Will my power supply power a R9 295x2?

[Dominates]

Hello. I recently purchased a EVGA 750w psu found here : http://m.newegg.com/Product/index?i...ction-_-na-_-na-_-na&AID=10446076&PID=3938566 And I was wondering if it could power a 295x2. I really wanna pick up the gpu because it's very cheap right now. Let me know. Thank you

 

[[Ion]]

Yeah, you'll be fine. The EVGA PSUs are very good, and 750W is lots of power. Unless the rest of your system is crazy (dual-CPU or something) you should have no difficulties.

 

[fullinfusion]

I'd say not, 750 is on the weak side.. It'll work but I'd guess issues will arise quite soon after that kind of load your demanding from the PSU.

Why stress the shit outa a 750 watt PSU? Hook up a wattage meter and tell me how much it draws. My 290x and 290 pull over 800 watts easy at times and much higher when clocked up.

Good thing evga have a great warranty in place.

 

[nunomoreira10]

the card alone will push 500w, which leaves 250w for the rest, while it should work its a bit pushy to use continuously 90% of your psu capacity.
on the other hand evga is of good quality, and their psus are know to take up the full load, so i would use it without worry, just dont overclock very much the card

 

[Dominates]

Well the thing is my cpu is a 4790k. If I get the 295x2 I won't ever be overclocking. And pcpartpicker says my wattage should be under 700

 

[bubbleawsome]

Still, 100w extra is nice. Get the EVGA 850w. It's like $20 more.

 

[Dominates]

Also on the amd website it needs up to 28 amps on the 12v rail. I have no idea what this is

 

[nunomoreira10]

I'd say not, 750 is on the weak side.. It'll work but I'd guess issues will arise quite soon after that kind of load your demanding from the PSU.

Why stress the shit outa a 750 watt PSU? Hook up a wattage meter and tell me how much it draws. My 290x and 290 pull over 800 watts easy at times and much higher when clocked up.

Good thing evga have a great warranty in place.

thats from the wall, a psu rated for 750w with a 90% eficiency will pull from the wall 750/0.9=833w, tho that 800 watts still seem a little high

 

[Dominates]

I already bought my psu

 

[[Ion]]

the card alone will push 500w, which leaves 250w for the rest, while it should work its a bit pushy to use continuously 90% of your psu capacity.
on the other hand evga is of good quality, and their psus are know to take up the full load, so i would use it without worry, just dont overclock very much the card

But that's the thing--he won't be using it continuously. Unless he's gaming 24/7, the 295X2 doesn't use anywhere near 500W most of the time. Normal power usage (DC) should be 200W at the very most, and if it's 600W+ when he's gaming every now and then, it's not an issue.

 

[nunomoreira10]

But that's the thing--he won't be using it continuously. Unless he's gaming 24/7, the 295X2 doesn't use anywhere near 500W most of the time. Normal power usage (DC) should be 200W at the very most, and if it's 600W+ when he's gaming every now and then, it's not an issue.

The continuous part was for the gaming lol, averege power, yeah he should be alright.

 

[newtekie1]

But that's the thing--he won't be using it continuously. Unless he's gaming 24/7, the 295X2 doesn't use anywhere near 500W most of the time. Normal power usage (DC) should be 200W at the very most, and if it's 600W+ when he's gaming every now and then, it's not an issue.

With the rest of his system it most definitely could be an issue. I'm inclined to believe the 295 could hit 600w during gaming, if it can hit 650w with furmark. You load up a game that really stresses the card with vsync off and I believe it could hit 600w. That only leave 132w for the rest of his system, that just isn't enough. His 4790K can pull, even at stock, 100w when boosting.

I'd fear that under load the computer would hit the OCP limiter on the PSU and shut down. It won't be doing any damage, but it wouldn't be fun to be in the middle of a game and have the whole system shutdown. The absolute minimum I'd consider running a 295 on would be a 850w PSU.

 

[the54thvoid]

The card requires 50 amps over both 8 pin connectors. Additionally, each pin requires to supply 28 amps. AMD's own blurb recommends over 1000watt PSU's to run this card.
Given the known exceptional requirements of this awesome card, a 750 watt PSU is not recommended.

 

[Sasqui]

I asked the same question about XFire 2x 290x's and it was a resounding "no" with a Corsair HX750

 

[EarthDog]

Sheeple...people....

I am running a 295x2 and an overclocked 4930K with this EXACT PSU people. It works just fine. Hell, I overclocked both the CPU to its limit (4.6Ghz) and the cards to their limit with additional voltage and I managed to to pull a PEAK of around 830W at the wall ( x .90 = 747W).

Normal gaming (BF4) with the 295x2 at stock I peaked around 600W at the wall IIRC.

So while the headroom may be too tight for some people, its juuuuust fine, even with moderate overclocks.

 

[newtekie1]

Oh yeah, and after looking at the manual and specs for the power supply the OP bought. There is no way it will work.

The EVGA 750w G1 unit that the OP bought is divided into 4 12v virtual rails, each has an OCP maximum of 20A. The VGA connectors run of 12v2 and 12v4, so only 2 of the rails are available for GPU power. That is only 480w. So you are either going to end up pulling an assload of power through the 24-Pin(which is bad) or the OCP will end up shutting the system down.

I am running a 295x2 and an overclocked 4930K with this EXACT PSU people. It works just fine.

Not the exact same PSU. You've got the G2, which uses a single 12v rail, he bought the G1 which uses a split 12v rail with OCP protection limiting current to 20A. In situations like this, it makes a massive difference.

Furthurmore, your G2 can provide 748w on the 12v rail, which is why it doesn't trigger the protection when you are pulling 747w. The OP's G1 can only provide 732w on the 12v rail, so even if it was a single rail design, it would still trigger the protection and kick off.

 

[EarthDog]

G1? Shoot... good catch... I have the G2...

Are we sure about his PSU? The link goes to newegg, not to a PSU....how do you know he has a G1?

 

[newtekie1]

G1? Shoot... good catch... I have the G2...

Are we sure about his PSU? The link goes to newegg, not to a PSU....how do you know he has a G1?

His link does contain the item number. The item number in his link is for the G1.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817438027

 

[Dominates]

A lot of mixed responses. I just hope it will work without shutting down. I can try geting a good wattage motherboard if that will help. I just want the most fps in my games as possible haha

 

[ThE_MaD_ShOt]

You could be taking a chance on the whole rig.

 

[Schmuckley]

A lot of mixed responses. I just hope it will work without shutting down. I can try geting a good wattage motherboard if that will help. I just want the most fps in my games as possible haha

Take a picture of the side of your PSU,pls.
If it's split into 4 rails,you probably won't even boot.

 

[Dominates]

Ehh I guess I won't take the risk then. I'll just go with a 980 and overclock the crap out of it

 

[EarthDog]

Not the exact same PSU. You've got the G2, which uses a single 12v rail, he bought the G1 which uses a split 12v rail with OCP protection limiting current to 20A. In situations like this, it makes a massive difference.

Furthurmore, your G2 can provide 748w on the 12v rail, which is why it doesn't trigger the protection when you are pulling 747w. The OP's G1 can only provide 732w on the 12v rail, so even if it was a single rail design, it would still trigger the protection and kick off.

This post is spot on... I thoguht he had the G2 like me...

/thread.

 

[fullinfusion]

Fans, hard drives

A lot of mixed responses. I just hope it will work without shutting down. I can try geting a good wattage motherboard if that will help. I just want the most fps in my games as possible haha

Yea you bet some good responses. Your 4790k a good low volt one? Mine at stock is able to run at 1.040v and at 4.6ghz 1.185v

If you don't over clock the CPU you can always undervolt it to its lowest stable voltage for even less power the system needs

 

[Solaris17]

A lot of mixed responses. I just hope it will work without shutting down. I can try geting a good wattage motherboard if that will help. I just want the most fps in my games as possible haha

lot of mixed responses? what thread are you reading? I see alot of NOPE