As we already know the EVGA SuperNOVA 750 G5 features a single 135mm fan design that is used in the same vein as 120mm fans in that these can provide for quiet cooling and quiet operation for environments due to the ability to move a larger volume of air at slower speeds than a smaller diameter fan. The 135mm fan is just about the largest diameter fan we are likely to see in ATX power supplies given the physical constraints of the form factor. While great for quiet computing environments the key criteria in our evaluation is whether or not the cooling solution is sufficient, not necessarily it’s sound output level or form factor, although we certainly listen for offending units.
External Build Quality
The exterior of the EVGA SuperNOVA 750 G5 has a traditional layout for a fully modular unit with an overhead fan in the ATX12v/EPS form factor. Cosmetically, the unit carries the EVGA SuperNOVA branding in a mixture of white and gold text on a sticker along with the heavily stylized EVGA fan guard. The branding is nice but mixed. The fan guard definitely has you thinking high end but then the rest of the branding has you thinking budget. That said, this is not EVGA’s top of the line unit. So, top of the line plus budget divided by two and carry the one averages out to about where this unit should fit. The modular interface is well labeled which is always good to see. Rounding things out, the unit has a durable black finish that is slightly textured.
The EVGA SuperNOVA 750 G5 comes in at a total length of ~5 7/8 inches while the cables come in at a length of ~22″ to 27″ to the first or only connector. Additionally, the cables are standard wire loom and the unit is fully modular.
Internal Build Quality
Once we open the top of the EVGA SuperNOVA 750 G5 we see a unit built by FSP. The topology is an active clamp reset forward (ACRF) primary with a synchronous rectification secondary and DC-DC VRM’s for the minor rails. The fan cooling this unit today is a FDB fan from Protechnic rated at 0.28A at 12v and it is paired with four heatsinks overall. Two of those heatsinks are bridged together on the primary side with a connector carrying the EVGA name/logo. Lastly, the soldering is very good.
The SuperNOVA 750 G5 input filtering begins on the housing itself where we find a PCB. The balance of the input filtering is found on the back edge of the main PCB. There is then a single bridge rectifier attached to a heatsink. The APFC coil is next and it is followed by the APFC power components attached to one of the heatsinks on the primary side all way on the edge of the main PCB.
Speaking of this heatsink, this heatsink is connected to the one that houses the remaining primary side power components (FETs for the ACRF) by an EVGA branded “bridge”. The reason for this design is somewhat unclear as it is only loosely fastened in our example and does not appear to offer any significant increase in ability for the heatsink(s). Anyway, the main input capacitor is right next to this “bridge” and it is provided by Rubycon with a rating of 450v 390uF 105C. This is much smaller than we see on competing designs using half-bridge and full-bridge primaries. However, the ACRF design generally can maintain holdup times with smaller input capacitors than those designs.
The secondary side of this unit looks a little less crowded than the primary. Through the middle to of the PCB, we find the transformers and then a small heatsink. This heatsink is for cooling the 12v MOSFETS which are attached to it. Next up, we find the DC-DC VRMs housed on their own PCB. Then, all the way on the edge of the main PCB, we find an add-in PCB that houses the fan controller and protection ICs. Around these PCB’s, we find a few standard and solid electrolytics provided by Nippon Chemi-con. Moving over to the modular PCB, the construction of the modular PCB looks very nice and there are more Nippon Chemi-con solid capacitors here as well. We also see indicated here that this PCB is used in all models of the SuperNOVA G5 up to 1000W.
Build Quality Summary
Today’s SuperNOVA 750 G5 is the first power supply we have seen from EVGA and it starts things off in good shape. Overall, the build quality looks very good and this unit is built on a bit of a unique platform from FSP. The exterior is nice enough with some low key, but sufficient, branding as well as the unique EVGA fan guard to make the unit “pop”. The cables are standard wire loom which is fine, but not quite as nice as the FlexForce style cables. The integration seems to be very well done and the component selection is excellent as we see Rubycon standard capacitors along with Nippon Chemi-con standard and solid capacitors. We also see a FDB from Protechnic used in this unit. It also supports protection OCP. All in all, the SuperNOVA 750 G5 is a striking unit from the get-go for its market position. Let’s move on now to the load tests and see how this unit performs!