Overview of power supplies Qdion QD-450PNR and FSP ATX-450PNR-I
The vast majority of personal computers for offices, as well as for the most ordinary ordinary home user, need a solid power supply and at the same time, given the constant increase in the cost of electricity, it is not too powerful, but quite sufficient for good video cards, modern processors and a couple of disks. And it is precisely such power supplies (up to 500 W) that are most in demand among computer manufacturers. In this review, we will look at a couple of such products that are manufactured by the well-known manufacturer – the company FSP, which has long been known in the Russian market and enjoys well-deserved respect for inexpensive, but simple and reliable power supplies. The models under consideration: Qdion QD-450PNR and FSP ATX-450PNR-I are part of the new series of devices designed to meet the requirements of large system integrators and medium-sized builders in their solutions. Power supplies of this series are intended exclusively for delivery as part of a turnkey solution. However, you can also buy them at retail, so let's take a closer look at them.
Both power supplies are designed primarily for computer builders, and therefore they are delivered without any packaging. Naturally, there are no mention of any power cords, connection instructions, mounting screws, etc., etc., since they are often unnecessary to system integrators and assemblers.
Power supplies, both the FSP ATX-450PNR-I and the Qdion QD-450PNR, are designed for installation in ATX-cases and therefore have standard sizes of 150 × 140 × 86 mm. All wires are rigidly built-in and therefore their installation in high housings is not initially envisaged. The sticker on one of the sides shows the parameters of the power supply, its name, serial number and country of manufacture. Despite the fact that both products have the same maximum power, the parameters on the power lines differ significantly and the Qdion QD-450PNR, unlike the FSP ATX-450PNR-I, supports slightly more powerful processors.
Ventilation in both power supplies is carried out through the fan grid and grille, on which a power connector and a switch are installed. This is quite enough for good airflow of internal elements and maintaining optimal temperature.
The fans used in the FSP ATX-450PNR-I and Qdion QD-450PNR are different. They are the same in diameter, and their country of origin is China. But they are made by different companies and have different characteristics. In the first case (FSP) the fan is made by DWPH, it is quiet due to double-row bearings. In the second case (Qdion), the FD12S12025H seven-blade fan is manufactured by Shenzhen Fengmao Teng Technology Co., Ltd., which blows out quite large volumes of air (CFM = 67.60), but it is noisier than that used in the FSP ATX-450PNR-I power supply.
The internal installation of both power supplies is very neat. Accessories are also carefully selected so that the devices last more than one year, but much longer. Circuitry is very standard, but due to the presence of many "buffer" parts and a PWM controller, good alignment of the output parameters with current and voltage, as well as the necessary protection against overvoltage and overloads are provided.
Signature FSP Power Supply Efficiency
Signature Qdion Power Supply Efficiency
To compare these two models, we used a special load stand, which allows you to smoothly increase the load on each of the channels of the power supply. It should be noted that the efficiency of both power supplies is approximately the same, however, due to the difference in the internal structure, the efficiency of the Qdion power supply with a single 12 V bus turned out to be slightly higher than that of the FSP, which has two separate 12 V buses.
In this article, we told you about two new power supplies that are designed for both system integrators and computer builders, and for end users. These are the FSP ATX-450PNR-I and Qdion QD-450PNR models. They are identical in maximum power, but slightly differ in power on channels 3.3 and 12 V. Both power supplies are built according to standard schemes for such solutions and at a low price from 1600 to 2000 rubles (the FSP ATX-450PNR-I model is slightly more expensive, than Qdion QD-450PNR) are a good choice for assemblers
. (tagsToTranslate) Qdion (t) FSP (t) power supply (t) PSU (t) 450 W (t) budget