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Can 650w Power 2x Radeon 6850

Last response: in Graphics & Displays
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a b U Graphics card
May 10, 2012 6:57:52 AM

Sure. No sweat!
The 6850 demand is not too high. It only needs 1xPCIe 6PIN power. On the other hand the PSU you linked have 2. So the 2x6850 fits right into it. Do you already have the 2x6850 or are you still looking?
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May 10, 2012 7:02:26 AM

i dont have the gpus yet, plan on buying 1 and that psu in a few months for my birth day and buying the second one at a later date
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a b U Graphics card
May 10, 2012 7:14:09 AM

The crossfire of 6850 is good recommendation if you already have invested in a 6850 sometime ago & want to upgrade with a 2nd one. But if you are still on the planning stage, 6850 in Cross Fire is not ideal because there are newer single cards that will meet your need. As you will see in some of posts about 6850, there are disputes about it susceptibility to micro stuttering which, while I believe is not show stopper, is reasonable to avoid in your case. It is better to invest in better card for more reasons ( like upgrade path, newer generation, etc ).
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May 10, 2012 7:23:40 AM

see the thing is i got a certain limit on my gpu cuz of my specs and motherboard layout, it cant be any longer then 8.25inchs cuz then the card will be ontop of my sata connectors and i wont be able to use my disk drive or hdd, if you can find a card equal or greater then the 6850 for the same price or less as well as 8.25" or less then i welcome your input. i should also point out im running on a dual core cpu that came with my pc so i dont wnana bottle neck realy bad untill i can buy the rest of my new pc parts like a new mobo and 6 core cpu.
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a b U Graphics card
May 10, 2012 7:26:57 AM

What is your motherboard, your PC case & your current GPU?
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May 10, 2012 7:34:54 AM

Stock Emachines 1331 et the gpu is integrated, the case is the default case for that model and the mobo i thinks called Ht2000 my entire pc is stock plan to buy psu and gpu, and once i have money a new mobo,ram,case, and cpu.
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a b U Graphics card
May 10, 2012 8:20:50 AM

A PC case is not too expensive. It is better to free your self up from the stock case & plan your GPU without size restriction. Otherwise, your current choice of GPU will not be optimum in the long run... how much budget do you have for your birthday expense?
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a c 84 U Graphics card
May 10, 2012 8:41:34 AM

dont think of going with hd 6850 cf it will be better if u go with single high end cards like hd 7850 which will be more then enough for you and will clear up your needs of gaming.:) 
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a b U Graphics card
May 10, 2012 8:46:21 AM

you can use 7770 CF get more power saving.
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May 10, 2012 9:43:15 AM

my case isnt the problem for the card length the card goes over top of my hdd and disk drive sata connectors rendering them unusable, my budgets around 250$ after i buy a 650w psu for 80$ and a 150$ gpu i wont have enuf for the case i want the Thermaltake Chaser i plan to buy it at a later date, and as far as getting the 7850 sunnk if i buy that i wont have money for the psu to power it.
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a c 84 U Graphics card
May 10, 2012 9:52:30 AM

Jynxin said:
my case isnt the problem for the card length the card goes over top of my hdd and disk drive sata connectors rendering them unusable, my budgets around 250$ after i buy a 650w psu for 80$ and a 150$ gpu i wont have enuf for the case i want the Thermaltake Chaser i plan to buy it at a later date, and as far as getting the 7850 sunnk if i buy that i wont have money for the psu to power it.



oh sorry you didnt written your budget there thats why i have given that gpu.:) 

did you alredy have 1 hd 6850 already or not?
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May 10, 2012 9:56:20 AM

its fine i was looking at that card but with my budget and cpu i wouldent be able to get a psu and i would bottleneck big time.

Nope currently have integrated, normally i only use my pc for web browsing and videos, im mainly a console gamer but i wanna get into pc gaming more and i tried various F2P games i cant even run them on all low setting without the game being completly unplayable so i figure id start with a card that would atleast let me run med-high settings i mainly want it for Guild Wars 2
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a c 84 U Graphics card
May 10, 2012 10:00:15 AM

what is your max budget?

what is your whole pc specs?

tell me so i can help you in more better way
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May 10, 2012 10:11:00 AM

do you think ill be able to play most games on atleast med setting with that gpu?
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a c 84 U Graphics card
May 10, 2012 10:20:04 AM

yes you can play with med settings with that gpu.:) 
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a b U Graphics card
May 10, 2012 10:21:25 AM

Jynxin said:
my case isnt the problem for the card length the card goes over top of my hdd and disk drive sata connectors rendering them unusable, my budgets around 250$ after i buy a 650w psu for 80$ and a 150$ gpu i wont have enuf for the case i want the Thermaltake Chaser i plan to buy it at a later date, and as far as getting the 7850 sunnk if i buy that i wont have money for the psu to power it.

Given your motherboard and budget constraints, I think the 6850+650W PSU is a sound plan. You got a good upgrade path with the 650W PSU and the 6850 have very good price/performance ratio although the MSI you selected has a price premium on it compared to other 6850's because of the cyclone cooler. Here is a cheaper option:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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May 10, 2012 10:30:26 AM

Im confused now cuz suunks saying ill bottleneck bigtime with a 6850 and random kid says its a good choice, im completely lost.
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a c 84 U Graphics card
May 10, 2012 10:33:08 AM

randomkid said:
Given your motherboard and budget constraints, I think the 6850+650W PSU is a sound plan. You got a good upgrade path with the 650W PSU and the 6850 have very good price/performance ratio although the MSI you selected has a price premium on it compared to other 6850's because of the cyclone cooler. Here is a cheaper option:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


do you think that cpu will work greatly without any bottleneck with that card?
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a c 84 U Graphics card
May 10, 2012 10:38:36 AM

Jynxin said:
Im confused now cuz suunks saying ill bottleneck bigtime with a 6850 and random kid says its a good choice, im completely lost.


yes it will bottleneckreally i m not telling you lie even in hd 6850 cf the amd athlon ii x4 will bottleneck:( 
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a b U Graphics card
May 10, 2012 2:27:09 PM

sunnk said:
do you think that cpu will work greatly without any bottleneck with that card?

People always talk about bottleneck but it is really a vague idea. Here is my attempt at clarification:
Unless you have a perfect GPU & CPU match, you will always have a bottleneck. How big time you can tolerate is what matters.
For example, the AMD X2 255 will cap at around 45-60fps in 3 games measured at Anand. Unfortunately, they are old games so can not make a direct comparison for games today.
http://www.anandtech.com/bench/Product/121?vs=188&i=2.5...
On the other hand, a single 6850 play games at 24 to 75fps depending on the game.
http://www.anandtech.com/bench/Product/291?vs=302&i=188...
So will the AMD X2 255 bottleneck a single 6850? I don't think so... But will Crossfire bottleneck it? The benches shows it will.
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a b U Graphics card
May 10, 2012 2:30:45 PM

Jynxin said:
Im confused now cuz suunks saying ill bottleneck bigtime with a 6850 and random kid says its a good choice, im completely lost.

I think 6850(not the cyclone)+650W is better choice performance wise and in as much as it fits your original budget. A decent PSU wattage also removes any constraint for the possibility of GPU upgrade in the future if you select a low wattage PSU today.
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a b U Graphics card
May 10, 2012 2:46:24 PM

I was running xfire 6850s on a cheap 600 watt for a long time
my .02
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a c 84 U Graphics card
May 11, 2012 8:22:55 AM

randomkid said:
People always talk about bottleneck but it is really a vague idea. Here is my attempt at clarification:
Unless you have a perfect GPU & CPU match, you will always have a bottleneck. How big time you can tolerate is what matters.
For example, the AMD X2 255 will cap at around 45-60fps in 3 games measured at Anand. Unfortunately, they are old games so can not make a direct comparison for games today.
http://www.anandtech.com/bench/Product/121?vs=188&i=2.5...
On the other hand, a single 6850 play games at 24 to 75fps depending on the game.
http://www.anandtech.com/bench/Product/291?vs=302&i=188...
So will the AMD X2 255 bottleneck a single 6850? I don't think so... But will Crossfire bottleneck it? The benches shows it will.



yes i also asked you that only the cf hd 6850 will bottleneck by that chip.

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a c 84 U Graphics card
May 11, 2012 8:26:22 AM

@op let me tell you in better way your cpu is weak but not very weak its good enough to power an hd 6770 without any bottleneck but when it comes to hd 6850 single only it will bottlenck a bit when you will play high cpu dependent games like skyrim and some others which uses cpu more then gpu. overclocking may fix that problem.:) 

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