FL Studio system requirements:
*2Ghz Intel Pentium 4 / AMD Athlon 64 (or later) compatible CPU with full SSE2 support. The faster your CPU and more cores it has the more you will be able to do simultaneously. Download and test the demo!
*32 or 64 Bit versions of Windows 8, Windows 7, Vista, XP (with service pack 3)
*(or) Intel Mac with Boot Camp / Windows. Running XP (with service pack 3), Vista or Windows 7 (in 32 or 64 Bit)
*1 Gb or more RAM recommended
*1 Gb free disk space
*Soundcard with DirectSound drivers. ASIO/ASIO2 compatible required for audio recording (FL Studio installs with generic ASIO4ALL drivers)
What are the Live 9 system requirements?
IntelĀ® Mac with Mac OS X 10.5 or later, or PC with Windows XP, Windows Vista, Windows 7 or Windows 8; Multicore processor; 2 GB RAM; 1024x768 display; DVD drive or broadband internet connection for installation;
Required disk space for basic installation:
3GB free disk space.
Required disk space if all included sounds are installed:
Live 9 Suite: 55 GB free disk space
Live 9 Standard: 12 GB free disk space
Live 9 Intro: 6 GB free disk space
Note: FL Studio Mobile (iPhone, iPod touch, iPad) comes in 2 versions:
*FL Studio Mobile (iPhone/iPod touch)
*FL Studio Mobile HD - universal binary (iPhone/iPod touch/iPad)
So I went and checked the support forum of FL Studio and found a topic that addresses your issue
http://support.image-line.com/knowledgebase/base.php?id=55&ans=214
titled
"What PC should I get for music making?" and posted on 2013/01/22,
this is the summary
Laptop vs Desktop/Tower: full height tower' style case for Quiet PC(under the desk)
Operating System: Recommend Windows 7 64 Bit
CPU: i5 and i7 Intel processors, specifically the i7-3770 & 5-3550
Audio Interface (ASIO): allows FL Studio direct access to the soundcard rather than communicating via the Windows operating system; and also avoid internal/on-mother-board sound-chip(Better read the link in full)
RAM: 8 Gb is enough. 16 Gb is only necessary if you typically use lots of sample based instruments
Hard Disk Drive (HDD): SSD vs Traditional; a 1+ TB HDD
Video Card: Look for a video card with two DVI or DVI + VGA output, FL Studio work-flow is significantly improved with two (or more) video monitors.