OCZ500MXSP Good enough for an ASUS 770 GTX?

[Hazuki1988]

Hi there I have been stalking Graphics cards for the past few months. And I was literally just about to click on a Asus 770 GTX (with Watch Dogs free) when I thought it would be a good idea to check the recommended Power

My PSU has the correct Connectors for it but I will let you guys decide.

My Machine Spec at the moment:

i5 2500k 3.30Ghz Unlocked Sandy Bridge
Asus P8Z68-V LX Intel Z68 Chip set
Coolermaster Elite 335U RC 335U Midi Tower
500W OCZ ModXStream Pro
Corsair Blue 8GB (2 x 4GB)
Freezer 13 CPU Cooler
OCZ 60GB Agility SSD
2TB 7200rpm Barracuda HDD
Sata PCI card
Asus 560 Ti

I was going to be pushing out the boat getting the 770 I was hoping I didn't need to upgrade PSU..

Hopefully you guys can help

Thank you.

 

[Hazuki1988]

I done that Watt Calculator and it says that it would take up 426W with all my components.

HELP!

 

[Karadjgne]

If you had a quality psu, Seasonic, Antec, XFX, etc, you'd still require a 550w psu. Anything less quality wise (tier3) and you'd be better off with a 600w psu. It's not so much the actual size of the psu as much as output. Tier 1+2 550 will output @530w, a tier3 unit 460w+.

Gtx 770 has 6pin (75w) + 8pin (150w) + PCIe (75w), so a tier3 is gonna leave 160+w for the restif the system. Not good enough.

You can get tier1+2 550+w PSU's for less than $100

 

[Hazuki1988]

Thank you for your answer I think I may have seen some good ones on amazon that I may be interested in.

 

[Karadjgne]

PCPartPicker.com is good for evaluating prices and has a good selection if reputable vendors. It's possible you may even catch a sale, discounts etc that amazon currently doesn't have. Saving $10-$40 is always a bonus.

 

[esco_sid]

It will be fine i run gtx 670 on a cheap 500 watt psu only replace it if it gives you any problems.

 

[Karadjgne]

gtx 670 requires 30A on 12v rail and 500w min, gtx 770 requires 42A on 12v rail and 600w min. Those are general rules applicable to a broad band of psu's. Quality psu's however have a much better output than the junk. A quality 550w will have @520+ watt 12v output, the garbage psu's usually run anywhere from 430w to 470w. That's why the recommendations run so high. you can power an OC PC with a gtx770 off a quality psu like XFX or Seasonic 550w all day long. I wouldn't try it on a Sentey 550 though.

 

[esco_sid]

gtx 670 requires 30A on 12v rail and 500w min, gtx 770 requires 42A on 12v rail and 600w min. Those are general rules applicable to a broad band of psu's. Quality psu's however have a much better output than the junk. A quality 550w will have @520+ watt 12v output, the garbage psu's usually run anywhere from 430w to 470w. That's why the recommendations run so high. you can power an OC PC with a gtx770 off a quality psu like XFX or Seasonic 550w all day long. I wouldn't try it on a Sentey 550 though.

i wont give it 100% but the one he has would run it just fine its just "recommended" to have 600 watts his PSU by no means bad junk one. WHy spend the money $ before trying to run it like i said i have a bad total junk $35 PSu that runs gtx 670 and bunch of other stuff no problems

 

[Karadjgne]

A 670 equates to a gtx 760 roughly in both power constraints and performance. A gtx 770 is a whole different beast. Requiring a system with 12 more amps on the rail, and moves up from 225w (75 PCIe, 150 2x 6-pin) to 300w (75 PCIe, 75 6-pin, 150 8-pin). If your average system uses 200w (low estimate) with upto 300w with a gtx 770, total system power under max load is 500w. The Corsair CX is 38 amps, 456w, OP's 500w MXSP is only 2x 18amps (30 combined) at 432watts. That's nowhere near the required 42amps 600watts needed for a gtx 770.

Hope that answers the question. Upgraded psu is a must. Antec 620 HCG M, XFX 550 black, Seasonic M12 II either 620 or 650.

 

[esco_sid]

A 670 equates to a gtx 760 roughly in both power constraints and performance. A gtx 770 is a whole different beast. Requiring a system with 12 more amps on the rail, and moves up from 225w (75 PCIe, 150 2x 6-pin) to 300w (75 PCIe, 75 6-pin, 150 8-pin). If your average system uses 200w (low estimate) with upto 300w with a gtx 770, total system power under max load is 500w. The Corsair CX is 38 amps, 456w, OP's 500w MXSP is only 2x 18amps (30 combined) at 432watts. That's nowhere near the required 42amps 600watts needed for a gtx 770.

Hope that answers the question. Upgraded psu is a must. Antec 620 HCG M, XFX 550 black, Seasonic M12 II either 620 or 650.

read this http://www.guru3d.com/articles_pages/msi_geforce_gtx_770_gaming_review,5.html and you will see that that average gtx 770 will draw 200 watts max at the most and they "recommend" 550 watt psu which is with leftover power total system draw is 303 watts with overclocked x58 board then look at this for gtx 670 http://www.anandtech.com/show/5818/nvidia-geforce-gtx-670-review-feat-evga/17 and you will see total power draw under full load is 317 just because something has 8 pin connector with 6 does not mean it will draw all that power i run gtx 670 wich actually uses more power at full load than a gtx 770 with 36amp 500 total watt rated power supply that is made by rocketfish just fine(that is a lot cheaper than his btw) it is borderline but it will run it.

for amps look at it this way gtx 770 has max TDP of 230 watts 36 amps x12 volts = 432 watts and the 230 is just what nvidia says if you look at what i linked it will more than likely be around 200 so my recommendation is to try to run it and only if it gives you any problems get a new PSU why waste money on something you might not need before testing it ?

Here is chart of his system( or very similar) required power and every single part will not run in a system at 100% load nor actually use full rated power like 230 watts says on gtx 770 its more likely around 200

Intel Core i5-2500K 3.3GHz Quad-Core Processor 11W - 95W
Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler 5W - 10W
Asus P8Z68-V LX ATX LGA1155 Motherboard 17W - 70W
Corsair Vengeance 8GB (2 x 4GB) DDR3-1866 Memory 9W - 9W
Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive 4W - 20W
A-Data Premier Pro SP600 64GB 2.5" Solid State Drive 1W - 5W
Asus GeForce GTX 770 2GB DirectCU II Video Card 57W - 230W
Total: 104W - 439W

Also i found an article here http://www.tomshardware.com/reviews/build-your-own-budget-gaming-pc,3780.html
they run gtx 770 on 450 watt PSU for the PC builder marathon

 

[Karadjgne]

You make no mention of the 15 or so watts his system fans will use, it the PCI card, so total before any OC which could feasibly add close to another 100 or so watts, is at least 454 watts, overthe 100% output of the ocz 432, and that 432 was tested at brand new. Capacitors degrade over time, and around 1-2 years you can expect up to a 10% loss in power transition. So right now that 432watts is a lot closer to 400. Also, the tested results were taken at 30 C, jack the heat up to @35 C, very small increase, and you can expect another 5% or so drop in rated output. So basically, OP is looking at around 370-380 watts output total on the 2x 12v rails, which still falls way short of any possibility of running a gtx 770 for anything more than internet surfing. Turn on BF4 and he's gonna black screen in 3 minutes or less.

 

[BlankInsanity]

You can put his whole system at risk by using a GTX 770 on a 500W PSU, a short-circuit could occur or anything, or have a major shutdown. If I were him I wouldn't risk it, get a proper 650-700W PSU just to be safe.

I have a HX750, it has 80 Plus gold rating. This is overkill for my setup but it ensures maximum reliability because my PSU isn't being strained out

 

[esco_sid]

You make no mention of the 15 or so watts his system fans will use, it the PCI card, so total before any OC which could feasibly add close to another 100 or so watts, is at least 454 watts, overthe 100% output of the ocz 432, and that 432 was tested at brand new. Capacitors degrade over time, and around 1-2 years you can expect up to a 10% loss in power transition. So right now that 432watts is a lot closer to 400. Also, the tested results were taken at 30 C, jack the heat up to @35 C, very small increase, and you can expect another 5% or so drop in rated output. So basically, OP is looking at around 370-380 watts output total on the 2x 12v rails, which still falls way short of any possibility of running a gtx 770 for anything more than internet surfing. Turn on BF4 and he's gonna black screen in 3 minutes or less.

Well like i said before i run the 500 watt cheap psu with 4 140 mm fans, 1 120 pwm fan 2 hdds 4 sticks of ram gtx 670, ssd, pci-e sound card for 2 years now no problem bf4 or any other game oh and my cpu is overclocked to 4.4 ghz but whatever i guess its up to him what he does.