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Polaris RX 480 / RX 470 / RX 460 Discussion Thread - Page 75  

post #741 of 991
Quote:
Originally Posted by zdziseq View Post

Wrong! MSI has the same phases as ref. Look closer for PCB. Free places is for two more phases so PCB is ready for 6+2 (not like 4+2 as ref.)
Phases for mem and vref is on the left side chip.


MSI is 4 + 1 + 1 (GPU, VDDCI, VDDR) as said before. The reference is 6 + 1 + 1.
post #742 of 991
SFC chokes...meh

Amd just put an 8pin to your pcb, fix the power delivery and slap a custom cooler and you have the best custom card
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post #743 of 991
Quote:
Originally Posted by sugarhell View Post

Amd just put an 8pin to your pcb, fix the power delivery and slap a custom cooler and you have the best custom card

+1 smile.gif .
Quote:
I did a horrible thing.

Link = blinksmiley.gifstun.giffrown.gif
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post #744 of 991
Quote:
Originally Posted by sugarhell View Post

SFC chokes...meh

Amd just put an 8pin to your pcb, fix the power delivery and slap a custom cooler and you have the best custom card
yea, that would be a killer product for its price. Still not sure why amd have not gone with 8 pin from start. rolleyes.gif
post #745 of 991
Quote:
Originally Posted by prznar1 View Post

yea, that would be a killer product for its price.

+1 smile.gif .
Quote:
Originally Posted by prznar1 View Post

Still not sure why amd have not gone with 8 pin from start. rolleyes.gif

The answer is marketing, 6 pin shows we have power efficiency so no need for 8 pin ....
Edited by gupsterg - 7/18/16 at 5:46am
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post #746 of 991
Quote:
Originally Posted by gupsterg View Post

+1 smile.gif .
The answer is marketing, 6 pin shows we have power efficiency so no need for 8 pin ....
but they could also say that its for safety when overclocking. kookoo.gif
post #747 of 991
Probably for marketing and oem deals. Most OEMs want to use psus with 6-pin only to cut the cost.
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post #748 of 991
I havent seen a psu with only 6 pin for a two years now. Guess ill never understand marketing and oems.
post #749 of 991
Quote:
Originally Posted by prznar1 View Post

Guess ill never understand marketing

Me neither.

Putting aside say cost of 6 pin vs 8pin for say manufacture of PCB or OEM for building rigs.

Look at the custom MSI RX 480, clearly space for 2 more phases, they are probably still using IR3567B which supports extra phases without needing doublers, etc. How much more must it add costing to the PCB? I would think not a lot, seems kookoo.gif to me.

Due to demand/supply (perhaps a little price inflating), a few etailers in the UK are charging a bit more than what they were at launch of RX 480 ref PCB.
Edited by gupsterg - 7/18/16 at 8:09am
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post #750 of 991
Quote:
Originally Posted by prznar1 View Post

So tell me, why in each motherboard review simpler vrm was always the one with lower powerdraw?

Because there are less phases, less overall current and thus power. On top of that there are bios limitations in place to stay within the rated spec depending on how a mobo manf. builds their vrm; theyre not going to intentionally design their vrm to explode or melt.

It's better put this way. If you have one card with 4 phases rated up to 40a each, and a card with 6 phases at 40a per phase, and draw a total of 120a on both cards, the card with more phases will have less current draw per phase. Thus less heat per each phase resulting in cooler temps which allows for heigher efficiency. It's a fairly simple concept.
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