This graph counts the baselines submitted to us during these
time period and therefore is representative of CPUs in use rather
than CPUs purchased.
The Quarters are by the calendar year rather than financial. (i.e.
Q1 starts January 1st)
Baselines can be submitted from anywhere therefore these are global
We do receive a small number of submissions of CPU types other than
AMD and Intel however the percentage is so small as to make it not worth
graphing. This combined with rounding off the percentages to 2 decimal
places will account for each quarter not always adding up to exactly
This chart only includes x86 processors and does not include
other chip architectures these manufacturers may sell.
This chart only includes CPUs installed into PCs and does not include
As the PerformanceTest software only runs on Windows OS and counts on user
submitting their benchmarks. This chart may be non reflective of non Windows user base.
The figures don't represent just new CPU sales. They also reflect to some degree the
installed base from the last 5 to 10 years. So large monthly swings in CPU sales
will take time to convert the installed base.
As the chart is updated daily, but data points are for the quarter, the first few days
of a new quarter will only have a few samples. i.e. The first few days of a new quarter
are less accurate compared to the end of a quarter.
Due to insufficient Server CPU data pre-2008, the server charts at Q1 2008.