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Can I Powering a GPU With 1 Or 2 Cables from the PSU?

Last Updated on November 20, 2022 by Tech Questions

You’ve probably heard of people powering their GPUs with one or two cables from the PSU. Can you do this? The answer is yes, but there are some things to keep in mind.

First of all, your GPU will need its own power connector from the PSU. This is because the GPU uses a lot of power and needs its own dedicated line. Secondly, if you’re using a two-pin connector, make sure that it’s plugged into the right spot on the motherboard.

If not, you could risk damaging your motherboard or causing a short circuit.

  • Find your graphics card’s power requirements
  • You can typically find this information on the manufacturer’s website or in the documentation that came with your card
  • Choose a PSU that can provide enough power to meet your card’s requirements
  • Make sure to factor in the other components in your system when selecting a PSU, as they will also add to the overall power draw
  • Connect one or two cables from the PSU to the graphics card
  • The number of cables required will depend on the specific card and PSU you’re using, so be sure to check your documentation for details
  • Once everything is connected, turn on your computer and enjoy enhanced graphics performance!

Can Power cables affect GPU performance?

Can I Use a Split Power Cable for GPU?

You can use a split power cable for GPU if you have the right cables and adapters. The main thing you need to check is that your PSU has the right connectors for your graphics card. If it doesn’t, you can buy an adapter or replace the PSU.

Most PSUs come with two types of PCIe power connectors: 6+2 pin and 8 pin. A 6+2 pin connector can be used as an 8 pin connector, but an 8 pin connector cannot be used as a 6+2 pin connector. You need to make sure that your PSU has the right type of connector for your graphics card.

If your graphics card needs more than 75 watts of power, you will need to use a dual PCIe power cable. This looks like two 8 pin connectors connected together with a Y-shaped cable. Dual PCIe power cables are not compatible with all PSUs, so you will need to check compatibility before buying one.

Do I Need Both 8 Pin GPU Power Connector?

When it comes to graphics cards, there are a few different types of power connectors that are used. The most common type is the 8 pin GPU power connector. This is the type of connector that is found on most graphics cards.

However, there are also 6 pin and 4 pin versions of this connector. So, which one do you need? The answer to this question depends on a few factors.

First, you need to check what kind of power supply your graphics card needs. Some cards require an 8 pin connector, while others may only need a 6 pin or even a 4 pin connector. Second, you need to check what kind of power supply you have available.

If you only have a 6 pin power supply available, then you will need to use an adaptor in order to connect your 8 pin GPU to the power supply. In general, it is best to use the highest quality power connector that your graphics card requires in order to get the best performance possible from your card.

Can I Use a Split PCIe Cable for GPU?

No, you cannot use a split PCIe cable for GPU. The reason being is that GPUs require a lot of power and need to be able to draw that power from the PCIe bus. A split PCIe cable would not be able to provide enough power to the GPU and would likely cause instability or even damage the GPU.

Should I Use Two PCIe Cables for GPU Reddit?

If you have a graphics card that requires two PCIe cables, then the answer is yes – you should use two PCIe cables for your GPU. This will ensure that your graphics card has enough power to run properly, and it will also help to improve performance. There are a few things to keep in mind when using two PCIe cables for your GPU, though.

First, make sure that both of the PCIe slots on your motherboard are identical – they should be the same size and have the same number of lanes. If they’re not, then you may run into problems. Second, if you’re using an SLI or CrossFire setup with multiple graphics cards, then you’ll need to use multiple PCIe cables for each card (most GPUs will require two cables).

Finally, remember to route the cables so that they don’t interfere with each other or any other components in your system. Using two PCIe cables for your GPU is generally advisable if your graphics card requires it. Doing so will help to ensure that your card has enough power and can perform at its best.

Just be sure to check compatibility with your motherboard and take care when routing the cables.

Can I Powering a Gpu With 1 Or 2 Cables from the Psu?

2 Separate Cables for GPU 3070

If you’re looking to get the most out of your new Nvidia RTX 3070 graphics card, you’ll want to make sure you have the right cables. That means two things: first, that you have a cable that can handle the high bandwidth required for 4K and HDR gaming; and second, that you have a second cable for any overclocking or other tweaks you might want to make. Let’s start with the first cable.

The RTX 3070 is capable of some serious 4K gaming performance, but only if it’s properly connected. That means using a DisplayPort 1.4 cable, which can handle up to 8K resolution at 60Hz or 4K at 144Hz. If you don’t have a DisplayPort 1.4 cable, your best bet is to pick one up from an online retailer like Amazon or Monoprice.

As for the second cable, this is where things get a bit more flexible. If you’re not planning on doing any serious overclocking or other tinkering with your RTX 3070, then any old PCIe 3.0 x16 cable will suffice. However, if you are planning on doing some overclocking, then you’ll need a special high-speed PCIe 3.0 x16 cable that can handle the increased bandwidth requirements.

These cables are available from various online retailers; just be sure to get one that’s long enough to reach from your graphics card to your motherboard’s PCIe slot (most cards are around 11 inches long). So there you have it: two separate cables for maximum performance from your RTX 3070 graphics card!

2 Separate Cables for GPU 3080

As the release of Nvidia’s new line of GPUs approaches, more and more information is becoming available about them. One of the most interesting pieces of information to come out is that the 3080 will require two 8-pin power connectors instead of the one 12-pin connector that was previously rumored. This means that the 3080 will require a total of 375 watts of power, which is 150 watts more than the 2080 Ti.

It’s also worth noting that this isn’t simply an increase in power draw, as the 2080 Ti only required one 8-pin connector. The additional pin on the 3080’s connector is likely for voltage regulation purposes. The fact that the 3080 will require two 8-pin connectors means that it will be significantly more powerful than its predecessor.

This also begs the question: why didn’t Nvidia just make a 12-pin connector for this GPU? The answer likely has to do with costs and efficiency. Making a 12-pin connector would have been more expensive and wouldn’t have provided any real benefit over using two 8-pin connectors.

So, if you’re planning on picking up a 3080 when they launch, be sure to have two 8-pin PCIe power cables handy!

Can I Use 6+2 Pin for 8 Pin GPU?

As far as using a 6+2 pin for an 8 pin GPU is concerned, the answer is unfortunately no. Even though both types of connectors have the same amount of pins, they are not compatible with each other. This is because the two types of connectors serve different purposes.

The 6+2 pin connector is primarily used for powering PCIe devices, while the 8 pin connector is used for both PCIe and server-level power supplies. As such, using a 6+2 pin connector on an 8 pin GPU would not work and could potentially damage your equipment.


If you’re wondering whether you can power a GPU with one or two cables from the PSU, the answer is yes! However, it’s important to note that there may be some trade-offs in terms of performance. For example, if you’re using a single cable to power your GPU, you may not be able to get the full performance out of it.

Additionally, using two cables can help to ensure that your GPU is getting enough power and isn’t being throttled.