First time with a fully modular psu and it seems kind of weird.

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axlrose

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So simple question. I have a fully modular psu this time and I just don't seem to have much to connect to it. I want to make sure I'm not missing something.

Obviously there is a connection to the motherboard.

I have two gpu's to connect to.

*My fans connect to the motherboard headers and get their power there correct?
*My pump/res connects to the motherboard headers too and get their power there correct?
*My storage need to be connected to the psu, but I'm using my first M.2 drive to boot, so that doesn't need any power aside from the motherboard right?

Is there anything else I'm missing until I get the new build fired up and add the previous storage devices back on? It just feels weird only having the gpu and motherboard connected, but I think with M.2 and using motherboard headers for all of the fans, it's removed a tremendous amount of cabling from my previous build.

Thanks.
 
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JackNaylorPE

JackNaylorPE

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This is a bit hard not knowing the components involved. 1. You have the 24 pin power connector to the MoBo

2. You have the 4/8 or maybe 8+4 EPS connections to the MoBo

3. You have the one or two cables to each GFX card

4. As for the pump, a "real" water pump will blow a MoBo PWM connector. CLC type units usually draw 0.11 gpm or less and might get by, it's tough to know as they rarely publish power ratings.... but you should do whatever the manual says.

5. MoBo fan headers can usually handle up to 1 amp.... so if you using fan splitters or hubs, and exceed one amp, you'll need a power connector

Be aware that 100% modular isn't doing anything for you at all ... in fact it has disadvantages. Hybrid modular has the absolutely necessary cables hard wired and the optional ones modular giving you a "best of both worlds" scenario. You don't realize any advantaged between full and hybrid modular because the number of cables used is exactly the same. But with100% modular, you do introduce additional failure points, increased resistance and lost efficiency ... very small but still there... and extra cost. The only time we make sure to get 100% modular is when we are resleeving all the cables.

http://www.tomshardware.com/news/power-supplies-psu,8016.html

 
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coozie7

coozie7

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Yes, the fans will draw their power from the motherboard headers.

This is potentially hazardous, the pump can easily overload a motherboard header if it's a high powered part, those with a 4 pin PWM connector will be OK.
See if you can find the pump specs, 12Watts or more is likely to overload the motherboard header and would be better run off a separate fan controller.

Correct, an M2 drive will take all its power from the motherboard, HDD and optical drives will need (usually) SATA connectors, which will be on a separate cable. You can connect multiple SATA devices with one cable.

Notes:
Be careful not to mix an 8 pin PCI-E cable with the 8 pin EPS motherboard cable, they're wired differently. A modular EPS cable will only have one connector at each end, PCI-E cables will usually have one connector for the PSU and two 6+2 PCI-E plugs at the other.
NOT having a mass of unwanted cables is the joy of a expensive, fully modular PSU.
 
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axlrose

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Blackbird - And the CPU of course. Duh. Yes. Still connecting cables to the psu and got stuck at fans last night and must not have gotten to that. Thanks.

Jack - What is the EPS to the mothboard?
- When you say 'real' what do you mean? I have an EKWB L360 kit as my first ever water loop. It has a pump/res combo, but I believe it says to put it into the cpu header. I thought it said to put the three to one fan cable in the cpu header as well. I'll have to go back and double check that I guess. What would the loop cooling the cpu be connected to instead?
- Rad has three 120mm fans and the 3 to 1 splitter, which I currently have connected to cpu fan 2. I don't think I have any power connectors, and I'm not sure how they could connect if I have them connected to the motherboard. Are you saying I should connect the loop right to the psu? Another post talked about how bios wouldn't allow booting if there wasn't something connected to the cpu fan connectors on the motherboard.
 
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coozie7

coozie7

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The EPS is that (usually) 8 pin plug usually located at the top left hand of the motherboard, it feeds extra power to the CPU/headers.
The system won't run without it.

Yep, connect the pump to CPU-1 and the fans to CPU-2, the pump won't overload a single 4 pin motherboard header.
 
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JackNaylorPE

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https://www.ekwb.com/shop/aio-configurator/predator

1. "Real" means not a CLC. The EK Predaotor is not a CLC and has quality componentry including a adequately sized pup... the speed control should be connected to the MoBo, the power IIRC, uses a SATA power cable.

Integrated Fan splitter hub reduces cable clutter and keeps the unit aesthetically clean. Predator pump and fans plug into the unit itself with only one PWM cable going into CPU Fan socket, while a single SATA molex cable powers the complete unit.
Click to expand...

2. See above for fan slitting

3. See above for CPU fan feebback to MoBo to insure fan spinning


NOT having a mass of unwanted cables is the joy of a expensive, fully modular PSU.
Click to expand...

And how is that in any way different from hybrid modular since they have the same number of cables in the build ... other than the extra cost and other items described in above link ?

 
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axlrose

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Sorry for my duplicity, but I need to clear it up.

I have a jpwr2 connection in the upper left hand part of the board. I asked about this on another thread as I didn't recognize the name and they said it was for overclocking and not to even use it unless I had two powerful gpu's. I am reading here that it's an EPS. This appears to be what I connect to the motherboard from the CPU slot on my psu. My motherboard connection to the PSU is labeled Jpwr1.

Can I make sure I am finally understanding that this is the place I connect the psu labeled pc to the motherboard and that it is in fact necessary?
 
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