Water temp is still high with so many radiator

[mrthanhnguyen]

I have 1 420 and 1 480 inside the case and the water temp idle at 28c; ambient at 23c. Full load with 9900kf and 2080ti, water temp is around 37-38c. With the mo-ra3 outside the case, the water temp is still 28 at idle. I see Jay2cents has 4 480 rad and water temp is just 1c above ambient. Why after adding the mo-ra3 and the water temp is not cooled down close to ambient?

 

[thesmokingman]

Off the top of my head, either your flow rate is really slow or your fans are too slow.

 

[JustAnEngineer]

In theory, routing water from CPU to GPU to top radiator to front radiator should let you get some very low CPU temperatures. The strength of this arrangement is that the two radiators are in a counter-current series. The coolest water is exchanged against the coldest air to achieve the closest temperature approach and the warmest air is exchanged against the hottest water to achieve the highest discharge temperature.

Is the air coming out of your top radiator especially warm? If so, increase air flow.

 

[mrthanhnguyen]

Of course when system is at full load, warm air exit the top radiator. Fans run at 800 rpm, 4 noctua fan on mo-ra3 also run slow too. Pump runs at max speed.

 

[JustAnEngineer]

Maybe you should try 1500 rpm NF-A14 PWM fans and/or 2000 rpm NF-A12x25 PWM fans in place of slow fans?

 

[Nuckles56]

For real though, why are you that worried? As temps are nice and low, I'd rather have a much quieter system that chasing those last few degrees above room temp.

 

[thesmokingman]

Of course when system is at full load, warm air exit the top radiator. Fans run at 800 rpm, 4 noctua fan on mo-ra3 also run slow too. Pump runs at max speed.

That's a single pump? I hope you are not using a D5?

For real though, why are you that worried? As temps are nice and low, I'd rather have a much quieter system that chasing those last few degrees above room temp.

His water temp delta is sort of bad, really bad.

 

[phill]

I take it that you have the CPU and GPU in the same loop? What sort of speed are your fans spinning and more so, what make/model of fans are you using? Could be the main issue if the fans aren't pushing enough air through the rad for a start possibly?? What case do you have this installed in?

 

[mrthanhnguyen]

CPU & GPU are in the same loop. All internal fans are corsair ml120/140 pro rgb and they are running at 800 rpm. 280 front suck cool air in, 120 at the bottom suck air in, 360 from top blow air out of the case, 140 blows air out of the case.Pump/ reservoir combo is ek quantum kinetic 300. Outlet on the pump runs straight to the mo-ra3 420 outside the case then back in radiator inside case. There are 4 noctua 200mm fan on the mo-ra3 which running slow as well. I want to slow down fan speed thats why I bought the mo- ra3 but the perfomance is not as I expect.

 

[thesmokingman]

D5, I knew it Your flow rate is probably at a trickle man. You have a ridiculous amount of head pressure load, all that plumbing and the number of rads. You are going to need at least two D5 at max spd or ideally a MCP35X2. Fyi, the high delta temp literally means you have hot water running thru your rads and it is not being disipated.

 

[JustAnEngineer]

If water flow is low, and air flow is high, he should have low water temperature out of the final radiator in the water flow path (the one on the front). If air flow is low, he should have high air temperature out of the last radiator in the air flow path (the one on top). If they're both low (as seems possible given how much flow resistance there is with two water blocks, two radiators and a pile of hoses), it could be either way, but you'd expect high GPU temperatures under load.

 

[mrthanhnguyen]

Is EK-XTOP Revo Dual D5 ok? Last night when I first connect the system to the mo-ra3, cpu is idle in the 20s, gpu cant go above 35 during heaven benchmark. Today, cpu idle in the 30s and gpu breaks 40c during benchmark.

 

[thesmokingman]

Is EK-XTOP Revo Dual D5 ok? Or the swiftech better?

An MCP35X2 has a bit more static head pressure than dual D5. Though I am partial to higher pressure pumps, you might be able to skate by with just two D5. Gotta remember the pressure drop on the Mora is high just as all 1080 externals. You need lotta head pressure.

 

[mrthanhnguyen]

There is the ek pump in the system now and that swiftech is a different pump, will it damage each other when running at different speed?

 

[thesmokingman]

There is the ek pump in the system now and that swiftech is a different pump, will it damage each other when running at different speed?

If you were buying a 35x2 pump, I would jut use the 35x2. You could indeed use them together w/o issue if they were both running relatively similar speeds, but again, I'd just run the 35x2 and keep it simple. Sell off the other pump, recoup some money.

 

[mrthanhnguyen]

That ek pump comes with the reservoir. Is that swiftech dual pump works with any reservoir?

 

[thesmokingman]

That ek pump comes with the reservoir. Is that swiftech dual pump works with any reservoir?

Yea, you can plumb it to any standard res. It also has an optional specific res though a larger res will be easier to work with.

 

[mrthanhnguyen]

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TITAN RIG specializes in quality PC Water Cooling and Air Cooling Components. FREE Shipping on order over $99 within the contiguous US. 30 Day Return Policy.

www.titanrig.com

that reservoir works with that dual pump? Do I need any fitting to connect the pump to the reservoir? I have some spare compression fitting but dont know if it works or not. There is a reservoir on swiftech website specific for that pump but It is too small.

 

[thesmokingman]

Search results for: 'bitspower water tank z multi ultra 250 reservoir clear tube black pom 0340bp011501on'

TITAN RIG specializes in quality PC Water Cooling and Air Cooling Components. FREE Shipping on order over $99 within the contiguous US. 30 Day Return Policy.

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that reservoir works with that dual pump? Do I need any fitting to connect the pump to the reservoir? I have some spare compression fitting but dont know if it works or not. There is a reservoir on swiftech website specific for that pump but It is too small.

You can use any standard res, box or tube. You need fittings for pump to res, two barbs and clamps or two compressions. Then pump to loop and loop to res, so that's 4 total. The switftech 35x reservoir is tiny but it works and its cheap though it does take some tricks to fill w/o running dry, etc etc. Thus a standard res is easier for most users.

Here's an example of how'd you connect a 35x pump.

 

[mrthanhnguyen]

I heard that m35 pump is loud, isn’t it? U using 1 in yo system? What is your temp?

 

[thesmokingman]

I heard that m35 pump is loud, isn’t it? U using 1 in yo system? What is your temp?

It's loud if you don't know how to run it. The pump is at max efficiency at just over 50% duty cycle where you get 95% of pump power while being quiet. Thus don't run it higher than 50% DC on the PWM controls. My temps are pretty good, with water temp rarely going over 30c with a typical 23/24c ambient. Cpu idles around 32c, gpu idles around 25c... water temp at idle is 26/27c.

I've run multiple externals in the past back in the day when benching was big.

<--can you see my 35X2 tucked under the drive bays on the right side, sitting on my 2nd psu?

<--I ran dual psu back in the day and this is the draw off of just one psu.

 

[mrthanhnguyen]

The swiftech dual pump will not be available soon due to stay at home order in Cali so I go with the dual d5 from Ek. Hope it works.
Order 1 from ebay also. Its a little more expensive . Will try which pump works for me.

 

[TheoneandonlyMrK]

Of course when system is at full load, warm air exit the top radiator. Fans run at 800 rpm, 4 noctua fan on mo-ra3 also run slow too. Pump runs at max speed.

I use dual Laing Ddc 18watt pumps.

Your flow rates probably low , your fan speeds are definitely slow though too, you need to give your system some options for ramping up.

 

[thesmokingman]

The swiftech dual pump will not be available soon due to stay at home order in Cali so I go with the dual d5 from Ek. Hope it works.
Order 1 from ebay also. Its a little more expensive . Will try which pump works for me.

I do not recommend going dual D5 without a flow meter in hand. D5 are NOT the pumps to use when static head pressure is of paramount importance.

MCP35X2 - Rouchon Industries Inc., dba Swiftech - PC Liquid Cooling Systems CPU Cooler VGA Water Block Heatsink Pump Radiator Heat Exchanger Kit

Extreme Duty, 12 VDC, PWM controlled, DUAL Pump, including: (2) MCP35X pump motors, (1) MCP35X2-H dual pump housing, mounting screws, (1) G1/4 plug, (2) G1/4 to 1/2" barb fittings, (2) hose clamps, adhesive foam pads, PWM cable splitter, manual.

www.swiftech.com

white one in stock, get the optional heatsink too for cooling and the cool mounting feet oe. decoupler.

 

[mrthanhnguyen]

They are in stock but swiftech emailed me and said because of stay at home order, they will delay my order. They dont give specific time when they will process an order. It could be a month or so. If dual d5 is worse than swiftech, I will just return it. Shipping fee is not bad.