Split between PSU decision...

I've been looking to upgrade my computer the last couple of weeks, basically I was planning to upgrade my graphics card and replace the thermal compound/paste on my CPU with some AS5. Sounded simple enough, I suppose.

The graphics card I'm upgrading to is the AMD Radeon HD 6570 (current one is Radeon X1550).

I checked the requirements tab on AMD's website, and the recommended power that AMD recommended was 400Ws. Then I checked my PSU; it was only rated at 300W.

Now over the next two days I quickly figured out something about PSUs. My computer is a low-profile, small form factor case. It will only fit any PSUs of the TFX (thin form-factor) variety, I believe. There's not many PSUs for those! I have yet to see one that has been rated for 400w (TFX). Almost all are 300W or less even.

There's only two matches I've found that I can purchase, but I'm split between enough wattage vs. good quality. :??: Is 300 watts even enough?

Seasonic 300TFX 300w:


Athena Power TFX35 350w:

Essentially, would 300w be enough to power my system, or on the other hand, is the one by Athena good enough quality?

My system specs:
Motherboard: ASUS M3A78-CM
Processor: AMD Athlon X2 7750 Dual-Core (Socket am2+)
4gb DDR2 Memory (1gb x 4)
Hitachi 7200 RPM SATA Harddrive x1
DVD/CDRW Combo x1
AverMedia PCIe HD DVR (PCI-e x1 slot)
One 80mm fan (I -think- its 80mm) for the CPU. (and the new PSU would have a fan too)
Windows 7 x64bit

In any case, here's the one I'm currently using:
5 answers Last reply Best Answer
More about split decision
  1. 6570 doesn't use a lot of power, you might be able to use your current PSU. More so if you don't OC anything.

    I vote Seasonic if you do buy a new PSU.
  2. One thing I noticed is that the 12V1 & 12V2 lines is at only 11a each on the Athena psu. I think I've done my research right, and 11 amps is not enough. 18-20a is recommended.

    I think I will buy the new Seasonic one, it's better quality compared to my current one probably (IN Win, had it for a few years), and it does offer about 10 more watts on the 12V lines, I've seen a bad review on another Athena PSU that doesn't sound exactly promising.

    If I find that's not enough power for everything, I'll consider upgrading my case, I guess, and get a psu that is.
  3. The Seasonic is the best in class unit.
  4. Best answer
    For a system running with a single Radeon HD 6570 graphics card a power supply with a combined +12 Volt continuous current rating of 18 Amps or greater is recommended.

    Your In Win IP-S300FF1-0 300W TFX 12V v2.1, with its combined +12 Volt continuous current rating of 20 Amps is sufficent to meet the requirements.

    It is not the wattage of the power supply that determines if it is sufficient to properly power the system. The only power supply specification that matters is its combined +12 Volt continuous current rating.
  5. Best answer selected by vingamer234.
Ask a new question

Read More

Power Supplies Components Product