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PC Enthusiasts and PC Gamers looking to either overclock or run multiple GPU's need a consistent throughput of power to sustain it all. Reliability is always a concern.  In order to meet this, Ultra Products has a new line of premium modular power supplies, the X4 series to be exact.   Today PCWizKid reviews the 850 Watt model from the X4 lineup which also comes from 500Watt to 1600W sizes. Ultra's X4 has a patented Modular Design, you only connect the cables which you need increasing airflow and giving your chassis that nice clean-look. The Ultra X4 Modular Power Supply uses a 135mm fan which improves airflow throughout the chassis while keeping noise at a minimum. This PSU also has thermal overload sensors which automatically protects your precious gaming PC when surges or overheating become an issue. With a 3 year standard and lifetime warranty available upon registration, Ultra's customer service meets the highest industry standards. This shows that Ultra stands by their product for quality.

When I first saw the box it came in I knew this was a high end PSU.  Aimed to those looking for a coolness factor also, the PSU has the aggressive look with the X4 Ultra logo embossed on the sides.  Now came the fun part testing it.

PCWizKid's Test System

• Intel Core i5 750 overclocked at 4Ghz
  
• Two Diamond ATI Radeon HD4890's in crossfire (overclocked)
  
• 4GB DDR3 Corsair XMS3 1600 (overclocked)
  
• GlacialTech F101 CPU cooler
• Cooler Master HAF932 Full Tower Cacse
• Western Digital 500GB SATAII HDD
• Windows 7 Ultimate 64Bit
• Ambient room temperature 21C
  

Video Review

Features

• Certified to Support NVIDIA SLI or ATI Crossfire Multi-Core GPU Technologies
• 80+ Silver Certified for efficiency
  
• Modularized Cable Management System
• One large 60 Amp +12V Rail
• Silent 135mm Fan with Intelligent Fan Speed Control for Optimal Performance
• MTBF>100,000 Hours at 25C
  
• Over Voltage and Short Circuit Protections
• High Grade Components (Capacitor, etc.)

Specifications

Connectors

24 pin	P8 MB	P4 MB	Peripheral	FDD	SATA	6-pin PCI-E	8-pin PCI-E
x 1	x 1	x 1	x 9	x 2	x 11	x 6	x 3

	Form Factor:	ATX
	Wattage:	850-Watt
	SLI/Crossfire:	SLI Certified
		CrossFire Certified
	Modular Cabling:	Yes
	Special Features:	Modular
	Energy Efficiency:	80 PLUS Silver
	Fan:	135 mm
	Input Voltage:	115 ~ 230
	+3.3V:	24 A
	+5V:	30 A
	+12V 1:	60 A
	-12V:	0.5 A
	+5VSB:	3 A
	Dimensions:	5.8" x 6" x 3.5"

	Motherboard Connector:	24-Pin
	Motherboard Power Connector:	4 Pin MB
		8 Pin MB
	6-Pin PCI-Express Connector:	6
	8-Pin PCI-Express Connector:	3
	4-Pin Floppy Connector:	2
	4-Pin Peripheral Connector:	9
	SATA Power Connector:	11

Conclusion

As seen in PCWizKid's video review, from packaging to installation the Ultra X4 was exceptional.  However the real test was that during full load testing both the rails stayed within a +/-1% deviation which demonstrated that the X4 Series PSU's are able to deliver a consistent output.  With an easy to use modular design , plenty of connector support this PSU shows quality and craftsmanship (wth 3yrs warranty to back it up).  If price is not much of an issue this PSU has quality and style to keep any PC Enthusiast happy for years. The system we tested was fully packed and overclocked to maximize the power requirements on the Ultra X4 850W, which didn't even break a sweat! PCWizKid gives the Ultra X4 850 a "Recommended" Award.

Click here for the latest pricing for the Ultra X4 850W PSU