New Computer Build Advice ($900 budget)

With only 430W, a GTX 750 Ti i guess.

Anything higher will require a bigger PSU, even the upcoming GTX 960.

Which monitor, keyboard and mouse are you gonna use? Common or fancy ones.

Ah well slightly over budget, not a modular psu but a good one nonetheless.
Well check it out and see there are some pointers there.
Of course it also includes a 256GB SSD and a 2TB WD black HDD and R9 270X

PCPartPicker part list: http://pcpartpicker.com/p/BYjKMp
Price breakdown by merchant: http://pcpartpicker.com/p/BYjKMp/by_merchant/

CPU: AMD Athlon X4 860K 3.7GHz Quad-Core Processor ($83.45 @ OutletPC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($28.75 @ OutletPC)
Motherboard: Gigabyte GA-F2A88XM-D3H Micro ATX FM2+ Motherboard ($69.98 @ OutletPC)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($63.99 @ Newegg)
Storage: Crucial MX100 256GB 2.5" Solid State Drive ($104.99 @ SuperBiiz)
Storage: Western Digital BLACK SERIES 2TB 3.5" 7200RPM Internal Hard Drive ($114.44 @ Amazon)
Video Card: MSI Radeon R9 270X 2GB TWIN FROZR Video Card ($154.99 @ Newegg)
Case: Corsair 200R ATX Mid Tower Case ($49.99 @ Newegg)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($49.99 @ NCIX US)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($16.98 @ OutletPC)
Monitor: AOC i2367Fh 60Hz 23.0" Monitor ($156.80 @ Amazon)
Keyboard: KeyTronic KT400U2 Wired Standard Keyboard ($9.96 @ OutletPC)
Mouse: Logitech M325 Wireless Laser Mouse ($18.00 @ Amazon)
Speakers: Logitech Z313 25W 2.1ch Speakers ($34.99 @ Amazon)
Total: $957.30
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-21 17:46 EST-0500

Generally the 'sweet' spot in efficiency for the PSU's is in the 50-70% range, and the absolute low end like <10% is quite bad, but increases rapidly as the usage goes up so that usually at 20% the efficiency is already at a good level.

BigBuild229,

A GT740 would be somewhat redundant on the FM2+ platform. Just use an A10-7850K or A10-7700K instead of the 860K and you'll have a very comparable performing GPU built right in (iGPU).

I would only advise going with a discrete GPU on this platform if you have a specific workload that is going to scale really well with a big powerful discrete GPU. (gaming, for example). Video editing can scale with GPU's, but that's very application or condition specific so it's not generally a good idea to just randomly pick a big GPU without first investigating application level support, API requirements, driver influence, performance scaling, etc. The iGPU on an A10 will provide a good "launch point" to aid in image and video manipulation that is openGL and openCL accelerated. GPU transcoding is another issue but that still has tradeoffs.

Switch the CPU HSF to a CM TX3, Arctic A11, Silverstone AR02, or Zalman CNPS5X at bare minimum for overclocking. Larger would be even better. The Arctic A30 and SilverStone AR01 are good choices, both leverage nice fat 8mm heatpipes.

The PSU you are looking for is the Seasonic G 360W.
I don't see the point of going modular for this class of PSU. There aren't enough cables involved to benefit from modular in a meaningful way, so the modularity simply becomes unnecessary failure points. Assuming you have no intentions of a big GPU upgrade, the G 360W is going to be fine and have plenty of headroom to overclock the 7850K.

At the price point of the G43, the BIOSTAR Hi-Fi A88W 3D is actually a better board (better bios for performance tuning, better features/quality in several ways). If you can take some of the savings from eliminating the GT740 and swing it towards the motherboard you'd be in the premium class of board options for this platform like the GIGABYTE GA-F2A88X-UP4 and ASRock FM2A88X Extreme6+, these alternatives will be much better suited to oveclocking/tuning and come with great quality onboard sound.

I totally appreciate your instinct on the iGPU issue. The idea of a "good" iGPU has been pretty foreign until recently. The iGPU in a Kaveri A10-7850K isn't like the junk of old. In fact, it has a wider core configuration than an R7 250. The iGPU is so "big" it is actually hamstrung by the system memory bandwidth, as such, it basically "bottlenecks" at a performance level comparable to high end DDR3 GPU's... A GT740 DDR3 edition would be about equal, and a GT740GDDR5 edition would be a bit stronger, but for your use it's all so similar it wouldn't make any difference.

As far as the warranty issue... Youre going to void your warranty the second you start tinkering with the thing. You mentioned an interest in overclocking. I'd rather void my 1 year warranty on the board that has awesome performance tuning options than void the 3 year warranty on one that is mediocre. Some MSI FM2+ boards don't even have manual voltage controls (not sure specifically about the G43...) The 3 boards I mentioned are all going to be better for performance tuning.

As far as BIOS support for your CPU. If you're worried about BIOS support for the A10-7850K, then you should be even MORE worried about BIOS support for the Steamroller based 860K, as it was released even later than the 7850K, and is more likely to be unsupported than the 7850K out of the box.

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If you're seriously thinking you want more raw grunt for video work (transcoding), lets talk AM3+ 970 chipset and FX-8320E. Then you'll have to get a dGPU anyway

Try not to get too roped into the misconception that "video card" is synonymous with "video editing." Until recently, the only thing the video card did related to video was provide a fixed function decoder for playback (which is the SAME across entire model ranges of GPUs, for example, a GT740 has the same video decoder as a GTX780Ti). Leveraging the GPU to accelerate the rendering of manipulated video (transitions/effects/adjustments) is still in its infancy in many ways, with varied performance benefits depending on conditions. Performance scaling from high end GPUs is typically poor. Furthermore, GPU accelerated transcoding is a quality trade-off vs traditional CPU transcoding, which still provides the most aggressive compression vs quality outcome options.

The FX-83XX series are very strong in video transcoding as it's one of those workloads that has developed good hardware specific branches of optimized code. A $140 FX-8320E can transcode like a $180-200 i5. Not bad. Depending on the motherboard selection, you can even pair these with ECC system memory for greater compute accuracy and reliability.

If you use Premiere or other Adobe CS stuff, nVidia is also a consideration. As far as I know the CS suite does not use OpenCL in most cases, only CUDA. Don't know about the Creative Cloud.

Also, the FX8320 could be much better for video editing and Pro Tools. I would say the four additional cores could offer a significant advantage over the budget Athlon II. Its about as fast as the Phenom II 965 I have now and I'm starting to feel the need to upgrade.

AMD R9 270X is only useful if you're really gaming. For a productivity/workstation solution I would go for GTX750, depending on what software you use. EIther that or the R7 260X.

Also, is this your only computer? It's always best to use old parts like DVD drives or even the case.