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Radeon HD 6670 on a 275W PSU

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May 14, 2012 7:04:54 AM

So i have an Optiplex 745 SFF computer and im planning on buying a HIS Radeon HD 6670 with Dual Fans for my case, however i have a 275W Dell PSU (Single Rail) with 17A on the +12V and 18A on the 5V. Im running a Pentium D processor and 5GB of DDR2 (2X2GB) (2X1GB) and a 2.5 HDD. Would the Stock PSU be able to handle a HD 6670 as well?

If not, would the SeaSonic SS-300 be able to handle that setup? (http://www.seasonicusa.com/tfx.htm) (2nd one down) at 18A on the +12V? (Also, can someone explain what the 12V1 and 12V2 mean since they are at 18A each? Does that mean 36A total?)

(Oh, also, i have attempted searching but i was not really sure based on what i have found and the fact that am running a Pentium D which i think pulls more)
Thanks for any help, sorry to have made it so long lol

More about : radeon 6670 275w psu

a c 84 U Graphics card
May 14, 2012 7:26:06 AM

for that psu get an hd 6570.:) 
a b U Graphics card
May 14, 2012 7:29:29 AM

You can find out what CPU you have by right clicking on ''My computer'' and selecting properties or something (english is not my first language). Your current PSU should be able to run it but I seriously advice against it. Get the Seasonic one or, if possible, a better one. Corsair, Antec and Seasonic make good ones. One with 450watts just to be on the safe side would be the better option
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a b U Graphics card
May 14, 2012 7:32:02 AM

the 7750 would be a better choice as it has better performance and lower power. still cutting it close though
a c 84 U Graphics card
May 14, 2012 7:44:21 AM

btw the hd 6570 uses about 50w as max tdp and the hd 7750 uses about 55w as max tdp i m not sure about hd 7750 it can be riskier but the hd 6570 are working with many psu with 16a on 12v rail.:) 
a b U Graphics card
May 14, 2012 8:57:01 AM

I've actually seen the 6570 rated at 44W.

The 7750 is better than the 6670 for power and performance, but sunnk is certainly right the 6570 is safer. And 60 bucks cheaper if it will give the performance you need.

So maybe we skipped a step. What's your resolution, what games do you play, and what settings do you want to play at? Then we can determine what you need to get there.
May 14, 2012 3:43:47 PM

Well i would be playing like Fallout 3 or Battlefield on medium-high? The 7750 is out of the question as i need a low profile card or one that has the brackets to be able to fit it in my case. Most likely at around 1280x1024. So even with the SeaSonic is the 6670 out of reach? I was mostly leaning towards the HIS GDDR5 6670 because it had two fans and i was worried about it heating up in such a small case.
May 14, 2012 4:36:39 PM

defcon545 said:
Well i would be playing like Fallout 3 or Battlefield on medium-high? The 7750 is out of the question as i need a low profile card or one that has the brackets to be able to fit it in my case. Most likely at around 1280x1024. So even with the SeaSonic is the 6670 out of reach? I was mostly leaning towards the HIS GDDR5 6670 because it had two fans and i was worried about it heating up in such a small case.


Unless I am mistaken, the 7750 is a low profile card, taking up only one slot. Anand says the load rate in Metro 2033 is 216W.
May 14, 2012 4:57:32 PM

Can you provide a link? The one im seeing seems like it is not low profile and takes up two slots in the back. (Not PCI just the Bracket slots.)
May 14, 2012 8:04:54 PM

Im not sure if you guys really understood, the card needs to fit in an HTPC type slot which is why it needs to have a low profile bracket or be HTPC ready. Thats why i was seeing about the 6770 and why i cant seem to find a 7750 that would fit.

So would the 6570 be sufficient for playing battlefield? Or do i need to upgrade the PSU and get the 6670?
May 23, 2012 6:32:01 PM

I have a Dell Optiplex 760 (exact same form factor as your 745). I have an HD 6670 in there and it runs no problem. I'm pretty sure the PSU is 235W. It also says on the motherboard, right next to the PCIe slot, the max power the slot provides. Might be different on your board, so check that too.
May 24, 2012 5:01:28 AM

My 745 has a 275W, either way though i decided to buy an TT V3 case, ATX Mobo/ 350w PSU and move over. I really don't like how the SFF heats up.
a c 191 U Graphics card
May 24, 2012 5:08:38 AM

thezooloomaster said:
Unless I am mistaken, the 7750 is a low profile card, taking up only one slot. Anand says the load rate in Metro 2033 is 216W.


Low profile=small:


Single slot=thin:
May 24, 2012 5:45:06 AM

What i had meant then is that i needed one with a Low Profile bracket to fit in a slim form factor case, i didint know that low profile also meant the width of the card.
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