Nitro+ has some more features: NITRO Quick Connect system, NITRO Glow RGB LED, NITRO CoolTech, NITRO Free Flow, Intelligent Fan Control, so it is quieter than Pulse, it has 50 MHz higher turbo base frequency and 1 x 6-pin AUX Power Connector. If you really need to save 20 bucks and any of this features are not important for you, than you can get Pulse.