The Ultra Products X2 PSU Review :: Performance

02-11-2006 · Category: Hardware - Power Supplies

By Tulatin

In order to test the performance of the supply, we've calibrated Motherboard Monitor 5 using the sensor files for the DFI Motherboards, (Available Here), then further calibrated these sensors to agree with a Digital Multimeter at idle. We then fire up OCCT (Available Here) and let it run its course, under three different scenarios. The first of which involves just letting the program run on it's own to simulate a day to day load on the system. The second level of testing sees us defragmenting a drive that hasn't been lucky enough to have such done to it in some months now, while we rip a DVD to yet another of the system's 3 drives. This is intended to demonstrate the kind of load that most heavy multimedia users would demonstrate. The third level of loading is intended to see how well the power supply copes with the insatiable thirst for power provided by our SLI'd 6800GTs. During this test, 3D Mark 2005 is looped 5 times at the standard quality level while OCCT runs. To those of you wondering why we use OCCT, it is for the simple reason that it creates graphs of every voltage change seen on the 12V, 3.3V and 5V lines during a test. With the methodology to our madness in mind, let's proceed on to showing off the test setup, then finding out just how the X2 holds up when the pressure hits hard.


Test Bed

  • 3000+ Clocked to 2.52GHz (280*9, 1.61V, Drawing 124W)
  • DFI SLI-D With all power connections made (20W)
  • 2x NVIDIA 6800GTs (Drawing 100W each)
  • 2x512MB OCZ GX Memory (Clocked to 252MHz @ 2-2-2-0, 3.33V, Drawing 80W)
  • Leadtek TV2000XP Deluxe (Drawing Mere Standby Power)
  • 2x80GB Maxtor SATA Drives, 1x250GB WD PATA Drive (60W Draw on 12V/5V)
  • LG Combo DVD Drive (20W Draw)
  • Assorted cooling care of a shed worth of fans, 10W
  • Total Wattage Needs Estimate: 574W!

In the preliminary testing, we can see that the X2 power supply is quite capable of keeping voltages above their rated minimums (that is, except for the 3.3V rail), while holding down a moderate ripple. While this ripple may seem severe compared to the other supplies in the test, keep in mind that the tolerance for these voltage ripples (that is, the % generated by taking how far above and below the highest and lowest peaks are from the line, adding them then dividing it by that line's native voltage), is generally around 1%. As such, this unit is still well within a zone of comfort.


The Ultra Products X2 PSU Review VoltCore

VoltCore

The Ultra Products X2 PSU Review 12 Volt

12 Volt

The Ultra Products X2 PSU Review 5 Volt

5 Volt

The Ultra Products X2 PSU Review 3.3 Volt

3.3 Volt

The Ultra Products X2 PSU Review CPU Graph

CPU Graph

The Ultra Products X2 PSU Review Case Graph

Case Graph


Interestingly enough, the addition of the power needs of the trio of hard drives and an optical drive to the mix gave some supplies an advantage, while hurting the performance of others. In the case of the X2, we saw ripple fall by .013%, even though voltages generally stayed the same. This decrease in ripple bodes well for the X2, as it shows that the power circuitry becomes more efficient as it's workload is increased.


The Ultra Products X2 PSU Review VoltCore

VoltCore

The Ultra Products X2 PSU Review 12 Volt

12 Volt

The Ultra Products X2 PSU Review 5 Volt

5 Volt

The Ultra Products X2 PSU Review 3.3 Volt

3.3 Volt

The Ultra Products X2 PSU Review CPU Graph

CPU Graph

The Ultra Products X2 PSU Review Case Graph

Case Graph


The sudden strike of another 230W onto the 12V rails really puts a strain on all of the supplies listed here today - so much so of one, that the ancient Single Rail Ultra 600W PSU couldn't make it, failing 8 minutes into the stability test. As to the ripples, the X2 supply exhibited the least increase, even though it appears that it's regulation is the least lenient. Still, for what it's worth, the X2 held it's ground by keeping all of the critical voltages as close to their previous points as possible, a feat which the other units we covered definitely had trouble doing. The prognosis? There's some efficient circuitry at work here.


The Ultra Products X2 PSU Review VoltCore

VoltCore

The Ultra Products X2 PSU Review 12 Volt

12 Volt

The Ultra Products X2 PSU Review 5 Volt

5 Volt

The Ultra Products X2 PSU Review 3.3 Volt

3.3 Volt

The Ultra Products X2 PSU Review CPU Graph

CPU Graph

The Ultra Products X2 PSU Review Case Graph

Case Graph