Zarathustra[H]
Extremely [H]
- Joined
- Oct 29, 2000
- Messages
- 38,938
So we've known for some time that you can either cut/melt out the back of a smaller PCIe slot or cut off the leads on the video card so it will fit, resulting in the cards working in an x8 slot.
Usually this is done with video cards that use an PCIe power connector to pull their power, resulting in no power being pulled from the motherboard.
I was planning on doing this with a couple of Quadro 2000 video cards in a server motherboard.
The thing with the Quadro 2000 is that it doesn't have a PCIe power connector, and instead pulls all of its power from the motherboard, all 62w of it under load.
I just realized that PCIe x8 slots officially per the PCIe specification only provide 25W of power. (PCIe x1 slots only provide 10w). The full x16 slots provide 75 watt.
I'm guessing there is a risk of a problem here if the video cards pull too much power over the 8x slot, depending on how the motherboard is designed, if they overprovisioned the power to the 8x slots at all.
Does anyone have any thoughts about this?
I only plan on using them for video playback at 1080p, so I may not even ever hit the 25w limitation of x8.
Does anyone have any thoughts regarding this?
Much Obliged,
Matt
Usually this is done with video cards that use an PCIe power connector to pull their power, resulting in no power being pulled from the motherboard.
I was planning on doing this with a couple of Quadro 2000 video cards in a server motherboard.
The thing with the Quadro 2000 is that it doesn't have a PCIe power connector, and instead pulls all of its power from the motherboard, all 62w of it under load.
I just realized that PCIe x8 slots officially per the PCIe specification only provide 25W of power. (PCIe x1 slots only provide 10w). The full x16 slots provide 75 watt.
I'm guessing there is a risk of a problem here if the video cards pull too much power over the 8x slot, depending on how the motherboard is designed, if they overprovisioned the power to the 8x slots at all.
Does anyone have any thoughts about this?
I only plan on using them for video playback at 1080p, so I may not even ever hit the 25w limitation of x8.
Does anyone have any thoughts regarding this?
Much Obliged,
Matt