My system specs are in my sig. I was thinking of going SLI 2x GTX560, but then seen a post about someone wit a quad core where the fps performance was worse in SLI vs just using one GTX560. Obviously that had me concerned to post and ask for advice before making a decision on what to get. The 600 series seem to be pricy currently. Current most graphic intensive game I own that I have played is Lord of the Rings Online. Most graphic intensive that I'm aware game I plan to buy in the near future is Guild Wars 2. GW2 beta on my current card crawls at 15 fps and lower. I also plan on buying starcraft 2, diablo III, possibly other sequals to games I currently own that are coming out in the near future. For reference here is a list of all the games I own many of which I haven't played if that is relevant.
** games I completed
AI Wars (complete collection)
A.R.E.S.
Avencast Rise of the Mage
Bastion
Bioshock
BioShock 2
Boarderlands
DarkSiders
Dead Space
Dead Space 2
**Diablo: Hellfire
**Diablo II: Lord of Destruction
Dragon Age Origins: Ultimate Edition
Dungeons and Dragons: Daggerdale
The Elder Scrolls III: Morrowind
The Elder Scrolls IV: Oblivion
Fallout
Fallout 2
Fallout 3: Game of the Year Edition
Fallout Tactics
Gothic
Gothic II: Gold Edition
Gothic 3
Gothic 3 Forsaken Gods Enhanced Edition
Gothic 4: ArcaniA
Greed: Black Border
Greed Corp
Guild Wars
Hydrophobia: Prophecy
King's Bounty: The Legend
King's Bounty: Armored Princess
King's Bounty: Crossworlds
Lara Croft and the Guardian of Light
**Lighthouse
The Lord of the Rings Online
Magika
Mass Effect
Mass Effect 2
Mechcommander Gold
Mechcommander 2
Mechwarrior 2: Titanium Trillogy
Mechwarrior 3 (complete collection)
Mechwarrior 4 (complete collection)
Metro 2033
Mirror's Edge
**Myst Masterpiece Edition (+ Real Myst)
**Myst Riven
**Myst III: Exile
Myst Uru Complete Chronicles
Neverwinter Nights: Diamond Edition
Neverwinter Nights 2: Platinum
Nikopol: Secrets of the Immortals
Numen: Contest of Heroes
Portal
Portal 2
Railroad Tycoon 2: Platinum Edition
Risen
Sacred: Gold
Sacred 2: Fallen Angel
Scratches: Director’s Cut
Sid Meier’s Alpha Centauri
Sid Meier’s Civilization IV (complete collection)
Sim City 4 Deluxe
The Sims 2 (complete collection)
Spellforce: Platinum Edition
Spellforce 2: Gold Edition
Starcraft: Broodwar
Star Wars Knights of the Old Republic
Star Trek Armada
Still Life
Still Life 2
Syberia
Syberia 2
Titan Quest: Immortal Throne
Tomb Raider: Anniversary Edition
Tomb Raider: Legend
Tomb Raider: Underworld
**Titan Quest: Immortal Throne
Torchlight
The Witcher: Enhanced Edition
**Warcraft II Battle.net Edition
Warcraft III Battle Chest
** games I completed
AI Wars (complete collection)
A.R.E.S.
Avencast Rise of the Mage
Bastion
Bioshock
BioShock 2
Boarderlands
DarkSiders
Dead Space
Dead Space 2
**Diablo: Hellfire
**Diablo II: Lord of Destruction
Dragon Age Origins: Ultimate Edition
Dungeons and Dragons: Daggerdale
The Elder Scrolls III: Morrowind
The Elder Scrolls IV: Oblivion
Fallout
Fallout 2
Fallout 3: Game of the Year Edition
Fallout Tactics
Gothic
Gothic II: Gold Edition
Gothic 3
Gothic 3 Forsaken Gods Enhanced Edition
Gothic 4: ArcaniA
Greed: Black Border
Greed Corp
Guild Wars
Hydrophobia: Prophecy
King's Bounty: The Legend
King's Bounty: Armored Princess
King's Bounty: Crossworlds
Lara Croft and the Guardian of Light
**Lighthouse
The Lord of the Rings Online
Magika
Mass Effect
Mass Effect 2
Mechcommander Gold
Mechcommander 2
Mechwarrior 2: Titanium Trillogy
Mechwarrior 3 (complete collection)
Mechwarrior 4 (complete collection)
Metro 2033
Mirror's Edge
**Myst Masterpiece Edition (+ Real Myst)
**Myst Riven
**Myst III: Exile
Myst Uru Complete Chronicles
Neverwinter Nights: Diamond Edition
Neverwinter Nights 2: Platinum
Nikopol: Secrets of the Immortals
Numen: Contest of Heroes
Portal
Portal 2
Railroad Tycoon 2: Platinum Edition
Risen
Sacred: Gold
Sacred 2: Fallen Angel
Scratches: Director’s Cut
Sid Meier’s Alpha Centauri
Sid Meier’s Civilization IV (complete collection)
Sim City 4 Deluxe
The Sims 2 (complete collection)
Spellforce: Platinum Edition
Spellforce 2: Gold Edition
Starcraft: Broodwar
Star Wars Knights of the Old Republic
Star Trek Armada
Still Life
Still Life 2
Syberia
Syberia 2
Titan Quest: Immortal Throne
Tomb Raider: Anniversary Edition
Tomb Raider: Legend
Tomb Raider: Underworld
**Titan Quest: Immortal Throne
Torchlight
The Witcher: Enhanced Edition
**Warcraft II Battle.net Edition
Warcraft III Battle Chest