Gtx 580

[r0bc]

In almost every case the 3GB card is slightly slower than 1.5GB reference card...most likely due to higher latency from the 64x32 modules and increased memory controller overhead....
I'd buy the cheaper one

[CWMV]

My EVGA GTX 580SC has been flawless with my i7 2600k in both IL2 and RoF with everything maxed out. RoF has been particularly impressive, I mean its damn near photo-realistic.
I wish I had something to tell you in reference to CoD but I just wasn't impressed enough with it to bother installing it on my new build.
Regardless I dont think youll be missing out on anything whichever way you go 1.5 or 3ghz, both will serve you very well.

[Herbs107]

Firstly its a brillant card both the 1.5g or 3.0g versions, secondly strange that no one has mentioned this, your 6 gigs of ram is been wasted on a 32x operating system, and thirdly you need to update your cpu to a quad core. Installing a 580 currently on your system specs will bottleneck the card, and it will be handicapped mostly by your dual core cpu.

[Helrza]

@robc, thatnks for that liittl bit of info, u just helped me decide on the 1.5gb matrix

@herbs, yeh i know about the 6gb of ram the system is actully dual boot with 32bit and 64bit. But for the sake of being able to use my gameport joystick i need to use 32bit, so therefore i can only use CloD on the 32bit OS the new card is for the new system ive started building for CloD, so the old specs are pretty much irrelevent

p.s. Even thou its a dual core, ud be quite suprised with how well ive got cliffs runs on it 30 fps over london with med settings, and smooth