Ultra X-Finity 600W Power Supply

SUPPLIED BY: Ultra Products
MANUFACTURER: Ultra Products
PRODUCT: X-Finity 600W
PROD LINK: Not Available
PRICE: MSRP $199.99
Price is at the time of testing!

So, enough of the cables. What else changed with this version of the X-Finity?

Unlike the X-Finity 500W and the X2 550W, the 600W X-Finity still has the two coaxially mounted 80MM fans it’s always had. This is because, if the power supply is going to put out a sustained 600W, it’s going to need better cooling and nothing is going to provide better cooling than a straight through in-one-end-out-the-other fan arrangement.

X-Finity 600W – DC Output
DC Output +3.3V +5V +12V1 +12V2 -12V -5V +5VSB
25A 30A 18A 20A 0.6A ? A 2.5A
Max Power 165W 420W 7.2W ? W 12.5W
581W 19.7W

Taking a look at the rails, we see a pair of 12V rails; one capable of 16A and the other capable of 18A. The combined 12V rating is 420W. That equates to 35A. Since that’s an odd number, we’re going to throw a half an amp on each of the 12V rails on the load tester and put a 17.5A load on each 12V rail during load test 5. The combined 3.3V and 5V are pretty low at 160W, which is fine for a modern PC that primarily loads the 12V rails, so we’re going to lower the load on those two rails today.

Ultra X-Finity 600W

This is a cool photo: The FlexForce cables you see reflected off the surface of the PSU is from an X-Finity ad. The surface is THAT reflective.

So let’s get to it! The loads will start with the customary 3.3V@2A, 5V@5A, and each 12V rail @3A. I’ll increase the load across all rails until the 12V rails meet the maximum combined wattage. As usual, the -12V is set to a .5A load and the +5VSB has a 2A load on it.

X-Finity 600W – Cold Load Tests
Test # +3.3V +5V +12V1 +12V2 DC W/
Eff. P.F. In./
Progressive Load Tests
1 2A 5A 3A 3A 120.5W 77% .63 23°C/
3.38V 5.13V 12.10V 12.08V
2 5A 10A 7A 7A 251.0W 79% .69 23°C/
3.30V 5.07V 12.02V 12.00V
3 7A 14A 11A 11A 370.9W 78% .73 24°C/
3.24V 5.02V 11.91V 11.89V
4 10A 17A 14A 14A 463.0W 76% .76 24°C/
3.17V 4.98V 11.83V 11.81V
5 12A 20A 17A 17A 550.8W 73% .76 24°C/
3.11V 4.94V 11.74V 11.72V

As we can see above, there was a .36V drop in the voltage. Better than the BFG 650W I reviewed yesterday, but not as good as the SilverStone I reviewed last week. So we need to factor a score of 6.5 into the total performance score for that.

Surprisingly, efficiency was typically above 77%. That gives it gets a score of 7.5 for efficiency to factor into the performance score. A slightly higher score than the BFG 650W and SilverStone ST56ZF reviewed here. The lack of PFC gives the PSU a score of 4 in that department.

I also want to note that the fans were noticeably loud by the time I was logging data from test 3.

So now that we’ve seen what this PSU can do in a 23°C room, let’s see how it does once it’s installed into a case and has heat pumped into it…

X-Finity 600W – Hot Load Tests
Test # +3.3V +5V +12V1 +12V2 Watts Eff. P.F. In./
Progressive Load Tests
1 2A 5A 3A 3A 120.5W 76% .62 33°C/
3.37V 5.13V 12.09V 12.07V
2 5A 10A 7A 7A 250.7W 79% .69 34°C/
3.29V 5.07V 12.00V 11.99V
3 7A 14A 11A 11A 370.0W 78% .73 35°C/
3.23V 5.02V 11.90V 11.88V
4 10A 17A 14A 14A 462.2W 76% .76 38°C/
3.16V 4.98V 11.81V 11.78V
5 12A 20A 17A 17A 549.3W 72% .77 40°C/
3.10V 4.94V 11.71V 11.68V

At least the voltages didn’t drop much once the heat was on. The “noticeable fan noise” kicked in a little earlier than before; kicking in halfway through test 2. But the X-Finity 600W does well with the “hot box”, but because there was only an average drop of .02V going from the bench to the box, the X-Finity scores an 8 here.

Another test I ran was a crossload test. Essentially, I test the effects a system with a substantial 12V load, and a minimal 3.3V and 5V load would have on a power supply. For this test, I crank the 12V rails up to their maximum. I then drop the 3.3V and 5V rails down to 3A and 4A respectively. If the 12V voltage drops below spec, I increase the load on these rails until the rails are back in spec. The SilverStone ST56ZF scored a 10 here. The BFG 650W only scored a 6.5. How did the X-Finity 600W do?

With the total combined load of 30W, the X-Finity’s 12V rails dropped to 11.35V and 11.34V. As I turned the 3.3V rail up to 4A and the 5V rail up to 6A, the 12V rails settled at 11.4V each. That means the X-Finity 600W gets an 8.5 score here.