FSP Hydro PTM 750W Power Supply

REVIEW INFORMATION
SUPPLIED BY: FSP Group
MANUFACTURER: FSP Group
PRODUCT: Hydro PTM 750W
PROD LINK: Hydro PTM Product Page
PRICE: $134.99 @ NewEgg
Price is at the time of testing!


Hydro PTM 750W – Overshoot Transient Tests
VSB On VSB to 100%, 12V Off to 100%, 12V

Well, we start off looking good with the first test. However, both shots on the 12V side are definitely not what you would call smooth and continuous. That’s going to cost them a little when it comes time to score this thing.

Let’s get the second round of testing going.

Hydro PTM 750W – Hot Load Tests
Test # +3.3V +5V +12V +5VSB DC W/
AC W
AC
Input
Eff. P.F. Int /
Exh
RPM
Progressive Load Tests
1
(10%)
1.1 A 1.1 A 5.3 A 0.25 A 74.29 W/
85.60 W
120.5 V 86.79 % 0.984 24°C /
23°C
864.2
3.362 V 5.061 V 12.03 V 5.073 V
2
(20%)
2.3 A 2.3 A 10.7 A 0.5 A 150.60 W/
166.40 W
123.4 V 90.50 % 0.995 26°C /
24°C
866.8
3.359 V 5.054 V 12.03 V 5.055 V
3
(30%)
3.4 A 3.4 A 16.0 A 0.75 A 224.80 W/
243.70 W
123.0 V 92.24 % 0.997 27°C /
26°C
870.6
3.355 V 5.047 V 12.03 V 5.057 V
4
(50%)
5.7 A 5.7 A 26.7 A 1.25 A 375.12 W/
405.60 W
123.1 V 92.48 % 0.998 30°C /
28°C
877.6
3.347 V 5.033 V 12.03 V 5.026 V
5
(70%)
8.0 A 8.0 A 37.4 A 1.75 A 525.19 W/
572.40 W
123.1 V 91.75 % 0.998 32°C /
31°C
885.1
3.340 V 5.019 V 12.02 V 5.010 V
6
(80%)
9.2 A 9.2 A 42.8 A 2.00 A 601.47 W/
658.90 W
122.8 V 91.28 % 1.000 35°C /
33°C
888.2
3.337 V 5.011 V 12.03 V 4.997 V
7
(90%)
10.4 A 10.4 A 48.1 A 2.25 A 676.19 W/
746.00 W
121.4 V 90.64 % 0.998 36°C /
34°C
890.3
3.333 V 5.003 V 12.02 V 4.982 V
8
(100%)
11.5 A 11.5 A 53.5 A 2.50 A 751.36 W/
835.40 W
120.9 V 89.94 % 1.000 38°C /
36°C
1125.1
3.329 V 4.995 V 12.02 V 4.971 V
Crossload Tests
CL1
(+3.3V +5V)
14.4 A 14.4 A 0.0 A 0.0 A 120.17 W/
139.80 W
122.0 V 85.96 % 0.993 23°C /
22°C
870.4
3.342 V 5.003 V 12.02 V 5.078 V
CL2
(+12V)
0.0 A 0.0 A 62.5 A 0.0 A 751.41 W/
830.50 W
120.7 V 90.48 % 1.000 34°C /
32°C
878.8
3.346 V 5.047 V 12.02 V 5.070 V

Ok, we’re starting with the load regulation first. On the +3.3V rail, we end up with the same 1.0% as we had in cold testing. On the +5V rail, we have a slight increase to 1.32%. The +12V rail stays unchanged at 0.08%. Lastly, we have the +5VSB rail increasing to 2.14%.

On the efficiency side of the scale, we need to achieve 90%, 92%, and 89% at 20%, 50%, and 100% loads. At the 20% mark in Test 2, we hit 90.5%. At 50% load in Test 4, we hit 92.48%. Lastly, at 100% load in Test 8, we hit 89.94%. We have a clean pass for 80PLUS Platinum certification.

Utilizing a hot-box setup as we do, it becomes a challenge trying to heat up some of these very efficient power supplies. This unit, for example, managed to hit 22°C in/26°C ex in the cold tests and 38°C in/36°C ex here in the hot tests.

Looking at the fans RPMs, we can see the increased heat did cause the fan to spin a little more.

Hydro PTM 750W – Oscilloscope
Test # +3.3V +5V +5VSB +12V
1
2
3
4
5
6
7
8
CL1
CL2

Looking at these rippletastic shots, there’s not really a whole lot that can be said. The +3.3V and +5V rails came in at 5 mV & 6 mV. The +12V rail came in at 22 mV, while the +5VSB shows 15 mV.

Shall we crack things open?