Looking for feedback on how this desktop would do with arma 3 and if there is something that I could improve or switch out.

[OttovonEssigmann]

CAS:CyberPowerPC X-Nova Mid-Tower Gaming Case w/ USB 3.0, Side-Panel Window

CD:LG 14X Internal Blu-ray Burner, BD-RE, 3D Playback DVD+RW Combo Drive (Black Color)

COOLANT:Standard Coolant

CPU:Intel® Core™ i7-4790 3.60 GHz 8MB Intel Smart Cache LGA1150 [+76]

CS_FANefault case fans

FAN:Asetek 550LC 120mm Liquid Cooling CPU Cooler - Extreme Cooling Performance (Single Standard 120MM Fan)

HDD:128GB SanDisk SSD + 1TB SATA III Hard Drive Combo (Combo Drive)

IUSB:Built-in USB 2.0 Ports

MEMORY:8GB (4GBx2) DDR3/1866MHz Dual Channel Memory (G.SKILL Ripjaws X)

MOTHERBOARD:MSI Z97S SLI Krait Edition ATX w/ GIGABit LAN, 2 PCIe x16, 3 PCIe x1, 1x M.2, 6x SATA 6GB/s (All Venom OC Certified)

NETWORK:Onboard Gigabit LAN Network

OS:Windows 8.1

POWERSUPPLY:600 Watts - Standard 80 Plus Certified Power Supply - SLI/CrossFireX Ready

SERVICE:STANDARD WARRANTY: 3-YEAR [3 Year Labor, 1 Year Parts] LIMITED WARRANTY PLUS LIFE-TIME TECHNICAL SUPPORT

SLI_BRIDGE:Standard SLI/Crossfire Bridge

SOFT1:McAfee AntiVirus Plus [+0]

SOUND:HIGH DEFINITION ON-BOARD 7.1 AUDIO

VIDEO:NVIDIA GeForce GTX 960 4GB GDDR5 PCIe 3.0 x16 (Maxwell) [+25] (Single Card)

WNC:GIGABYTE GC-WB867D-I 802.11AC Wi-Fi up to 867 Mbps + Bluetooth 4.0 Combo w/ Dual Antenna PCI-E Adapter

WTV:None

_PRICE+1160)

 

[C12Friedman]

First thing I'll suggest is getting rid of the "Standard" PSU, an on-line search for "CyberPowerPC standard PSU" may be enlightening (probably not inspiring though). The CoolerMaster V550 and XFX TS550 are good options there
Second, trade the Core i7-4790k for an i5-4690k or 4670k since the additional cores offered by hyper-threading don't show any real advantage for gaming. While you can game with it and it won't hurt to have it (can even help with bragging rights) there isn't a whole lot of benefit there.
The rest of it looks to be very nice for gaming and I'd expect very high performance from it

 

[OttovonEssigmann]

First thing I'll suggest is getting rid of the "Standard" PSU, an on-line search for "CyberPowerPC standard PSU" may be enlightening (probably not inspiring though). The CoolerMaster V550 and XFX TS550 are good options there
Second, trade the Core i7-4790k for an i5-4690k or 4670k since the additional cores offered by hyper-threading don't show any real advantage for gaming. While you can game with it and it won't hurt to have it (can even help with bragging rights) there isn't a whole lot of benefit there.
The rest of it looks to be very nice for gaming and I'd expect very high performance from it

Would 500 Watts be enough power for this setup I also changed the graphics card to a NVIDIA GeForce GTX 970 4GB GDDR5 PCIe 3.0 x16 and switched to an i5-4690k

 

[C12Friedman]

Yeah, 500W is enough for that system with any single GPU. I'd say you're set.