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On the following assumptions:
- No of users: 6782
- Cost of Microsoft Office per User per Year: £20 (or £60 every three years). This
is a guess on the principle MS will heavily discount the cost of enterprises
licenses to encourage use in public sector organisations.
- New computers purchased every 4 years (bit of a guess: I believe that most
computers would be thrown away every 2-3 years, but all would have to be renewed at
least every 4 years)
- Cost of Microsoft (as opposed to Linux) per PC: I am guessing £20. I am aware that
retail OEM MS Operating systems go for about £50, but again I do not believe that
large public sector organisations pay that
- Interest Rate (Borrowing cost). I am assuming 5%. (The lower the interest rate,
the more the total cost of staying with MS. I do not know what the borrowing costs
for Devon County Council are but I would be surprised if they could not borrow at
less than 5%).
- The cost of switching Bristol's 6000 computers was a one time cost of £643,000
Then the cost of not switching to Microsoft for 10 years is £1.3m or £130,000 per
year, with a payback of period of the cost of switching of 5 years
Summary of figures changing key variables
Computers 6782 6782 6782 6782 6782 6782
License Fee MS Office 10 20 50 10
20 50
Computer renewal rate 4 4 4 4
4 4
Cost of MS software 20 20 20 20
20 20
Investment Hurdle 10% 10% 10% 5%
5% 5%
Total Cost £0.6m £1.0m £2.3m £0.8m £1.3m £2.8m
Cost pa £0.06m £0.1m £0.2m £0.08m £0.1m £0.3m
Question
a) Does anyone know for certain how often computers are changed in Devon. Is it
every 3 years or 4. (If computers are changed every three years then the cost of
staying with MS increases by about £100,000 pa)
b) Does anyone have any realistic idea of how much enterprise software licenses
cost. I am assuming that the MS charge £20 per user per year. That could be too high
on the principal that MS might effectively give away the software to ensure that
County Councils use MS and hence all users are encouraged to use MS.
--
Henry
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