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Results

Stability

The 3.3v rail is slightly on the high side at both idle and load. However, it’s not too far out and is still at a safe voltage.

OCZ MODXSTREAM 600W PSU

The 5v rail is reasonable with it scoring around the mean voltage of 5.06 at idle. However, at load this voltage fluctuates by 0.2v and so is slightly higher than we’d expect.

OCZ MODXSTREAM 600W PSU

The 12v rail is the worst out of all the power supplies tested so far. The average voltage for the 12v rail out of all the power supplies tested is 12.2v. Therefore the scorings of 12.38v and 12.35v at load are way out.

OCZ MODXSTREAM 600W PSU

Efficiency

PF Standby PF Idle PF Load Watts Standby Watts Idle Watts Load
Signature 650W 16 84 91 7 94 139
Commander 850W 24 77 85 9 98 142
RX-8500 850W 20 70 81 6 96 142
Turbo Cool 860W 19 80 86 9 100 143
M12D 850W 43 87 91 8 94 137
Revolution85+ 950W 25 90 94 9 97 140
Quattro 1000W 16 86 91 9 104 148
Fatal1ty 700W 20 83 90 9 97 142
Silencer 750W 48 88 92 8 95 142
ModXStream Pro 600W 43 82 90 9 95 142

From the power factor tests you can see that the ModXStream Pro 600W overall is making great use of the power being fed to it. It scored an impressive 43 at standby whilst the idle and load power factors are slightly below average.

The wattage tests proved the OCZ to be using only 95 watts at idle, which is the 2nd best scoring. At standby and load the results are positive as well with it using a similar wattage to all the units on test.

Noise

When first powering the PSU up we experienced a slight rubbing sound from the fan – this was the bearings wearing themselves in. The OCZ power supply was thereafter very quiet.

Cost

Priced at £65 Inc VAT the OCZ ModXStream Pro is slightly below average for a performance 600W power supply.

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