XFX Radeon HD 5770 System Requirements

• PCI Express or PCI Express 2.0 compliant motherboard with one X16 graphics slot
• 450 Watt or greater power supply with one 75W 6-pin PCI Express® power connector recommended (600 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode)
• Certified power supplies are recommended.
• Minimum 1GB of system memory

600w ... that's for the whole computer.

Works fine for this person (and others):

http://en.community.dell.com/owners-club/alienware/f/3746/t/19359142.aspx?PageIndex=1

You might also check your specs and math. The 5770 is fairly low-power ... I think it's more like 150w each. IIRC, it only has one 6-pin power connector. It's like a nVidia 260 in power consumption and capabilities.

http://support.dell.com/support/topics/global.aspx/support/dsn/document?c=us&cs=19&l=en&s=pub&docid=80D6B49F83305CB1E040AC0A64E9683E

http://support.dell.com/support/topics/global.aspx/support/kcs/document?c=us&cs=19&l=en&s=dhs&docid=DSN_84D6A6EDA59E9719E040AC0A64E97CC4&isLegacy=true

I have yet to see the whole power supply label from an Aurora 875w PS (with rails documented). Maybe you would like to upload it?

I've only been posting the stress tests I've seen every reviewer post.  Here's an example from LegitReview - http://www.legitreviews.com/article/1105/14/

I don't think it would run exceptional, except that there's two in Crossfire, which most tests put up numbers around 50 FPS on max settings.  I had seen that link (the one explaining what PSU ships with each Alienware) 

(Reposting, it cut half my response)

I've only been posting the stress tests I've seen every reviewer post.  Here's an example from LegitReview - http://www.legitreviews.com/article/1105/14/

I don't think it would run exceptional, except that there's two in Crossfire, which most tests put up numbers around 50 FPS on max settings.  I had seen that link (the one explaining what PSU ships with each Alienware) 

That link says it comes with a 1-1.2KW PSU, but that's confusing, given every other tech support (including the numbers when I built it on the website) said it came with 875W.

As soon as I receive it, I will definitely upload my findings.  In the meantime, still very confused in the discrepancy.

LOL that link to the dell chart is definitely backwards. The Auroras have the smaller PSUs.

That's what I figured, unless everything Dell has told me so far has been off.

I've only been posting the stress tests I've seen every reviewer post.  Here's an example from LegitReview - http://www.legitreviews.com/article/1105/14/

Good review, thanks.

Notice it says "Total System Power Consumption" ... that's a whole computer. It says 2x5770 pulled 396w and you will have 875w to use.

According to the chart. my single 5870 pulls about the same as 2x5770 (396w vs. 362w)

I don't have FurMark installed, but if I run Heaven Benchmark at 1920x1200, 4xAA, and other default settings ... my APC says the machine is only pulling 260w. 170w at idle. Those numbers match up good.

These PSUs are definitely sub par compared to corsair or other major brands for their wattage. BUT they should power your 5770's no problem.

I've only been posting the stress tests I've seen every reviewer post.  Here's an example from LegitReview - http://www.legitreviews.com/article/1105/14/

Good review, thanks.

Notice it says "Total System Power Consumption" ... that's a whole computer. It says 2x5770 pulled 396w and you will have 875w to use.

According to the chart. my single 5870 pulls about the same as 2x5770 (396w vs. 362w)

I don't have FurMark installed, but if I run Heaven Benchmark at 1920x1200, 4xAA, and other default settings ... my APC says the machine is only pulling 260w. 170w at idle. Those numbers match up good.

Thanks for taking a look at it.  I hadn't really realized it meant total computer wattage, I figured that was a stress test for the GPU alone.  Those look like much stronger numbers now.  My only remaining point of confusion was that I though each component could only connect to a single rail at a time.  That's why the really expensive Corsair's now run a single 12 Volt rail running at 40-60 amps, so that you don't get some rails overloaded and some rails with zero pull.

That's the general marketing trick, is to have a really high wattage PSU with very low amps on each rail.  

Oh, and unrelated question, but is running Furmark on these computers really that bad?  I know they put stress on the computer, but it shouldn't be more than it can handle.  I'm only asking because of the forum FAQ stating not to use it (though that was by NVIDIA, so idk).

My only remaining point of confusion was that I though each component could only connect to a single rail at a time.  That's why the really expensive Corsair's now run a single 12 Volt rail running at 40-60 amps, so that you don't get some rails overloaded and some rails with zero pull.   That's the general marketing trick, is to have a really high wattage PSU with very low amps on each rail.

Yes, that is why (overloading) ... but it's not a marketing trick. It's just the design (smaller circuits working together). Even the Corsair won't deliver the max rated 12v in real-life... for that to happen, all the other output voltages with have to be zero (in which case the PC wouldn't run).

If you have a PS with multi-rail 12v, and your video card has 2 power connectors, it would work (device is powered by more than 1 rail at a time).

As for the FurMark question ... many machines and systems (computers, cars, whatever) will operate at max or red-line for some time. However, it can accelerate wear-and-tear and longevity of the machine. Some chips run on the hot-red-line better than others. Some people rely on "governors" to protect them, but they aren't always set properly.