Can anyone help with the Rail setup for PSU for my AMD GPU?

[Sunny Kapoor]

Can anyone tell whether my PSU rail setup is correct here? Is it possible wrong PSU rail setup is making the sapphire R9 390 draw more/less power, causing artefacts in Blender?

This is my current setup.

This is PSU setup

Psu wire setup

My UPS APC BackUp RS 600 gives bleeping sound when running Uni Heaven benchmark, games with AMD GPU or sometimes rendering in Blender with this setup. So I had to remove it from UPS and insert in wall socket.

It should not go over 600 W.

This is my cpu setup

Intel Core i7 950 @ 3.07GHz
24.0GB Corsair Vengence RAM
8192MB ATI AMD Radeon R9 390 Series (Sapphire
ASUS DRW-24B1ST ATA Device
2 seagate internal drives
1 seagate expansion USB drive
Cooler Master seidon 120 V+ radiator and fan connected to the motherboard, pump is connected to the molex.
4 cooler master sickle flow fans
1 x 120 mm stock fan
1 x 200 mm stock fan
Silent pro Cooler Master 700 W

edit: the fourth molex has 3 fans connected with the cpu cooler pump in the pic above.

 

[Eximo]

If I have the right power supply, you don't have multiple rails. Doesn't matter where you plug in things.

You have a 700W output supply so that can easily pull well over 700W from the wall.

I7-950 can draw nearly 200W when overclocked. R9-390 isn't exactly light on its feet either. Lot of fans, lot of ram, I wouldn't be surprised if you can spike that up to significant values.

Keep in mind that power supplies and UPS age and lose capacity over time (literally the capacitors lose capacity) So overtime it should draw a little more as the main caps deteriorate.

 

[Hawkshot]

Single rail PSU so there is no way its wrongly setup, but the 700W PSU may have declined over the time you've had the system, as your CPU,GPU and RAM have a fairly high power draw, ontop of this I can see you have liquid cooling and multiple case fans meaning you may be nearing the max output of your PSU, maybe look into upgrading this?

 

[Eximo]

Without fans I show a recommended 557W supply for your build. Any heavy game will put a good load on the CPU and certainly the GPU if you let it render as many frames as possible. I think you should step up to at least an 850W.

 

[blazorthon]

By my math, it could easily pull around and even a little over 600W. Assume about 175W from the CPU at peak, 275W from the graphics at peak, and throw in another 50W for other components for good measure, and you have about 500W peak output. Then divide by the average efficiency (I guessed around 82%) and you get 610W input to the power supply.

That was just pulling very basic estimations for the numbers, so the exact values will vary, but it certainly shows that 600W input power (or higher) is not unrealistic. You should get a higher capacity UPS if you really want to use one. Something like a 1KW UPS would be more reasonable. I also agree with the others that a better power supply might be in order.

 

[geofelt]

Virtually all mpdern power supplies are actually one power generating rail.
The divisions you see are UL safety divisions and anything connected should be able to deliver what the outputs require.

Looking at the photos, It looks like one graphics power connector has only 6, not 8 pins inserted. That can cause artifacts.

Your card can draw 375w all by itself(2 8 pin@150w + 75w for the pcie slot)
Add in the cpu and a bunch of peripherals, and you can easily demand over 600w.
The psu is 80+ efficiency.
At 80% efficiency, that can be a wall draw of 720w.

 

[Sunny Kapoor]

Virtually all mpdern power supplies are actually one power generating rail.
The divisions you see are UL safety divisions and anything connected should be able to deliver what the outputs require.

Looking at the photos, It looks like one graphics power connector has only 6, not 8 pins inserted. That can cause artifacts.

Your card can draw 375w all by itself(2 8 pin@150w + 75w for the pcie slot)
Add in the cpu and a bunch of peripherals, and you can easily demand over 600w.
The psu is 80+ efficiency.
At 80% efficiency, that can be a wall draw of 720w.

Well before buying the GPU I asked the vendor that will my PSU work for sapphire, else I will not buy the CPU cooler. He said it will work.

My plan is to put two sapphires in this setup for faster rendering, so I will buy 1500 W psu just for extra over loading with two Sapphires. The cost is the problem, I have spent 50 K for getting sapphire, RAM and Cpu cooler. That 1500 W psu will cost another 20 K.

Will there be any problem if I keep using the wall socket for now and buy a new PSU by February with a UPS.

I do not have a lot of fluctuations or load shedding here. Will my PSU survive, it is 4 years old?

Power connectors have both 8 pins, they are like these

 

[Sunny Kapoor]

By my math, it could easily pull around and even a little over 600W. Assume about 175W from the CPU at peak, 275W from the graphics at peak, and throw in another 50W for other components for good measure, and you have about 500W peak output. Then divide by the average efficiency (I guessed around 82%) and you get 610W input to the power supply.

That was just pulling very basic estimations for the numbers, so the exact values will vary, but it certainly shows that 600W input power (or higher) is not unrealistic. You should get a higher capacity UPS if you really want to use one. Something like a 1KW UPS would be more reasonable. I also agree with the others that a better power supply might be in order.

What kind of UPS will be required for running two saphire r 9 390?

 

[Sunny Kapoor]

If I have the right power supply, you don't have multiple rails. Doesn't matter where you plug in things.

You have a 700W output supply so that can easily pull well over 700W from the wall.

I7-950 can draw nearly 200W when overclocked. R9-390 isn't exactly light on its feet either. Lot of fans, lot of ram, I wouldn't be surprised if you can spike that up to significant values.

Keep in mind that power supplies and UPS age and lose capacity over time (literally the capacitors lose capacity) So overtime it should draw a little more as the main caps deteriorate.

I7 950 I have not overclocked it, but I might under clock Saphire. If I under clock it say by 5 %, will that make it more stable regarding rendering artefacts and using less power ? I mean the core speed.

 

[geofelt]

Are both the 6 and the +2 both inserted into the graphics card?
The photo showed an empty +2 space.

No problem not using a UPS.
Why do you need a UPS anyway?
If you need to condition flaky power or run through power fluctuations, then a good UPS will help.
Or, if you need time to gracefully shut down after a power outage, then the battery backup part is good.
Even a very good unit will not keep you running for an hour.

 

[Sunny Kapoor]

Btw which 1500 W PSU will have 4 x 8 pin PCie wires? and not 6 + 2 like mine current ones above.

 

[blazorthon]

With two graphics cards, you might want something more like a 1.2KW or somewhat higher UPS. Ideally, it may be safest to go up to 1.5KW.

Underclocking can help with stability, but it is not guaranteed to fix the problem, especially if the problem is caused by the PSU being run at its limits. PSUs running near their limits can easily degrade by as much as around 10% per year, especially in lower end models. Running at or past its limits can do things like increase ripple, which often has negative effects on stability.

 

[Sunny Kapoor]

Are both the 6 and the +2 both inserted into the graphics card?
The photo showed an empty +2 space.

No problem not using a UPS.
Why do you need a UPS anyway?
If you need to condition flaky power or run through power fluctuations, then a good UPS will help.
Or, if you need time to gracefully shut down after a power outage, then the battery backup part is good.
Even a very good unit will not keep you running for an hour.

The angle of the pic makes it look like 2 slots are empty, but they are all connected.

yes for power outrage, especially when I am rendering, sometimes sudden shut downs corrupt the 3D files.

 

[Sunny Kapoor]

With two graphics cards, you might want something more like a 1.2KW or somewhat higher UPS. Ideally, it may be safest to go up to 1.5KW.

Underclocking can help with stability, but it is not guaranteed to fix the problem, especially if the problem is caused by the PSU being run at its limits. PSUs running near their limits can easily degrade by as much as around 10% per year, especially in lower end models. Running at or past its limits can do things like increase ripple, which often has negative effects on stability.

I am just worried that it will blow up inside my case

Maybe it can survive for 2 more months, I will be out for whole of December.

 

[geofelt]

On the psu, buy a tier 1 unit from this list:
https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx?Redirected=true
I might suggest a Seasonic X1250 unit
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151109
It is stronger than you need, but a psu will only draw what it needs, regardless of the max rating.
A psu will operate most efficiently in the middle third of its range.

It has 8 6+2 connectors. All good power supplies will use the 6+2 method to give the flexibility of attachment.
I see no negative with this.

Gold or platinum rating is more efficient and will reduce the requirements on your UPS.
There are two inputs to deciding on a UPS, 1. what wattage does it need to handle, and 2. for how long.
You can go tp APC which is a noted ups maker and they will have a calculator to help.

 

[Sunny Kapoor]

On the psu, buy a tier 1 unit from this list:
https://community.newegg.com/eggxpert/computer_hardware/f/135081/t/45344.aspx?Redirected=true
I might suggest a Seasonic X1250 unit
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151109
It is stronger than you need, but a psu will only draw what it needs, regardless of the max rating.
A psu will operate most efficiently in the middle third of its range.

It has 8 6+2 connectors. All good power supplies will use the 6+2 method to give the flexibility of attachment.
I see no negative with this.

Gold or platinum rating is more efficient and will reduce the requirements on your UPS.
There are two inputs to deciding on a UPS, 1. what wattage does it need to handle, and 2. for how long.
You can go tp APC which is a noted ups maker and they will have a calculator to help.

Difficulty is I will not get many of these in my city. I will most probably find only cooler master or antec.

I will use the APC calulator to find out the model that works.