February 11, 201214 yr Simple question: How many disks can be connected to this PSU? Please see attached diagram. Total Wattage is 720 Watt. PCI-E is not used. Mainboard is a DFI LANParty LT X38-T2R. Processor is Intel E6600, 2.4 GHz, RAM = 4 GB DDR2-800 Team Elite. 24-pin and 8 pin 12V power connector for mainboard are permanently attached to PSU on a separate 12V3 rail. 12V1 and 12V2 are specified @ 28 Amps.
February 11, 201214 yr Perhaps as many as 8 or more if green drives. 28A / 3 less about 3 amps for the cpu. This will s just a "rule of thumb" used on the boards. The second rail is usually for the video cards. Sent from my SGH-I727R using Tapatalk
February 11, 201214 yr Although I just noticed that your rails are split between Peripherals so if careful when attaching you could get 16 drives Sent from my SGH-I727R using Tapatalk
February 11, 201214 yr 12V1 and 12V2 are specified @ 28 Amps. Is that each or combined? What's the model number of the PSU? There's a general rule of thumb on the board that 3A per drive. I go by the drive specs published by manufactures which are usually about 2A per drive, then leave one off for headroom So on each 28A rail you can safely put 9 drives. I think that's a bit too much headroom. Going by 2A per drive, you can get 14 drives. However, I would leave headroom for fans. so I would say 10-12 drives per 28A rail, not to exceed 14.
February 12, 201214 yr 12V1 and 12V2 are specified @ 28 Amps. Is that each or combined? I doubt, very much, that it's 28 amps each - 2 * 28 * 12 = 672 watts. That doesn't leave a lot of capacity, out of 720watts, for the other rails!
February 12, 201214 yr 12V1 and 12V2 are specified @ 28 Amps. Is that each or combined? I doubt, very much, that it's 28 amps each - 2 * 28 * 12 = 672 watts. That doesn't leave a lot of capacity, out of 720watts, for the other rails! I agree, it doesn't make much sense @28A, unless they do not expect all rails to be full utilized. At 18A with 3 rails it makes sense. My corsair 620W has 3 12V rails @18A (I have 17 drives on my system). But then the diagram shows max combined wattage for the 3 rails is 600W. When clearly 3 * 18 *12 = 648.
Archived
This topic is now archived and is closed to further replies.