PSU for a 780 ti high spec build?

nVidia says 600 for the system and 1st card + 250 for the 2nd

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-780-ti/specifications


http://www.guru3d.com/articles_pages/msi_geforce_gtx_780_ti_gaming_review,7.html

Here is Guru3D's power supply recommendation:

GeForce GTX 780 Ti - On your average system the card requires you to have a 550 Watt power supply unit.
GeForce GTX 780 Ti 2-way SLI - On your average system the cards require you to have a 800 Watt power supply unit as minimum.
GeForce GTX 780 Ti 3-way SLI - On your average system the cards require you to have a 1200 Watt power supply unit as minimum.

If you are going to overclock your GPU or processor, then we do recommend you purchase something with some more stamina.

Click to expand...

Given the minimal price differences, I just about always select PSUs for SLI addition in future


Great PSUs - In order of preference.... I'd put the EVGA and Corsair HX on equal footing behind the Seasonic but gotta like the price on the SuperNova, so that moves it up into 2nd place

$138 Seasonic X-850 - http://www.newegg.com/Product/Product.aspx?Item=N82E1681715110
£143.82http://www.scan.co.uk/products/850w-seasonic-x-series-full-modular-80-plus-gold-1x120mm-fan-atx-psu

$115 EVGA SuperNova 850 - http://www.newegg.com/Product/Product.aspx?Item=N82E16817438018

$150 Corsair HX850 - http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011


Near Great PSU
$119 Seasonic M12 850 http://www.newegg.com/Product/Product.aspx?Item=N82E16817151108
£89.40 - http://www.scan.co.uk/products/850w-seasonic-evo-full-modular-80-plus-bronze-1x120mm-fan-atx-psu

Of course in UK, your pricing will vary.....always have a hard time with UIK partpicker not listing things that I find available in UK stores so listed what I could fins.

Look over at jonnyguru.com ..... Seasonic X series (1250 model tested) gets 10.0 performance rating and 10.0 build quality rating .... HX gets 10.0 and 9.5 respectively on the 850 (the HX 1050 and 1000 are dogs) as does the EVGA Super Nova

10.0 / 10.0 - http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=309
10.0 / 9.5 - http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=299
10.0 / 9.5 - http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=377

750 WATTS IS MORE THAN ENOUGH for a single card setup.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=380
Review from jonnyguru 9.8 out of 10

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply (£81.39 @ Amazon UK)
Total: £81.39
Prices include shipping, taxes, and discounts when available


For future SLI if you plan on it.

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA SuperNOVA 1000G2 1000W 80+ Gold Certified Fully-Modular ATX Power Supply (£138.12 @ Scan.co.uk)
Total: £138.12
Prices include shipping, taxes, and discounts when available

Corsair RM is what I would call their 2nd Tier line....suitable for all but the most serious overclocking. Where's I'd give their HX and AX a 10.0, I give the RM and TX V2 a 9.5 ..... also comparable to XFX Core Edition

Things to consider before pulling the trigger ....

1. The H100i is extremely loud ....I am talking vacuum cleaner running next to your desk loud. The H100 OTOH is comparable to one of the better air coolers. Listen here .... at 55% CPU loud, I gotta leave the room :

http://martinsliquidlab.org/2013/03/12/swiftech-h220-vs-corsair-h100i-noise-testing/

Again ukpartpicker doesnt list the H110 but it is available in UK
http://www.scan.co.uk/products/corsair-h110-hydro-series-cpu-cooler-lga-115x-1366-and-2011-and-am2-am3-fm1-and-fm2

The H100i is 2=61 dBA, ..... the H110 37 dba .... so H100i is about 6 times as loud.

2. I am little nervous about the gaming 5 (and 7 / 9 for that matter) and wondering if it has some "birthing problems" as its a new line. Saw something similar with the first G45s and G65s with the killer network card .... took a month or 2 to straighten out. But user reviews with problems have some commonality so, if not all newbie issues, I wonder how long they will take to straighten out

But using the compare function on newegg, the G45 and Gaming 5 cards are $2 apart and they are an exact feature for feature match top to bottom other than

G45 - 1 x mSATA 6Gb/s
Gaming 5 - 1 x M.2

So the more mature product line may have a benefit as it's already long past it's early days and the Z87 version did win over 40 awards. Kinda a six of one half a dozen of the other thing but worth thinking about.

3. Install 2 x 8GB not 4 x 4 GB ....

a) matched sets are guaranteed to work together, two sets are not.
b) 4 modules puts a larger strain on CPUs memory controller.
c) You have a greater likelihood of having to reduce OCs, timings or both to get stability with 4 modules as compared to 2

4. While I really like the Classified, the EVGA SC card is simply overshadowed by the MSI.

a) If you ahve a problem, with an MSI mobo, you avoid the common tactic taught in 1st day of tech Support 101 .... blame the other hardware vendor. With both MoBo and GFX from same vendor, that issue goes away.

b) The MSI is simply the better card....it got 2nd highest rating ever by techpowerup.

9.9 Rating - MSI 780 Ti - http://www.techpowerup.com/reviews/MSI/GTX_780_Ti_Gaming/29.html
9.5 Rating - EVGA 780 Ti - http://www.techpowerup.com/reviews/EVGA/GTX_780_Ti_SC_ACX_Cooler/31.html

Hi - The RM750 is positioned as an "enthusiast" level (step up from budget) PSU. However, it uses
budget level caps in the secondary filtering stage. It is inconsistent with components in a high spec build.

There are several models already linked above by the other posters that are consistent with other high spec components. The RM series altho having nothing technically wrong just don't qualify given their use
of budget level caps.

The evga we linked is a newer version.

That's the one they are talking about in that thread yes.

Hi again - two questions; Do you plan on SLI in the future? and what is your max budget for a PSU?
If you have no intention of SLI down the road, then your choices become a lot greater.

This looks like a good choice to me.

1000w for SLI.

Check the Seasonic in my original post....better than the RM, and only 84 pounds




The Seasonic M12 850 will do great on SLI.... NVidia site says 850 watts..... Guru3D says 800 watts, more if OC'ing

In Guru3Ds test, the 780 Ti pulled 262 Watts .... the 780 pulled 231 Watts ... so that's a 30 watt difference....nut there CPU pulls 230 watts whereas your only 130 so they are 100 watts high.

I have twin 780s overclocked 25+% running Furmark @ 110% TDP at the moment and it's maxing out at 740 watts being pulled from the wall.. .... That's not estimated or calculated but real, hard measured, metered numbers.

With the X-1250 Gold PSU, at that load it's about 89% efficient... so it can easily be calculated then that my PSU is putting out only 659 watts. Now add 2 x 30 watts for the 780 Ti instead of my 780s and you are at 720 watts.

Let's not forget that I have twin water pumps each capable of pulling 23 watts, so let's subtract just 10 watts for each of them and we come up with a PSU with twin 780 Ti's needing to put out just 700 watts. And don't forget that on air, you won't be able to get these kind of overclocks on either CPU or GPUs..... That 850 then gives you plenty of headroom for anything you might be doing.

http://www.guru3d.com/articles_pages/msi_geforce_gtx_780_ti_gaming_review,7.html

Measured power consumption single GeForce GTX 780 Ti

System in IDLE = 121W
System Wattage with GPU in FULL Stress = 375W
Difference (GPU load) = 254W
Add average IDLE wattage ~10W
Subjective obtained GPU power consumption = ~ 264 Watts

Click to expand...

System Power of 375 watts with 264 watts added on for 3nd card = 639 watts and again, that's "at the wall". ....568 or so DC Output under full GFX load...... but that doesn't stress your CPU so add 100 watts assuming you were running overclocked CPU (4.6GHz - 1.4 volts) CPU stress test at same time as GPU stress test and add the maximum allowable TDP of 110% extra power for GFX OC (53 watts for 2 cards) and you hit 721 .... pretty darn close to my measured numbers.

Hi - I would go with Blackbird on this, realhardtechx suggests 950 for 780ti SLI. Yes, they
build in headroom. And yes, a good quality 850 would run it, but I would opt for more power in
this situation than "enough" power. So, if you're going to SLI 780ti's then go with the 1kw.

Or, upgrade your PSU when you do get the 2nd 780ti.

I think that the 850watt should run sli fine,so imo take that one for the few pounds more.
This is about which cpu is used too,the one you choose doesn't use as much as the socket 2011 cpu's (highly overclocked) that most review sites use.
Somewhere in this topic before someone mentioned a review by guru3d which uses this one in that review,
"Core i7 3960 Extreme (Sandy Bridge-E) @ 4.6 GHz"
this uses a lot more than the 4790K you are going to use.