03-11-2011, 02:07 PM
Aside from fixing a few links to accommodate 1155 motherboards being sold again, this is up to date and last had a major change on 2/13/11. We'll have to see how the 590/6990 performs on a larger scale and price/performance wise, so I haven't really considered adding them yet. I don't know why but the costs of a lot of components has went up 5 or 10 dollars since I made those builds for some reason, so unfortunately the builds will be on the higher-end of the budget range. (e.g. 500-600 build close to 600, 600-700 build close to 700 etc) It wasn't always like this. Next time a new series of cards or processors (probably Bulldozer) comes out I'll revamp it again. Remember that prices do fluctuate, and when some of the SB mobos were fixed their price went up.
Last updated: 3/11/11
$300-400
$400-500
$500-600
$600-700
$700-800
The following boards utilize 1155 mobos, and since their 3gbps problem has been fixed, many of them have raised in price so the real price of these builds could be slightly higher (and even go into the next price range) in price. Again, I won't bother to fix these until something is released that requires me to rewrite the entire guide.
$800-900
$900-$1000
$1000-1100
Low-end "Dream Machine"
Med-end "Dream Machine"
High-end "Dream Machine"
I don't even know what I'm doing anymore "Dream Machine"
You can go ahead and change these builds to your liking, but there are a few things to take into consideration when buying components.
Do NOT buy an AMD CPU on a high end machine ($800+), Intel processors perform much better when you get into high-end CPUs. Always remember that GHz/Cores are not the only determining factors in CPU performance.
Avoid Seagate HDDs, most importantly the Barracuda series.
Do NOT buy a shiny/fancy case, they often cost more and have worse airflow/perform worse than a case that is "duller" and cheaper.
Do NOT buy a cheap Chinese brand of PSU. If it's not Antec/OCZ/Corsair/XFX/Seasonic, then try to stay away from it. There are other nice brands but these are generally guaranteed to be of good quality.
Do NOT buy (PSUs aside) according to a brand. No matter how much you like x brand, if y brand is better then buy y brand.
Do NOT buy an SSD unless you have a very high budget, and never sacrifice other components to buy one.
Do NOT pair different types of ram with eachother/buy triple-channel ram for a dual-channel motherboard. If you buy 2GB of G.Skill ram and want 4GB, buy the same kind of ram.
Last updated: 3/11/11
$300-400
Spoiler (Click to View)
Motherboard - MSI 870-G45 - $70
http://www.newegg.com/Product/Product.as...6813130290
CPU - Athlon X2 255 - $63
http://www.newegg.com/Product/Product.as...6819103896
GPU - HD 4670 - $65
http://www.newegg.com/Product/Product.as...6814102855
PSU - Antec EarthWatts 380W - $45
http://www.newegg.com/Product/Product.as...6817371033
Case - HAF 912 - $60
http://www.newegg.com/Product/Product.as...6811119233
RAM - 1x2GB 1333 - $24
http://www.newegg.com/Product/Product.as...6820104216
HDD - 500GB WD Caviar Blue - $40
http://www.newegg.com/Product/Product.as...6822136073
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $386 with DVD Burner
Total: $367 without DVD Burner
http://www.newegg.com/Product/Product.as...6813130290
CPU - Athlon X2 255 - $63
http://www.newegg.com/Product/Product.as...6819103896
GPU - HD 4670 - $65
http://www.newegg.com/Product/Product.as...6814102855
PSU - Antec EarthWatts 380W - $45
http://www.newegg.com/Product/Product.as...6817371033
Case - HAF 912 - $60
http://www.newegg.com/Product/Product.as...6811119233
RAM - 1x2GB 1333 - $24
http://www.newegg.com/Product/Product.as...6820104216
HDD - 500GB WD Caviar Blue - $40
http://www.newegg.com/Product/Product.as...6822136073
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $386 with DVD Burner
Total: $367 without DVD Burner
$400-500
Spoiler (Click to View)
Motherboard - MSI 870-G45 - $70
http://www.newegg.com/Product/Product.as...6813130290
CPU - Phenom X2 555 BE (with extra cores unlocked into a quad-core) - $90
http://www.newegg.com/Product/Product.as...6819103846
GPU - 5770 - $120
http://www.newegg.com/Product/Product.as...6814131330
PSU - Antec EarthWatts 380W - $40
http://www.newegg.com/Product/Product.as...6817371033
Case - Thermaltake V4 - $50
http://www.newegg.com/Product/Product.as...6811133179
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Blue - $50
http://www.newegg.com/Product/Product.as...6822136073
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $494 with DVD Burner
Total: $474 without DVD Burner
http://www.newegg.com/Product/Product.as...6813130290
CPU - Phenom X2 555 BE (with extra cores unlocked into a quad-core) - $90
http://www.newegg.com/Product/Product.as...6819103846
GPU - 5770 - $120
http://www.newegg.com/Product/Product.as...6814131330
PSU - Antec EarthWatts 380W - $40
http://www.newegg.com/Product/Product.as...6817371033
Case - Thermaltake V4 - $50
http://www.newegg.com/Product/Product.as...6811133179
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Blue - $50
http://www.newegg.com/Product/Product.as...6822136073
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $494 with DVD Burner
Total: $474 without DVD Burner
$500-600
Spoiler (Click to View)
Motherboard - MSI 870A-G54 - $100
http://www.newegg.com/Product/Product.as...6813130275
CPU - Phenom II X2 560 BE (with extra cores unlocked into a quad-core) - $105
http://www.newegg.com/Product/Product.as...6819103887
GPU - HD 5770 - $120
http://www.newegg.com/Product/Product.as...6814131330
PSU - Seasonic 520W - $70
http://www.newegg.com/Product/Product.as...6817151094
Case - Centurion 5 II - $70
http://www.newegg.com/Product/Product.as...6811119228
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $594 with DVD Burner
Total: $575 without DVD Burner
http://www.newegg.com/Product/Product.as...6813130275
CPU - Phenom II X2 560 BE (with extra cores unlocked into a quad-core) - $105
http://www.newegg.com/Product/Product.as...6819103887
GPU - HD 5770 - $120
http://www.newegg.com/Product/Product.as...6814131330
PSU - Seasonic 520W - $70
http://www.newegg.com/Product/Product.as...6817151094
Case - Centurion 5 II - $70
http://www.newegg.com/Product/Product.as...6811119228
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $594 with DVD Burner
Total: $575 without DVD Burner
$600-700
Spoiler (Click to View)
Motherboard - MSI 870A-G54 - $100
http://www.newegg.com/Product/Product.as...6813130275
CPU - Phenom II X4 955 BE - $140
http://www.newegg.com/Product/Product.as...6819103808
GPU - GTX 460 SE (1GB) - $150
http://www.newegg.com/Product/Product.as...6814261088
PSU - Seasonic 520W - $75
http://www.newegg.com/Product/Product.as...6817151094
Case - CM690 II - $80
http://www.newegg.com/Product/Product.as...6811119215
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $674 with DVD Burner
Total: $655 without DVD Burner
http://www.newegg.com/Product/Product.as...6813130275
CPU - Phenom II X4 955 BE - $140
http://www.newegg.com/Product/Product.as...6819103808
GPU - GTX 460 SE (1GB) - $150
http://www.newegg.com/Product/Product.as...6814261088
PSU - Seasonic 520W - $75
http://www.newegg.com/Product/Product.as...6817151094
Case - CM690 II - $80
http://www.newegg.com/Product/Product.as...6811119215
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $674 with DVD Burner
Total: $655 without DVD Burner
$700-800
Spoiler (Click to View)
Motherboard - MSI 870A-G54 - $100
http://www.newegg.com/Product/Product.as...6813130275
CPU - Phenom II X4 955 BE - $140
http://www.newegg.com/Product/Product.as...6819103808
GPU - GTX 560 Ti - $250
http://www.newegg.com/Product/Product.as...6814121424
PSU - Seasonic 620W - $85
http://www.newegg.com/Product/Product.as...6817151096
Case - CM690 II - $70
http://www.newegg.com/Product/Product.as...6811119215
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $774 with DVD Burner
Total: $754 without DVD Burner
http://www.newegg.com/Product/Product.as...6813130275
CPU - Phenom II X4 955 BE - $140
http://www.newegg.com/Product/Product.as...6819103808
GPU - GTX 560 Ti - $250
http://www.newegg.com/Product/Product.as...6814121424
PSU - Seasonic 620W - $85
http://www.newegg.com/Product/Product.as...6817151096
Case - CM690 II - $70
http://www.newegg.com/Product/Product.as...6811119215
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $774 with DVD Burner
Total: $754 without DVD Burner
The following boards utilize 1155 mobos, and since their 3gbps problem has been fixed, many of them have raised in price so the real price of these builds could be slightly higher (and even go into the next price range) in price. Again, I won't bother to fix these until something is released that requires me to rewrite the entire guide.
$800-900
Spoiler (Click to View)
Motherboard - GIGABYTE GA-P67A-UD3 - $130
http://www.newegg.com/Product/Product.as...6813128476
CPU - i5 2500K - $220
http://www.newegg.com/Product/Product.as...6819115072
GPU - GTX 560 Ti - $250
http://www.newegg.com/Product/Product.as...6814121424
PSU - Seasonic 620W - $85
http://www.newegg.com/Product/Product.as...6817151096
Case - CM690 II - $80
http://www.newegg.com/Product/Product.as...6811119215
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $894 With DVD Burner
Total: $875 Without DVD Burner
http://www.newegg.com/Product/Product.as...6813128476
CPU - i5 2500K - $220
http://www.newegg.com/Product/Product.as...6819115072
GPU - GTX 560 Ti - $250
http://www.newegg.com/Product/Product.as...6814121424
PSU - Seasonic 620W - $85
http://www.newegg.com/Product/Product.as...6817151096
Case - CM690 II - $80
http://www.newegg.com/Product/Product.as...6811119215
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $894 With DVD Burner
Total: $875 Without DVD Burner
$900-$1000
Spoiler (Click to View)
Motherboard - GIGABYTE GA-P67A-UD3 - $130
http://www.newegg.com/Product/Product.as...6813128476
CPU - i5 2500K - $220
http://www.newegg.com/Product/Product.as...6819115072
GPU - GTX 570 - $340
http://www.newegg.com/Product/Product.as...6814133370
PSU - Seasonic 620W - $85
http://www.newegg.com/Product/Product.as...6817151096
Case - CM690 II - $80
http://www.newegg.com/Product/Product.as...6811119215
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $984 With DVD Burner
Total: $965 Without DVD Burner
http://www.newegg.com/Product/Product.as...6813128476
CPU - i5 2500K - $220
http://www.newegg.com/Product/Product.as...6819115072
GPU - GTX 570 - $340
http://www.newegg.com/Product/Product.as...6814133370
PSU - Seasonic 620W - $85
http://www.newegg.com/Product/Product.as...6817151096
Case - CM690 II - $80
http://www.newegg.com/Product/Product.as...6811119215
RAM - 2x2GB 1333 - $50
http://www.newegg.com/Product/Product.as...6820145251
HDD - 500GB WD Caviar Black - $60
http://www.newegg.com/Product/Product.as...6822136320
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $984 With DVD Burner
Total: $965 Without DVD Burner
$1000-1100
Spoiler (Click to View)
Motherboard - ASUS P8P67 Pro - $190
http://www.newegg.com/Product/Product.as...6813131682
CPU - i5 2500K - $220
http://www.newegg.com/Product/Product.as...6819115072
GPU - GTX 570 - $340
http://www.newegg.com/Product/Product.as...6814133370
PSU - Seasonic 620W - $85
http://www.newegg.com/Product/Product.as...6817151096
Case - Lian Li K58 - $80
http://www.newegg.com/Product/Product.as...6811112237
RAM - 2x2GB 1600 - $50
http://www.newegg.com/Product/Product.as...6820145260
HDD - 1TB WD Caviar Black - $88
http://www.newegg.com/Product/Product.as...6822136284
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $1072 With DVD Burner
Total: $1053 Without DVD Burner
http://www.newegg.com/Product/Product.as...6813131682
CPU - i5 2500K - $220
http://www.newegg.com/Product/Product.as...6819115072
GPU - GTX 570 - $340
http://www.newegg.com/Product/Product.as...6814133370
PSU - Seasonic 620W - $85
http://www.newegg.com/Product/Product.as...6817151096
Case - Lian Li K58 - $80
http://www.newegg.com/Product/Product.as...6811112237
RAM - 2x2GB 1600 - $50
http://www.newegg.com/Product/Product.as...6820145260
HDD - 1TB WD Caviar Black - $88
http://www.newegg.com/Product/Product.as...6822136284
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $1072 With DVD Burner
Total: $1053 Without DVD Burner
Low-end "Dream Machine"
Spoiler (Click to View)
Motherboard - ASUS P8P67 Pro - $190
http://www.newegg.com/Product/Product.as...6813131682
CPU - i7 2600k - $330
http://www.newegg.com/Product/Product.as...6819115070
GPU - GTX 570 - $340
http://www.newegg.com/Product/Product.as...6814133370
PSU - Antec 750W - $130
http://www.newegg.com/Product/Product.as...6817371022
Case - HAF 932 - $140
http://www.newegg.com/Product/Product.as...6811119160
RAM - 4x2GB 1600 - $100
[urlhttp://www.newegg.com/Product/Product.aspx?Item=N82E16820145261[/url]
HDD - 1TB WD Caviar Black - $88
http://www.newegg.com/Product/Product.as...6822136284
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $1337 With DVD Burner
Total: $1218 Without DVD Burner
http://www.newegg.com/Product/Product.as...6813131682
CPU - i7 2600k - $330
http://www.newegg.com/Product/Product.as...6819115070
GPU - GTX 570 - $340
http://www.newegg.com/Product/Product.as...6814133370
PSU - Antec 750W - $130
http://www.newegg.com/Product/Product.as...6817371022
Case - HAF 932 - $140
http://www.newegg.com/Product/Product.as...6811119160
RAM - 4x2GB 1600 - $100
[urlhttp://www.newegg.com/Product/Product.aspx?Item=N82E16820145261[/url]
HDD - 1TB WD Caviar Black - $88
http://www.newegg.com/Product/Product.as...6822136284
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $1337 With DVD Burner
Total: $1218 Without DVD Burner
Med-end "Dream Machine"
Spoiler (Click to View)
Motherboard - GIGABYTE GA-P67A-UD7 - $320
(There is no URL due to the recent SATA problem with Sandy Bridge motherboards. I advise you wait until these are fixed if you are planning on ordering a computer with a budget of $800+)
CPU - i7 2600k - $330
http://www.newegg.com/Product/Product.as...6819115070
GPU - GTX 570x2 - $680
http://www.newegg.com/Product/Product.as...6814133370
PSU - XFX Black Edititon 850W - $150
http://www.newegg.com/Product/Product.as...6817207001
Case - HAF X - $190
http://www.newegg.com/Product/Product.as...6811119225
RAM - 4x2GB 1600 - $100
[urlhttp://www.newegg.com/Product/Product.aspx?Item=N82E16820145261[/url]
HDD - 1TB WD Caviar Black - $88
http://www.newegg.com/Product/Product.as...6822136284
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $1717 With DVD Burner
Total: $1688 Without DVD Burner
(There is no URL due to the recent SATA problem with Sandy Bridge motherboards. I advise you wait until these are fixed if you are planning on ordering a computer with a budget of $800+)
CPU - i7 2600k - $330
http://www.newegg.com/Product/Product.as...6819115070
GPU - GTX 570x2 - $680
http://www.newegg.com/Product/Product.as...6814133370
PSU - XFX Black Edititon 850W - $150
http://www.newegg.com/Product/Product.as...6817207001
Case - HAF X - $190
http://www.newegg.com/Product/Product.as...6811119225
RAM - 4x2GB 1600 - $100
[urlhttp://www.newegg.com/Product/Product.aspx?Item=N82E16820145261[/url]
HDD - 1TB WD Caviar Black - $88
http://www.newegg.com/Product/Product.as...6822136284
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
Total: $1717 With DVD Burner
Total: $1688 Without DVD Burner
High-end "Dream Machine"
Spoiler (Click to View)
Motherboard - ASUS Maximum IV Extreme - $360
(There is no URL due to the recent SATA problem with Sandy Bridge motherboards. I advise you wait until these are fixed if you are planning on ordering a computer with a budget of $800+)
CPU - i7 2600k - $330
http://www.newegg.com/Product/Product.as...6819115070
GPU - GTX 570x2 - $680
http://www.newegg.com/Product/Product.as...6814133370
PSU - XFX Black Edititon 850W - $150
http://www.newegg.com/Product/Product.as...6817207001
Case - Fortress FT02 - $250
http://www.newegg.com/Product/Product.as...6811163161
RAM - 4x2GB 1600 - $100
http://www.newegg.com/Product/Product.as...6820145261
HDD - 1TB WD Caviar Black - $88
http://www.newegg.com/Product/Product.as...6822136284
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
SSD - 120GB OCZ - $230
http://www.newegg.com/Product/Product.as...6820227551
Total with DVD Burner: $2207
Total without DVD Burner: $2188
(There is no URL due to the recent SATA problem with Sandy Bridge motherboards. I advise you wait until these are fixed if you are planning on ordering a computer with a budget of $800+)
CPU - i7 2600k - $330
http://www.newegg.com/Product/Product.as...6819115070
GPU - GTX 570x2 - $680
http://www.newegg.com/Product/Product.as...6814133370
PSU - XFX Black Edititon 850W - $150
http://www.newegg.com/Product/Product.as...6817207001
Case - Fortress FT02 - $250
http://www.newegg.com/Product/Product.as...6811163161
RAM - 4x2GB 1600 - $100
http://www.newegg.com/Product/Product.as...6820145261
HDD - 1TB WD Caviar Black - $88
http://www.newegg.com/Product/Product.as...6822136284
DVD Drive - ASUS 24X DVD Burner - $19
http://www.newegg.com/Product/Product.as...6827135204
SSD - 120GB OCZ - $230
http://www.newegg.com/Product/Product.as...6820227551
Total with DVD Burner: $2207
Total without DVD Burner: $2188
I don't even know what I'm doing anymore "Dream Machine"
Spoiler (Click to View)
Motherboard- ASUS Z8PE-D18 - $440
http://www.newegg.com/Product/Product.as...6813131379
CPU - Intel Xeon X5680x2 - $3400
http://www.newegg.com/Product/Product.as...6819117228
GPU - Quadro 6000x4 - $15,200
http://www.newegg.com/Product/Product.as...6814133347
SSD - 1TB OCZ Colossusx6 - $18,300
http://www.newegg.com/Product/Product.as...6820227515
RAM - Patriot Signature 16GBx9 - $4,320
http://www.newegg.com/Product/Product.as...6820220554
PSU - Silverstone 1500Wx2 - $760
http://www.newegg.com/Product/Product.as...6817256054
GPU Cooling - Accelero XTREME Plusx4 - $300 (with VR004)
http://www.newegg.com/Product/Product.as...6835186043
CPU Cooling - Intel BXSTS100Cx2 + AS5x2 - $96
http://www.newegg.com/Product/Product.as...6835203001
http://www.newegg.com/Product/Product.as...6835100007
DVD Burner - Sony 12x bluray burner - $160
http://www.newegg.com/Product/Product.as...6827118049
Total: $42,976
http://www.newegg.com/Product/Product.as...6813131379
CPU - Intel Xeon X5680x2 - $3400
http://www.newegg.com/Product/Product.as...6819117228
GPU - Quadro 6000x4 - $15,200
http://www.newegg.com/Product/Product.as...6814133347
SSD - 1TB OCZ Colossusx6 - $18,300
http://www.newegg.com/Product/Product.as...6820227515
RAM - Patriot Signature 16GBx9 - $4,320
http://www.newegg.com/Product/Product.as...6820220554
PSU - Silverstone 1500Wx2 - $760
http://www.newegg.com/Product/Product.as...6817256054
GPU Cooling - Accelero XTREME Plusx4 - $300 (with VR004)
http://www.newegg.com/Product/Product.as...6835186043
CPU Cooling - Intel BXSTS100Cx2 + AS5x2 - $96
http://www.newegg.com/Product/Product.as...6835203001
http://www.newegg.com/Product/Product.as...6835100007
DVD Burner - Sony 12x bluray burner - $160
http://www.newegg.com/Product/Product.as...6827118049
Total: $42,976
You can go ahead and change these builds to your liking, but there are a few things to take into consideration when buying components.
Do NOT buy an AMD CPU on a high end machine ($800+), Intel processors perform much better when you get into high-end CPUs. Always remember that GHz/Cores are not the only determining factors in CPU performance.
Avoid Seagate HDDs, most importantly the Barracuda series.
Do NOT buy a shiny/fancy case, they often cost more and have worse airflow/perform worse than a case that is "duller" and cheaper.
Do NOT buy a cheap Chinese brand of PSU. If it's not Antec/OCZ/Corsair/XFX/Seasonic, then try to stay away from it. There are other nice brands but these are generally guaranteed to be of good quality.
Do NOT buy (PSUs aside) according to a brand. No matter how much you like x brand, if y brand is better then buy y brand.
Do NOT buy an SSD unless you have a very high budget, and never sacrifice other components to buy one.
Do NOT pair different types of ram with eachother/buy triple-channel ram for a dual-channel motherboard. If you buy 2GB of G.Skill ram and want 4GB, buy the same kind of ram.