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3080 FTW3 aRGB header device limit?

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Lucas McCain
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2020/10/26 09:03:15 (permalink)
Hello all,
 
I got my 3080 over the weekend, and I'm enjoying it immensely. I don't have an aRGB header on my motherboard, so I plugged the aRGB devices I have into the header on my card instead of the controller that came with my case. This works wonderfully, but makes me want to replace the last few fans I have that are not aRGB with some that are. However, I certainly don't want to overload this header and damage my card.
 
What is the limit for the number of devices I can have attached to the aRGB header on the card?
 
I currently have two case fans, as well as two LED strips that are daisy chained. I would like to add 3 more fans if possible.
 
This is my first foray into aRGB, so I'm still learning. Eventually, I'll get a new CPU/MOBO, and it should be less of an issue, I suppose. I'm just not ready to do so ATM. Thanks.
post edited by Lucas McCain - 2020/10/26 12:55:47
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    Sajin
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    Re: 3080 FTW3 aRGB header device limit? 2020/10/26 17:24:54 (permalink)
    Probably limited to two amps on that header. Best to contact evga to confirm though.

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    Dabadger84
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    Re: 3080 FTW3 aRGB header device limit? 2020/10/26 18:16:48 (permalink)
    Does the aRGB plug system even pull any power, I thought all the fan power comes from the power plug, and the aRGB cord is simple for telling things what to do in terms of lighting.  Could be wrong though, I'm still new at the whole RGB thing relatively speaking.
    I would definitely give eVGA Customer Support a call & verify it before you stick more things on it, just to be on the safe side.
    I just noticed the aRGB header on the card today & went "Oh neat" since I'm transitioning from Thermaltake controllers for most of my fans to some EK aRGB fans that use the 5V headers, as I'm getting a CPU open loop setup from them relatively soon.
    I would say, don't plug any fans in to the fan header itself on the GPU if you can avoid it, this counts against the power limit of the card as far as I know, and could result in lower than expected performance, if you're overclocking, it will thereby reduce your headroom... if you're running at stock, that should not be an issue though, as the card doesn't routinely tickle the Power Limit at stock.

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    Lucas McCain
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    Re: 3080 FTW3 aRGB header device limit? 2020/10/27 09:19:07 (permalink)
    Thanks for the replies. I took your advice and contacted support to be on the safe side.
     
    As far as I can figure out, aRGB headers are 5V 3A connectors. The RGB portion of fans are usually about 0.2A-0.3A. Even with 7 devices connected, I should be maxing out at 2.1A. Electricity is definitely not something I know about, but it seems like I'd be okay? I'll wait until I hear back from support, but if necessary, I have now found some aRGB hubs that support 7 devices and are SATA powered, just using the header for control, not power.
     
    This stuff is still confusing as all get out to me, but I feel like I'm making progress. Thanks again for your help, and I'll post here again when I get an answer from support.
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    Lucas McCain
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    Re: 3080 FTW3 aRGB header device limit? 2020/10/29 12:58:03 (permalink)
    Support got back to me and said it's just designed for one device. It might be able to support splitters, but they didn't test it for that. Seems like kind of an odd answer. I'm going to get a powered hub, just to be safe. That way I can just use the header for input, not power.
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