Will this be good for gaming and also support dual screens? (Also will it all work together)

HDD - Seagate Barracuda ST1000DM003 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive - Bare Drive

Motherboard - ASRock 970 PRO3 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD MOTHERBOARD

GPU - SAPPHIRE Radeon HD 7770 GHz Edition OC 1GB 128-bit GDDR5 PCI Express 3.0 x16 HDCP Ready Video Card (11201-02-20G)

CPU - AMD Phenom II X4 965 Black Edition Deneb 3.4GHz Socket AM3 125W Quad-Core Processor

PowerSupply - AZZA Dynamo 850 850W ATX & EPS 12V 2.91 SLI Ready CrossFire Ready Power Supply

RAM - ADATA XPG Gaming Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model AX3U1600GC4G9-2G

Case - NZXT M59 - 001BK Black Steel ATX Mid Tower Computer Case

CPU Cooler - COOLER MASTER Hyper 212 Plus RR-B10-212P-G1 "Heatpipe Direct Contact" Long Life Sleeve 120mm CPU Cooler Compatible with Intel 1366/1155/775 and AMD FM1/FM2/AM3+

Yea looks fairly good just one problem.

That psu, I have never heard of azza i would avoid them and get a more reputable make like seasonic, corsair, xfx, antec, cooler master. Its also way way over kill for that rig you wont even touch 500w.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

^get that its cheeper, a better make and still has pleanty of room for upgrades and so on.

i think that cpu only supports 1333mhz but the ram should automagicly under clock it self to 1333 giving you a lower latency ram. So do get the ram but check it in the bios after building.

I dont like sapphire they some times require sapphires crappy custom drivers rather than the amd.com ones. But thats just my personal preference.

The 7770 is a good mid ish range card and should support dual monitors on desktop no problem but 1 monitor for gaming. I would consider saving up and getting a 7850 or a 7870 as they are really nice cards and well worth the extra cost.

Flux is right, you should get a better brand PSU like one of the ones he mentioned and with those parts even hitting 300W would be a stretch, but it's generally good to overbuy on your PSU a little bit, but not by that much lol. 

Thanks man you've help me alot. I was looking at benchmarks how does the XFX Radeon HD 6870 1GB sound it has better benchmarks than the 6850 and 7770?

phenoms are really old dude...

i suggest getting a 990fx mobo and an fx-6300

Yea the 7 series are newer but they dont add any new tech so its good to get a 6870 over a 7770

I've changed the motherboard to a BIOSTAR TA970XE AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard with UEFI BIOS, and thank you so much flux, And by the way Commissar I know its pretty old but I love it and i'm kind of on a budget right now but was planning to upgrade to the fx-6300 anyways xD. Thanks for all the help guys.