Gigabyte GeForce GTX 780 Ti GHz Edition- 3 Way SLI Wattage?

El Pelican · Sep 9, 2014

Hi there,

How much wattage would require if you use 3 of these cards in a 3-way SLI configuration?

http://www.pccasegear.com/index.php?main_page=product_info&cPath=193_1577&products_id=26525

The Psu I have got is the Corsair 1200i,would that be enough?

Also, will be using the new X99 socket, DDR4 and the Intel 5930k.

Some reviews for this GPU indicates that uses around 440 watts while running funmark, but while while running games, goes around 350+ watts.

Thanks for your help

Alpha3031 · Sep 9, 2014

Is there any reason you would want this vastly overkill computer? What will you be using?

El Pelican · Sep 9, 2014

Alpha3031 :

Because I have not got any mobo or cpu at the moment, so I have decided to move the the X99 chipset because it will make sure any future proofing and I'm not planning to upgrade for at least 3 years.

Getting back to the main question, I reckon that if I go ahead with this configuration, I might be using around 1100 wattage from the psu, however I want to be sure that the 1200i will be able to cope with 3 gigabyte ghz 780ti edition on a 3 way sli.

Alpha3031 · Sep 9, 2014

You would not need that overkill build for that. Get a i7 4790K, a R9 290 or 2 and you're set.

El Pelican · Sep 9, 2014

Alpha3031 :

DDR3 and 1150 sockets it's going to be replaced with the DDR4 and the 2011-3 socket, why should I wait tp upgrade if I can do it now?

Once again, I am just asking about the wattage, not why should or should not upgrade to DDR4.

indy17 · Sep 9, 2014

I would seriously get a 1.5 Gw one. You dont want to be greedy on the PSU. It will keep your system alive.

Read this, calculate how much Wattage you`re using and figure out the PSU you need.
http://www.pcworld.com/article/2025425/how-to-pick-the-best-pc-power-supply.html

indy

TheNaitsyrk · Sep 11, 2014

Buying DDR4 and the newest CPU is pointless. Games will never use more than 2 (maybe 3, but not likely) cores and 4790K's got 4Ghz and 4.4Ghz with boost. Overclock it to 4.6Ghz and you're good to go. You will not need more than that, and it will easily be enough for 3 years or more. Wait until prices drop and then upgrade. Upgrading now is extremely pointless.

When it comes to RAM, the difference is small and DDR3's (with at least 2400 performance) will do nicely.

Alpha3031 · Sep 11, 2014

El Pelican :

Actually, no. 2011-3 is Haswell E, meaning Enthusiast. If you want to game, the E and EP chips are not needed, and if you want to wait till the upgrade, that's Broadwell, next year

Alpha3031 · Sep 11, 2014

In other words, Super expensive, and zero performance gains.

sora · Sep 11, 2014

I think two-way SLI is fine but three-way is kind of overkill.

leeb2013 · Sep 11, 2014

TheNaitsyrk :

I had to look twice at your message, I thought it was 2008 or something.

Are you seriously recommending a dual core CPU for gaming? Almost all AAA games run better on 4 cores now and many utilise 8 cores.

OP:

DDR4 is pointless now, but in 3 years, it might be a bit more mainstream.

Unless you are running 2 or 3 4k monitors, 3xGTX780 SLI is an over kill and $2500. In 3 years time, you might be thinking; "I paid $2500 for these GPUs, they consume 1000W, I've never used their full performance and now I can buy a single $500 GPU which outperforms them and uses a third of the power"

James Mason · Sep 11, 2014

You'd be happier spending around $900 now on a computer and then $900 again in 3 years, than spending 2.5k now and losing to a $900 computer in 3 years.

TheNaitsyrk · Sep 12, 2014

leeb2013 :

I only said that games will not use more than 2 or 3 cores of your CPU when you're playing, I never said that he should buy dual core. Dual core is an old technology. Buying 4790K would be a wise thing to do now and is's amazing and not as expensive, it will easily be enough for 3-4 years.

ko888 · Sep 12, 2014

For a system using three GeForce GTX 780 Ti graphics cards in 3-way SLI mode NVIDIA specifies a minimum of a 1200 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 92 Amps or greater and that has at least three 75 Watt 6-pin and three 150 Watt 8-pin PCI Express supplementary power connectors. (Minimum system power requirement based on a PC configured with an Intel Core i7 3.2GHz 130 Watt TDP processor.)

Corsair AX1200i (CP-9020008-NA)
• OEM: Flextronics
• maximum combined +12 Volt continuous current rating of 100.4 Amps
• six (6+2)-pin PCI Express supplementary power connectors
• Full Modular Output Cables: Yes
• Official Intel Haswell Compliance: Yes
• 80 PLUS PLATINUM Efficiency Certification
• 7 Year Limited Warranty

legend001523 · Sep 12, 2014

Don't buy the ghz editions, they are unstable under oc and just general use, search it on google

get asus dcII

TheNaitsyrk · Sep 14, 2014

I agree withy legend001523, I'm happily running 2x ZOTAC 780 TI in sli and I got stable overclock (1200Mhz), after that just black screens I suppose. GIGABYTE's GHZ EDITION cards are having stability issues due to high factory overclock. A LOT of people had problem with it.

Dark Lord of Tech · Sep 14, 2014

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA SuperNOVA 1300 G2 1300W 80+ Gold Certified Fully-Modular ATX Power Supply ($169.99 @ Amazon)
Total: $169.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-09-14 12:48 EDT-0400

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