> RAM- DDR3 Crucial Ballistix Sport 8GB 1600MHz CL9 1.5V

Galima pagalvoti ir apie 1.35V (toks jausmas, kad ateityje, 
kiek jos dar liko iki DDR4 jis galbut bus tinkamesnis).
Taip pat apie 2vnt. del dual channel (tuo labiau, kad RAM truputi atpiges).

> MB- asus H81M-A

Ko gero OK, elementari, jungtys (t.y. ju ivairove/kiekis OK)
https://en.wikipedia.org/wiki/LGA_1150 << t.y. USB3.0 by default tik du priklauso.

> CPU- intel core i3 4160 box, 3.6gHz, 3 mb

Berods i3-4170 uz is esmes tiek pat. Del pritempimo iki i5 - tavo $ reikalas.
Fonui vartyt ir silpnesnis nei i3 gal tiktu, kazka sunkaus ar geimams - labiau i5 noretusi.
Imti i3 vien del truputi stipresnes intelines videlkos kaip ir negausiai apsimoka.

  41.49 € / 143.26 Lt -   G1840 2C/2T 2.80GHz, 2MB, DDR3-1333, Intel HD (10EU) 
  57.29 € / 197.81 Lt -   G3250 2C/2T 3.20GHz, 3MB, DDR3-1333, Intel HD (10EU)
  68.79 € / 237.52 Lt -   G3450 2C/2T 3.40GHz, 3MB, DDR3-1600, Intel HD (10EU)
  69.89 € / 241.32 Lt -   G3258 2C/2T 3.20GHz, 3MB, DDR3-1333, Intel HD (10EU), unclocked
120.29 € / 415.34 Lt - i3-4170 2C/4T 3.70GHz, 3MB, DDR3-1600, Intel HD4400 (20EU)
121.89 € / 420.86 Lt - i3-4160 2C/4T 3.60GHz, 3MB, DDR3-1600, Intel HD4400 (20EU)
136.89 € / 472.65 Lt - i3-4330 2C/4T 3.50GHz, 4MB, DDR3-1600, Intel HD4600 (20EU)
194.79 € / 672.57 Lt - i5-4460 4C/4T 3.20GHz, 6MB, DDR3-1600, Intel HD4600 (20EU) + Dovana: 5 PC Žaidimai

https://en.wikipedia.org/wiki/List_of_Intel_graphics_processing_units#Seventh_generation
https://en.wikipedia.org/wiki/Intel_HD_and_Iris_Graphics#Haswell
HD Graphics – GT1, 10 execution units, up to 184 GFLOPS at 1150 MHz
HD Graphics 4200, 4400, 4600, P4600, P4700 – GT2, 20 execution units, up to 432 GFLOPS at 1350 MHz