Considering a Computer Upgrade

[daanji]

I am a 5x boxing looking for a slight upgrade to my current system. Overall, I am happy but I want to get better graphical performance. Currently, I set my slaves to lowest possible setting and have my main window on good with view distance and projected textures set to max. I'd like to have each windows view distance set to max with graphics set to at least fair / good.

I believe my limiting factor is my system RAM and my graphics card.


Current System:

OS : Windows 7
CPU: Intel Core i7-920 Bloomfield 2.66GHz LGA 1366 130W Quad-Core Processor BX80601920
RAM: OCZ Platinum 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
Mobo: ASUS P6T Deluxe V2 LGA 1366 Intel X58 ATX Intel Motherboard
GPU: EVGA 896-P3-1257-AR GeForce GTX 260 Core 216 Superclocked Edition 896MB 448-bit GDDR3 PCI Express 2.0 x16
Hard Drive: Dual Kingston 64 GB SSD in Raid 0


Considerations:

For ram, I am thinking G.SKILL Ripjaws Series 12GB (3 x 4GB) 240-Pin. Right now I have 6 GB. With all 5 clients loaded, my peak RAM usuage is around 5.21 GB. I think some may be offloading to solid state disk, slowing things down.

My motherboard has several utilites to overclock so I could go up to DDR3 2000. Would it make a difference?

For the graphics card, I'm not sure. I am an Nvidia fan, but I am hearing that ATI is the king lately. I'd rather not blow a wad of cash. I'd like to keep it around $150 range or so.

According to Tom's hardware, the best value card is the Radeon HD 5770 1 GB for $130.


What are you thoughts? Anything I've missed?