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Power Supply for Multiple Graphics Cards - Printable Version

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Power Supply for Multiple Graphics Cards - The_Joker - 02-20-2014

So I'm planning on investing in or building a mining rig sometime soon. I'm wondering if your average power supply has the proper connectors for 2 or more PCI express x16 cards. More specifically, can this one do it :


http://www.futureshop.ca/en-ca/product/coolmax-coolmax-600-watt-power-supply-vl-600b-vl-600b/10162556.aspx?path=7ff370d2fe6fb7e1fce35ef4f9f73c48en02

Edit: I will be mining multiple altcoins.


RE: Power Supply for Multiple Graphics Cards - TechSaavy - 02-20-2014

If you though about mining bitcoins, I would more recommend ASIC miners, as the difficulty for BitCoins is sky high and you may have some problems to get a good hash rate with GPUs.

If you decide to mine with your GPU, I recommend looking in to altcoins.
The power supply cables should not be a problem as you can buy splitters for the cables. The wattage may be a problem though if you will be running multiple GPUs at once and keep them running on 100%, you will put stress on the PSU.


RE: Power Supply for Multiple Graphics Cards - mig4ng - 02-21-2014

for gpu mine litecoins or dogecoins only, don't try to mine btc with gpu. Yet this is not the topic of this thread, for PSU I can't really recommend anything because I'm a hardware newbie xD


RE: Power Supply for Multiple Graphics Cards - Nyx - 02-21-2014

To answer your question since these guys are going on about mining, I don't think that one can because from the looks of the features, it only has one PCI-E six pin connector. I think you would have to pick up a semi/fully modular power supply so you can have multiple connectors. Though don't take just my word on it, I suggest waiting for some more input before making a decision. Also, I am not quite sure 600W will cut it unless you are using weak GPUs like 2 GTX 750 Tis, just a little side note.


RE: Power Supply for Multiple Graphics Cards - The_Joker - 02-21-2014

(02-21-2014, 02:31 AM)Atmosphere Wrote: To answer your question since these guys are going on about mining, I don't think that one can because from the looks of the features, it only has one PCI-E six pin connector. I think you would have to pick up a semi/fully modular power supply so you can have multiple connectors. Though don't take just my word on it, I suggest waiting for some more input before making a decision. Also, I am not quite sure 600W will cut it unless you are using weak GPUs like 2 GTX 750 Tis, just a little side note.

How does power supply to the cards actually work? PSU-> mobo-> card or PSU->card? If PSU to card, what cables are needed? Why is a modular PSU better?


RE: Power Supply for Multiple Graphics Cards - Nyx - 02-22-2014

(02-21-2014, 01:59 PM)The_Joker Wrote: How does power supply to the cards actually work? PSU-> mobo-> card or PSU->card? If PSU to card, what cables are needed? Why is a modular PSU better?

How power works for graphics cards:
When it comes to GPUs, most modern graphics cards have a spot on them where you have to plug in a PCI-E PSU cable. In my GTX 780 Ti's case, I have to plug in 2 PCI-E cables. Some cards (very rare in modern cards) such as the GTX 750 don't actually require you to plug in a a connector, and the power actually just comes from the PCI-E slot.

Why a modular PSU is better:
Because with a modular, you can plug in the cables you need, with a regular PSU you have a cluster of cables that sometimes aren't even needed, but with a modular, you plug in the cables yourself so you can plug in only what you need, so if you need more PCI-E cables you can add that.

If you have an further questions feel free to shoot me a PM.