Originally posted by: snidy1
I was thinking about adding a second monitor, I was wondering if it would decrease my overall performance of the system?
Possibly Yes, and possibly No.
I set up a multi-mon system on a K6-2 400Mhz, originally with a PCI 4MB Maxtrox Millenium hooked to a 19" MAG multisync. I later added one, and then another, 20" Sony fixed-freq displays, hooked up to two more PCI 4MB Matrox Millenium cards. I definately noticed an additional hit on both CPU power and system PCI bandwidth. So the extra display real-estate is not totally "free", there is an additional small cost to it. More modern (2-3Ghz) systems will probably be affected far less, and the 3 x 1280x1024 displays were oh-so-nice to use. Multi-mon is still highly-recommended, in any case.
🙂
Much more recently, I had a 32MB AGP 4x GF2 MX and a 16MB PCI TNT1 card, on my Athlon XP2000 rig with a KT400 chipset. I could leave the secondary display running my TV-in card's display, and/or capture, and play Unreal Tournament on the primary, without any noticable issues, although getting the right versions of drivers for video, 3D, and tv-in, and getting them to all work properly, in multi-mon configs, can be a real B----. Good luck, whatever you choose to do.