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PowerColor Radeon HD 7790 Turbo Duo Review

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PowerColor Radeon HD 7790 Turbo Duo Conclusion:

As the second HD 7790 I have looked at, PowerColor's factory overclocked Turbo Duo Edition delivers eerily similar results to the first card I looked at. When you look at the FPS performance delivered by the HD 7790, AMD and its partners hit the performance marks. Clear in their sights was the GTX 650Ti from NVIDIA that occupied the same $150 price point. To that end the HD 7790 Turbo Duo from PowerColor delivered a higher level of performance than the GTX 650Ti from NVIDIA in each and every game tested when run at stock speeds. In one game the FPS margin was a single FPS.

Overclocking changes the dynamic somewhat with the PowerColor HD 7790 Turbo Duo's performance being equaled or bettered by the GTX 650Ti in three out of the ten tests run. Not as dominating but still on average you get more frames per second with the HD 7790 than with the GTX 650Ti. If you need more FPS performance you can add a second HD 7790 Turbo Duo to the mix as CrossfireX is supported with up to a two card configuration.

As with the last HD 7790 I looked at, PowerColor's HD 7790 Turbo Duo was locked at a maximum of 1200MHz on the core and 1600MHz on the 1GB of GDDR5 memory. With the two cards I saw identical performance with the identical clock speeds. FPS performance not withstanding, the real difference between the comparison HD 7790 and the Dual Fan-equipped Turbo Duo cooling on this version from PowerColor then comes down to how well the cooling solution sheds the thermal load generated by the AMD Bonaire core. At idle, both stock and overclocked, PowerColor's Turbo Duo cooling is the better solution. Under load the Turbo Duo cooling is a solid six degrees warmer than the comparison cooling solution, something I was not expecting. The level of noise generated by the comparison HD 7790 and the Turbo Duo were similar with no clear winner other than the end user on both counts.

PowerColor's HD 7790 Turbo Duo is a factory overclocked card so you already see a bump in performance over a reference design. To go a little further up the performance ladder you only need to push the sliders up in either PowerColor's own PowerUp Tuner or any one of the popular utilities available on the web. Sadly I ran into the same limits I experienced when looking at a competing card: 1200MHz (core) and 1600MHz (memory) were the limits seemingly locked in the vBIOS. It's great to max out the sliders but there seems like so much more is left on the table. I guess everyone can get a piece of the pie pretty easily.

Eyefinity is supported with up to three screens although chances are slim you will be gaming at this resolution with a single card. That however is not the only reason for a larger desktop surface. The ability to utilize a larger footprint can aid productivity when you need multiple windows open at a time.

Much like the comparison HD 7790, PowerColor's HD 7790 Turbo Duo offers playable FPS on the budget end of the spectrum, comes with enhanced cooling capabilities, crushes the competition's similarly priced offering at 1080p resolutions, and can be had for around $150. Not a bad showing!



  • Turbo Duo cooling
  • Quiet
  • Factory overclocked
  • High settings FPS
  • Crossfire support
  • Eyefinity support to three monitors



  • Limited overclocking


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