I bought an Msi GeForce 2080 super 8g and have a nividia GeForce 1660 super. What power supply would I need to properly run both cards? Along with an i7 on the way as well.
what are you trying to accomplish with this Pc? What I7 cpu model is it?
Running two GPUs like an RTX 2080 and a GTX 1660 in the same system usually isn’t worth it, especially if the goal is better gaming performance. NVIDIA’s old SLI model is effectively dead, and you can’t combine the power of two mismatched cards anyway—on top of that, the GTX 1660 doesn’t support SLI at all. While modern APIs like DX12 and Vulkan technically allow multi-GPU, support has to be built into the game itself, and almost no developers do that anymore. In real-world gaming, the second GPU won’t add FPS and will mostly sit idle.
Even from a hardware and power standpoint, this setup brings more downsides than benefits. You’d need a solid 650–750W PSU, and just as importantly, the power supply must have enough dedicated PCIe power connectors for both cards (the RTX 2080 typically needs two PCIe plugs, and the GTX 1660 needs at least one). Many midrange or older PSUs simply don’t have the right number of cables, forcing people into splitters or adapters, which is not ideal and can create stability or safety issues. On top of that, you’re adding extra heat, power draw, and airflow challenges for almost no performance gain.
The age of the hardware makes the tradeoff even worse. Both cards are several generations old and lack many of the efficiency improvements and modern features found in newer GPUs. In most cases, running just the RTX 2080 by itself will be cooler, quieter, and more stable, and selling the GTX 1660 to put that money toward a single newer GPU will deliver far better results. Unless there’s a very specific non-gaming use case, running both GPUs at the same time doesn’t really accomplish anything—and if the goal isn’t clearly defined, that’s usually a sign the setup isn’t worth doing in the first place. You have not really stated what you’re trying to accomplish by doing this.
1 Like
Intel Core i7-11700K - Core i7 11th Gen Rocket Lake 8-Core 3.6 GHz LGA 1200 125W Intel UHD Graphics 750 Desktop.
I’d like to accomplish a pc that can run efficiently in general I guess.
I had no idea about that at all. I’m still learning about a whole lot when it comes to building pcs. The goal is like to accomplish is be able to run two gpus and what not.
Thank you for clarifying it for me.
I don’t know what you’re budget is but honestly I would see what your GPUs are selling for on Jawa and then try to sell them and put the money towards something like a single 9060 XT 16GB. Or run the 2080 for now till you can save up for a more modern GPU.
Like this.
some people will say it’s more than what you need but you would be ready to move this over to your next build. quite honestly you’d probably be set for quite a while with this GPU and your current CPU before you needed to do that.
depending on what size your current PSU is you may need to upgrade that too. A 550w minimum is recomended for that GPU.