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Old January 3, 2011, 06:37 AM
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Default Seasonic M12D 850W Rail Configuration

I recently bought the Seasonic M12D 850W, but this PSU is a dual rail design and there is no label or manual telling me which output is connected to which rail. I tried to search on review and there is no indication which connector isl inked to which rail. Can someone let me know which PCI-E is connected to the first rail and which PCI-E is connected to second rail? Thanks in advance!
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Old January 3, 2011, 08:47 AM
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Here you go. Straight from here.

Quote:
Originally Posted by JonnyGURU


I promised an up close shot of the modular panel, and here it is. The rail distribution is a bit funky on this, but Seasonic was kind enough to enlighten me. From left to right in the above picture, the connectors are: 12V1, 12V1, 12V2, 12V2, 12V1, 12V2. This means that the PATA/SATA connectors are evenly divided between the two 12V rails, as are the PCI-E connectors. The hardwired cables are similarly divided - 12V2 for the EPS12V and ATX12V cables and one of the PCI-E cables, with everything else on 12V1.
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Old January 3, 2011, 09:23 AM
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Thanks! However for the hardwired cables, it says ONE of the PCI-E cables is on 12V2, do you know which one is on 12V2 and which one is on 12V1. I want to distribute the two PCI-E onto both rail.
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Old January 3, 2011, 09:54 AM
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Could you tell us what your build is? I'm not sure which is which, but honestly it shouldn't matter too much if you're running a "usual" build with one GPU. This should help me out.
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Old January 3, 2011, 10:05 AM
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maybe my memory's fuzzy, but didnt that psu behave as a one rail unit in the end? :)
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Old January 3, 2011, 11:25 AM
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Quote:
Originally Posted by _dangtx_ View Post
maybe my memory's fuzzy, but didnt that psu behave as a one rail unit in the end? :)
It pretty much does, like most of the S12D/M12D lineup. All they really did was split a single rail unit into 2 rails and added 2 separate OCPs, one on each rail. In the end you get a single rail unit performance wise.
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Old January 3, 2011, 11:34 AM
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thanks. ive used plenty in me builds, builds for people and didnt really run into rail splitting issues even with higher end cf/sli setups.
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Old January 3, 2011, 05:47 PM
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I'm running
i7 970 @ 4.0 ht off
gtx 480
1 5400 rpm hdd and 1 intel ssd
and about 8 fans
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Old January 3, 2011, 05:57 PM
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With a setup like that you won't run into any issues at all. I would run your setup according to however well you can get your cabling to be :).

On a side note, I do believe I remember hearing the the M12D was actually single rail.
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