I built my 1st gaming PC 7 years ago. It's been awesome and reliable but now it's outdated. I want to play Crysis, COD4 and other high end games on high(preferably highest) settings at 1024X768.
I've been reading tons lately about all the new stuff out. The thing I'm stuck on is how much DDR3 RAM do I really need to run the best games smoothly?
I know I am going with an ATI 5870 GPUNewegg.com - ASUS EAH5870/2DIS/1GD5/A Radeon HD 5870 (Cypress XT) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card w/ATI Eyefinity - Desktop Graphics / Video Cards
I am stuck between getting an Intel i7 2.66 Newegg.com - Intel Core i7-920 Bloomfield 2.66GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 130W Quad-Core Processor - Processors - Desktops
Or AMD Phenom II X4 965 Black Edition Deneb 3.4GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Newegg.com - AMD Phenom II X4 965 Black Edition Deneb 3.4GHz 4 x 512KB L2 Cache 6MB L3 Cache Socket AM3 125W Quad-Core Processor - Processors - Desktops
The issue I'm having is the mobo I'm considering for the i7 has 6 DDR3 slots and supports up to 24Gb of memory and is triple channel. Newegg.com - ASUS Rampage II Extreme LGA 1366 Intel X58 ATX Intel Motherboard - Intel Motherboards
The AMD mobo's have 4 memory slots, supports up to 16Gb ram and is only dual channel.
How much memory do I need to run all the great games as stated in my first sentence? Is there a huge difference between double or triple channel? I was considering 12Gb of DDR3 memory but if I don't need that much I could save money by going with less or even going AMD on the CPU.
With the i7 rig and 12Gb of memory I'm looking at $1600-$1700, I prefer to keep costs down.