Whether you’re a gamer, a video editor, or just someone who makes heavy use of graphics-intensive applications, most likely, you’ve asked yourself the question: “Can I use two graphics cards in one PC?” Yes, it is possible.
However, plugging in a second card isn’t that simple, and there’s more to it than just enjoying the doubled performance. This blog will take you through what you may need to understand about using dual graphics cards in a computer, the positive aspects, the negative aspects, and then the technical requirements.
What Does It Exactly Mean to Have Two Graphics Cards?
Two or more graphics processing units on the same computer are just two graphics cards, sometimes called a multi-GPU configuration. Two GPUs work in tandem to render graphics, share tasks, and, in most instances, contribute to an increase in performance overall and know what graphics card I have.
There are two ways to connect multiple GPUs:
- SLI (Scalable Link Interface): It is a multi-GPU linking technology developed by NVIDIA. In this, a set of multiple GPUs share rendering graphics.
- CrossFire: This is the version of multi-GPU technology from AMD. Similar to SLI, CrossFire lets cards work together in order to have better performance.
Advantages of Using Two Graphics Cards
1. Better Performance
It is possible that when two GPUs work together, they will be able to perform more demanding tasks. Such can lead to smoother gameplay, faster rendering, and better graphics quality. To gamers, this would mean higher frame rates and ultra-settings for games.
2. Quality Graphics for Multi-Monitor Setups
If you have more than one monitor, the dual GPU configuration helps distribute the workload on the monitors. This is really cool for professional applications like video editing, 3D rendering, and graphic design.
3. Future-Proofing Your System
You can install another one as an additional setup that would extend the lifespan of your system. You won’t need to replace your card with a new one; you may just add another card to upgrade performance.
Disadvantages of Dual Graphics Cards
1. Law of Diminishing Returns
Two graphics cards are definitely going to make a difference in performance, but all such a difference is not doubled each time. You might even realize a 20-50% improvement.
All such improvements rely mainly on whether the best gaming motherboard or application supports the multi-GPU configuration.
2. Compatibility Problem
Most games and most software aren’t SLI or CrossFire. If it does not detect a second GPU, it won’t actually use it; thus, that second card is dead when it comes to its use in one application.
3. Increased Consumption of Power
It is a fact that two graphic cards consume twice as much power when compared to other hardware parts. You need an extra powerful PSU for the system. Also, it contributes to the expensive electricity bill
4. Generation of More Heat and Noise
Dual GPUs generate more heat, requiring better cooling solutions. This can also lead to increased fan noise, which might be distracting during gaming or work sessions.
5. Cost
High-end graphics cards are costly, and two of them are a pretty penny. You might also need to add other components, such as a stronger PSU, a larger case, or better cooling, which can add up.
What Do You Need for a Dual GPU Setup?
If you still want to use dual graphics cards, here’s what you’ll need:
1. Compatible Motherboard
Your motherboard must support SLI (for NVIDIA) or CrossFire (for AMD). Look for these terms in the motherboard’s specifications. Additionally, the motherboard should have enough PCIe slots for the GPUs.
2. Powerful PSU
Check the power requirements of both GPUs and ensure your PSU can support that. Target at least 750W or more, depending on the GPU’s specs.
3. Good Cooling
Two GPUs can produce a great deal of heat. Ensure the case has ample airflow, or install additional fans or liquid cooling.
4. SLI or CrossFire Bridge
You will find that some configurations need a physical bridge that will connect your two GPUs together. These bridges are provided with graphics cards or even the motherboard.
5. Space
Dual GPU setups require space. Check your PC case to ensure there’s enough room for both cards and proper ventilation.
6. Compatible Software
Your operating system and the programs you use must support multi-GPU setups. Windows 10 and 11 are compatible with SLI and CrossFire, but you should also check the specific software or games you’ll be using.
How to Install Two Graphics Cards?
If you meet all the conditions, here’s a general overview of how to install two GPUs.
- Shut down your PC. Unplug it. Safety precaution! Your PC must be entirely shut down and unplugged.
- Plug the GPUs into the PCIe slots of your motherboard. They have to be very well-connected
- Connect a bridge (if applicable). A bridge for SLI or CrossFire bridges needs to be attached between the two GPUs.
- Connect all of the power cables from the PSU to your GPUs.
- Replace your case: Close and ensure good airflow with proper cable management.
- Installation of drivers: Turn on and install the most updated drivers to your GPUs; you can get these from official websites either by NVIDIA or AMD.
- Multi-GPU Mode: From the control panel of the GPU of nvidia, whether that is NVIDIA Control Panel or AMD Radeon Software, enable SLI or CrossFire mode.
Alternative dual GPU configurations
If this dual GPU setup becomes too complicated or costly, there are two alternatives:
1. High-End Upgraded Single GPU
For everything except extremely demanding workloads, a current high-end GPU will be sufficient without requiring a second card. That is literally the most cost-effective and convenient upgrade of all.
2. Cloud Gaming or Rendering
Services like NVIDIA GeForce RTX 5080 Now or Amazon Web Services (AWS) offer cloud-based solutions for gaming and rendering. These services eliminate the need for multiple GPUs in your system.
3. Optimize Your Current Setup
Sometimes, tweaking your system settings or overclocking your existing GPU can provide a performance boost without additional hardware.
Conclusion:
The use of two graphics cards within one PC is an excellent way to improve performance. This can benefit both gamers and professionals who have a high requirement for graphics power.
However, it comes with its own challenges, such as increased costs, power consumption, and compatibility issues. So, before investing in a dual GPU setup, weigh the needs and determine whether the benefits are more significant than the drawbacks.
If you are willing to give it a try, ensure that the hardware and software will be compatible and that you have prepared to pay a good sum for a proper cooling and power solution. It may be much more practical and efficient for users to upgrade to a single powerful GPU.
The decision really depends on what your requirements and budget are. Whatever the case, knowing the pros and cons will help you make an informed decision. Polaris Mobility Solutions offers high quality computing solutions within budget, explore our website to increase your horizon of tech.
