Forget that Raidmax unit it's gonna be scrap. On newegg there is some cheap units that are more worth it than the Raidmax:
PSU: COOLER MASTER eXtreme Power Plus RS500-PCAR-A3-US 500W
Review: http://www.hardwaresecrets.com/article/Cooler-Master-eXtreme-Power-Plus-500-W-Power-Supply-Review/728/1
Price: $34.99 with Rebate
Overall opinion: Scrap but still better than noname scrap.
PSU: COOLER MASTER GX Series RS650-ACAAE3-US 650W
Review: none available but the RS750 was really not recommended.
Price: $49.99 after mail-in rebate
Overall opinion: Scrap but still better than noname scrap.
PSU: Rosewill Green Series RG630-S12 630W
Review: http://www.hardwaresecrets.com/article/881
Price: $59.99 with FREE SHIPPING
Overall opinion: EXCELLENT quality, exceeds ATX and label specifications. This one is the new and better model. It is the only good power supply from Rosewill showing on newegg.
PSU: Antec Neo ECO 520C
Review: http://forums.guru3d.com/showthread.php?t=317192
Price: Now: $54.99 with $2.99 Shipping (restrictions apply)
Overall opinion: Decent performer and quality with very good ripple suppression...it's a Seasonic after all.
PSU: OCZ ModXStream Pro 600 W
Review: http://www.hardwaresecrets.com/article/OCZ-ModXStream-Pro-600-W-Power-Supply-Review/936/1
Price: $64.99 after mail-in rebate card with $2.99 Shipping (restrictions apply)
Overall opinion: Outstanding mainstream 600 W power supply, surprising us at all and every level.
PSU: CORSAIR Builder Series CX430 V2
Review: http://www.hardwaresecrets.com/article/Corsair-CX430-V2-Power-Supply-Review/1284
Price: $24.99 after mail-in rebate card with $1.99 Shipping (restrictions apply)
Overall opinion: Outstanding product, possibly the power supply with the best cost/benefit ratio we’ve ever seen.
Note: Only one 6 pin pci-e connector
PSU: CORSAIR Builder Series CX500 V2
Review: none found but it is the same generation as the CX430 V2
Price: $39.99 after mail-in rebate card with $2.99 Shipping (restrictions apply)
Overall opinion:
PSU: CORSAIR Builder Series CX600 V2
Review: none found but it is the same generation as the CX430 V2
Price: $49.99 after mail-in rebate card with $3.99 Shipping (restrictions apply)
Overall opinion:
PSU: SILVERSTONE ST50F-ES 500W
Review: http://www.techradar.com/reviews/pc-mac/pc-components/cases-cooling/power-supplies/silverstone-strider-essential-st50f-es-717134/review
Price: $49.99 after mail-in rebate with $9.20 Shipping (restrictions apply)
Overall opinion: Overall, this PSU
performed extremely well.
PSU: SILVERSTONE ST45SF 450W
Review: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=196
Price: $69.99 after mail-in rebate with $8.57 Shipping (restrictions apply)
Overall opinion: Overall it's
pretty good for it's price, could be better though.
PSU: COOLER MASTER Silent Pro M600
Review: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=134
Price: $69.99 after mail-in rebate with $2.99 Shipping (restrictions apply)
Overall opinion: Excellent power supply performance, good quality.
PSU: OCZ EliteXStream OCZ800EXS-B
Review: http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/7384-ocz-elitexstream-800w-power-supply-review.html
Price: $64.99 with $10.72 Shipping (restrictions apply)
That is 85$ saving!!!!!
Overall opinion: Solid performance, a 5-year warranty, ultra long cables, and quiet operation. Gets our Damn Good Value Award
PSU: OCZ GameXStream OCZ850GXSSLI-B
Review 1: http://www.tweaknews.net/reviews/ocz_gamexstream_850watt/
Review 2: http://www.cluboc.net/reviews/power/ocz/gamexstream850/index.htm
Price: $64.99 with $9.65 Shipping (restrictions apply)
Overall opinion: Excellent quality and performance. Only Cons: it's +12V rail exceeds ATX specification.
PSU: OCZ ModXStream Pro 500W
Review: http://www.hardwaresecrets.com/article/973
Price: $54.99 after mail-in rebate card with $2.99 Shipping (restrictions apply)
Overall opinion: Great performance and great quality. Excellent price/benefit ratio.
PSU: Antec High Current Gamer Series HCG-520
Review: http://www.anandtech.com/show/4343/antec-hcg-520-good-bargain
Price: $54.99 with FREE SHIPPING (restrictions apply)
Overall opinion: Great performance and quality. This one is made by Seasonic.
PSU: XFX Core Edition PRO550W (P1-550S-XXB9)
Review 1: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=216
Review 2: http://www.hardwareheaven.com/reviews/1042/pg1/xfx-pro-series-power-supplies-650w-750w-and-850w-review-introduction.html
Price: $49.99 after mail-in rebate with $5.99 Shipping (restrictions apply)
Overall opinion: Outstanding performer. Voltage regulation was excellent. Ripple suppression was excellent.
PSU: XFX Core Edition PRO650W (P1-650S-NLB9)
Review 1: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=216
Review 2: http://www.hardwareheaven.com/reviews/1042/pg1/xfx-pro-series-power-supplies-650w-750w-and-850w-review-introduction.html
Price: $59.99 after mail-in rebate with $5.99 Shipping (restrictions apply)
Overall opinion: Outstanding performer. Voltage regulation was excellent. Ripple suppression was excellent.
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Oh well I've been on this thread a few hours... time to go to bed.
Oh and huh, I would choose any Corsair, XFX or Seasonic with both my eyes closed, at any price point. But today these 3 brands offer unseen performance for that price... BUY ONE OF THESE IT'S A MUST !!! ^^