Corsair AX850 Power Supply Review

1. Introduction2. Corsair AX850 Power Supply3. Corsair AX850 (Internal)4. Testing Methodology and Results5. Closing Thoughts6. View All Pages

The packaging follows the same design ethic as the AX1200 we reviewed a few weeks ago – very artistic and ‘corporate' in appearance.

Internally it is sandwiched by a very substantial foam encasing with a felt bag wrapped around the PSU itself for protection against markings during shipping.

Above is a picture of all the cabling which is supplied in a handy little carrying bag.

Corsair also supply mounting screws and cable ties to help keep your system build neat and tidy.

Corsair AX850W PSU – connectivity
ATX 24 pin & 20 pin	x1
EPS/ATX12V 8-4 Pin	x2
6+2 pin PCI-E	x4
Sata	x12
4-Pin Peripheral/Molex	x8
FDD	x2

We have to mention the fact that Corsair appearing to be listening to public feedback and have removed the floppy drive connectors from the end of cabling chains. They give a little converter cable for people still using one. You could always get a USB floppy drive which saves a considerable amount of hassle if you ever need one.

The quality of sleeving is high throughout and the whole bundle falls in line with what we would expect from a Professional Series Corsair bundle.

The AX850 is designed in a similar fashion to the AX1200 unit. With a very muted appearance tying in with the ‘professional' naming convention well. There is a large 120mm fan taking centerstage and an AX850 sticker on one side of the PSU. The finish is deep and looks beautiful.

The weight is 2.85kg and it measures 15cmx16cmx8.6cm. The unit is completely modular with an array of connectivity on one side for the system build.

Model	CMPSU-850AX
	AC Input Rating
AC input	90-264V
Input Current	12A
Frequency	50/60hz
	DC Output Rating
	Max Load	Max Output
+3.3V	25a	125w
+5V	25a
+12V	70a	840w
-12V	0.5A	6w
+5VSB	3.0A	15w
Total Power	850W @ 50c Ambient Temperature

We noticed that Corsair had not marked the connectors on the PSU body in the same manner as they did on the AX1200 unit – it shouldn't cause any confusion for a system builder mind you as its pretty obvious how they connect. The 24 pin power feed is directed into two feeds which are shown furthest left, top row and bottom row. The PCIe feeds take up the remaining three slots at the bottom. Sata and Molex power is fed from the five 6-pin power connectors top right.

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