I have been a long time lurker on these boards and would like some feedback on a new build I am planning. I am in New Zealand so haven't used newegg, but a local price comparison site. I haven't built a PC "ground-up" before, although I have replaced everything in my current rig except the mobo so would appreciate constuctive feedback positive or negative.
APPROXIMATE PURCHASE DATE: hopefully before Christmas if funds permit
BUDGET RANGE: lenient, would not like to go above NZ$3000 but I don't know how that translates to USD!
SYSTEM USAGE FROM MOST TO LEAST IMPORTANT: Gaming, watching Movies, surfin
PARTS NOT REQUIRED: Keyboard, mouse, monitor, speakers
OVERCLOCKING: Yes - although haven't done before SLI OR CROSSFIRE: Yes although not necessary immediately.
MONITOR RESOLUTION: 1920x1080
ADDITIONAL COMMENTS: Would like to know if there is anywhere I can get more "bang for my buck", I am not confident with memory so not sure I have the right one, GPU also because there are just so many out there. Would like to trim some cost if there is anything unecessary but don't mind paying slightly more if the performance would be worth it.
With the current exchange that's roughly 2,200 USD.
DPaul8 is correct. While the i7-920/X58 does offer slightly better performance, it is rarely worth the extra money. You really only need the X58 setup if you plan to use several graphics cards, or if you are using your machine for video editing, photo editing, or high-end development which will take advantage of the hyperthreading and triple-channel RAM. Otherwise your money is better spent on the graphics card.
Go for the i5-750 for your CPU, and buy a good heatsink. For a motherboard, look at the GA-P55A-??? Series as they have been ranked very high in performance and include support for USB 3.0 and SATA 6.
The i7-920 is old technology which is past its prime. Next year, Intel will be coming out with the i9 processors, but these will be very expensive because they are not aimed at the home PC market.
The i5-750 is new technology which performs better than the i7-920 for single graphics cards, and equally well for systems with two graphics cards. Its a no-brainer, get better or equal performance at a cheaper price with the i5-750.
Keep in mind that the P55 motherboards for the i750 tend to be substantially cheaper than the X58 motherboards for the i920. In addition, for gaming you only need to buy two sticks of DDR3 ram for the P55 motherboard compared with three sticks for most X58 boards, which save even more money for the same performance. You should be able to save about $200 USD when you take into account the cost savings associated with the differences between the processors ($90), the motherboards ($80), and the RAM (2 versus 3 sticks, $30). Thats not a bad deal considering you are not sacrificing anything in performance!
The Gigabyte UD6 is a top of the line motherboard aimed at users who want to get the absolute most out of overclocking. The Gigabyte UD4P will save you a few dollars and will still let you overclock the processor. The UD4P, as well as the UD6, support either SLI or Crossfire for use with two video cards. Both are good choices.
The Corsair 650HX is one of the best power supplies available. It will easily handle one graphics card, and should be OK for two graphics cards. However, if two graphics cards are in your future, then you should consider upgrading to a 750 W unit. The 5850 graphics card is also a fine choice.