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ilpirata79 (OP)
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June 19, 2013, 05:45:17 PM |
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Let me add some more details:
the CPU is mostly idle.
THe psu delivers hot air for sure... but it's not very noisy.
The GPU is quite hot. Am I sure that it will not burn?
Finally, I noticed that the pool site shows less mega hashes for my worker... now around 447.
Regards,
ilpirata79
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crazyates
Legendary
 Offline
Activity: 952
Merit: 1000
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June 19, 2013, 07:25:45 PM |
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Corsair is good brand. I would trust that to run a 7970 with no issues. BTW, I tried googling pics for that CX500, and it turns out they're Really, Really Nice!. |
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ilpirata79 (OP)
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June 19, 2013, 07:31:13 PM |
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go on ebay and buy a used hx750 for £50-60 and you will be ok for 2 7970s standard or 3 7950s
I will maybe buy a new one, but for the moment I can only use that one, which is: Q-tec 400W big fan... I have posted a photo. can you see it? Regards, ilpirata79 |
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crazyates
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Activity: 952
Merit: 1000
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June 19, 2013, 07:32:26 PM |
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the CPU is mostly idle.
THe psu delivers hot air for sure... but it's not very noisy.
The GPU is quite hot. Am I sure that it will not burn?
Yep, I can see the pic just fine. That 400W PSU can only handle 18A on the 12V line, and that's shared with your system (MB/CPU/RAM/HDD/etc). Your PSU is giving it all its got to power you GPU, so no wonder the PSU is hot. It's not really designed to run max out like that. Your PSU should not have any effect on your GPU temps, unless you PSU is dumping it's hot air inside the case, which I doubt. What are your GPU temps, anyways? I assume by only running just over 500MH/s that you're not overclocking at all. That's good, for this PSU. I would strongly recommend upgrading. That Corsair CX500 for $30 looks about as good a deal as any. If you're going to mine on a $350 GPU, you can spend 1/10th of that to make sure you're not going to damage it in any way.     |
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ilpirata79 (OP)
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June 19, 2013, 07:38:17 PM |
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the CPU is mostly idle.
THe psu delivers hot air for sure... but it's not very noisy.
The GPU is quite hot. Am I sure that it will not burn?
Yep, I can see the pic just fine. That 400W PSU can only handle 18A on the 12V line, and that's shared with your system (MB/CPU/RAM/HDD/etc). Your PSU is giving it all its got to power you GPU, so no wonder the PSU is hot. It's not really designed to run max out like that. Your PSU should not have any effect on your GPU temps, unless you PSU is dumping it's hot air inside the case, which I doubt. What are your GPU temps, anyways? I assume by only running just over 500MH/s that you're not overclocking at all. That's good, for this PSU. I would strongly recommend upgrading. That Corsair CX500 for $30 looks about as good a deal as any. If you're going to mine on a $350 GPU, you can spend 1/10th of that to make sure you're not going to damage it in any way. I am not overclocking (--auto-fan --temp-target 75 --thread-concurrency 8192 -g 2 -I 13 -w 256) and I get 557Mh/s. Here's the temperature. I set a target of 75°, so it's a bit strange: Default Adapter - AMD Radeon HD 7900 Series Sensor 0: Temperature - 77.00 C I will upgrade for sure if I find that Corsair. In the meantime do you think I can go to sleep without risking burning the house?  ) Regards and thanks, ilpirata79 |
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BlazinBeaches
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Activity: 98
Merit: 10
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June 19, 2013, 09:26:24 PM
Last edit: June 20, 2013, 09:16:45 PM by BlazinBeaches |
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Corsair is good brand. I would trust that to run a 7970 with no issues. BTW, I tried googling pics for that CX500, and it turns out they're Really, Really Nice!. very nice indeed |
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ilpirata79 (OP)
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June 20, 2013, 08:55:07 AM
Last edit: June 20, 2013, 09:07:54 AM by ilpirata79 |
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zackclark70
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Activity: 868
Merit: 1000
ADT developer
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June 20, 2013, 10:24:06 AM |
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hx 750 are only slightly louder but are cheaper |
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zackclark70
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Activity: 868
Merit: 1000
ADT developer
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June 20, 2013, 10:39:35 AM |
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im in the uk lol one sold lastnight for £35+£4.99 p&P |
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ssateneth
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Activity: 1344
Merit: 1004
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June 20, 2013, 10:59:20 AM |
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If a psu is not sufficient the computer will randomly reboot when you start taxing the system, or in some cases not start up at all.
Could it burn from the ground up? I think so... An underpowered PSU will not burn or destroy anything. However, a cheap nasty one, will. There's a difference. I actually think a 450W one will work for a single 7970, but same as what I said before, it has to be a single rail, and it can't be from a cheap manufacturer. Only use trusted brands. Edit: I would trust This PSU to power a 7970, even tho it's only a 450W. However, it's actually more expensive than the 500W I mentioned earlier, so idk why you'd want to do that. This is the exact same power supply I use for testing and burning in power hungry cards such as 5970 and 7970. I recommend it as well for the purpose of running a single 7970. For what it's worth, I run two 5970 on one of my 450 watt capstones, but undervolted while overclocked. No burning smell, very little heat, no random reboots, nothing. Rock solid. |
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zackclark70
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Merit: 1000
ADT developer
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June 20, 2013, 10:56:46 PM |
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it was bidding lol if i see another one going that cheap i will post it up for you |
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ilpirata79 (OP)
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June 24, 2013, 01:12:46 PM |
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The PC I was running the 400W psu is not responding anymore...
I even tried to run it while overclocking the graphic card (hd 7970, 1100Mhz core, 1350Mhz memory).
Just to be prepared to the worse: have I ruined the graphic card? Its fan is spinning though.
The hard disk does not turn on at all...
Could it be that I've just ruined the PSU?
Regards,
ilpirata79
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ilpirata79 (OP)
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June 24, 2013, 02:35:55 PM |
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That PSU is junk. Hopefully it didn't break any of your components. Throw it out and buy a quality brand name.
I will start and try to extract the hard disk and see if it works... regards, ilpirata79 |
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kwoody
Sr. Member
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Activity: 454
Merit: 250
Technology and Women. Amazing.
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June 25, 2013, 02:09:20 PM
Last edit: June 25, 2013, 02:19:27 PM by kwoody |
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http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028this will work fine. it is 600w, bronze certified, and single rail. with the promo code and rebate included, it is only $37.99. corsair being a reputable company is a plus.
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