You are using a CMPSU-750TX. This is a CWT manufactured power supply. Single 60A rail so no concerns there about what card to put where.
The power supply is rated for 50C operation, which is excellent. In fact in testing, they even loaded it to 900W DC (120%!) output: http://www.hardwaresecrets.com/article/Corsair-TX750W-Power-Supply-Review/505/8.
You would likely have no problems running this at 100% load 24/7 in a well-ventilated place.
Topic: pushing past 90% on a Bronze rated 80+ PSU - page 2. (Read 3668 times)
Great, ill give it a try with my Corsair.. ill put a smoke alarm by it just in case :-P
go with one of the seasonic OEM models..
Seasonic, XFX and Corsair AX line use these .. they are AMAZING power supplies that are extremely reliable and extremely quiet under high load.
They cost more though...
AndrewK, you arent factoring in efficiencies. Bronze is 82/85/82 efficiency at 20/50/100% loads. So if you have a 800W power supply, then at 100% capacity you will be pulling about 976 watts at the wall (800 / 0.82).
You can safely pull power while being "over spec" at the wall, so long as the actual DC load doesn't exceed the rated amount
..Well, sometimes you can make exceptions, depending on PSU quality. I had a NZXT HALE90 750 watt and I ran it about 10% over spec, something like 950 watts at the wall. It refused to shut off though. Nice power supply
.... Ninja edit before actually posting: Never mind, I misread your post AndrewK. You said what I said pretty much
You can safely pull power while being "over spec" at the wall, so long as the actual DC load doesn't exceed the rated amount
..Well, sometimes you can make exceptions, depending on PSU quality. I had a NZXT HALE90 750 watt and I ran it about 10% over spec, something like 950 watts at the wall. It refused to shut off though. Nice power supply
.... Ninja edit before actually posting: Never mind, I misread your post AndrewK. You said what I said pretty much
The certifications are for efficiency... Rated power is for output... Consider an 800watt 90+ certified PSU... at 880watts on a 90+ certified psu measured at the wall you'd be putting out: 792watts which is under the rated power of the PSU but just barely.
Honestly you need a kilawatt and you need to look at the amperage on your 12 volt rails. That will tell you what you can run. Test the rig with 1 6970... add another... then add the 7790. You can allways underclock components to bring it into line with your PSU. If you are running this system in a non climate controlled environment or don't like running your AC much in the summer you should also remember that the cards will pull a good extra 20 watts when their fans are running faster this summer.
Honestly you need a kilawatt and you need to look at the amperage on your 12 volt rails. That will tell you what you can run. Test the rig with 1 6970... add another... then add the 7790. You can allways underclock components to bring it into line with your PSU. If you are running this system in a non climate controlled environment or don't like running your AC much in the summer you should also remember that the cards will pull a good extra 20 watts when their fans are running faster this summer.
Great, ill give it a try with my Corsair.. ill put a smoke alarm by it just in case :-P
It will probably kill a cheap power supply in the short term,
but a good PSU is fine because they're usually rated for more.
See http://www.jonnyguru.com/modules.php?name=NDReviews&op=Review_Cat&recatnum=13
but a good PSU is fine because they're usually rated for more.
See http://www.jonnyguru.com/modules.php?name=NDReviews&op=Review_Cat&recatnum=13
I literally had to go out yesterday and buy a new powersupply. Kinda in the same boat...heres what happened. I had a wonderful Silverstone 700w that has been chugging along find for over 3 years. All the abuse a 4870x2 and serious overclocking could throw at it. I recently upgraded cpu/mb and got a new 7950...found out about mining and just had to get another 7950. Well...needless to say 700w is right at the threshhold needed to run 2 7950's(recommended is 850+) people say a high quality 750w+ will do the trick.
No such luck for me. Would boot windows fine and even mine for up to 20 minutes but then the system would crash. Went and got a Antec 900w and and cruising at 1.3 gh/s with zero issues.
Moral of the story. DO NOT cheap out on powersupplies. You will limit your production and have nothing but headaches.
zif
No such luck for me. Would boot windows fine and even mine for up to 20 minutes but then the system would crash. Went and got a Antec 900w and and cruising at 1.3 gh/s with zero issues.
Moral of the story. DO NOT cheap out on powersupplies. You will limit your production and have nothing but headaches.
zif
Ran mine at at 95% back then. I placed it on the floor on some spacers with the fan pointing down sucking drafty air from just above the floor boards.
Later the noise suppression filter on the AC line burned out, so I bypassed it together with the power switch.
It ran cool the exhaust air didn't feel warm at all.
Later the noise suppression filter on the AC line burned out, so I bypassed it together with the power switch.
It ran cool the exhaust air didn't feel warm at all.
I've been running two 7950s on a 700w PSU. The machine is consuming 675 watts on average. I have a 1200w PSU on order.
I have been seeing threads were people are pushing their PSUs up to their rated power. Some fail and some seem to live a good life (3+ years).
With a bronze rated 80+ PSU would it be too much to push around 93% of its total power? would i get more stales, and or slowly burn out my components do to inefficient power production? I take it that since its 80+ rated and i am not going past 100% of its power rating i am safe... but i figure i should ask the community.
I am looking to build a rig with two 6950s and one 7790 which puts me close to 700w on a spare CMPSU-750TX that i am not selling.
With a bronze rated 80+ PSU would it be too much to push around 93% of its total power? would i get more stales, and or slowly burn out my components do to inefficient power production? I take it that since its 80+ rated and i am not going past 100% of its power rating i am safe... but i figure i should ask the community.
I am looking to build a rig with two 6950s and one 7790 which puts me close to 700w on a spare CMPSU-750TX that i am not selling.
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