When you are looking for a high power power supply , and especially if it is for a gaming PC with one or more high-end graphics cards, you are usually looking for the best of the best regardless of the price. Today we are going to compare two of the greatest exponents when it comes to high-end power supplies, the Corsair HX1000i and the SeaSonic Prime TX-1000 , to see which of the two is more worth buying.
Right from the start, there is no doubt that both are excellent choices and that they will not disappoint anyone, but of course when you want to refine with the election we must see the differences that we can find between the two, starting with the price since in both cases these power supplies represent a significant investment of money, being the Corsair alternative significantly cheaper than the SeaSonic.
Prices are variable and depend on the store, but the Corsair HX1000i is generally around 250-300 euros, while the SeaSonic Prime TX-1000 is priced rarely below 400 euros.
Corsair HX1000i vs SeaSonic Prime TX-1000, technical characteristics
| Corsair HX1000i | SeaSonic Prime TX-1000 | |
|---|---|---|
| Power | 1000 W | 1000 W |
| Efficiency certification | 80 Plus Platinum | 80 Plus Titanium |
| Rails | Mono / Multi configurable | Monkey |
| Rail current + 12V | 83.3A | 83 A |
| ATX12V version | v2.92 | v2.92 |
| Fan | 140 mm Fluid Dynamic Bearing | 135mm Flow Dynamic Bearing |
| Zero RPM mode | Yes | Yes |
| Dimensions | 180 x 86 x 150 mm | 170 x 86 x 150 |
| Modular | Yes, 100% | Yes, 100% |
| Type of wiring | Flat | Flat (Except ATX) |
| Warranty | 10 years | 12 years |
| ATX 20 + 4-pin connectors | one | one |
| EPS 4 + 4-pin connectors | two | two |
| PCIe connectors | 8 | 6 |
| SATA connectors | 12 | 12 |
| MOLEX connectors | 12 | 5 |
| Floppy connectors | two | 0 |
| Digital | Yes | Not |
| software | Yes, iCUE | Not |
We are facing two power supplies of the highest range and with no less than 1000 watts of power, which together with their 83 amperes of current intensity on the + 12V rail makes them ideal for serving high-end PCs and with configurations of various graphics cards inclusive.
The first fundamental difference is found in terms of the efficiency certification, because while the Corsair boasts 80 Plus Platinum , the SeaSonic has the highest possible certification, 80 Plus Titanium . This means that while the Corsair HX1000i guarantees 92% efficiency at 20% load, 94% at 50% and 90% at 100% load, the SeaSonic Prime TX-1000 guarantees 94, 96 and 94% respectively, but also guarantees a 90% efficiency at 10% load, something that is not specified in the Platinum certification.
Of course, in terms of efficiency, the SeaSonic source is winning by a lot, but does that justify the difference in price ? Both are excellent power supplies and the proof of this is that the manufacturers offer a 10-year warranty in the case of Corsair and 12 years in the case of SeaSonic , which is always quite interesting, but we will continue to put them face to face. to see if it’s the only thing that differentiates them.
Both sources carry the same version of the ATX12V specification, and in fact both have a similar maximum amperage on the + 12V rail. An interesting difference is that the SeaSonic is monorail, while the Corsair has the possibility of operating either in single-rail or multi-rail mode, being able to select it manually through the software. And this is another difference, that the Corsair is digital and we can monitor and configure it from the software. Here we must say that the Corsair HX1000i wins.
As for the number of connectors, both sources are ready to serve practically any PC that we can imagine, and have connectors to spare for it. However, again Corsair has been more “forward-thinking” because its source includes two PCIe connectors, 7 MOLEX and 2 Floppy more than the SeaSonic. In any case, it is true that MOLEXs are increasingly in disuse, and that we will rarely need more than six PCIe connectors, right? What is interesting to note is that although both are 100% modular sources , the Corsair has all the flat cables and the SeaSonic all but the ATX, which is something to take into account. Corsair wins again.
Obviously, both power supplies have all the protections in place and to be, so security is not something we should worry about. What should be noted is that SeaSonic guarantees an internal design without wiring for less power loss, to the point that they guarantee a tolerance to micro voltage regulation ( MTLR ) of less than 0.5%, something that Corsair does not Specifies and we must consider SeaSonic the winner in this area.
Finally, it should be noted that the SeaSonic font is a centimeter shorter than Corsair’s and its fan is half a centimeter smaller. Both fans have Zero RPM functionality, and in this case SeaSonic guarantees that it emits a maximum of 20 dBA of noise.
Which power supply is better?
We carry the entire article saying that they are two Tier 1 power supplies, belonging to the high range and it is difficult for anyone to make a mistake when choosing one or the other because both will provide a service and benefits beyond any doubt.
However, there is a fairly significant price difference between the two, to the detriment of SeaSonic, which is much more expensive. It is a more efficient source, with more guarantee, quieter and with greater reliability if possible than the Corsair. The HX1000i for its part, is a digital source, with more connectors and completely flat wiring.
Our verdict is that if you have a very high-end PC and you want the best of the best, choose the SeaSonic Prime TX-1000 , but if you don’t want to or can spend 400 euros on a source, of course the HX1000i is not at all a bad option.