You can use diskpart to make partitions if you prefer---rather than letting Windows make the partitions during the installation.
I use it.
The advantage is that if you make your partitions in diskpart, you will end up with a single C partition on the SSD. C would contain both Windows and boot files.
If you do NOT use diskpart, you'd end up with C and System Reserved, with the boot files on System Reserved.
The disadvantage of not having System Reserved is that you can't use BitLocker, which I have no interest in.
A disadvantage of having boot files on System Reserved is that you'd have to include that partition in your Windows backup plan (imaging) because that partition includes the necessary boot files. Not a big deal, but you'd have to do remember to do it.
It's a matter of personal preference. Nothing at all wrong with having System Reserved. I just prefer having boot files on C--mostly because to do otherwise offends my fastidiousness and sense of order.
Here's the diskpart commands I use:
Type in the following commands one by one, followed by the Enter key to create a partition (text in parentheses are comments only):
list disk (to show the ID number of the hard disk to partition, normally Disk 0)
select disk 0 (change 0 to another number if applicable)
clean (this wipes the drive of anything on it; not needed on a brand new drive)
create partition primary (this will create one primary partition covering the entire drive; if you instead want to create a primary partition of 80 GB, add “size=80000” after the word “primary”
select partition 1 (this selects the partition you just made)
active (this marks that partition active)
format fs=ntfs quick (this formats that partition)
exit (this quits the diskpart program)
exit (this closes the command prompt window)
Continue Windows 7 installation as usual. Remember to highlight and select the partition just created when you come to the partition screen asking you "where do you want to install Windows?”.