MSI 980 Gaming 4G, the EVGA GTX 980 Classified ACX 2.0, or the ASUS Strix GTX 980

shunkaNL · Nov 23, 2014

Hi. I just got a new pc and im planning to replace my current sapphire radeon hd 7850 2gb with a gtx 980. But i can't decide between these manufacturer: MSI 980 Gaming 4G, the EVGA GTX 980 Classified ACX 2.0, or the ASUS Strix GTX 980.

My current build:
Cpu: i7 4770K
Mobo: asus b85m-g
Ram: 8gb
500w power supply
Graphics card: sapphire radeon hd 7850 2gb

Sorry for my english

Ps: im not sure about overclocking yet

envy14tpe · Nov 23, 2014

500W is cutting it too close with a 980 and a 4770k. It is very close to a no go. I'd get the Asus 980 and a new PSU.

GRUxTSAR · Nov 23, 2014

Get the EVGA Classy if you're going to watercool. The Classified cards are pretty much made to be watercooled and overclocked to heck

Otherwise, get the MSI

GRUxTSAR · Nov 23, 2014

envy14tpe :

Meh. Nvidia recommends 500w, and those recommendations are usually more than you actually need. Though I'll agree that 500w is cutting it pretty close, especially if OP is going to OC. But I doubt it's anything to really worry about if he won't

OP if you're going to OC, get 600w

shunkaNL · Nov 23, 2014

Now i come to think of it i dont think i wil overclock it. But i do have the k version of the i7 4770 becouse i wanted to overclock that. Would that be a problem with 500w?

GRUxTSAR · Nov 23, 2014

shunkaNL :

Would it be a problem? Probably not
Would it be cutting it VERY close? Yes

To be completely honest, I'd get some more wattage. Your PSU won't have any problems now, but you'd probably want to upgrade it sooner or later

shunkaNL · Nov 23, 2014

Wel, i've decided to go for the asus gtx 980, and later overclock my cpu after i brought a new psu. Thank you guys for helping me out.

GRUxTSAR · Nov 23, 2014

shunkaNL :

Anytime!

fkr · Nov 23, 2014

we should really find out what type of power supply it is first. if it is a high quality seasonic of xfx it should be fine. we need to also know how many amps on the 12v rail.

shunkaNL · Nov 23, 2014

Its a corsair cx500m. Do you think 750w wil be enough becouse i might buy 750w then

GRUxTSAR · Nov 23, 2014

shunkaNL :

If it's a CX500 you should replace it very soon. The CX series are very unreliable. 750W is more than enough

envy14tpe · Nov 23, 2014

750W is, in my opinion, the perfect wattage for those that might go 1440p or 144Hz in the future. 750W would allow you to 980 SLI. If you are ever interested and PSUs can last a long time assuming you don't go cheap like a Corsair CX. oops. but no, 750W is perfect.

fkr · Nov 23, 2014

750 is way overkill. i ran CF 7950's and an i5 2500k @4.8 with no issues on a 750w and all of my components use way more power than yours

your GPU will only use 200w

http://www.techpowerup.com/reviews/ASUS/GTX_980_STRIX_OC/23.html

your CPU will only use 115

http://www.anandtech.com/show/7003/the-haswell-review-intel-core-i74770k-i54560k-tested/2

even if you overclock everything and your CPU uses 150w and your GPU goes all the way to 300 watts you are still perfectly fine with your current power supply

if you really want to get a power supply this is one of the best if not the best on the market right now and it is a really good price

EVGA SuperNOVA 750 G2: johhny guru gives it a 9.8/10, almost no power supplies get that rating
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438017

keep in mind even if your CPU were to use 175w and your gpu were to use 300w this would mean that you would have to be doing something where you CPU was maxed on all cores and your GPU was completely maxed at all time just to hit these peaks of power usage. this never happens. however the PS I recommended is phenomenal and has a 10 year warranty so it is good to go for a long time.

rakoja · Nov 23, 2014

Overclocking the CPU to 150W and overclocking the GPU to 300W will force the psu down. I bet the psu has a 80+ bronze certificate, that means that under load it will just have about 400W available. 200GPU, 115CPU and the rest will fit just for some hdds and external peripherals.

Besides, there is a maximum of 408W available on the 12V rail, since it just has 34 Amperes.

Nevertheless, your choice with the SuperNOVA 750 G2 is an excellent choice.

fkr · Nov 23, 2014

rakoja :

this is all wrong. a 500 watt power supply will produce 500 watts no matter what the power efficiency rating is. if it is 80% efficient that just means that it will convert 80% off the electricity from the wall to DC power. in other words it will have to draw 600 watts from the wall to make that 500 watts for your system.

amps * volts = watts

38amps * 12 v rail = 456 watts that it will make for your GPU

your current power supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139050

+3.3V@25A, +5V@20A, +12V@38A, -12V@0.8A, +5VSB@3A

rakoja · Nov 23, 2014

fkr :

Thank you for correcting, didn't knew that.

http://www.corsair.com/en/builder-series-cx500 that's what i found for his power supply (not sure weather he has the modular or the non modular version).

But doesn't the CPU also uses the 12V rail? From what I'm guessing there, he has 408 (34AMPs * 12V) for CPU and GPU

fkr · Nov 23, 2014

http://www.tomshardware.com/reviews/power-supply-specifications-atx-reference,3061-2.html

The above link should help.

He said he is using the cx500m a couple of posts up. This would give 460 watts just through the 12v rail

fkr · Nov 23, 2014

The main plug for the motherboard has all three voltage channels on it and last I checked a CPU can pull from a range of voltages and should be able to pull wattage off of the 5v rail also. I really have not investigated much since Intel put so much voltage regulation on the soc.

MSI 980 Gaming 4G, the EVGA GTX 980 Classified ACX 2.0, or the ASUS Strix GTX 980

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