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6870 vs 6850 for a460 CM psu!!

Last response: in Graphics & Displays
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February 20, 2012 11:58:43 PM

hello Guys!!!
i asked this question before,,,,,i have been told here that's gonna work
but lots of other people told me it's NOT gonna work!!!

i just built a new pc!!
CPU:AMD FX6100 (BULLDOZER)
RAM:G.SKILL RIPJAWS 8GB(2X4GB 1600)
MOBO:GIGABYTE 880(VERY BASIC MOBO
HDD:500 OLD WD + 320 OLD WD(i have no idea about the RPM)

but i have made a BIG Mistake!!!
i bought cooler master elite 311plus with a 460 standard PSU,,,i thought it's enough for this graphic card!!!
BUT,,,,,i found out that it's 70% efficient only,,,,so i dunno if it's gonna work or not!!!
i will not over clock anything,,,,,i will even get the sapphire stock version!!!
so i wanted to know if this 460W STANDARD PSU will be enought for the sapphire 6870 or even if there's another version that uses less power i could get it!!!
or should i just go for the 6850!!!!

THANKS IN ADVANCE

p.s: i live in Egypt so it's kinda different in prices (usually more expensive!!!)

More about : 6870 6850 a460 psu

February 21, 2012 1:12:47 AM

what is the amperage on the 12v rail?
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February 21, 2012 2:44:15 AM

what do you mean??
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February 21, 2012 3:45:24 AM

The Cooler Master Elite Power 400W and Elite Power 460W are exactly the same power supply with a different label (and price tag).

It is simply unbelievable that Cooler Master rips people off in this manner.

Even though the label on the Elite Power 460W shows two +12V rails it really has only a single rail rated at 27 Amps.

For a system using a single Radeon HD 6870 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 30 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

For a system using a single Radeon HD 6850 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 25 Amps or greater and have at least one 6-pin PCI Express supplementary power connector.

The Cooler Master Elite Power 460W (None PFC: RS-460-PSAR-J3 / Passive PFC: RS-460-PSAP-J3), with its combined +12 Volt continuous current rating of 27 Amps and with its one 6-pin PCI Express supplementary power connector, is only sufficient to power a system with a single Radeon HD 6850.
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