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Windows versions
Which versions are people using?
See Usage share of operating systems
Here are some OS stats from web clients. Figures are percent of all Windows versions.
| Source | Date | 8/8.1 | 7 | Vista | XP | <XP |
|---|---|---|---|---|---|---|
| Netmarketshare | April 2014 | 13.3 | 53.7 | 3.1 | 28.6 | 1.2 |
| W3 schools | April 2014 | 15.5 | 62.3 | 4.1 | 18.1 | 0.1 |
| Statcounter | May 2014 | 19.6 | 68.7 | 1.5 | 9.9 | 0.2 |
| AT internet | Febuary 2014 | 11.4 | 61.5 | 6.7 | 20.5 | 0.0 |
| Wikimedia | April 2014 | 15.2 | 64.0 | 4.4 | 16.2 | 0.2 |
Here are the percentages of Windows versions analyzed from the Firefox automated crash reports of 8 May 2014 and 20 September 2015.
| Source | Date | 10 | 8/8.1 | 7 | Vista | XP | <XP |
|---|---|---|---|---|---|---|---|
| Firefox crashes | 8 May 2014 | 10.1 | 61.5 | 4.8 | 23.5 | 0.0 | |
| Firefox crashes | 20 Sept 2015 | 11.8 | 14.7 | 63.5 | 4.2 | 5.8 | 0.0 |
The game site Steam has a hardware survey with these numbers for April 2014:
| 32 or 64 bits? | 8/8.1 | 7 | Vista | XP | <XP |
|---|---|---|---|---|---|
| 32 + 64 bits | 24.8 | 65.5 | 3.6 | 6.0 | 0.1 |
| 32 bits | 0.9 | 13.0 | 1.2 | 5.7 | 0.1 |
| 64 bits | 23.9 | 52.5 | 2.4 | 0.3 | 0.0 |
| % 64 bits | 96.2 | 80.2 | 65.7 | 5.0 | 0.0 |
Steam survey for December 2015:
| 32 or 64 bits? | 10 | 8/8.1 | 7 | Vista | XP |
|---|---|---|---|---|---|
| 32 bits | 1.0 | 0.6 | 7.8 | 0.3 | 2.2 |
| 64 bits | 28.8 | 18.6 | 35.6 | 0.2 | 0 |
| % 64 bits | 96.6 | 96.9 | 82.0 | 36.0 | 0 |
Gamers tend to have high performance machines, this might also be true for scientists doing numerical computing.
Of 64 bit versions of Windows, 99.7% have Windows 7 or greater:
>>> b64 = [28.8, 18.6, 35.6, 0.2, 0] >>> print(sum(b64[:3]) / sum(b64) * 100)
What proportion of users have SSE2?
One estimate is from an analysis of Firefox crash reports in early 2012. This showed 4.5% of crash reports coming from CPUs without SSE2. The analysis was likely only for crash reports on Windows machines.
Here's the same analysis at 3-monthly intervals since then:
20120102-pub-crashdata.csv.gz: 4.53 20120401-pub-crashdata.csv.gz: 4.24 20120701-pub-crashdata.csv.gz: 2.77 20121001-pub-crashdata.csv.gz: 2.83 20130101-pub-crashdata.csv.gz: 2.66 20130401-pub-crashdata.csv.gz: 2.59 20130701-pub-crashdata.csv.gz: 2.20 20131001-pub-crashdata.csv.gz: 1.92 20140101-pub-crashdata.csv.gz: 1.86 20140401-pub-crashdata.csv.gz: 1.12 20140701-pub-crashdata.csv.gz: 0.95
More recently:
20150920-pub-crashdata.csv.gz: 0.50
See analyze_crashes.py.
So we appear to be at about half of one percent non-SSE2 Windows machines for Firefox crashes.
The Steam hardware survey has 99.96% of Windows users with SSE2 in April 2014. By December 2015 this figure was 99.99% with 99.93% having SSE3.