GOT a graphics card ! :( halp

[djengala]

hi so i know the title is confusing and not very helpfull ... but what ever you're here

so here is the i always had the 9400GT(old school) but today i bought the HD7870 ghz edition

now i dont have a fancy PSU a simple 400 W (cheap one)

 

question time :

iwant to power the graphics card with another PSU (another cheap one ) my question is :is this safe for my graphics card ??

 

and how do i make that molex to 6pin connector

 

and finnaly is this a good card !

 

thanks and have a nice day

[thekeemo]

1. theres an adapter that usually comes with the card

2. its fine

[SImoHayha]

hi so i know the title is confusing and not very helpfull ... but what ever you're here

so here is the i always had the 9400GT(old school) but today i bought the HD7870 ghz edition

now i dont have a fancy PSU a simple 400 W (cheap one)

 

question time :

iwant to power the graphics card with another PSU (another cheap one ) my question is :is this safe for my graphics card ??

 

and how do i make that molex to 6pin connector

 

and finnaly is this a good card !

 

thanks and have a nice day

I think you need a new power supply..........seems rather old but I could be wrong what are your specs ?

[X1XNobleX1X]

Power supplies aren't that expensive, I really recommend getting a brand name 650W (Seasonic, Corsair).

With PSUs like that, they can damage your other components and sometimes cause fires. 

[Jobbe03]

The card is ok. 

 

I wouldn't do any of the things you're asking to do. 

[dadasmithywinkle]

-snip-

 

The card is a decent onw, definitely an upgrade over your last one. In the photos, you already have an apdapter on the card that goes from molex to 6-pin. That GPU will power your card fine, but if you want to power it with another, you're gonna need to short the 24-pin atx connector.

[djengala]

The card is a decent onw, definitely an upgrade over your last one. In the photos, you already have an apdapter on the card that goes from molex to 6-pin. That GPU will power your card fine, but if you want to power it with another, you're gonna need to short the 24-pin atx connector.

it requires 2-(adapters)

 

Power supplies aren't that expensive, I really recommend getting a brand name 650W (Seasonic, Corsair).

With PSUs like that, they can damage your other components and sometimes cause fires. 

sorry to tell but they are IM IN AFRICA !!!!!!!(algeria ) and PC related stuff are expensive

 

I think you need a new power supply..........seems rather old but I could be wrong what are your specs ?

beside the new GPU a DUAL CORE E5700 -3ghz(oc to 4.1ghz)  6gigs ram MB:Gigabyte G41 MT-S2p

[airdeano]

hi so i know the title is confusing and not very helpfull ... but what ever you're here

so here is the i always had the 9400GT(old school) but today i bought the HD7870 ghz edition

 

now i dont have a fancy PSU a simple 400 W (cheap one)

question time :

iwant to power the graphics card with another PSU (another cheap one ) my question is :is this safe for my graphics card ??

 

and how do i make that molex to 6pin connector

 

and finnaly is this a good card !

 

thanks and have a nice day

 

to run the 7870 GHz you need a minimum of 500watts.

 

your PSU says 400watt, but in PC hardware, it really is a 250watt PSU. 22-amps

on the 12-volt rail, times the voltage (12v) is 264watt. what they did was include

all rails to make it look like a bigger PSU than what it really is. first hint of a load

and the system will error/BSOD.

 

 

source: http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=1473&lid=1#

 

[X1XNobleX1X]

 

sorry to tell but they are IM IN AFRICA !!!!!!!(algeria ) and PC related stuff are expensive

 

 

Australia has expensive components as well.

All I was trying to say was, save up and get a better PSU, because buying a cheap PSU could later down the road, destroy your components. 

[djengala]

to run the 7870 GHz you need a minimum of 500watts.

 

your PSU says 400watt, but in PC hardware, it really is a 250watt PSU. 22-amps

on the 12-volt rail, times the voltage (12v) is 264watt. what they did was include

all rails to make it look like a bigger PSU than what it really is. first hint of a load

and the system will error/BSOD.

 

7870 PSU requirment.jpg

 

source: http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=1473&lid=1#

YES i saw that and thank you for your support but what i really asked is can run with a second PSU

 

[djengala]

Australia has expensive components as well.

All I was trying to say was, save up and get a better PSU, because buying a cheap PSU could later down the road, destroy your components. 

oh OK thanks

[daemonowner]

Australia has expensive components as well.

LOL.

 

@airdeano why are you accepting the recommendations from Sapphire's website?

legitreviews found total system power consumption with 7870Ghz and 3960X to be 250W gaming and 290W in Furmark.

Correct me if I'm wrong, but the card has 2 6pins. Should have a 150W TDP.

[airdeano]

LOL.

 

@airdeano why are you accepting the recommendations from Sapphire's website?

legitreviews found total system power consumption with 7870Ghz and 3960X to be 250W gaming and 290W in Furmark.

Correct me if I'm wrong, but the card has 2 6pins. Should have a 150W TDP.

 

because they build them and know what they should be using for power. sapphire

is a GPU board partner which builds AMD GPU exclusively and i'd take their word

over a kill-a-watt test. pitcarn xt is 175TDP.

 

source: http://en.wikipedia.org/wiki/Radeon_HD_7000_Series chipset table.

[djengala]

Hmmm linus is live...

[quan289]

iwant to power the graphics card with another PSU (another cheap one ) my question is :is this safe for my graphics card ??

 

No. It is not recommended. Not only your current PSU is based on a rather archaic design, using a secondary PSU for a +12v power draw can be problematic for certain PSU. Many low-end PSUs require a load between the 12v and the 5/3.3v to be within a certain ratio for it to operate properly. If it is not properly "balance", then you will see a severe voltage drop on the 12v rail and spike on the other rails. This is similar to the whole "Haswell capability" with certain PSUs.

 

You will need to invest in an independent / DC-DC regulated PSU if you want to do this, but for your system with such a modest power draw, you can just avoid the hassle and power it with that one PSU.

_______

 

The "500w" minimum requirement is for the entire system, which Sapphire nor nVidia didn't clarified what sort of components are included in that estimation. Is it a system with an i3? Or a system with a LGA2011 i7? Also, does that factor in a 500w PSU that are rated for continuous or peak?

 

https://forum-en.msi.com/faq/article/printer/power-requirements-for-graphics-cards

A retired forum staff at MSI stated that that the 7870 requires a minimum of 500w as well; however, it also states that it needs to have at least 23A on the 12v rail as well. That's only 276w. Both the Antec Earthwatt Green 380w and Seasonic G 360w has met that amperage rating and higher, in which shows that these manufacturer is also giving some leeway in their recommendation to compensate for the poor, overrated units.

 

http://www.techpowerup.com/reviews/Sapphire/HD_7870_Flex/26.html

In accordance to that link, W1zzard has used a $2000 equipment to isolate the power draw of the Sapphire HD7870 Flex GHz Edition to a max power draw of 150wDC during Furmark. Unless you are running some odd build with two OCed CPUs or something, a good 400w PSU would be plenty (yours is not a good 400w unit). I would suggest getting a new single PSU like the Corsair CX430v3 if you need something inexpensive. But to give you any sort of recommendation, it would be helpful to know your budget and links to stores you are able to buy from.

[djengala]

Wow thanks alot quan289