The Core i7 980X Review: Intel's First 6-Core Desktop CPU

DivX 8.5.3 with Xmpeg 5.0.3

Our DivX test is the same DivX / XMpeg 5.03 test we've run for the past few years now, the 1080p source file is encoded using the unconstrained DivX profile, quality/performance is set balanced at 5 and enhanced multithreading is enabled:

Our DivX and WME tests are getting long in the tooth. Most serious encoding is done using H.264 now, but I included these results to show that even in lighter workloads the 980X can still manage to pull ahead of the 975. The 980X is 30% faster in our DivX encode test, and it completes the encode in less than a quarter of the time of the old Pentium EE 955.

x264 HD Video Encoding Performance

Graysky's x264 HD test uses the publicly available x264 codec (open source alternative to H.264) to encode a 4Mbps 720p MPEG-2 source. The focus here is on quality rather than speed, thus the benchmark uses a 2-pass encode and reports the average frame rate in each pass.

To see what 6 cores and 12 threads can do we needn't look any further than the second (encoding) pass of our x264 benchmark:

The Core i7 980X is nearly 50% faster than the Core i7 975, 76% faster than the i7 870 and over twice the speed of the QX9770. This is a greater performance jump than we've seen from any single architectural shift. If you are serious about video encoding, you want Gulftown.

Windows Media Encoder 9 x64 Advanced Profile

In order to be codec agnostic we've got a Windows Media Encoder benchmark looking at the same sort of thing we've been doing in the DivX and x264 tests, but using WME instead.

Our Windows Media Encoder 9 test is the lightest of our video encoding tests. Without stressing the additional cores, the 980X performs no different from the 975.