Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case, comes with Three Fans-1x Front Blue LED 120mm Fan, 1x Top 140mm Fan, 1x Rear 120mm Fan, option Fans-2x Side 120mm Fan http://www.newegg.com/Product/Prod [...] 6811147153
No thanks necessary --- appreciated all the same.
Many years ago, and almost as many forum restructures, Toms Hardware got me up and running. (Before 500MHz CPUs, and as far back as 25MHz ones).
People here tend to over estimate the power supply, which there is nothing wrong with as it leaves headroom.
Todays PSUs are 80% efficient (minimum) from idle to peak, and often 90% efficient at 71% load.
One simple trick is to base your consumption on the model of GPU higher than you're aiming for:
For a system using a single GeForce GTX 650 Ti graphics card NVIDIA specifies a minimum of a 400 Watt or greater power supply that has a combined +12 Volt continuous current rating of 20 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.
Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C-50°C ambient temperature, is the most important factor.
Overclocking of the CPU and/or GPU(s) will require an additional increase to the combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock you are trying to achieve.
The Corsair Builder Series CX430 (CP-9020046-WW), with its combined +12 Volt continuous current rating of 32 Amps and with one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single GeForce GTX 650 Ti.