Both the CPUs you listed are Sandybridge, old tech. My $230 i5-3570K walks over them both, before even overclocking.
Without going really overboard (I'm talking spending an extra $300-500 per component for 1-2% better performance):
Either an
i5-3570K or an
i7-3770K.
For the $100 price difference, you gain hyper-threading, 100mhz clock increase, and an 8mb cache instead of 6mb.
Get nothing older then a z77 chipset motherboard.
I moved from Asus to Gigabyte boards almost five years ago and have been very happy.
I personally recommend either the
GA-Z77X-UD3H or the
GA-Z77X-UD5H. Both benchmark higher then their competitors.
This really depends on what features you are looking for.
If you let me know what features you want from a motherboard, I can offer up some other suggestions from Asus.
It is very worthwhile going with a solidstate drive. I plan to run two in a raid 0 soon to see how well 1gb/s transfers work out
Pretty much unless you want to pay the premium for the
Intel 330 or 520 drives I would look at the
OCZ Vertex 3 or 4 drives.
At the current technology, you should expect a minimum of 500MB/s sustained read speeds. This requires SATA3. Ignore any drives which are SATA2 or advertise slower speeds.
Your GTX280 won't cut it anymore. Look at either GTX670 or GTX680 based cards.
ASUS 680s
eVGA 680s
ASUS 670s
eVGA 670s
I personally like eVGA over ASUS on video card designs. More options, factory overlock models, slightly better shroud and fan designs.
Memory.... buy at least 16gb. It's about as cheap as it's going to get right now so you might as well nab a matched set. Get as many DIMMs as your board can take. Four 4gb sticks have less latency then two 8gb sticks.
Get the fastest that your board can support with the lowest latency. Choices depend on what motherboard you go with, but stick with Corsair or G.Skill.
Decent DDR3 2400 options:
G.Skill or
Corsair
Your 1000W psu is overkill, but will be fine as long as it's not much older then four-five years and not made by a no-name Chinese brand. If you want to replace, 700+ watts will be fine, Corsair and Antec are very good.
The stock cooler on Intel CPUs are fine if you don't plan to overclock. If you do overclock or for some other reason want a non-stock cooler, the best value right now is the
Coolermaster Hyper 212 Evo. There are better options but they cost two-three times as much and only cool an additional 1-2 degrees at load. Avoid the water cooling kits like the Corsairs. They are louder then passive options, don't cool as well and cost a lot more. Only times they are worth while are when you are using cases with poor air flow and you can get away with a front-mount installation (like in a rack-mount case). Match with a good compound like
Arctic Silver 5 or
Arctic Cooling MX-4. Reapply every 18 months if you overclock.
Don't know why you need a new case, they haven't changed.
Find a nice Antec, be happy.. Airflow is important, front bottom in, top back out. Open style and skeleton cases are horrible for this.
Your keyboard is garbage and needs to be replaced. Buy a Filco or a Ducky. NewEgg doesn't stock either cause they are pussies.
That's about it off the top of my head.