Pages:
Author

Topic: PSU for PC with one ATI 7970 (Read 4118 times)

sr. member
Activity: 454
Merit: 250
Technology and Women. Amazing.
June 25, 2013, 09:09:20 AM
#36
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

this 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.
sr. member
Activity: 353
Merit: 253
June 24, 2013, 09:35:55 AM
#35
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
sr. member
Activity: 353
Merit: 253
June 24, 2013, 08:12:46 AM
#34
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
legendary
Activity: 1344
Merit: 1004
June 20, 2013, 05:59:20 AM
#31
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.
legendary
Activity: 868
Merit: 1000
ADT developer
June 20, 2013, 05:24:06 AM
#28

hx 750 are only slightly louder but are cheaper
sr. member
Activity: 353
Merit: 253
member
Activity: 98
Merit: 10
June 19, 2013, 04:26:24 PM
#26
Here's a corsair you could grab, on the middle of the page with rebate.

http://www.newegg.com/DailyDeal.aspx?name=DailyDeal&cm_sp=Dailydeal-_-adlink-_-06192013&Page=2
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 Cheesy
sr. member
Activity: 353
Merit: 253
June 19, 2013, 02:38:17 PM
#25
The PSU is this one... not even 450W

https://www.dropbox.com/s/wmkz3rz85tzrzxf/foto.JPG

Do you see the image?         

Can the PSU continue in your opinion?
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.  Wink Cheesy Grin Cool

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? Smiley)

Regards and thanks,
ilpirata79

legendary
Activity: 952
Merit: 1000
June 19, 2013, 02:32:26 PM
#24
The PSU is this one... not even 450W

https://www.dropbox.com/s/wmkz3rz85tzrzxf/foto.JPG

Do you see the image?         

Can the PSU continue in your opinion?
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.  Wink Cheesy Grin Cool
sr. member
Activity: 353
Merit: 253
June 19, 2013, 02:31:13 PM
#23
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
legendary
Activity: 952
Merit: 1000
June 19, 2013, 02:25:45 PM
#22
Here's a corsair you could grab, on the middle of the page with rebate.

http://www.newegg.com/DailyDeal.aspx?name=DailyDeal&cm_sp=Dailydeal-_-adlink-_-06192013&Page=2
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!.
sr. member
Activity: 353
Merit: 253
June 19, 2013, 12:45:17 PM
#21
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
legendary
Activity: 868
Merit: 1000
ADT developer
June 19, 2013, 12:43:02 PM
#20
go on ebay and buy a used hx750 for £50-60 and you will be ok for 2 7970s standard or 3 7950s
sr. member
Activity: 353
Merit: 253
June 19, 2013, 12:40:39 PM
#19
The PSU is this one... not even 450W

https://www.dropbox.com/s/wmkz3rz85tzrzxf/foto.JPG

Do you see the image?

Now I am mining. I am getting this kind of output:


[2013-06-19 17:20:41] Started cgminer 3.2.1                    
 [2013-06-19 17:20:41] ADL found less devices than opencl!                    
 [2013-06-19 17:20:41] There is possibly more than one display attached to a GPU                    
 [2013-06-19 17:20:41] Use the gpu map feature to reliably map OpenCL to ADL                    
 [2013-06-19 17:20:41] WARNING: Number of OpenCL and ADL devices did not match!                    
 [2013-06-19 17:20:41] Hardware monitoring may NOT match up with devices!                    
 [2013-06-19 17:20:41] Probing for an alive pool                    
 [2013-06-19 17:20:46] Disabling extra threads due to dynamic mode.                    
 [2013-06-19 17:20:46] Tune dynamic intensity with --gpu-dyninterval                    
 [2013-06-19 17:20:46] Network diff set to 19.3M                    
 [2013-06-19 17:20:47] Thread 1 being disabled                    
 [2013-06-19 17:20:47] Accepted 89b09b1f Diff 1/1 GPU 0                    
 [2013-06-19 17:20:47] Accepted bf4c5bca Diff 1/1 GPU 0                    
 [2013-06-19 17:20:51] Accepted e9393ace Diff 1/1 GPU 0                    
 [2013-06-19 17:21:03] Accepted 120d6aa9 Diff 14/1 GPU 0                    
 [2013-06-19 17:21:12] Accepted 6d427b75 Diff 2/1 GPU 0                    
 [2013-06-19 17:21:14] Accepted 2b3a7eaf Diff 5/1 GPU 0                    
 [2013-06-19 17:21:19] Accepted 16a57197 Diff 11/1 GPU 0                    
 [2013-06-19 17:21:28] Accepted cffb12ca Diff 1/1 GPU 0                    
 [2013-06-19 17:21:35] Accepted 33fe23c3 Diff 4/1 GPU 0                    
 [2013-06-19 17:21:42] Accepted 3ef7e995 Diff 4/1 GPU 0                    
(5s):514.9M (avg):515.9Mh/s | A:10  R:0  HW:0  U:10.0/m  WU:10.0/m          
 [2013-06-19 17:21:48] Accepted 9d5a32b8 Diff 1/1 GPU 0                    
 [2013-06-19 17:21:56] Accepted 8508d7e3 Diff 1/1 GPU 0                    
 [2013-06-19 17:22:00] Accepted 0c5e8bc3 Diff 20/1 GPU 0                    
 [2013-06-19 17:22:11] Accepted 16e65470 Diff 11/1 GPU 0                    
 [2013-06-19 17:22:28] Accepted 4be54530 Diff 3/1 GPU 0                    
 [2013-06-19 17:22:34] Accepted 8c55d389 Diff 1/1 GPU 0                    
 [2013-06-19 17:23:19] Accepted 76f45afe Diff 2/1 GPU 0                    
 [2013-06-19 17:23:28] Stratum from pool 0 requested work restart                    
 [2013-06-19 17:23:30] Accepted f3cbf634 Diff 1/1 GPU 0                    


Can the PSU continue in your opinion?

Regards,
ilpirata79  
member
Activity: 98
Merit: 10
June 19, 2013, 12:35:25 PM
#18
Here's a corsair you could grab, on the middle of the page with rebate.

http://www.newegg.com/DailyDeal.aspx?name=DailyDeal&cm_sp=Dailydeal-_-adlink-_-06192013&Page=2
legendary
Activity: 952
Merit: 1000
June 19, 2013, 12:17:55 PM
#17
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.
Pages:
Jump to: