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Can I Powering Two GPUs on One PCIe Cable?

Last Updated on November 18, 2022 by Tech Questions

There are a few things to consider when attempting to power two GPUs on one PCIe cable. The most important factor is the amount of power that your PSU can provide. If your PSU can’t provide enough power, then you won’t be able to run both GPUs at full capacity.

Another thing to keep in mind is the length of the PCIe cable. A longer cable may not be able to provide enough power for both GPUs. Finally, you need to make sure that both GPUs are compatible with each other.

If one GPU is significantly higher end than the other, it may not work properly when paired together.

  • Find a PCIe cable that is compatible with your GPU model and PC
  • Connect one end of the PCIe cable to the primary GPU (GPU0) and the other end to the secondary GPU (GPU1)
  • Make sure that both GPUs are properly seated in their PCI slots and that all connections are secure
  • Power on your PC and boot into your operating system
  • Open the NVIDIA Control Panel and go to the “Display” tab
  • Under “Multiple Displays,” select “Extend my desktop to this display ” This will enable both GPUs to be used for display purposes

Can Power cables affect GPU performance?

How Much Power Can a PCIe Cable Provide?

A PCIe cable can provide up to 75 watts of power. This is more than enough power for most devices that use a PCIe connection, such as graphics cards and SSDs. However, some high-end devices may require more power, and so they may need to be connected to an external power source.

How Many Risers Can I Power With One PCIe Cable?

You can power up to six risers with one PCIe cable. This is because the PCIe cables have four pins that deliver power and the risers need two pins each.

Can You Power Two Graphics Cards?

Yes, you can power two graphics cards. There are a few things you need to take into account when doing this, however. Make sure your power supply is up to the task of powering two cards – if it’s not, you may run into stability issues.

You’ll also need to make sure that your motherboard has enough PCIe slots to accommodate two cards. Finally, if you’re looking to get the most out of your dual-card setup, you’ll want to make sure that both cards are of the same model and from the same manufacturer. This will allow you to take advantage of technologies like SLI or CrossFireX which can boost performance in games and other applications.

Can You Daisy Chain GPU?

Yes, you can daisy chain GPUs. This means that you can connect multiple GPUs together in a chain so that they can share the load of processing data. This can be useful if you have a heavy workload that requires a lot of processing power and you want to distribute the workload across multiple GPUs.

Daisy chaining can also be used to increase the frame rate in certain applications, such as video editing or gaming.

Can I Powering Two Gpus on One Pcie Cable?

Power Supply With 2 8 Pin GPU Connectors

Most power supplies come with either one 8-pin or two 4-pin GPU connectors, but there are a few models that come with two 8-pin connectors. This is important to know because if you have a high-end graphics card that requires two 8-pin power connectors, you’ll need to make sure your power supply can accommodate it. There are a few benefits of having a power supply with two 8-pin GPU connectors.

First, it provides more stability and reliability for your system since there’s no need to daisy chain the connections. Second, it allows for better overclocking potential since there’s more power available to the graphics card. And lastly, it just looks nicer and tidier overall!

If you’re looking for a quality power supply with two 8-pin GPU connectors, we recommend checking out the Corsair RM1000i or the EVGA SuperNOVA 1000 G3. Both of these models are fully modular and come with plenty of other great features like 80+ Gold certification and quiet operation.

2 Separate Cables for GPU 3070

There are a few things you need to know in order to properly utilize dual cables for your new RTX 3070. First, each cable must be plugged into a different power connector on the graphics card. You’ll also need two PCI Express slots- one for each cable.

Most importantly, though, is that you need to have a monitor that supports DisplayPort 1.4 in order to take full advantage of the capabilities of this setup. If you have all of those things squared away, you’re ready to enjoy some serious performance gains over a single cabled connection. With dual cables, you can expect up to 25% more performance from your RTX 3070 than with a single cable.

That’s an impressive boost, and it’s well worth the effort of getting everything set up correctly. So if you’re looking to get the most out of your new RTX 3070, consider running two separate cables to get the best possible performance.

Can I Use One PCIe Cable for Two GPUs?

If you’ve ever wondered if you can use one PCIe cable for two GPUs, the answer is yes! You can absolutely use one PCIe cable for two GPUs, and in fact, it’s a pretty common setup. There are a few things to keep in mind, however.

First off, you’ll need to make sure that your PSU can handle the power requirements of both GPUs. Secondly, you’ll need to have a motherboard with enough PCIe slots to accommodate both cards. And finally, you’ll need to use a SLI or CrossFire bridge to connect the two cards together.

But other than that, it’s pretty straightforward! Now that we’ve got that out of the way, let’s talk about how this actually works. Essentially, when you plug in one PCIe cable into two GPUs, each GPU will get its own dedicated lane of PCI Express connectivity.

This means that each GPU will be able to reach its full potential without being bottlenecked by the other card. In terms of performance, you can expect around a 20-30% increase over using just one GPU. Not too shabby!

So there you have it! Now you know that yes, you can use one PCIe cable for two GPUs without any issues whatsoever. Just remember to check your power requirements and make sure you have enough slots on your motherboard before getting started.

Otherwise, enjoy the boosted performance!


Are you looking to add a second GPU to your gaming PC? You may be wondering if one PCIe cable can power both cards. The answer is yes, as long as your power supply is up to the task.

Your power supply must have enough wattage to support two GPUs. Most high-end graphics cards require at least a 500W PSU. If you’re not sure how much wattage your PSU has, check the label on the side of the unit.

Once you’ve confirmed that your PSU can handle the additional load, connect one end of the PCIe cable to the first GPU and the other end to the second GPU. That’s all there is to it! Your computer should now be able to take advantage of both GPUs for improved gaming performance.