I'm pondering over buying a SAPPHIRE ATI Radeon HD 5770 card. On the cards specs it says 500w minimum but i have read about other people being able to run it on 380W Power supply. Would a 380W Antec be enough? Cause im not really wanting to buy a new power supply.
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Is 380W enough for a 5770
- Thread starter drumdogg
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I know the Antec earthwatts power supplies are of a good quality and would be fine for that graphics card.
Would depend on the rest of the setup though.
Would depend on the rest of the setup though.
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Well it should be fine for that graphics card. But anything above that and there may be a problem.
I've run systems before as power hungry as that in a shuttle based system with only 300W power supply and had no problem.
Just comes down to the quality of the power supply rather than just thinking about the watts it is rated at and antec are normally very good.
I've run systems before as power hungry as that in a shuttle based system with only 300W power supply and had no problem.
Just comes down to the quality of the power supply rather than just thinking about the watts it is rated at and antec are normally very good.
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expect it to blow sooner or later running it near max
Rubbish.
380w should be fine as it's a quality Antec unit. The 5770 isn't hugely power-hungry.
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I recall them saying recommend wats was a 450watts, but all is fine with a 400watter Corsair p/s.
I think just to be on the safe side they always add too much in the requirements but if u got a good p/s like antec or corsair your safe, your not gaming for 5 days straight exactly
I think just to be on the safe side they always add too much in the requirements but if u got a good p/s like antec or corsair your safe, your not gaming for 5 days straight exactly
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the 5770 use's 108w at full load for a kick off , i have had a 3870x2 take out a seasonic 550w and that was only 176w full load . so it does not always work out the way you think , why do you think amd say "450 Watt or greater power supply with one 75W 6-pin PCI Express® power connectors recommended"
http://www.amd.com/us/products/desk...5770/Pages/ati-radeon-hd-5770-overview.aspx#3
Soldato
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Test done with an i7 @ 3.33Ghz, 80Gb SSD and 6Gb ram.
test was said to be incorrect by some people (cant find it now either) , but why risk it as it could take out your system when the psu start to break down with useage/age
I did a bunch of tests with my system.
5770 crossfire idle = 145w
5770 crossfire load = 310w
5770 single idle = 135w
5770 single load = 220w
5850 idle = 150w
5850 load = 270w
So given my single 5770 at load with an overclocked Q9550, 3x SATA drives, 3x 180mm fans and 2x 120mm fans only drew 220w (at the socket, so only 176w based on PSU efficiency of 80%), the OP will be fine.
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Then those "people" are mis-informed, Anand's results are born out but other review sites like Bi-tech who got 216 watts (Core i7 965) running a 3Dmark06 test. Anand's results are a bit higher because Furmark pushes your whole system a lot harder then 3Dmark06 and doesn't necessarily reflect the amount of stress a regular game will put your PC through so in actualy practice he's system won't even be drawing anywhere near those numbers.
Sapphire are quoting 500 watts probably because ideally you should run your PC at around half the power draw of your PSU because at 50% your PSU is at it’s most efficient. Also they don’t want to have to RMA video cards that have died as a result of crappy low end PSU’s that have over-volted their hardware causing it die.