recommend a system for 650$ just cpu ram vga mb

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($176.98 @ NCIX US)
Motherboard: Gigabyte GA-H97-D3H ATX LGA1150 Motherboard ($86.99 @ SuperBiiz)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($49.99 @ Newegg)
Video Card: EVGA GeForce GTX 970 4GB SSC ACX 2.0 Video Card ($338.98 @ Newegg)
Total: $652.94
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-04 16:21 EDT-0400

Should max most anything at 1080p.

Cheers
 


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PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($176.98 @ NCIX US)
Motherboard: ASRock Fatal1ty H97 Killer ATX LGA1150 Motherboard ($90.98 @ Newegg)
Fatal1ty%20Z97%20Killer.jpg

Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($49.99 @ Newegg)
Fatal1ty%20Z97%20Killer.jpg

Video Card: MSI GeForce GTX 970 4GB Twin Frozr V Video Card ($339.99 @ SuperBiiz)
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Total: $657.94
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-06-04 16:59 EDT-0400

Notes:

- MSI GTX 970 with Twin Frozr V is the best cooling tech that offers near silent operation, performance and durability.

Cheers!