Dual AMD Radeon R9 295X2 Graphics Cards On A 1000W PSU

[Wahub MinSeo]

SO i have Corsair 1200W power supply is it Safe and work with no problem if i Use
2 AMD R9 295x2 in CrossfireX mode?

 

[Roger Rogers-1382392]

SO i have Corsair 1200W power supply is it Safe and work with no problem if i Use
2 AMD R9 295x2 in CrossfireX mode?

Are you `wagging` us?

If you bought the cards at a shop, the shop could have advised you, if you really wanted to ask?
Many other sites would automatically give the best options for a PSU if you buy two Graphics cards on their site.
Even amazon tells you what people bought with their cards.

Dont forget; you only need the full power of the PSU IF you max out the cards; so unless you are using a triple 3D Screen set-up, I don`t get how you would not know if two of the cards you mentioned would run ok using an unspecific Corsair 1200W PSU.
Note;
The MODEL number would be required; as don`t want to guess if it is Sub-Bronze, Bronze, Silver, Gold or Platinum spec?

But using a crystal ball, it can be presumed it will work fine (remembering that motherboards and such have relatively fail-safe electronics now).

 

[Wahub MinSeo]

So it's work no problem with 1200watt PSU right?
should i Reassured and never worry if i use Quad GPU in this powersupply?

 

[Wahub MinSeo]

SO i have Corsair 1200W power supply is it Safe and work with no problem if i Use
2 AMD R9 295x2 in CrossfireX mode?

Are you `wagging` us?

If you bought the cards at a shop, the shop could have advised you, if you really wanted to ask?
Many other sites would automatically give the best options for a PSU if you buy two Graphics cards on their site.
Even amazon tells you what people bought with their cards.

Dont forget; you only need the full power of the PSU IF you max out the cards; so unless you are using a triple 3D Screen set-up, I don`t get how you would not know if two of the cards you mentioned would run ok using an unspecific Corsair 1200W PSU.
Note;
The MODEL number would be required; as don`t want to guess if it is Sub-Bronze, Bronze, Silver, Gold or Platinum spec?

But using a crystal ball, it can be presumed it will work fine (remembering that motherboards and such have relatively fail-safe electronics now).

Please tell me, am serious, am not joking
So it's work no problem with 1200watt PSU right?
should i Reassured and never worry if i use Quad GPU in this powersupply 1200w?

 

[DaWibbles]

One word: OVERKILL!

 

[DaWibbles]

Pretty much nobody needs this amount of power honestly! you can run every game on ultra with WAY CHEAPER cards!

 

[VincentP]

SO i have Corsair 1200W power supply is it Safe and work with no problem if i Use
2 AMD R9 295x2 in CrossfireX mode?

Are you `wagging` us?

If you bought the cards at a shop, the shop could have advised you, if you really wanted to ask?
Many other sites would automatically give the best options for a PSU if you buy two Graphics cards on their site.
Even amazon tells you what people bought with their cards.

Dont forget; you only need the full power of the PSU IF you max out the cards; so unless you are using a triple 3D Screen set-up, I don`t get how you would not know if two of the cards you mentioned would run ok using an unspecific Corsair 1200W PSU.
Note;
The MODEL number would be required; as don`t want to guess if it is Sub-Bronze, Bronze, Silver, Gold or Platinum spec?

But using a crystal ball, it can be presumed it will work fine (remembering that motherboards and such have relatively fail-safe electronics now).

Please tell me, am serious, am not joking
So it's work no problem with 1200watt PSU right?
should i Reassured and never worry if i use Quad GPU in this powersupply 1200w?

No, it would not be safe to try and run two of these cards on a 1200W power supply.
Two of these cards draw about 1000W at load.
Say you have a 125W CPU and allow 40W for other components.
You would be looking for a power supply rated at 1464W or 122A on the +12V rail.
This is allowing the +12V rail to be loaded at 80% of rated capacity, which is as high as you would want to go.
You would need at least a top quality 1500W power supply, or you could use a second power supply to power the second card.
This should be the type of supply you would look at:
http://www.evga.com/Products/Product.aspx?pn=120-G2-1600-X1

The reviewers measured power usage for each of these cards 427.5W with a gaming workload and 448.5W with a computer workload. It seems this article was mostly written to prove those numbers.
In real world usage the power draw of the card will vary with temperature and work load. The power usage of individual cards will also vary. AMD rates this power draw at 500W.
It was also useful to them for this review to run a power supply close to 100% of rated maximum load and show it didn't fail during the test. In real world usage though the temperature will vary, the components will age and you want the supply to work for years, not just the length of your test.

 

[Roger Rogers-1382392]

I dont know of any game/software that he could max out those cards; unless he was using them non-stop in stereoscopic 3D at 4K resolutions on a triple monitor setup (and he has not mentioned any of that); and even than many people would say a 1200W Platunum PSU is better than a Bronze 1500W supply.

But I give way to your expertise on this.
I only know what I would do.

 

[VincentP]

I dont know of any game/software that he could max out those cards; unless he was using them non-stop in stereoscopic 3D at 4K resolutions on a triple monitor setup (and he has not mentioned any of that); and even than many people would say a 1200W Platunum PSU is better than a Bronze 1500W supply.

But I give way to your expertise on this.
I only know what I would do.

The most likely way I could see someone fully utilizing these cards is for mining.
A 3 monitor setup at 7680 x 1440 would be the sort of setup you would be looking at to make use of these for gaming.
It doesn't really matter though, you have to spec the power supply for the maximum combined draw of components, not average usage.
80 plus platinum is a nice to have, but it actually makes very little difference to power usage.
The level of 80 plus rating is not a good measure of quality. You will find 80 plus bronze rated supplies that are far better quality than some 80 plus gold or platinum rated units.

 

[Roger Rogers-1382392]

I dont know of any game/software that he could max out those cards; unless he was using them non-stop in stereoscopic 3D at 4K resolutions on a triple monitor setup (and he has not mentioned any of that); and even than many people would say a 1200W Platunum PSU is better than a Bronze 1500W supply.

But I give way to your expertise on this.
I only know what I would do.

The most likely way I could see someone fully utilizing these cards is for mining.
A 3 monitor setup at 7680 x 1440 would be the sort of setup you would be looking at to make use of these for gaming.
It doesn't really matter though, you have to spec the power supply for the maximum combined draw of components, not average usage.
80 plus platinum is a nice to have, but it actually makes very little difference to power usage.
The level of 80 plus rating is not a good measure of quality. You will find 80 plus bronze rated supplies that are far better quality than some 80 plus gold or platinum rated units.

Thank you for clairfying that.

I didn`t know that (maybe because I prefer thinking logically [I mean that I fail to understand why any company would spend the money on making a PSU ultra-efficient, and are doing it out of old ropey bits of electronics (where [you confirm] better PSU`s are sometimes of lower efficiency)]).

Its sounds harsh, but companies are really worse than confusing if your point is proportionally true.

So; Highly rated Branded goods it is from now on then.

 

[VincentP]

I dont know of any game/software that he could max out those cards; unless he was using them non-stop in stereoscopic 3D at 4K resolutions on a triple monitor setup (and he has not mentioned any of that); and even than many people would say a 1200W Platunum PSU is better than a Bronze 1500W supply.

But I give way to your expertise on this.
I only know what I would do.

The most likely way I could see someone fully utilizing these cards is for mining.
A 3 monitor setup at 7680 x 1440 would be the sort of setup you would be looking at to make use of these for gaming.
It doesn't really matter though, you have to spec the power supply for the maximum combined draw of components, not average usage.
80 plus platinum is a nice to have, but it actually makes very little difference to power usage.
The level of 80 plus rating is not a good measure of quality. You will find 80 plus bronze rated supplies that are far better quality than some 80 plus gold or platinum rated units.

Thank you for clairfying that.

I didn`t know that (maybe because I prefer thinking logically [I mean that I fail to understand why any company would spend the money on making a PSU ultra-efficient, and are doing it out of old ropey bits of electronics (where [you confirm] better PSU`s are sometimes of lower efficiency)]).

Its sounds harsh, but companies are really worse than confusing if your point is proportionally true.

So; Highly rated Branded goods it is from now on then.

Efficiency numbers are something they can sell.
Quality is something that is harder to put a number on.
A good example is the Corsair RM750 and RM850. They have an 80 plus gold rating but they have used cheap capacitors that bring the quality down similar to the much cheaper CX series.
It is the same as monitors being advertised on unrealistic contrast ratios, arbitrary numbers that they can sell but tell you nothing about the quality of the product.