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[Review] Swiftech MCP-35X & Reservoir Combo Rev2 - by Martinm210 - Page 2

post #11 of 18
Quote:
Originally Posted by Martinm210;12457450 
Good question.

While I haven't experimented much with dynamic throttling of the pump, a combined loop would add that layer of complexity. We don't have much test data to show flow rate impacts to GPU blocks, but you are right about throttling per CPU temp. In a combined loop you would probably want to set that lower PWM limit a little higher than a CPU only loop. Rather than 30% at the lower you might want 50% or something like that.

What I would do is play with manual setting first. Dial the pump down to various setting, then go do CPU and GPU type benching. You would need to feel out what sort of settings work for you. I think most people will find they can dial the pump down quite a bit without seeing much loss.

I would also like to experiment with throttle per water temperature, but that would require an add on controller.

Just use speedfan with elevated privileges and tell it to vary the speed of the pump based on CPU and GPU temperatures. Speedfan ramps up if either one gets hot.
    
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post #12 of 18
Hey Martin, I had a brainstorm, or maybe it was more crazy... anyways I connected my gpu loop 35x pump to my video card header. Now I can use an afterburner profile to control the pump. It works much better for me since I often have the gpu loaded at different levels compared to the cpu. The amount of control available is great and rather precise.
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post #13 of 18
Thread Starter 
Quote:
Originally Posted by tsm106 View Post
Hey Martin, I had a brainstorm, or maybe it was more crazy... anyways I connected my gpu loop 35x pump to my video card header. Now I can use an afterburner profile to control the pump. It works much better for me since I often have the gpu loaded at different levels compared to the cpu. The amount of control available is great and rather precise.
Nice! I had heard that was possible, but never tried myself. I think that would be the ideal for gpu only type loops.
    
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post #14 of 18
Quote:
Originally Posted by tsm106 View Post
Hey Martin, I had a brainstorm, or maybe it was more crazy... anyways I connected my gpu loop 35x pump to my video card header. Now I can use an afterburner profile to control the pump. It works much better for me since I often have the gpu loaded at different levels compared to the cpu. The amount of control available is great and rather precise.
I've had both of my MCP35x pumps running off the PWM output on my video card for a few months now.
I'm using Speedfan to control their speed since it isn't just a video card loop.
I'd probably still use Speedfan if it was a GPU only loop. The user definable fan profiles in Afterburner are nice, but on my Asus ENGTX470, the minimum fan speed is fixed at 30% if I use Afterburner, but I get the full range in Speedfan.
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post #15 of 18
Quote:
Originally Posted by Martinm210 View Post
Nice! I had heard that was possible, but never tried myself. I think that would be the ideal for gpu only type loops.
Yeap, it became painfully obvious during the chimp challenge.

Quote:
Originally Posted by Caleal View Post
I've had both of my MCP35x pumps running off the PWM output on my video card for a few months now.
I'm using Speedfan to control their speed since it isn't just a video card loop.
I'd probably still use Speedfan if it was a GPU only loop. The user definable fan profiles in Afterburner are nice, but on my Asus ENGTX470, the minimum fan speed is fixed at 30% if I use Afterburner, but I get the full range in Speedfan.
Was it a hard limit in AB, like it was coded in there? That aside, I didn't want to use speedfan because I already use AB to display OSD temps, and gpu usage scaling in-game, so why not use it to control the pump I thought. Also, couldn't you just use speedfan with the pumps connected to headers connected to the mb? The ws revo can switch to all headers to pwm if need be, but for me it's just a lot easier to have AB do it and reduce my running apps.
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post #16 of 18
Quote:
Originally Posted by tsm106 View Post
Hey Martin, I had a brainstorm, or maybe it was more crazy... anyways I connected my gpu loop 35x pump to my video card header. Now I can use an afterburner profile to control the pump. It works much better for me since I often have the gpu loaded at different levels compared to the cpu. The amount of control available is great and rather precise.
no u tie it to a rheobuss pwm, and then tie up 3 san aces to that radiator.
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post #17 of 18
Quote:
Originally Posted by NaeKuh View Post
no u tie it to a rheobuss pwm, and then tie up 3 san aces to that radiator.
Rheosmart.

I had issues running both my 35x and 7 ap15s off a "rheosmart 6. Bleh... tossed that thing aside. Also the front cover of the rheosmart is a pain in the behind to mod with its cheapo buttons and mesh grill unlike my beloved rheobus 4.
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post #18 of 18
Quote:
Originally Posted by tsm106 View Post
Was it a hard limit in AB, like it was coded in there? That aside, I didn't want to use speedfan because I already use AB to display OSD temps, and gpu usage scaling in-game, so why not use it to control the pump I thought. Also, couldn't you just use speedfan with the pumps connected to headers connected to the mb? The ws revo can switch to all headers to pwm if need be, but for me it's just a lot easier to have AB do it and reduce my running apps.
It is a hard limit in AB, when I move the slider all the way to the left, it is 30%, and in the user profile graph, there is a line at 30% that the temperature points can't be set below. The same is true for my EVGA GTX560 Ti too.

Sadly, my Asus P6X58D-E motherboard only has 2 PWM headers.
The CPU_Fan header is not controllable by speedfan with any combination of settings, and I can't get the CHA_Fan header to work for any PWM devices that are not also powered off the header. If the PWM fan/pump is powered directly by the PSU, with just PWM and RPM going back to the CHA_Fan header, the fan/pump just runs at 100%.

Currently I'm using Speedfan to run the pumps off the video card PWM signal, and using a user defined profile in Asus AI suite to run my 9 radiator fans off the CPU_Fan headers PWM output.
The Asus AI suite sets the profile in hardware, so doesn't have to be running, thus using resources, after I set it. Unfortunately it only offers 3 control points.

I'm not entirely happy with Speedfan. I'd rather be able to set multiple steps for the control points instead of setting a curve between 2 points.
With steps, the fans/pumps would run at a set speed until the temperature for the next step is hit, then they would speed up to the next speed and stay there until the next set temperature, and so on.

With speedfan you can only select a minimum and maximum speed, and desired and warning temperatures. The speed varies up and down within the min/max speed range to attempt to maintain the desired temperature, and ramps up to 100% if the warning temp is hit...
Useful if one of my series pumps fails, but annoying the rest of the time.

I was able to game it a bit to prevent the pump speeds from fluctuating up and down, but I'd like to be able to set a profile of steps like you can in AB.

I think to get what I'd really like to have, I need an Aquero 5.
I've found that when the ambient temperature in my house is = or <26ºC, I get the best CPU cooling performance with the pumps running at 35%, higher than that provides no additional CPU cooling benefit.
At higher ambient temperatures, like the 31ºC my house gets up to in the afternoon while I'm away, I get the best CPU cooling performance with the pumps running around 45-50%.
Currently I have no way of setting something up to automate the speed change, so I just change it manually before I go to work, and when I get home.
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