Best PCIe 4.0 Riser Cables [2023 Guide]

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Ever wondered how gamers manage to expand and optimize their setups with multiple graphics cards? The secret often lies in a small but mighty component: the PCIe riser cable.

This crucial piece of tech allows users to connect their graphics cards to the motherboard in a more flexible manner, making it easier to arrange components and improve airflow.

Join us as we walk you through the best PCIe riser cables that have passed our rigorous hands-on tests, ensuring you get the most bang for your buck.

Key Takeaways:

  • Best Overall: Corsair Premium – Hands down, one of the best in terms of quality, performance. Featuring a 90-degree bend, it’s perfect for tight spaces.
  • Best Runner-Up: Thermaltake TT Premium – Another high-end PCIe riser cable from a reputable brand, that’s only $10 more than the Corsair, but similar in most ways.
  • Best Budget: Qingsea – At half the price of the name brands, you might expect junk, but it’s not. This is a great, well-made cable with space between the ribbons for improved airflow.
  • Need some help? Check our FAQs section for answers to some of the most commonly asked questions regarding PCIe cables and their characteristics. Also, be sure to learn the differences between PCIe 3.0 and 4.0.

Reasons to Use a PCIe Riser Cable

  • Vertical GPU Mounting: These cables are essential for vertical graphics card mounting, a popular choice for showcasing high-end GPUs.
  • Space Management: In compact PC cases, they provide the flexibility to position large components such as multiple graphics cards.
  • Improved Airflow: They’re as thin as possible in order to necessitate for proper heat dissipating and cooling. Perfect for using with one of the best PWM fan controllers.
  • Aesthetic Enhancement: For custom PC builders prioritizing appearance, riser cables help achieve a cleaner, more organized look inside the case.
  • Ease of Access: Riser cables make swapping out components easier, especially in tight spaces, reducing the need to disassemble other parts of the system.

Differences Between PCIe 3.0 vs. 4.0

FeaturePCIe 3.0PCIe 4.0
Data Rate (per lane per direction)8 GT/s (Gigatransfers per second)16 GT/s
Maximum Bandwidth (per lane per direction)~1 GB/s~2 GB/s
Maximum Bandwidth (x16 link)~15.75 GB/s~31.51 GB/s
Encoding Scheme128b/130b128b/130b
Max Throughput (x16 link)126.032 Gbit/s252.064 Gbit/s
LatencySimilar to previous generationsSimilar to previous generations
Backward CompatibilityWith PCIe 2.0 and PCIe 1.0With PCIe 3.0, 2.0, and 1.0
Forward Error Correction (FEC)NoYes
Link Layer Retry MechanismYesEnhanced
Number of Lanes1, 4, 8, 161, 4, 8, 16

Best Overall: Corsair Premium PCIe 4.0 x16 Extension Cable

Corsair Premium PCIe 4 x16 Extension Cable

Key Takeaways:

  • Top-notch build from a reputable brand.
  • Benchmarks are the same as if the graphics card was directly plugged-into the motherboard.
  • Extended 300mm length for easy vertical GPU installation.
  • EMI shielded, ensuring undisturbed GPU performance.

When we got our hands on the Corsair Premium PCIe 4.0 x16 Extension Cable, the first thing we noticed was its top-notch build quality. It felt robust and well-made, truly living up to Corsair’s reputation as a top-tier brand.

Imagine the superhighway of tech – this cable offers an impressive PCIe 4.0 bandwidth. That means your GPU gets a whopping 64GB/sec, which is a game-changer for performance!

Corsair Premium PCIe 4 x16 Extension Cable

In fact, our testing with a RTX 2070 graphics card showed the same benchmark results regardless of if the graphics card was extended using the cable, or mounted directly into the motherboard.

But it’s not just about speed. The cable’s extended length of 300mm is ideal. We could easily install our GPU vertically in various cases without any fuss. This is an ideal length for most custom setups.

And guess what? The cable is even EMI shielded. In simple words, it protects against pesky signal disruptions, ensuring that your GPU works at its best. Not once did we discover any interference.

Corsair-Premium-PCIe-4 extension riser cable

We also loved the 90° female PCIe connector. It felt like a thoughtful touch, reducing cable strain and making vertical GPU fitting a breeze. This sets it apart from the average cable by allowing it to conform to a tight space with ease.

After our hands-on experience, we can confidently say that the Corsair is a must-have for anyone serious about quality. While it does come at a steep price than your run-of-the-mill cable, we think it’s totally worth it. You’re getting a top of the line quality cable with a brand name that’s well-known for their integrity.

Best Alternative: Thermaltake TT Premium PCI-E 4.0 Extender Riser Cable

Thermaltake TT Premium PCI-E 4 Extender Riser Cable

Key Takeaways:

  • Incredibly similar to the Corsair.
  • Identical benchmark results as if the graphics card was plugged into the motherboard.
  • Excellent build quality with extra material for rigidness around each connector.
  • Available in both 300mm and 600mm lengths.
  • EMI shielding works well.

Another great option is the Thermaltake TT Premium PCIe Riser Cable. It utilizes the same gold standard PCIe 4.0 version 64GB/sec. Right away, we noticed it bore a striking resemblance to the Corsair model we first looked at.

Most importantly, benchmarking results shows same readings whether the RTX 2070 graphics card we tested it with was directly on the board or in the extension.


Its ribbonized format flat cable design was both flexible and rigid. We could easily snake it around other components without a hitch. Pressing it into the motherboard felt stiff, firm and gave us confidence that it was tightly in the proper position.

The flexibility was perfect. Especially when we had to navigate through tight corners in the case. Yet, it stayed rigid, not flopping around.

The EMI Shielding with Conducting Polymer on this cable, much like the Corsair, was a nice inclusion. It eliminated any interference without static. There was no interference when we tested it on 4 different custom PC builds.


Like the Corsair, it’s 300mm in length was ideal. But luckily, it’s also available in a 600mm length if you find that you need double the length with twice the reach.

While it does cost around $10 more than the Corsair, the main difference is that it doesn’t have a 90-degree bend for one of the connectors. It’s a more-traditional variety that some may prefer. If you’re a fanboy of Thermaltake and prefer their products over Corsair, this is the perfect alternative.

Best Budget: Qingsea PCIe Riser Extension Cable

Qingsea PCIe Riser Extension Cable

Key Takeaways:

  • Budget-friendly, half the price of premium brands.
  • 90-degree bend for vertical GPU mounting.
  • Three flat cables promote excellent airflow.
  • Benchmark tests prove no degradation in speed.
  • EMI-shielded for interference-free performance.

When we got our hands on the Qingsea PCIe Riser Extension Cable, we were curious to see how it would perform. Especially compared to the more expensive options we’ve tried before. Right away, we noticed the price was significantly lower, almost half of what you would pay for the Corsair or Thermaltake. For budget-conscious PC builders, it’s an attractive choice.

Like the Corsair, the Qingsea riser cable features a 90-degree bend, making it a breeze to connect to vertically mounted graphics cards. The cable itself is uniquely comprised of three flat ribbonized cables, spaced nearly 1cm apart. This design naturally promotes good airflow within the PC case, helping to keep temperatures down.


The cable is 250mm in length, slightly shorter than the Thermaltake and Corsair options, but we found it to be adequate for most scenarios. We didn’t run into any issues with reach or flexibility during installation.

One of the highlights of the Qingsea riser cable is its quality hand-soldered gold-plated contacts. These ensure signal integrity and stable high-speed transmission. We ran benchmark tests to see if there was any degradation in speed when using the cable compared to when our RTX 2070 graphics card was directly plugged into the motherboard, and the results were reassuring. There was no noticeable difference in performance, proving that the Qingsea cable can hold its own in terms of speed and reliability.


The EMI shielding on the Qingsea cable is on par with the more expensive options, providing excellent interference resistance. We experienced zero interference during our testing, which is always a good sign. In addition, we noticed extra material around the end of each ribbon cable where it’s soldered. This clearly provides extra durability and protection against wear and tear.

All in all, the Qingsea PCIe Riser Extension Cable proved to be a reliable, budget-friendly option. It might not carry the name brand trust of Corsair or Thermaltake, but it delivers where it counts. A great choice for those who need a decent cable without breaking the bank.

PCIe Riser Cables FAQs

What is a PCIe 4.0 riser cable?

  • A PCIe 4.0 riser cable is a flexible extension that connects a motherboard to a PCIe 4.0-compatible device, typically a graphics card, allowing for flexible placement within a PC case.

Why should I use a PCIe 4.0 riser cable?

  • Using a PCIe 4.0 riser cable is beneficial for small or compact PC builds, improving airflow, enabling vertical GPU mounting, and aiding in creating a cleaner aesthetic inside the case.

Is there a performance difference using a riser cable?

  • Quality PCIe 4.0 riser cables are designed to provide the same performance as direct motherboard connections. However, low-quality cables can potentially cause signal degradation and affect performance. All of the options in this article proved to not alter performance based on our benchmark tests.

How do I install a PCIe 4.0 riser cable?

  • Installation involves connecting one end of the riser cable to the motherboard’s PCIe slot and the other end to the PCIe device. Ensure a secure connection and proper cable routing to avoid damage.

Can I use a PCIe 4.0 riser cable with older devices?

  • Yes, PCIe 4.0 riser cables are backward compatible with PCIe 3.0 and earlier devices, though they will operate at the lower device’s maximum speed.

2 thoughts on “Best PCIe 4.0 Riser Cables [2023 Guide]”

  1. Thanks for the guide. I have a minor correction, though. Both silver and copper are better conductors than gold, and also cheaper than gold. Gold is used because it’s a stable metal. It doesn’t react with a lot of other elements, and therefore doesn’t easily tarnish, corrode, or otherwise degrade over time. This is why it’s enough for connectors to be gold plated, rather than having to use gold all the way through.

  2. TechGuru:

    Thank you for the article, and thank you even more for making it newbie-friendly! Too many other tech writers speak about / teach about their subject matter in a way that may leave your average newbie thinking they may not be smart enough to even hope to someday grasp the subject matter.

    I smiled when I noticed you picked the EZDIY riser as a top pick because I was literally just staring at that on Amazon wondering if I should buy it. I have only just recently heard that these gizmos exist, and I began paying closer attention and wanting to know more immediately following this string of infuriating failures to successfully pick a SLI bridge of proper size. I think now that I’ve had those setbacks I probably now have pretty good idea of my size requirement. However, if I had just known about these risers (I prefer “extenders” personally) there never would have been an issue since I obviously would have been able to move one card closer or farther to make the fit easy.

    BTW, you didn’t mention that these slot risers could take a lot of the headache out of making SLI work!


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