750W 24/20 ATX PSU Question

I recently bought this Power Supply because my other one blew out. I bought this one, here are the specs, nothing amazing:

This A-Power AK750 power supply delivers an impressive 750-watts of power to keep your computing running for years to come. This power supply features a 20+4-pin ATX power connector, four large Molex power connectors, one floppy connector, one 12V power connector and two Serial ATA (SATA) connectors. There is even a PCI Express connector to power your PCIe graphics card so that you can game to your heart's desire.

The AK750 keeps cool under pressure with safety features that include a 120 mm fan for cooler and quieter operation, full sleeved cables for better airflow and less cable clutter, and dual +12V rails to prevent overheating. Extend the longevity of your system, upgrade to this A-Power AK 750-watt power supply today!


* A-Power AK 750W 20+4-pin ATX Power Supply

* General Features:
* Black metallic finish
* 750-watts total power
* 110V, 220V switchable power supply
* 120 mm Fan
* Cooler and quieter operation
* Sleeved cables
* One (1) 16-inch 20+4-pin ATX power connector
* One (1) 16-inch 4-pin 12V power connector
* Four (4) large Molex 4-pin power connectors
* Two (2) SATA power connectors
* One (1) small floppy power connector
* One (1) 6/8-pin PCI Express power connector

* Power Specifications:
* 110/220V, 50/60 Hz
* +3.3V, 28A
* +5V, 30A
* +12V, 22A
* +12V, 22A
* -12V, 0.6A
* +5Vsb, 2A

* Dimensions:
* 5.5 x 6 x 3.25-inches (L x W x D, approximate)

* Regulatory Approvals:
* CE
* RoHS compliant


* A-Power AK 750W 20+4-pin ATX Power Supply
* Power cord


* Product Requirements:
* Available power outlet
* ATX case
* ATX motherboard

Now my question is it says it comes with one 6/8 pin PCI-E power connector, so does that mean I CANNOT buy a Radeon 4890? Shown here:


I have a Radeon 4850HD now. Thanks
11 answers Last reply
More about 750w question
  1. I have that PSU in my pc now with the Visiontek Radeon 4850HD it needs only 1 6 pin connector.
  2. By specifications, that is an excessively mediocre power supply. 44 amps is excessively weak for a 750 Watt PSU. A good 750 watt PSU will put out around 60 amps on the 12 volt output. And a 750 watt Corsair will have four 6/8 plugs.

    Having said that, you can use a moles to PCI-e power adapter. The graphics card should have at least one packed with it.
  3. oh ok so even though it only has 1 6/8 pin pci-e power connector I could use a molex to pci-e connector to power it?
  4. for the 2nd PCI-E?
  5. You can use an adapter on both as long as you separate the cards on different 12v rails.
  6. I just want one graphics card, but usually most of the new cards require 2 6 pin PCI-E adapters, so why I was asking, so I can use the regular 6 pin pci-e that my PSU supplies and then a 6pin to molex adapter? For the newer cards? Such as the 4890 if I wanted it correct?
  7. ok cool thanks a lot
  8. Correct.
  9. TripGun said:
    You can use an adapter on both as long as you separate the cards on different 12v rails.

    The Molex and PCIe will be on the same rail since their are only 2 in total.
  10. This Power Supply will def be able to power my new Gigabyte Radeon HD 5870? I got the adapter, now have 2 6 pin pci-e connectors. Should be ok?
  11. wups, sorry was on my other screename stryder092, will my PSU, listed above, be able to support my new Gigabyte Radeon HD 5870? I think it should be fine considering the 5870 is very power efficient and it needs a 500 watt psu minimum, mine is 750 watt but very mediocre that guy says. It should be fine though?
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