HD 5770 Power Requirements

[edplayer]

When I forceably massively overclocked my 5770 it used nearly 300w. Pumping up both voltage and maxing out processor and ram speed pushed way beyond catalyst settings.. with max CCC clocks at high durations it pulled 200-225w peak after a hour or so of gaming and when cold it pulls mid 170w type draws at full load if your gaming for less then 60 minutes. As tempautres went up over time it started drawing more current. Typically BTW of silicon devices.

I verified this with a amp probe twice.

Your mileage may vary and I declocked and put stock cooling back on. I just didn't need the extra performance right now. But it was fun to tinker.

idle consumption was always good unless way overclocked. 18-20w idle and with stock settings it peaked for power useage around 150w or so. Using the catalyst panel you can push consumption up. to just over 200w.

I really don't care what people have published. this is with a refrence card design hd5770 that I have in my hand and use dialy.

Get a big power supply and a good one.If you plan to run the card at stock settings 550w Ps will be plenty. If you plan to overclock and overvoltage get a big power supply.

Maybe you know a lot about electronics so,

What do you think of the methods they use at Xbitlabs to test videocard power consumption? Look here:

http://www.xbitlabs.com/articles/video/display/gpu-power-consumption-2010_2.html


To me it seemed like the most advanced test (just for power use) of all the hardware sites that I view. And what do you think of their numbers for the 5770? I think it used sub 80 watts for Crysis. Most other review sites will measure the whole system at the wall (I assume with a kill a watt or a Brand 1850) and also get results around 80 watts. Are they all wrong and if so, do you know why they are all getting low results?

This is because you say a stock 5770 will peak around 150 watts

 

[thedosbox]

When I forceably massively overclocked my 5770 it used nearly 300w.

The above is B.S. unless you've somehow modified the power regulation on the video card and motherboard.

Even then, upping the voltage isn't going to double the power consumption of a card that uses a single six-pin PCI-E connector. That connector can deliver 75W. Add 75W from the motherboard, and you have a absolute maximum of 150W.

 

[tweakboy]

Wow only 85 watts, how about the 5870 ? The 4xx wattage is too much 335watts ? wtf,,, their next gen better be no more then 200 watts power drawn from card. thx and thx again

 

[Idontcare]

Hi everyone,

In researching a new video card, I saw in another thread where someone recommended 20A on the 12v rail for the HD 5770. The box for my Seasonics 550W shows 18A on the 12v rail. Is my PSU sufficient to run this card? I will not be doing any heavy gaming.

Thanks.

Processor: Intel E6600 Core 2 Duo 2.4GHz
CPU Cooler: Arctic Cooling Freezer 7 Pro
Motherboard: Intel D975XBX2
Memory: 3G (1Gx2 + 512MB x 2) Crucial Ballistix DDR2 800 (PC2-6400) CL4
Video Card: Sapphire ATI Radeon X1950XT 256 MB
Power Supply: Seasonics S12 Energy 550W

You got lots of good advices in here already but you might also want to try the Power Supplies forum for some PSU advices, much larger audience of folks there who can give you an even wider perspective.

 

[edplayer]

Yes it can and I am not going to even begin to tell other how to do it.

I guess that you were at least telling the truth about this part.

Supar Sekret

:ninja:

 

[thedosbox]

I guess that you were at least telling the truth about this part.

Supar Sekret

:ninja:

Well, it's not the first time he's made the claim and not backed it up. Except that this time he managed to bump it up to 300W.

 

[BFG10K]

Locking a necro thread.


Super Moderator BFG10K.