D5 variable, not so variable?

[eTanium]

I have a D5 pump, which I can set manually, but that isn't idea due to the fact that I would have to open up my case every time I need to adjust the flow.

It seems the manufacturer thought of this issue and supplied a connection for a motherboard PWM fan header.

So, I had my D5 plugged into the "CPU-OPT" fan header, but when I use Fan Expert II (ASUS P8Z77-V), it won't let me adjust the speed; it just shows it at max power and 4017rpm!

I moved the fan connector to "case-1," which would be the front fan, and I get the same result.

Any ideas on why this is happening?

Thanks.

 

[S_I_N]

model of D5 and a pic would help I didnt realize they made it such a way. Besides its normally a set it and forget it thing, I for one cannot think of any reason you'd need to adjust the flow once its bled and running.

 

[eTanium]

Here is a page with the info:
http://www.performance-pcs.com/cata...e=product_info&cPath=59_201&products_id=33825

Faster flow rates = lower temps, no? I was under the understanding that I could have it at low speeds when web surfing and stuff, and then ramp up when playing 3D games or video editing.

It is very quiet at speed 5, but would be SILENT at speed 3. I can set it to speed 3 and disconnect the fan header from the motherboard, just as long as my temps don't suffer.

 

[Timeless]

The D5 is a very powerful pump so unless you are cooling a crazy amount of blocks and/or have a very restrictive loop like cpu, serveral gpus and motherboard blocks, quick disconnects, etc... putting the pump at speed 2 or 3 is more than good enough.

Having your flow too high can actually work counterproductive and give higher temps.

If you're unsure do some temp tests.

 

[nepas]

Here is a page with the info:
http://www.performance-pcs.com/cata...e=product_info&cPath=59_201&products_id=33825

Faster flow rates = lower temps, no? I was under the understanding that I could have it at low speeds when web surfing and stuff, and then ramp up when playing 3D games or video editing.

It is very quiet at speed 5, but would be SILENT at speed 3. I can set it to speed 3 and disconnect the fan header from the motherboard, just as long as my temps don't suffer.

errrr,the 3 pin is just so that you can monitor the rpm of the pump,nothing to do with controlling the speed.

I just leave mine at 3.

 

[Master&Puppet]

The way to control the pump is by using a power modulating cable on the molex and hook the pump up to a powerful fan controller. Then depending on the controller you can either turn the speed up manually or set thermal limits and speeds so it ramps up automatically.

 

[Scoob]

Picking up a D5 myself soon - I can only see myself not leaving on full if it's really noisy...even then I'm more likely to look into sound deadening rather than turning it down.

In my particular application the pump is going to be mounted externally on a rad chassis, so easy to get to.

Still, if the pump is near silent at setting 3, but a little noisy at setting 5 and cooling isn't affected too much then it'd be nice to have the option to run silent easily. Setting 5 could be reserved for benching sessions for example.

Quite often you can find that a "useless" feature (I don't expect to turn mine down!) proves nice. As D5's are a great pump anyway, I'd just get one and see

Scoob.

 

[eTanium]

Ooops, yep, I realize that the extra fan header connection is just to monitor the RPMs of the pump. No real need for it other than ensuring that the pump is working.

As for the noise... it has a very very low hum. I prefer this over the high pitch fan of the old CPU cooler.

I went from 90c+ on a prime95 test to 60c on the water cooling I have going with the D5!

 

[Josh Weston]

Nice temps, dude
What clocks/volts were you running to achieve 90*c on prime?

 

[eTanium]

I was running a stock Intel Core i7-3770K with the stock heatsink and fan. I thought i was going to blow up my CPU!

Now, it can take it like a champ, and with room to overclock!

 

[B NEGATIVE]

I run D5's exclusively,DDC's are hot and noisy,i run mine from a fan controller with no issues but even at full power its inaudible,i do have mine mounted on silicone washers for dampening tho.

A good use of the tacho is to fit to the CPU fan header and have BIOS set for shutting the rig down for CPU fan fail,a painless way to safeguard against pump fail...not that D5s actually fail TBF.
I have 1 one my bench and 2 24v ones in my SR-2 rig...lovez them!

 

[eTanium]

A good use of the tacho is to fit to the CPU fan header and have BIOS set for shutting the rig down for CPU fan fail,a painless way to safeguard against pump fail.
I have 1 one my bench and 2 24v ones in my SR-2 rig...lovez them!

I have it on an "cpu_opt" fan header; basically in case you need two fans for your CPU cooler. Do you think that if it failed, the MOBO would still shut off the PC?

 

[tinytomlogan]

Not sure if this has been said yet because I cba to read the whole thread. The blue wire is just for monitoring NOT control. I never use it anyways, just set the PC to shut down if its hot. Otherwise its yet another cable to make your rig look messy.

Just another wire for nooobs to worry over that you dont really need.

LMFAO

 

[airdeano]

Just another wire for nooobs to worry over that you dont really need.
LMFAO

LOL.. more wires to sleeve, too...

airdeano