A GOOD PSU IS MORE IMPORTANT THAN EVER

corsair-hx1000i-e1586650595828

Today with video cards demanding two and even three PCIe power cables really makes the case for getting a super high rated power supply. Even worse is that video cards are now wider and depend three slot spaces.

RATED POWER12V CABLES AVAILABLE
550W2
650W3
750W4
850W5
1000W6
1200W6
1600W10

The HX1000i served in the studio for many years. It has a honest 1000W of capacity which makes it capable of handling any video card out there. More recently the AX1600i was procured to bring the machine capability to the limit. With ten 12V cables it’s of no real concern about video card power trends.

CP-9020087-NA-Gallery-AX1600i-01

The EPA 80 Plus program has probably eliminated the need for over 1000 power plants since it was established. Today ATX power supplies are reaching 94% efficiency which is astounding considering the amount of engineering needed. The AX1600i does deliver 94% efficiency when playing games.

The old Cooler Master HAF932 is still a great chassis. The only problem is that replacement feet for it are very expensive. The difference in value is why the Corsair Obsidian 750D took over. A good chassis with a good PSU means that it can survive several cycles of refurbishment as new motherboards are installed with each generation of RAM.

The 750D is slated for a forklift overhaul to install a DDR5 motherboard next year. The posts that mount the motherboard stay put when removing an old motherboard. Once the screws are removed the board comes out easily at least with EATX size chassis. Smaller rigs may need to remove more hardware to be able to squeeze the board out.

DDR5 boards so far all have dual EPS12V cables which is why the 1000W+ PSU is so important. There are more 12V cables with the extreme power rated PSUs. At present three PCIe cables are the limit for RTX Ampere cards; Radeon cards only need two PCIe cables. Looking at the HX1000i it is clearly at the limit of its capability with a DDR5 motherboard and a RTX 3090 card. There is only one 12V cable left. The HX1000i can handle the RTX 3090 no problem even with a 250W CPU installed and its efficiency is great when gaming.

The AX1600i has more 12V cables but the PSU also has more peripheral cables which affords for more fans and other gear. The advantages of the AX1600i are numerous.