<p><span class="content"><font size="2">How does AMD respond to Lynnfield? Is it by drastically cutting prices on Phenom II? Nope. By introducing the world&rsquo;s first quad-core processor to debut at $99. Now that&rsquo;s cool.<br /> </font><span class="content"><font size="2">It&rsquo;s called the Athlon II X4 and its existence shouldn&rsquo;t be any surprise. AMD quietly announced it along with the Athlon II X2 line.&nbsp;<br /> </font><span class="content"><br /> <font size="2">Today we get two models: the Athlon II X4 630 and the Athlon II X4 620, priced at $122 and $99 respectively. The only difference between the two is clock speed; the 630 runs at 2.8GHz while the 620 runs at 2.6GHz. These are both AM3 chips meaning they'll work in AM3 motherboards with DDR3 memory or AM2+ boards with DDR2 memory.&nbsp;<br /> <br /> <a href="http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=3638">Read more...</a></font></span></span></span></p>