[Urgent] PSU Selection - Totally Confused!

[mazkraven]

Okay guys so after a looooooooooooooooong discussion over in the 7850 thread finally I got me a 7870XT i.e. Club3D 7870 JokerCard XT.
So PSU came out to be a real problem there so I sold my CM 500W to a member here on PG. I selected Antec's TP-750 which looked sufficient and compatible with my Graphics Card but today guys at AU Tech faced the same problem.. They installed a 7870 XT in a Core i7 rig which had a FSP EPSILON 900W unit in it.. they turned on > fan rotated > fan turned off > started rotating at full speed > no display, similar to what happened on my side.
They emailed CLUB3D about the problem and this is what club3d said:

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The problem here is the power supply.

Please note the following;

The power supply he has the Amperage is quite low, in this case is 20A or (20A x 12V = 240W)

He is using an Intel i7 so the mainboard requires a 8PIN CPU PCIE power connector (150W) on his rail 1 or +12V1
Depending on the CPU version, the I7 can use up to 130W of power Intel Core - Wikipedia, the free encyclopedia and if he chooses to use the same rail on the cables, his system will have issues as it will not power on.

The HD 7870XT uses a TDP of 210 but under full load, it will consume 265W or 22A (265W/12v). Follow this reference Club 3D Radeon HD 7870 Joker im Test bei GameStar.de

CONCLUSION
Needs a better power supply. The 900W power does not mean anything as the rail amperage is too low. In order to have a better performance power supply for gaming he needs to focus on Amperes. 35A+ is best for high end components. You can follow an example on our power supplies site, check under input and output CSP-D850CB 80 PLUS® Bronze Certified Power Supply - Graphic solutions GeForce & Radeon

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Alright so hope you've understood their reply..
Now my question is that Antec's TP-750 has Quad 12V rails with 25A on each one.
It means that it is not compatible with GPU.. So which Single Rail PSU should I go for?
Now I need a better 650W+ Unit. I've dropped the TP-750 cause of this.
I'm aiming for XFX 750W or Corsair TX650V2.
Need your suggestions..
@haroonshaikh @hasanJ @AbbY @Dragg3r @Shining Wizard @syedfarazahmed @Shary Bhallu TC @LeGenD123 @Baghi

 

[seskypwince]

My advice click here

 

[mazkraven]

My advice click here

Bro isn't the XFX one a better buy?
I saw somewhere on hardwaresecrets or jonnyguru that XFX psus are manufactured by Seasonic!

 

[Bonhomie]

Bro isn't the XFX one a better buy?
I saw somewhere on hardwaresecrets or jonnyguru that XFX psus are manufactured by Seasonic!

you heard that right! even a 600W from High Quality Brand would be suffice.

What's your Budget?

 

[seskypwince]

Bro isn't the XFX one a better buy?
I saw somewhere on hardwaresecrets or jonnyguru that XFX psus are manufactured by Seasonic!

yes bro you're right but their price is high as well. If you're looking for used then you can find Thermaltake Toughpower xt tpx-775m here on pg market. It totally depends on your budget.

 

[syedfarazahmed]

iThink you should go for Corsair their prices are higher but their Quality is great and its a better brand.

 

[Generall]

This reply seriously raises my doubts about this Club3D company. The specific PSU has 20 Amps on each one of it's four rails, and can provide a total of 840 Watts ( 70 AMPS total on +12 V ). Here's a review in which it is providing 62 Amps.
Their conclusion should have been something like " The only problem here is the way in which the rails are connected. The 12V1 should provide power to the CPU, so connect it to the 8 pin connector on the motherboard. One of the two connectors of the GPU should be provided power through 12V2 and the other connector, through 12V4. This should provide 20 + 20 Amps to the Graphics card and 20 Amps to the CPU, which should be more than enough."

 

[07ee17]

Try this, will cost you around 10k.
GX-750W - Cooler Master - Leading Provider of Computer Case, Cooler, Power Supply, Laptop Cooling, Gaming Peripherals

 

[seskypwince]

^ GX-750 cannot handle heat at 750W also has ripple issues on the 3.3v rail.

 

[hasanJ]

[MENTION=38670]mazkraven[/MENTION]
There is no possible way that an HD7870XT is gonna fail to run on a 900W PSU unless there is a problem with the PSU

Let me elaborate

The HD 7870XT uses a TDP of 210 but under full load, it will consume 265W or 22A (265W/12v). Follow this reference

This is FALSE
Because as per the review (Which is in German so i ran a google translate) the 265W of Power Consumption is for the ENTIRE System

The original HD7870XT as per Techpowerup and Guru3D did not go above 127W under full Gaming Load
Under furmark it showed ~144W

For u system a good 500W PSU like Xigmatek NRP PC502 is more than enough (444W or 37Amps on 12V)
600W in this case is a bit overkill and anything above is simply a waste

I strongly believe there is a problem with the card IF u have checked it on ur CM 500W aswell
despite the fact that CM 500W is not enough, the system would boot and run under that PSU

 

[KDKHAN]

There is no card on earth which need a 900W PSU. Maximum Power requirement recommended for the most hungry cards is 700~750w whereas your card need a solid 500W PSU for successful operation. So a PSU of 500~600 watt of some known brand like Corsair, Antec or Xigamatek should be fine provide your GPU OK. If there is something wrong with the GPU, even a 1000W brick will not be able to overcome the issue.

 

[EternalBlizzard]

@mzkraven
a silent pro gold 600w or gs600w.... should work fine i guess

Club 3D HD 7870 jokerCard Tahiti LE 2 GB Review | techPowerUp

 

[Baghi]

Folks at Club3D and AUTech seems completely and utter n00bs. Have they ever heard about "Power Distribution of v12+ rails"? And yes, XFX PSUs are manufactured by Seasonic. 550W will do, with all the overclocks you can squeeze out of your components on air. Anything more than 600W would be an overkill.

 

[Cerberus]

This gpu has two power 6pin connector
Each 6 pin can carry max 150w mean 12.5ampere
And the psu it was used on has 20+ ampere
Either that was psu or card is a culprit

Sent from my HTC Explorer A310e using Tapatalk 2

 

[hamidkhatri]

When u hav checked wid haroon bhai psu, which psu did he have?

Sent from my LG-E720 using Tapatalk 2

 

[murtaza12]

http://www.pakgamers.com/forums/showthread.php?t=150263

Sent from my GT-S5830 using Tapatalk 2

 

[mazkraven]

Sorry for a late reply..
Budget remains under 80 pounds and I'm not going to buy one from here.
They found out that the motherboard's bios was not flashed to the latest version and it even worked with a 600w ^_^ JUST WOW.
So what if I get the XFX one?

- - - Updated - - -

Folks at Club3D and AUTech seems completely and utter n00bs. Have they ever heard about "Power Distribution of v12+ rails"? And yes, XFX PSUs are manufactured by Seasonic. 550W will do, with all the overclocks you can squeeze out of your components on air. Anything more than 600W would be an overkill.

So XFX PSUs are better than Corsair?
Should I get the XFX one or the Corsair TX one

 

[mazkraven]

Try this, will cost you around 10k.
GX-750W - Cooler Master - Leading Provider of Computer Case, Cooler, Power Supply, Laptop Cooling, Gaming Peripherals

Sorry dude. If I buy this 10k = TOTAL WASTE.

- - - Updated - - -

When u hav checked wid haroon bhai psu, which psu did he have?

Sent from my LG-E720 using Tapatalk 2

His psu is Aerocool Strike-X 600W (Single Rail)

 

[mazkraven]

@mazkraven
There is no possible way that an HD7870XT is gonna fail to run on a 900W PSU unless there is a problem with the PSU

Let me elaborate


This is FALSE
Because as per the review (Which is in German so i ran a google translate) the 265W of Power Consumption is for the ENTIRE System

The original HD7870XT as per Techpowerup and Guru3D did not go above 127W under full Gaming Load
Under furmark it showed ~144W

For u system a good 500W PSU like Xigmatek NRP PC502 is more than enough (444W or 37Amps on 12V)
600W in this case is a bit overkill and anything above is simply a waste

I strongly believe there is a problem with the card IF u have checked it on ur CM 500W aswell
despite the fact that CM 500W is not enough, the system would boot and run under that PSU

I don't know bout my CM 500W.
I'm ordering a new one so how about XFX or should I go with Aerocool or Corsair's TX Series?

 

[murtaza12]

I don't know bout my CM 500W.
I'm ordering a new one so how about XFX or should I go with Aerocool or Corsair's TX Series?

Definitely Corsair's TX series.