I ordered the 200 x 400.mm radiator and we will see how it fits.

 

BTW - If you are wondering about the Copper-color, I painted it with a spray-can. :lol:

(makes it look like it was machined out of a solid block of copper)

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I'm finding that computer Temperature is effected by Room-temp, with water-cooling,

as much as it effects it with fan cooling.

My house is about 10 degrees colder today, than yesterday, and the water-cooled CPU temp is also 10 degrees colder.

 

It's now at 84.deg F at Idle and at 4.0GHz.

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Oops, got a blue-screen at boot-up this morning. :shock:

 

So, evidently this CPU will not operate 100% of the time at 4.0GHz. (229 x 17.5)

But it's definitely Not an Overheat problem, just the limit of that CPU.

(may be caused to Vcore-Droop at boot-up)

 

I lowered it to 3.9GHz (223 x 17.5) and will try that for a while.

 

BTW - I have CPU-core voltage set to 'Auto', which I think goes to 1.35volts, which is VID,

and I'm not sure if changing that voltage level to 'Manual' and a higher-voltage will help or not ???

I may try that and see what happens.

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Dang, got another blue-screen at heavy data load. :roll:

I'm now back to 3.8GHz. (219 x 17.5) :-(

Which is what it was at before water-cooling.

 

So, water-cooling did Not allow me to Over-clock any higher. :?

 

Oh well, I suppose I'll need to get a better CPU if I want to get this computer any Faster.

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Hi Toppack,

 

Is the 0.1GHz incrimental speed difference at that speed levels noticeable?

Yes, there was a noticeable difference between 4.0 and 3.8.

Surprising but True.

I had hoped to get it to about 4.2GHz, but 'No such Luck'.

Since the newer CPUs will.

 

And, how loaded the disks are anyway?

 

The hard-drive partitions are less than half full, but how could that effect CPU maximum speed ???

(unless they were completely full, which I would never let happen)

If that is why you are asking ?

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It wouldn't effect the CPU max. speed GHz wise, but the incrimental difference could be more noticeable, I think. ;-)

 

Cheers.

 

Yes, full drives can really Slow, or even Stop, a computer.

 

Well, the water-cooling system is still going Strong. :grin:

 

I have the Next one designed and just waiting for all the components to get here.

I got the other flow-indicator modified with mounting-hole and hole for LED.

I'm going to modify the water-block with temp-probe attached directly in or on it, if possible.

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I can tell already that major-modifications will be needed to fit the 200 x 400mm radiator in the HafX-942 case.

In the online blogs I read, they said it was "Easy",

and I suppose it is, compared to Some things. :lol:

 

Hey, all I need is a 'Big Hammer'.:idea:

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I decided that making the 400.mm Rad fit the 942 case would require too much Chopping of metal, :roll:

So, going to try a 120 x 360mm Rad instead.

It is a Cross-flow design, which means that it has one hose-connection port at each end, instead of both at one end, like most of them do.

This will allow a shorter hose to one connection and I think improve cooling also.

 

BTW - I may have a 200 x 400mm Radiator for Sale, if anybody needs one. :wink:

 

See picture of 120 x 360 cross-flow:

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Warning - evidently None of the Pump/Reservoirs, like the one I pictured in a previous post,

come with the red-color internal Flow-indicator. :-?

(I got a 2nd one, from a different seller, and it does not have it either)

 

The Pump is great though!

 

See pictures:

(2nd pic is how they Really look, with No flow-indicator)

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If my current-meter is correct, then Both Pumps together only draw .56 Amps, (after they stabilize)

so I think that is 6.7 watts Total. (assuming there is 12. volts applied)

 

So, two smaller pumps, instead of One large high-power pump, is Much Better way to do it. :idea:

 

If you Only have one pump and it fails, something is going to Cook. :?

 

Much less expensive, with two small pumps, Also. :grin:

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Is there a way to calculate the Flow-rate of a closed-loop water-cooling system,

if you know the flow-rate of the two pumps in the loop?

 

One pump is 300.L/h and the other is 400.L/h (liters per hour),

 

I doubt they would be added together for a total?

(although the flow-indicator appears to spin about twice as fast with both activated)

 

I'm guessing somewhere around 550.L/h total,

but I can not find a way to do even a Close calculation ? :-?

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Hi Toppack

 

Are the pumps in series or parallel in the closed loop.

 

In series.

 

 

BTW - I realize that published flow-rates are Not the Actual rate of pumps, when in a very restrictive system like this

I'm just trying to get a Fairly accurate referance total when using two pumps

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I am assuming that when you say it isa closed system that it is not open to atmosphere at any point (it does not have a reservoir tank which is open to atmosphere).

In such a case there is no advantage in having two pumps in series, particularly when they are of different ratings. The smaller pump will cause a restriction to the higher flowrate of the bigger pump. The rule is that the system can only perform to the efficiency of the smallest element.

If the small pump is first in the loop, then the big pump will cause a suction at the output of the smaller pemp as it will be making a demand which the small pump cannot supply. If the big pump is first in the lop it will create a pressure at the inlet of the small pump which will try to make the small pump work beyond it's rating. The small pump sizing is designed for 300ltrs so you will probably only still get 300ltrs out but with a pressure buildup on the pump inlet.

So I wouldsay that your flowrate is 300ltrs overall.

The only time that two pumps are put in series in a closed system, is when there are large distances involved, and the flow rates must be maintained due to a loss of pressure over distance. In that situation, the pumps would be of equal size (rating) and spaced at a distance which would maintain flowrate and pressure.

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Sorry, it Definitely does Not work that way !

 

Since the flow-indicator spins twice as fast with Both pumps activated,

(or with only one in the loop)

I Know the pressure and flow-rate are Much greater with both activated.

 

(It's like increasing the Voltage in an electrical circuit)

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What is the position of the flow indicator in relation to the two pumps.

What type of flow indicator is it.

Have you got a pressure measurement ( as the flowrate can be calculated from the pressure)

It is possible forthe flow indicater to run faster depending on its position in the loop, without a gain in overall flowrate. It is also possible for the pumps to exceed their ratings due to the pushme pullyou effect, provided the pumps are not positive displacement and are capable of overpressure slippage.

It is difficult for me to guage these things without a view of the setup.

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What is the position of the flow indicator in relation to the two pumps.

What type of flow indicator is it.

Have you got a pressure measurement ( as the flowrate can be calculated from the pressure)

It is possible forthe flow indicater to run faster depending on its position in the loop, without a gain in overall flowrate. It is also possible for the pumps to exceed their ratings due to the pushme pullyou effect, provided the pumps are not positive displacement and are capable of overpressure slippage.

It is difficult for me to guage these things without a view of the setup.

 

Flow-meter is between the pumps.

(pressure and flow-rate will be the Same through the complete loop, since it is a Short loop)

There are pictures of flow-meter in this thread. (pages 6, 7 & 8)

Flow-meter is the only indicator of rate and pressure.

No, If the flow-meter spins faster then the flow Must be Increasing.

The previous pictures, on pages 7 & 8 of this thread, show all the components of the water-loop, of that computer.

 

I'm working on a 2nd computer now but the configuration and components will be similar.

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