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XFX HD 7870 and 7850 Double Dissipation Review

Price: HD 7870 $374.99- HD 7850 $269.99


This year AMD blew us away with its HD 7900 series GPUs, each equipped with a 28nm Tahiti core. One month later AMD released the not as impressive Cape Verde core. This can be found in the HD 7700 series, which was targeted at the lower end of the GPU scale. Then, two months from the release of the 79xx series, AMD added the Pitcairn core to be paired up with the rest of the Northern Island GPUs. The Pitcairn core, as you probably know by now, can be found in the HD 7800 series cards. Like its older siblings, the Pitcairn core uses AMD's GCN (Graphics Core Next) architecture. So what can you expect with the GCN architecture? Up to 20 compute units, or 1280 stream processors, up to 153.6GB/s of memory bandwidth, 32 render back-ends, dual geometry engines, and a ninth generation tesselator. This means you can expect a 28nm process, PCI-E Gen 3 support, as well as both AMD PowerTune and AMD ZeroCore Power technology. The HD 7800 series will also be capable of AMD Eyefinity 2.0 and AMD App Acceleration. AMD hopes that this will make the 7870 and 7850 power enough to make you want to upgrade from your 5870 and 5850, respectively.

We just recently took a look at a video card equipped with AMD's fairly new Pitcairn core, the HD 7870 from Sapphire. Today we will be looking at two more cards equipped with this Pitcairn chip: the XFX HD Double Dissipation 7870 and 7850. Both cards feature a factory overclock as well as the Double Dissipation dual fan cooler. Just as with the Sapphire HD 7870, the XFX Double Dissipation HD 7870 is equipped with 1280 stream processors, whereas the XFX Double Dissipation 7850 is only equipped with 1024 stream processors. The XFX Double Dissipation HD 7870's 28nm core comes stock clocked at 1050Mhz whereas the HD 7850 comes in at 860MHz. Hopefully we will be able to increase both of those clock speeds with a fairly decent overclock. So how will the cards stack up to the rest of the competition? Let's find out!


Closer Look

Both cards, as we usually see from XFX, arrived in packaging that is about half the size of other video cards. This is something I actually like to see, because there really isn't a reason for having a giant box for a standard sized video card. Both boxes are almost identical to each other, in fact, the only differences are the names of the cards. The box features a mostly black color scheme with hints of blue, and the XFX logo is featured at the very top of the packaging. Located towards the center of the packaging is the card's name. Flipping the package over gives us some very detailed specifications and features of the card. Even more features can be found on one side of the packaging, while the other side features all the awards that XFX has won.








As with XFX packaging, the Double Dissipation cards feature a black inner packaging. Upon first opening it up you will be greeted with a black cardboard tray. This tray holds all of the card's included accessories. Removing this tray will reveal the GPU nice and snug in an antistatic bag.



Now that we've got the cards unboxed, let's take a closer look at them!

  1. Introduction & Closer Look
  2. Closer Look: XFX HD 7850 Black Double Dissipation Edition
  3. Closer Look: XFX HD 7870 Black Double Dissipation Edition
  4. Specifications & Features: XFX Black HD 7850 Double Dissipation Edition
  5. Specifications & Features: XFX Black HD 7870 Double Dissipation Edition
  6. Testing: Setup & Overclocking
  7. Testing: Metro 2033
  8. Testing: Batman: Arkham City
  9. Testing: Battlefield 3
  10. Testing: Unigine Heaven Benchmark 2.5
  11. Testing: DiRT 3
  12. Testing: Mafia II
  13. Testing: 3DMark 11
  14. Testing: Temperatures
  15. Testing: Power Consumption
  16. Conclusion
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