Some Internet commenters were hoping for 1,400MHz clock speeds from custom RX 480 variants, which clearly didn’t happen here (or on any of the other custom RX 480s announced thus far). The default Boost mode comes enabled out of the box, hitting a modest 1,306MHz on the 4GB Nitro+ RX 480 and 1,342MHz on the 8GB version. The optional Quiet mode actually sticks to the same 1,266MHz boost clock as the reference RX 480. Both ship with a dual BIOS featuring both “Quiet” and “Boost” modes. The core clock speeds for the two models also differ. The VRAM inside the 8GB model comes clocked at 2,000MHz, while the 4GB model runs at 1,750MHz. The differences between the two extend beyond mere memory capacity, however. The Nitro+ RX 480 ships in two configurations: A 4GB (which we’ll be reviewing) and an 8GB model, both with a 256-bit memory bus. Now let’s talk about Sapphire’s alterations. The Nitro+ RX 480 is no different-though its tweaks are major, extensive, and occasionally much-needed-so before we dive into the Sapphire card’s specifics, here’s a quick look at the key specifications of the RX 480, the first graphics card built around AMD’s cutting-edge 14nm Polaris GPU. All custom graphics cards build upon the foundation set by their underlying graphics processor.
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