Dimensions and motherboard support for HL15 Beast

Hardware
1

Considering the HL15 Beast for a new server build (vs fractal 7 XL), but I’m missing some key dimensions and stats. And I haven’t seen any hands-on review videos of these yet.
I notice support for EATX motherboards, but what are the exact dimensions? Are SSI-EEB or XL-ATX motherboards (eg: TRX40 Designare) supported? And I would normally assume at least 8 pcie slots, but the photos I’ve seen only show 7?
What length power supplies are supported?
What length GPUs are supported? Has anyone run server grade fanless GPUs in these? (eg: A100s,with 40mm server fan ducts attached in back) How about multiple 3090s?
Any radiator mounting options?
Thanks!

2

45HomeLab did confirm mounting compatibility with SSI-EEB boards in the post below.

3

Thanks for the great questions. I do not have the answers to all of them, but I’m going to let you know so we can get these answered.

Below are the answers I do have for you

  • I notice support for EATX motherboards, but what are the exact dimensions? Are SSI-EEB or XL-ATX motherboards (eg, TRX40 Designare) supported?

    • We have not tested these exact motherboards, but standard EATX will fit. (Corrected)

  • And I would normally assume at least 8 pcie slots, but the photos I’ve seen only show 7?

    • This would depend on the motherboard you choose. Currently, the Beast has 2 motherboard options (ASROCK ROMED8-2T and Asus ProArt X870E-CREATOR WIFI)
      • ASROCK ROMED8-2T has 7 PCIe slots
      • Asus ProArt X870E-CREATOR WIFI has 3 PCIe slots
      • You can also get the chassis only and put in your own motherboard if you need more than 7 pcie slots.

  • What length power supplies are supported?

    • It is designed around the Corsair RM1000x, which is 180mm in depth
    • 10 inches would be the absolute max you would be able to fit before hitting the power distribution board
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  • What length GPUs are supported?

  • Has anyone run server-grade fanless GPUs in these? (e.g., A100S, with 40mm server fan ducts attached in back)

    • Unsure, as we have not tested with these exact GPUs before

  • How about multiple 3090s?

    • We have tested a wide range of GPUs in the Beast, and every card we tested fit without issues.

  • Any radiator mounting options?

    • There are no official mounting options for radiators, but you could mount a radiator in place of the 2 140mm fans. Just note that this will decrease the room for a larger GPU
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4

The TRX40 is 325 mm wide side-to-side, compared to ATX width of 305 mm. (Defining IO as “back”). I’m not sure 325mm will fit? Effectively it needs 8 slot’s worth of PCIe width and it uses slots 2 through 8. Also, even if it did, the question is how someone intends to use the edge-most slot. If they want to put a 2-slot wide GPU there then even if the board physically fit, the case has no space for overhanging GPUs.

5

I have installed an Asrock Rack ROME2D16-2T Motherboard in mine and it fits fine. Only issue I had was that one of the motherboard standoff points wasn’t there for the board. This can be easily rectified with a small 3 printed standoff and some glue or purchasing standoffs online.

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Thanks, ive corrected my answer