Good office computers

Wanted I have a cheap computer for the office area. The housing should be small, so that you can hide behind the computer monitor. Then I found the SLIM Windows7 Office of company Mega Computerworld (The Systemhaus GmbH in Magdeburg).
Sounded far as quite nice to, but not the built-in components (motherboard and processor) have been listed. Short emailed to the seller, and within a short time came the answer, that there is a ASROCK H61M-DGS and an Intel Celeron. Perfect in terms of response time!
Thus, various forums searched and looked at reviews of the board and the processor - all very positive! So order. As the computer has installed innately 4GB Memory, again further ordered 4GB (available as an option in the Amazon Store).
The hosts came within two days, great. Connected computer. Windows 7 Professional 64bit was preinstalled, so set up and go user accounts. All fragrances. Even 8 GB were built. All chic. But when I opened the computer for evaluation to have a look to build, initially I was entteuscht. It was built only a 8GB bars. However, in order to exploit the full power of 64-bit operating system for memory usage (parallel writing on two channels), I had specially ordered eien second memory. So I called and asked why the memory with 1 x 8GB and not 2 x 4GB [] has been installed. Unfortunately I did not get a satisfactory response. Answer 1 was: is more favorable response was 2: the difference they do not notice anyway. Both responses were incomprehensible for me.
If I order 2 x 4GB, I would like to receive this well. And if I see what is up to me!
After a short Aufregerphase I sent an 8GB and also got return mail back 2 x 4GB. So then reconciled me again, but why not the same so !! ??
In Annex I added the Windows Internal speed test with 1 x 8GB and with 2 x 4GB as a screenshot. The memory access has become demonstrably faster.
Otherwise, the computer is set up clean, well laid cables, the housing is chic. From the sound of her fans are under, but could NEN Tick be quieter; the network hard drive (Netgear) which stands on the desk, is identical.
The computer starts up quickly. (From power on to display the desktop pass barely 20 seconds incl. Application).
Office work with EXCEL: I have for the work can an Excel spreadsheet with 35,000 rows and 36 columns Sort and calculate subtotals. These things I have run in parallel on the Firmenlapto with Intel Core i5 processor can (Windows Vista, 8GB RAM) This completed the computer about 6 seconds faster.
Internet use with Firefox without complaint.
I can recommend the computer. The upgrading with 2 X 4GB (!!!) Then, when the Anbiter converts the desire nor directly, without the intermediate step with block of 1 X 8GB, then everything is fragrant!