New Gaming/Photoshop Build

This is what I have come up with so far:

CPU
Intel Core i5-750 Lynnfield 2.66GHz LGA 1156 95W Quad-Core Processor Model BX80605I5750 - Retail

MOBO
ASUS P7P55D-E Pro LGA 1156 Intel P55 SATA 6Gb/s USB 3.0 ATX Intel Motherboard - Retail

GPU
XFX HD-587X-ZNFC Radeon HD 5870 1GB 256-bit DDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card - Retail

Case
COOLER MASTER HAF 922 RC-922M-KKN1-GP Black Steel + Plastic and Mesh Bezel ATX Mid Tower Computer Case - Retail

PSU
OCZ ModXStream Pro OCZ700MXSP 700W ATX12V V2.2 / EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC ... - Retail

RAM
G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-4GBRM - Retail

HSF
COOLER MASTER Hyper 212 Plus Intel Core i5 & Intel Core i7 compatible RR-B10-212P-G1 120mm "heatpipe direct contact" Long ... - Retail
Arctic Silver 5 Thermal Compound - OEM

I think the 5870 might be more then I really need but I dont know if the 5850 is able to Eyefinity at higher resolutions with came such as MW2 and other FPS. I am above my original budge by quiet a lot but willing to spend the extra if I see the money as well spent. I am planning to add another GPU (if needed) by years end to complete the build along with the monitors needed for Eyefinity. Thank you for any help.

While the OCZ is OK, I would not plan to put two 5870s on it.

TP-750 would be a minimum choice
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

But really a 70A PSU would be ideal. 850TX would be a good budget choice
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Then again you are going to have some bottleneck on a P55 board running two 5870s in CF. So, just do the 5850 instead. It will handle three monitors in CF just fine.

Would I need a new PSU if I go with the 5850s? and would I need the second GPU in order to run all 3 monitors?

Did you mention the resolution? If they were 30" 2560x1600 res monitors, that would be pushing things. If we are talking about 1920x1080, then yes you can do that. The second GPU would just make it faster, the single card will run 3 monitors in eyefinity.

I would be pretty comfortable with the TP-750 and 5850s in CF, myself. Not so much the OCZ.

I havent decided on monitors yet but the biggest Ild get would be 23" and will probably settle for smaller then that (but bigger then 20")

Newegg is having a deal right now that gets me MW2 for free.

# AMD Phenom II X4 955 Black Edition Deneb 3.2GHz Socket AM3 125W Quad-Core Processor Model HDZ955FBGMBOX - Retail
# 345250GIGABYTE GA-790XTA-UD4 AM3 AMD 790X SATA 6Gb/s USB 3.0 ATX AMD Motherboard - Retail
# 345250AMD Gift - Call of Duty Modern Warfare 2 Coupon - Retail

I would be switching to AMD which I really wanted an i5 but going from the P4 3.0 im on now to the x4 would be a huge upgrade for me anyways (and a little cheaper then the i5 since I am over my original budge of around 600-700)

I would also be getting

GPU
XFX HD-585A-ZNFC Radeon HD 5850 (Cypress Pro) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video ... - Retail (second to be added down the line)

RAM
G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-4GBRM - Retail

One of the PSUs you listed and the same tower. Just looking for a HSF now so I could overclock the chip safely. How is this all looking.

What is it that the 860 has but the 750 doesn't ?.... Hyperthreading ?

Yes Hiperthreading is the main difference (if not the only)

The AMD list is OK, although you are still dealing with X8/x8 PCI-E lanes when you are talking about 790X.

I would like to see some tests done with eyefinity, CF, and these slower boards to see exactly what the impact is... but we don't have that I think.

Your list will work fine.

So you would recommend a better MOBO then? Looking at your list i saw:
GIGABYTE GA-790FXTA-UD5 AM3 AMD 790FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard - Retail

It also comes as the same package price with MW2 deal. Would this be the mobo you would recommend for me? I would hate the GPUs to be bottle-necked just because I didnt spend ~40 more on a motherboard.

Yes that would be the better board to use, for sure. The question is how much better is it, and I doubt anyone can answer that today... we just don't have the benchmarks.