you’re crazy if you’re planning to buy such good ram and processors and running on integrated chipsets, it’ll bottleneck your system to hell
the following is my current computer i just built a month back, took a while looking for good parts and it totals up at 577$, obviously that’s a little over but the GPU and operating system are the main costs (100$ windows 7, 120$ TOP4850)
[GPU]
https://www.newegg.com/Product/Product.aspx?Item=N82E16814121380&cm_re=4850--14-121-380--Product ATI 4850 1GB
120$ IN STOCK (107$ with rebate)
[HARD DRIVE]
Western Digital Caviar Green WD5000AADS 500GB https://www.newegg.com/Product/Product.aspx?Item=N82E16822136358
in stock 55$
[OPERATING SYSTEM]
windows 7 https://www.newegg.com/Product/Product.aspx?Item=N82E16832116754
in stock 100$ free shipping
[MOTHERBOARD]
ASUS M4A785-M AM3/AM2+/AM2 AMD 785G HDMI Micro ATX AMD Motherboard https://www.newegg.com/Product/Product.aspx?Item=N82E16813131595
in stock 70$
[CASE]
Thermaltake V3 Black Edition VL80001W2Z Black SECC / Plastic ATX Mid Tower Computer Case https://www.newegg.com/Product/Product.aspx?Item=N82E16811133094
in stock 45$
[PROCESSOR]
MD Phenom II X4 945 Deneb 3.0GHz 4 x 512KB https://www.newegg.com/Product/Product.aspx?Item=N82E16819103809
in stock 140$
[RAM]
Crucial Ballistix 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 https://www.newegg.com/Product/Product.aspx?Item=N82E16820148212
in stock 82$
[PSU]
ROSEWILL 600W https://www.newegg.com/Product/Product.aspx?Item=N82E16817182032
FROM OLD COMP
577 dollars total
you could probably look around for cheaper memory or processors (buy amd, it’s MUCH MUCH MUCH cheaper for budget cpus and run just as well if not better in mid-high tier gaming)
an AX5550 could probably fare you quite well for CSS and general source engine games but obviously it’s a mid-tier budget card so you’ll eventually have to put some money out on a newer card
the specs i’ve given you run BC2 at 1080p high settings perfectly fine at around 40 FPS, but don’t expect to run anything too great if you cut it down.