Switching serial loop to parallel
Figured I'd ask before I did something stupid or well more stupid. The plan is to connect the gpu and cpu in a parallel loop. That is the input and output goes to the gpu and then goes to the cpu. Will there be any issues getting flow to the cpu if it goes to the gpu first? Or do it the other way around and go cpu then gpu?
This is how it's setup right now. I plan to reinstall the original vrm and chipset heatsinks as the Koolance blocks restrict the flow too much and do not seem to help much for overclocking. And maybe turn the case 90 degrees and do something clever with the case mod.
As far as changing from serial to parallel goes, you probably won't have better temps by doing it. The water will heat up and reach equilibrium so it won't make much difference for temperatures with just the one video card there. If you have good flow and temps are good, I'd just keep it as is.
Temps are good but the flow is the issue. The motherboard blocks restricted the flow so much a second pump was required. So if i'm removing those blocks I thought i'd might as well try a parallel setup. If it doesn't work then I can change it back to a serial loop.
as you know that flow will travel the least resticted then doing a paralle loop
would need to check all block flows in to a bucket an calibrate them
also need manifolds
as other said its not worth the effort with cpu gpu loop
It is still something I would consider. But from what little I could find on the flow rate of the gpu block and the cpu block, you might be right about the parallel setup.
Won't find out until the 3-way splitters and tubing arrive from Dazmode later this week.
Then again best way to find out if something doesn't work is try it anyways and record the results. Science!
As everyone is saying I think a series loop is a better option. The water will eventually reach equilibrium and the cooling rate is more dependent on the amount of dispersion of heat you can acquire (More Rads/Fans). Although here is another example of a parallel circuit.
It pretty much is a dual loop shared between the cpu and the gpu with a shared dual reservoir:
1) Waters pushed up into the big radiator
2) Out to the cpu
3) Into reservoir 2
4) Out and down to small radiator
5) Up and through GPU
6) Back and into reservoir 1
It becomes parallel inside the reservoir since the waters technically shared between reservoir 1 & 2.
A little to get your head wrapped around but it pretty much ensures that an equilibrium will be created between the CPU and GPU over time. It also happens to be my rig ;) But I like sharing ideas so here you go.
If I bought the dual D5 pump top instead of the serial dual D5 pump top I would totally do that. Though what I might try to do is turn the case 90 degrees and dremel out a spot for a dvd drive. Alright looks like I might stick with the serial loop. I got two 120mm radiators I could find spots for. Might help a bit.
I run 2 individual loops with a koolance rp-452x2. I used to run 3x crossfire which is why I initially set it up this way. You can't see the return from the lower rad to the reservoir because it is behind the drive bays and you can't see the hookups to the top rad, but each loop is Res-Pump-Blocks-Rad-Res. One pump runs the CPU/Mobo loop (red) and one pump runs the GPU loop (blue).
It has begun. Wish me luck. And no I'm not doing the parallel loop. Going to mount the res at the top of the case as bubbles are more likely to go there. And to keep an eye on coolant levels and so on.
Update: Good news everyone! It did not catch fire and is not leaking. The loop is simpler and should be easier to drain should something untoward happen. It is a bit louder now that the chipset heatsink is back. Nothing a good set of headphones can't cure. Flow did not seem to improve much. There is an improvement. Mostly around the cpu block but aside from that not much has changed. So now it is setup as res > pump > 240mm rad > gpu > cpu > 360mm rad > res.
Here's a pic. Sorry if it's dark and blurry. Cell phone camera is a bit wonky after the new rom.
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