Asus EAH4870 Dark Night Review
 

What is a knight? Traditionally, a knight is an esteemed and entitled member of the warrior class in a society. In other words, they are the best soldiers. They've been trained to take on challenging foes and crush them to bits. ASUS's "Dark Knight" was able to put up a very strong fight in most of the benchmarks it went through. However, it was not able to outperform every card thrown at it. This, of course, is 100% understandable because the 4870 is nothing new. In fact, the EAH4870 performed extremely well for its class. In most benchmarks, it was able to compete with the GTX 260 and Sapphire's 4870, which was equipped with 2GB of GDDR5 memory as opposed to only 1GB. In some cases, with an overclock, the "Dark Knight was able to outperform ATI's new 4890.

http://www.overclockersclub.com/reviews/asus_eah4870/