|AMD Phenom II X4 965 BE CPU HDZ965FBGIBOX|
|Reviews - Featured Reviews: Processors|
|Written by Mathew Williams|
|Thursday, 13 August 2009|
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Closer Look: Phenom II X4 965 BE
As I mentioned in the intro, the Phenom II X4 965 BE that we're testing today is based on the same C2 revision of Deneb as the X4 955. So without any changes to the silicon, the X4 965 is simply a higher binned chip capable of running at 3.4 GHz. Fortunately, we have both processors on hand to measure what kind of performance difference to expect. Before we get to the benchmarks, though, let's take a closer look at the chip and recap some of the features of this architecture.
Despite the screenshot above, AMD's Phenom II X4 965 is a socket AM3 processor. That means full support for DDR3 memory, as well as backward compatibility with DDR2 and AM2+ motherboards. As an X4 part, all four cores of the Deneb die are enabled, as well as 512KB L2 cache per core and the full 6MB L3 shared cache. To reach 3.4GHz, though, it looks like AMD had to increase the voltage to 1.4 volts. In fact, a quick glance back at the specifications reveals a TDP of 140 watts. Given some of the undervolting figures I've seen with the X4 955, though, I have a feeling this chip could run on less. Of course, as a Black Edition model, we're more interested in how well it will overclock. We'll cover this in detail toward the end of this article, but here's a little preview:
After some tweaking, we were able to get our Phenom II X4 965 up to 3.9GHz, a full 100 MHz higher than we achieved during our X4 955 review. We also increased the CPU-NB to 2.8GHz, which, as you'll see in the overclocking section, helps quite a bit with memory intensive applications.