How many risers per molex?

Asked by: Brandon Weber
Score: 4.2/5 (67 votes)

Both sata and molex cables can support no more than two risers per string of cable, regardless of how many sata/molex connections are present on said cable. This is a limitation of the wiring inside the cable itself, the PSU does not enforce this limitation in any way.

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Also, Can I power PCIe risers with Molex?

PCIe risers and adapters do not conform to ATX standards. Using these types of adapters can result in damage to any system components. The ATX standard for SATA or Molex connections is rated for 54 watts. ... 12 volts, times 4.5 amps, equals 54 watts able to be provided by a SATA/Molex connector.

In this regard, How many watts do risers use?. As mentioned on our detailed discussion on riser cards the PCIe slot uses both 12V and 3.3V power. The PCIe spec specifies a max of 3 Amps of 3.3V power and 5.5 Amps of 12V power. That translates to 66 Watts of 12V power and 9.9 Watts of 3.3V power.

Then, Which riser is the best riser?

We've rounded up some of the best risers out there.
  • PCIe 4 Riser: LINKUP Ultra PCIe 4.0 x16 Riser Cable.
  • Value Riser: Thermaltake TT Gaming PCIe 3.0 x16 Riser Cable.
  • Crypto Miner Riser: LTERIVER PCIe 3.0 x16 Riser Cable VER006C.
  • Crypto Miner Riser: Timack PCIe 3.0 x1 Riser Cable.


What is the difference between riser and plenum cable?

Plenum rated cables have a higher fire rating for both commercial and residential use. When cables are needed in the air ducts, plenum cables are the primary choice. Riser cables, namely CMR cables, are widely used for regular networking from floor to floor in non-plenum areas.

37 related questions found

What is the best GPU riser for mining?

Best Overall: Ubit 6-pin/MOLEX/SATA PCI-E Riser Cable. Judging by hundreds of positive customer reviews, the Ubit PCI-E Riser Cable is one of the best GPU riser cables for cryptocurrency mining.

Is it safe to power riser with SATA?

but don't worry, you can use SATA for powering your riser because your riser power will be combining with PCIe Power to handle your GPUs. But, don't use more than 2 SATA connector from one rail, it will be safe.

Is it safe to use Molex to 6-pin?

not really no. If it doesn't come with a 6-pin, it can't properly provide the power a 6-pin needs.

Does GPU riser affect performance?

The riser probably does affect performance a bit. 3700 vs 3800 is only like 2%, so in the grand scheme of gaming if you were getting 90FPS in a game before, with the riser you'd get 2% less, so 1.8 less FPS, or 88.2 FPS. No real difference you'd see.

How many risers are needed for a PCIe cable?

Avoid SATA connections, the best cards now use 6 pin PCie connectors for the risers and these can be split with Y's from normal PCIe connections. Directly plugging in molex connectors is OK too, but no more than two risers per cable from from the PSU. avoid all the adapter cables, avoid SATA and you'll be generally OK.

What does a PCIe Riser do?

In small-form-factor (SFF) computers built by computer enthusiasts, PCI-E Riser Cards are used in a similar sense to a server application. They are used to sandwich a graphics card closer to a computer motherboard and are made to the same heights as server units for most applications.

How much power does a motherboard draw?

Your motherboard probably uses 50 to 150 watts, and each stick of memory requires about 15 watts. The processor needs between 80 and 140 watts of power.

Is it safe to use SATA to 6 pin?

If you are trying to use a SATA power to 6-pin PCI-e adapter to power a GPU, is not a good idea. Your PSU does not have 6-pin PCI-e because is not able to deliver the power (AMPs or voltage or both) a GPU needs. You could cause damage the PSU or the GPU or both.

How much power can a PCIe x16 slot provide?

The PCI Express* x16 connector on Intel® Desktop Boards can deliver only up to 75 watts. These graphics cards can be powered by just the PCI Express x16 connector on the desktop board.

Can you convert Molex to SATA?

Another option is to use a molex to SATA adapter cable. By going this route, you won't need to worry about swapping out your power supply. Instead, all you need to do is plug the adapter into your PSU. Then plug your hard drive into the other end, and you're good to go.

Can I use 2 Molex to power GPU?

Yes, using an adapter is safe. From personal experience I didn't have the correct PCI-E cable so I had to get an 8-pin adapter to power up my MSI GTX 970. Works fine.

Is Molex better than SATA?

Champion. Technically Molex can carry much more power than the SATA power connector. Molex has 2 power pins (one 5V and on 12V pin), each can deliver 11Amps for a total of 22Amps.

Can you use a 6-pin on a 8-pin GPU?

Product Description. The Cable Matters 6-Pin PCI to 8-pin Adapter Power Cable provides a convenient solution for powering a video graphics card from a PSU with only a 6-PIn PCIe power connection. Power a new video graphics card with an existing 6-pin PCIe power connection on your PSU.

Is it safe to use a PCIe splitter?

I would amend this by saying don't use adaptors or splitters unless they came with your PSU or GPU. Generally those are included because the hardware is capable of handling them.

Do I need GPU riser?

Riser cards are very important as they can give you the flexibility you need to have. Since there are so many PCIe slots on your motherboard, it will be almost impossible to use all of them and might cause a lot of problems because of that.

Is plenum better than riser?

Because plenum cables are built to a higher fire resistance standard than riser cables, plenum cabling is more expensive than riser cabling. While you can substitute plenum cabling for riser cabling in a “riser” space, you cannot substitute riser rated cables for plenum rated cables in a plenum space.