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PowerColor HD4870 Review

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With the PowerColor HD 4850 being such a success, I have to admit, I am as giddy as a school boy to see how the HD 4870 performs. To get a real comparison, I will be putting the PowerColor HD 4870 up against some of the best and some mainstream cards being used on the market today, including the GTX 280 and the HD 4850 cards. All hardware is going to be run at stock specifications, including the timings and speeds to keep any outside interferences from affecting the scores. I will be using the same test setup for each card.


Comparison Video Cards:



Overclocked settings:

  • PowerColor HD4870 780/1075MHz

For the overclocking tests I used the Catalyst Control Center to bump up the core and memory speeds a few megahertz at a time until it became unstable and unable to complete a benchmark. Unlike the HD 4850, I could not get as much of an increase out of the RV770 core on the HD 4870. I was only able to get a 30MHz increase, topping out at 780MHz. However, for the memory I was able to get a lot more actually, a 175MHz increase (350MHz effective), bringing it to 1075MHz (2150MHz effective) which is a very good overclock for video card memory. Since this is GDDR5, I did not know what to expect but I am pleased with that bump in computing power. So how will this overclock handle, and will it make a difference since the GPU could only be raised a little? To find out, I will be running the overclocking tests at the speeds of 780/1075MHz. I also noticed that when overclocked even this little bit, the load temperatures peaked and stayed around 86 degrees Celsius.




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