TiVECO TVPS450 Power Supply Review

Conclusions

We think it is amazing how there are still manufacturers selling power supplies that can’t deliver their labeled wattage. And the worst part is their lying about it. Let’s analyze the features as listed by the manufacturer on the product box (refer to Figure 1):

• “Guaranteed to deliver rated specifications at 50° C.” A lie. We could only pull up to 310 W from this power supply.
• “80%+ energy efficiency at 20%, 50% and 100% load condition for less heat generation and lower energy bill.” Another lie. Efficiency was between 74.6% and 77.6% during our tests (not to mention that this unit can’t deliver 100% load).
• “Supports the latest ATX12V v2.2 and EPS12V 2.91 standards and is backwards (sic) compatible with ATX12V 2.01 systems.” One more lie. This power supply can’t be compatible with the EPS12V standard, as it doesn’t even have an EPS12V connector.
• “Powerful +5Vsb rail with 3A rating.” We couldn’t test this one, as we pulled 1 A from the +5VSB output during all our tests.
• “Auto switching circuitry provide (sic) universal AC input 90 ~ 264 V.” Again, a lie. This power supply doesn’t have this feature.
• “Over Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety for your critical system components.” Yet another lie. This power supply does not support over current (OCP) and over power (OPP) protections.

Well, at least compared to other low-end power supplies, noise and ripple levels were always inside the proper range, and voltage regulation only went outside the specifications during our last test, with the power supply delivering 310 W.