Quantcast
 
 


AMD Radeon HD 7870 & HD 7850 Review

Author: SKYMTL
Date: March 3, 2012
Product Name: Radeon HD 7870 & HD 7850
Share |

Overclocking Results


Overclocking has quickly become a standard practice for anyone that owns an HD 7000-series GPU for a number of reasons. First and foremost among these is the willingness of the cards to reach high frequencies with very little effort and the resulting performance increase can vault even a lowly HD 7770 into a whole new market segment.

To attain the results below, we overclocked using AMD’s Overdrive utility with the default fan speed profile enabled and the PowerTune limit set to +20. Voltages were kept to their reference levels as well. Also take note that if an overclock could not complete our entire test suite (benchmark sequences of every game listed in this review, at every resolution) equaling roughly 2 hours of game time, it was not included in the results below. As such, we are confident that our final clock speeds are entirely stable for gaming purposes.


HD 7870 Results


AMD’s Catalyst Control Center includes some generous core and memory limits for the HD 7870 but without any voltage adjustments, we weren’t able to max either of them. Nonetheless, it hit a core speed of 1196MHz while the memory hit a blistering speed of 5204MHz before the GDDR5’s error correction routines began throttling performance. All in all this is an excellent result and as you will see below, in game performance really was something to behold for a $349 card.


HD 7850 Results


AMD has instituted some strict limits for how far the HD 7850’s core can overclock but once again we weren’t able to attain anything close to 1050MHz. Instead, our card topped out at 1002MHz but the memory fared much better with a top speed of 5228MHz, one upping the HD 7870’s overclock by a few points.




 
 
 

Latest Reviews in Video Cards
August 14, 2017
After nearly two years of teases, AMD's Vega 64 and Vega 56 have finally arrived. Can these two graphics cards really compete with NVIDIA's Pascal lineup?...
July 30, 2017
AMD has finally revealed almost everything there is to know about RX Vega including its pricing, performance and specifications. Is it a disappointment or everything we were hoping for?...
June 12, 2017
Cramming low power components into ultrabooks is easy. But what NVIDIA has done is shoehorn some serious GPU horsepower into some of the thinnest gaming notebooks around without requiring many sacrifi...