Skip to main content

Antec Signature Platinum 1300W Power Supply Review

Antec Signature Platinum 1300W
(Image: © Tom's Hardware)

Protection Features

Check out our PSUs 101 article to learn more about PSU protection features.

Protection Features

 

OCP

12V: 146A (135.19%), 12.24V
5V: 30.2A (120.8%), 5.107V
3.3V: 31.5A (126%), 3.351V
5VSB: 3.8A (126.67%), 5.026V

OPP

1802.69W (138.67%)

OTP

✓ (151°C @ 12V Heat Sink)

SCP

12V: ✓
5V: ✓
3.3V: ✓
5VSB: ✓
-12V: ✓

PWR_OK

Proper Operation

NLO

SIP

Surge: MOV Inrush: NTC Thermistor & Bypass Relay

This is a highly capable and powerful platform. Still, we would like to see within 130% OCP at +12V and OPP. There are no-load regulation or ripple issues at such high loads, but at high operating temperatures, things might change under the same load conditions. Moreover, there is no need, in such a high capacity PSU, to provide such a large overpower window. 

DC Power Sequencing

According to Intel’s most recent Power Supply Design Guide (revision 1.4), the +12V and 5V outputs must be equal to or greater than the 3.3V rail at all times. Unfortunately, Intel doesn't mention why it is so important to always keep the 3.3V rail's voltage lower than the levels of the other two outputs.

Image 1 of 3

(Image credit: Tom's Hardware)

DC Power Sequencing Scope Shots

Image 2 of 3

(Image credit: Tom's Hardware)
Image 3 of 3

(Image credit: Tom's Hardware)

The 3.3V rail is lower than the other two in all cases, so there are no issues here. 

Cross Load Tests

To generate the following charts, we set our loaders to auto mode through custom-made software before trying more than 25,000 possible load combinations with the +12V, 5V, and 3.3V rails. The deviations in each of the charts below are calculated by taking the nominal values of the rails (12V, 5V, and 3.3V) as point zero. The ambient temperature during testing was between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

Load Regulation Charts

Image 1 of 3

(Image credit: Tom's Hardware)

Load Regulation Charts

Image 2 of 3

(Image credit: Tom's Hardware)
Image 3 of 3

(Image credit: Tom's Hardware)

Efficiency Chart

(Image credit: Tom's Hardware)

Ripple Charts

The lower the power supply's ripple, the more stable the system will be and less stress will also be applied to its components.

Image 1 of 4

(Image credit: Tom's Hardware)

Ripple Suppression Charts

Image 2 of 4

(Image credit: Tom's Hardware)
Image 3 of 4

(Image credit: Tom's Hardware)
Image 4 of 4

(Image credit: Tom's Hardware)

Infrared Images

We apply a half-load for 10 minutes with the PSU's top cover and cooling fan removed before taking photos with a modified FLIR E4 camera able to deliver an IR resolution of 320x240 (76,800 pixels).

Image 1 of 7

(Image credit: Tom's Hardware)

IR Images

Image 2 of 7

(Image credit: Tom's Hardware)
Image 3 of 7

(Image credit: Tom's Hardware)
Image 4 of 7

(Image credit: Tom's Hardware)
Image 5 of 7

(Image credit: Tom's Hardware)
Image 6 of 7

(Image credit: Tom's Hardware)
Image 7 of 7

(Image credit: Tom's Hardware)

We didn't notice increased temperatures, despite the 650W load with the fan disconnected. The hottest part during these tests was the main transformer. 

MORE: Best Power Supplies

MORE: How We Test Power Supplies

MORE: All Power Supply Content