Can I install a second graphics card in my system? I currently have a 1660 ti which I upgraded from 750 ti. if I install both my 750 ti and my 1660
![GTX 970 SLI vs. Single 980 Ti – Is SLI Worth It? | GamersNexus - Gaming PC Builds & Hardware Benchmarks GTX 970 SLI vs. Single 980 Ti – Is SLI Worth It? | GamersNexus - Gaming PC Builds & Hardware Benchmarks](https://www.gamersnexus.net/media/k2/items/cache/68872c90030d4bee6f3b00fcc8409c91_XL.jpg)
GTX 970 SLI vs. Single 980 Ti – Is SLI Worth It? | GamersNexus - Gaming PC Builds & Hardware Benchmarks
![MSI GeForce GTX 970 GAMING 4G (4GB, 256 Bit, GDDR5, PCI Express 3.0 x16, HDCP Ready, SLI Support, G-SYNC Support, Graphics Card) | MSI-GTX-970-GAMING-4G Buy, Best Price in Russia, Moscow, Saint Petersburg MSI GeForce GTX 970 GAMING 4G (4GB, 256 Bit, GDDR5, PCI Express 3.0 x16, HDCP Ready, SLI Support, G-SYNC Support, Graphics Card) | MSI-GTX-970-GAMING-4G Buy, Best Price in Russia, Moscow, Saint Petersburg](https://microless.com/cdn/products/32874-hi.jpg)
MSI GeForce GTX 970 GAMING 4G (4GB, 256 Bit, GDDR5, PCI Express 3.0 x16, HDCP Ready, SLI Support, G-SYNC Support, Graphics Card) | MSI-GTX-970-GAMING-4G Buy, Best Price in Russia, Moscow, Saint Petersburg
![GTX 970 SLI vs. Single 980 Ti – Is SLI Worth It? | GamersNexus - Gaming PC Builds & Hardware Benchmarks GTX 970 SLI vs. Single 980 Ti – Is SLI Worth It? | GamersNexus - Gaming PC Builds & Hardware Benchmarks](https://www.gamersnexus.net/images/media/2016/gpu/970-sli/sli-970-mll-1080.png)