Antec TPQ-850 TruePower Quattro 850W Power Supply

Category: Power Supply
Manufacturer: Antec, Inc.
Provided by: Antec, Inc.
Model: Quattro 850-EC
Price: See latest prices

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The Test

For the testing purposes, power supply provided by Antec was installed in the system with the following components:

Intel Core 2 Duo E6600 processor @ 3.5GHz
Intel 975XBX2 "Bad Axe 2" motherboard
2Gb (2x1GB) G.Skill PC2-8000 HZ 4-4-4-5
EVGA GeForce 7950 GX2 @ 550/1300
3x36GB WD Raptors ADFD in RAID 0
2x320GB Seagate Barracuda 7200.10 in RAID 1
Asus DRW-0804P Optical Drive
Sound Blaster X-Fi XtremeMusic
Media Card reader/Floppy Drive combo
Swiftech MCP 650 Water Pump, Apogee CPU block, Dual Heatercore radiator
LIAN LI PC-V2100B case
Fans: 5x120mm, 1x80mm, 1x60mm, 1x40mm, Corsair Dominator RAM cooler

On this close up picture you can see the Antec TPQ-850 TruePower Quattro 850W Power Supply installed in the LIAN LI PC-V2100B case. I have a bunch of components that use 4-Pin Molex connectors and since I already used two modular cables for SATA hard drives, I had a small problem by not having enough connectors to power all of my devices. Well, a good thing that I found a few Molex extension cables in my drawer :)

Idle voltages were measured by powering the system at the default speeds, and voltages with no applications were running for at least 30 minutes.
The load condition was established by running loops of the SM graphics test from 3DMark06 at 1600x1200 resolution with enabled 8x AA and 16x AF and Orthos (2 cores) at the same time for at least 60 minutes. All voltage rails were measured using a digital multimeter by tapping into various connectors. In addition to these stressful applications running, the loaded system was overclocked and overvolted to add more demand to the CPU and graphics card.

Antec's TPQ-850 TruePower Quattro 850W Power Supply has amazing voltage regulation. In my case, I recorded only two tiny fluctuation of 0.01V on a +12V3 and +5V rails. The rest of the rails were solid like a rock! The 80mm ADDA fan was quiet and seemed to be cooling PSU well.