8-way SLI and Crossfire Power Supply (PSU) Roundup

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Test Systems

AMD AM2 with SLI Test Platform

Component

Brand/Model

Live Pricing

Processor

AMD X2 5000+

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Motherboard

ASUS M2N32-SLI Deluxe Click Here

Video Card

2 x NVIDIA 7800GTX 512MB SLI

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Memory

2 x 1GB Corsair XMS2-6400C3 (@2.2V) 

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Hard Drive

Western Digital 250GB Click Here

Cooling

Corsair Nautilus 500

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Operating System

Windows XP Professional

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Intel 775 with Crossfire Test Platform

Component

Brand/Model

Live Pricing

Processor

Intel Pentium Processor 965 (HT Disabled)

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Motherboard

Intel 975XBX (Bad Axe) Click Here

Video Card

2 x ATI X1900 Crossfire

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Memory

2 x 1GB Corsair XMS2-6400C3 (@2.2V) 

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Hard Drive

Western Digital 250GB Click Here

Cooling

Corsair Nautilus 500 (fan speed on High)

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Operating System

Windows XP Professional

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Testing Procedure

Aside from the components listed above, we had a 120mm and an 80mm fan plugged into the 4-pin molex connectors as well as a third 80mm case fan plugged into the motherboard’s 3-pin fan header. We also added our ASUS AGEIA PhysX P1 PPU for more power draw.

Once the system was up and running, we took the Idle wattage and voltage readings while the system was sitting on the desktop with no other applications running. We then ran one instance of Prime95 torture test and 3DMark2006 GPU tests, all while playing an audio CD to bring the system to max power! Once the system heated up and the GPU and PSU fans were running full blast, we then took the Load wattage and voltage readings.

Take note that we are testing these PSUs on an AM2 5000+/SLI system as well as a Intel 965 EE/Crossfire system in order to show real world situations of enthusiast systems, which are what these power supplies are marketed towards.

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