i5-750 with GTX 760 SLI?

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ekseli

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Jun 25, 2013
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I'm debating myself between a single GTX 770 and dual GTX 760s. The latter would be better value in the long term and offer much more performance, but the rest of my system is quite old and I can't be bothered the hassle of an upgrade. So the choice comes down to whether the rest of my system can handle the 760 in SLI or not.

My cpu is i5-750 overclocked to 3.8~3.4 GHz (on Turbo, so highest clocks depending on the # of cores used). From what I've read it's enough for a GTX 770, but will it bottleneck GTX 760 SLI?

Second, my motherboard is Asus P7P55D-E Pro. As far as I know it only supports SLI in PCI-e 8x/8x mode. How much is that going to limit the performance of dual 760s?
 
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Sn1992-1361850

Sn1992-1361850

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Jul 13, 2013
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get 2 gtx 760 would be best for u
u ll be surprised to see the performance u ll get from this 760 sli
look at this
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And yes it would bottleneck but still give better perfrmance than the gtx770
U can upgrade later to remove any bottleneckin
 
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ekseli

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Yes, I know the performance of the 760 in SLI. The question is how much of that performance will be lost due to my CPU and only 8x/8x PCI-e.

Will the i5-750 bottleneck the SLI 760s bad enough that the difference to a single GTX 770 becomes insignificant?
 
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theonerm2

theonerm2

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What kind of monitor do you have? If you just game at 1080P then 1 GTX 760 is enough. If you game at a higher resolution you want a card with minimum 3GB vRAM. So sli GTX 760 4GB would work best for 2560x1440P or higher. It's awesome considering the price to performance ratio. I'll say it again... 1080P just 1 760 is enough. Higher resolutions go sli 760 with 4GB vRAM.

And as far as the Core i5 750 issue goes... It's still a decent CPU. You'll be fine with it and considering that you want massive GPU power I'm guessing your games will be largely GPU bound anyway. There's little need to worry about it. You won't notice what few FPS you'll be missing out on.
 
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ekseli

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I'm gaming on single 1900x1200 screen or 1080p TV. I know GTX 770 is plenty to run most games on full details on that resolution for quite some time, but 760 4GB SLI would last longer. The 760 SLI would also be attractive in that I could buy one card now and a second one after Maxwell launches, thus getting it somewhat cheaper than it is now.

I have a 650W Corsair 80+ cert. PSU which is sufficient for the SLI. The whole system on 760 SLI should draw no more than ~380W under peak load. However that might make the PSU fan speed up too much to keep it quiet, so I might have to change the PSU anyway.
 
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Raheel Hasan

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http://www.legitreviews.com/article/2224/13/

760 sli system will draw around 520 watt.

If u have tx 650 (53amp on 12 v) then u r fine as 760 sli require 50 amp on 12v rail
 
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ekseli

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Those are measurements of power drawn from the wall socket. At 80% efficiency that's no more than 420W actually drawn by the system components. The CPU they used in the test system has a TDP of 130W while the i5-750 has a TDP of 95W. Hence my system is likely to draw no more than 380W from the PSU. Quite likely less than that, since my CPU is probably not overclocked as heavily as the CPU they used in the test.

Yes, my PSU is Corsair TX650W. I'm confident it is sufficient to run 760 SLI with my CPU. The only question is how loud the fan will get at that 380W load.
 
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theonerm2

theonerm2

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The thing about sli'ing these cards at that resolution is this... By the time you actually need that much power you're likely to be able to find another single card that could replace the two for less than half the price. But still.. I know it's nice to have more than you need. It feels good knowing you can game on those for years to come.. But when you start seeing cards that are cheap and can out perform the two of yours you're going to want to upgrade anyway. The urge will be there. It happens every 2 or 3 years.
 
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ekseli

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That would basically mean that a single card released 2 years from now should have significantly more performance than GTX Titan. Let's test that hypothesis.

GTX 590 (the Titan of its day) was released in spring 2011. Is there a single card half its price that can outperform it? The GTX 770 qualifies for its speed, but costs at least $400. The GTX 760 costs just $250 and also outperforms the GTX 590, but not by a wide margin. So, which GTX 500 series SLI configuration would today perform at least on par with GTX 760, preferably GTX 770, and cost half its price?

GTX 560 Ti SLI is quite close to GTX 590. Meanwhile, GTX 760 is roughly on par with GTX 590, so a bit faster than GTX 560 Ti SLI. So the only thing left to check is whether GTX 760 now costs half of what two GTX 560 Ti's would have cost back in the day.

GTX 760 today costs around $250. Turns out the GTX 560 Ti also launched at that price, making GTX 760 a half-price offering compared to a 560 Ti SLI. Thus concluding our hypothesis verification:

You, sir, were right.

You might have the next Moore's Law developing in there somewhere. ;)
 
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theonerm2

theonerm2

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Actually the GTX 590 is a dual GPU card and it can't be compared to the titan for that reason. Nvidia's titan of the time was the GTX 580. It was their fastest single GPU card and it launched at $499.99. The following year the GTX 660 was released for only $230. It is a faster card and costs less than half of what the GTX 580 cost in 2011. Then the GTX 760 was released and it's even better for only half the price of a GTX 580. I guess either way you look at it I'm right.
 
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ekseli

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Although, in my case the comparison is between 770 and 760 SLI. So whether or not there will be a card with 760 SLI performance for half its price in 2 years is quite irrelevant, because I doubt I could upgrade from 770 to that with just $100. The upgrade from 770 to 760 SLI is just a $100 today, but I would think that at the point when the 770 starts to show its age the 760 SLI would still have plenty of life in it.

Of course in my system it's going (?) to be bottlenecked somewhat from its full potential, but given that the price difference to 770 is 25%, it only has to be ~30% faster to beat the 770 in value.
 
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warhammer68m

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Always the same debate over and over again when someone wants SLI in his system.

If you always wait for the next gen card to make a choice, you'll end up having purchased nothing, and still when the next gen cards are out, you will still have good SLI config for a good price. Go with the SLI 760 now, it performs better than 1 780, even on par with a single Titan, and will last you a long time before you need to change. Plus it looks cool in a system.

And yes, even at 1080p, one GTX760 is not always enough for Ultra settings. It may average fairly high FPS, but in the long run there is some situations (Need for Speed most wated 2013, Tomb Raider) there will be huge drop in FPS, below the 30 FPS mark. GTX760 in SLI will crush any game, end of story.

Buying a 780 costs more money, and doesn't give you more performance, and you will still need to upgrade, to get more, thus paying huge amounts of money over time, for the exact same thing as middle-range SLI setup. You will still upgrade your SLI setup overtime, but it will always cost you less money. By the time a single cheaply priced card comes out and performs slightly better, the games will also require more GPU power. Same old story again. You'll be fine with GTX760 SLI for a long time.

Another good point is that it could end up that nVidia blows the next gen, resulting in them performing poorly, and by the same time they discontinue their current gen, and you end up having to buy nothing worthy.
 
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