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Does anybody use 2x Nvidia 560's in SLI?

Last response: in Graphics & Displays
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May 29, 2011 10:13:25 PM

Hello I am tempted to buy another Nvidia 560ti. I would like a consistent 40fps+ on games like Crysis/Crysis 2 maxed out @ 2560x1440 (currently get ~20-30fps)

My current GPU:

Gigabyte GTX 560Ti OC 1GB - http://www.ebuyer.com/product/253958

on ebuyer:

Gigabyte GTX 560 OC Edition 1GB - http://www.ebuyer.com/product/267865 @ £154

This is extremely tempting since I was sitting on the fence @ ~£200! Although, this model is not the "overclocked" edition I currently own which runs at 900mhz instead of 830mhz.

SLI benchmark:

http://www.guru3d.com/article/geforce-gtx-560-ti-sli-re...

Crysis (2560x1600):
Single - 30fps
SLI - 54fps

I didn't expect to see anywhere near double performance using SLI.

Questions:

1) I use Q6600/4gb DDR2 - will this bottleneck me in most games?
2) What issues will I face if I bought the slower clocked gigabyte 560? Is it a good deal?
3) Does anybody use two 560's in SLI?


More about : nvidia 560 sli

a b U Graphics card
May 29, 2011 10:21:57 PM

Crysis is one of the few games that, short of a dual gpu card, pretty much needs an SLI/Xfire rig to run, especially at your chosen res...

Increasing from 30 to 54 fps is an 80% increase....
May 29, 2011 10:34:22 PM

mdd1963 said:
Crysis is one of the few games that, short of a dual gpu card, pretty much needs an SLI/Xfire rig to run, especially at your chosen res...

Increasing from 30 to 54 fps is an 80% increase....


opps thanks, fixed haha. Also, Shogun 2, The Witcher 2, GTA IV are more examples of games which push a single 560ti a little at 2560x1440. Though I am not sure how much these games rely on CPU performance (for one thing I don't imagine SLI would make a significant difference in GTA)
Related resources
a c 199 U Graphics card
a b Î Nvidia
May 29, 2011 10:42:53 PM

Whoa, just a minute...you have a GTX560Ti, and the card you're considering is a plain GTX560. I'm not sure how well they will work together, if at all. You need another GTX560Ti.
Also, what PSU do you have? Use a PSU calculator to be sure it is strong enough. It looks like 600W should be enough, but 650W-700W would likely be safer.
May 29, 2011 11:00:52 PM

I just built my current PC and it has 2 x MSI GTX 560Ti Twin Frozr.

http://imageshack.us/f/171/interior2p.jpg/

(i5 2500k, 8GB of G.Skills Ripjaws X RAM)

I play at 1080p. I am very happy with the performance. I play Crysis at 1080p, 2x AA, V-Sync enabled, and everything on Very High. It is VERY smooth. I would call it what is referred to as, "buttery smooth", ha.

So, yeah, if you add another GTX 560Ti, you should notice a huge difference.
a c 561 U Graphics card
a c 86 Î Nvidia
May 29, 2011 11:12:57 PM

jtt283 is correct. You cannot pair a GeForce GTX 560 Ti GPU with a GeForce GTX 560 GPU in SLI mode.

For a system running with two GeForce GTX 560 Ti cards in 2-way SLI mode requires a minimum of a 650 Watt or greater power supply unit with a minimum combined +12 Volt rail(s) current rating of 45 Amps or greater. Meeting the +12 Volt current requirements rating is more important than meeting the power supply's wattage requirements rating.
May 29, 2011 11:13:47 PM

For the money, I would say that the GTX 560 in SLI and the AMD 6950 in Crossfire are both very good choices. My resolution is only 1920x1080, but I've been VERY VERY VERY impressed with my AMD 6950s (I think the GTX 560 are supposed to be very similar in terms of performance). They can run literally every game that I've tried at 60 frames per second maxed out. (Yes, I do mean literally... Even Crysis). I think the 6950s are supposed to be slightly faster, but both are a very good options. I upgraded from sli gtx 260s and am absolutely thrilled with the performance boost that I've gotten. :) 
May 30, 2011 1:20:29 PM

aha I thought I was missing something, I need another 560ti then. THANKS for the crossfire/SLI reviews guys, it seems to be an easy decision :) 

Also I use a 1000W Coolermaster PSU which will handle two cards fine.

Another note,

My motherboard:

Gigabyte GA-EP45-DS3R P45 (Socket 775 ATX)

This one is a few years old (as is my CPU/RAM) and I am not sure if it supports Nvidia SLI. It has two PCI-e slots. If this motherboard cannot support two 560ti's in SLI I will have to get my second when I upgrade the CPU/mobo/RAM (which will likely be after the new AMD CPU's get reviewed)
a c 199 U Graphics card
a b Î Nvidia
May 30, 2011 3:23:50 PM

That board supports Crossfire, but not SLI.
May 30, 2011 4:58:24 PM

that is disappointing. I really feel it is about time to upgrade the entire PC. I've had money set aside to upgrade for a year and I've been holding back because my Q6600 @ 3.0ghz is still doing great. Intel Core i7 2600k seems like a significant upgrade but I am aware that AMD are releasing new CPU's next month and intels new CPU's are going to start arriving next year.
a c 217 U Graphics card
a c 81 Î Nvidia
May 30, 2011 5:01:33 PM

wildpluckings said:
that is disappointing. I really feel it is about time to upgrade the entire PC. I've had money set aside to upgrade for a year and I've been holding back because my Q6600 @ 3.0ghz is still doing great. Intel Core i7 2600k seems like a significant upgrade but I am aware that AMD are releasing new CPU's next month and intels new CPU's are going to start arriving next year.


You might be able to find someone who will buy your 560ti then get two 6950's instead.
a c 561 U Graphics card
a c 86 Î Nvidia
May 30, 2011 5:10:24 PM

Or, if you're adventurous, you can try the SLI patch that is purported to allow you to run SLI on an Intel P45 Express chipset.
May 30, 2011 7:48:59 PM

@bystander good suggestion but I am going to upgrade soon so it wouldn't be worth it

ko888 said:
Or, if you're adventurous, you can try the SLI patch that is purported to allow you to run SLI on an Intel P45 Express chipset.


interesting :D  well I'm not willing to accept stability issues and stuff. However if it just requires some research/patience and technical expertise then I'd be up for it. I'll have look into it!
a c 561 U Graphics card
a c 86 Î Nvidia
May 30, 2011 8:32:12 PM

wildpluckings said:
interesting :D  well I'm not willing to accept stability issues and stuff. However if it just requires some research/patience and technical expertise then I'd be up for it. I'll have look into it!

The SLI Patch just fools the NVIDIA graphics card driver into thinking it has detected a supported motherboard chipset.
May 31, 2011 9:46:55 PM

ko888 said:
The SLI Patch just fools the NVIDIA graphics card driver into thinking it has detected a supported motherboard chipset.


hm so I CAN in fact use two 560ti GPU's with my Gigabyte GA-EP45-DS3R P45? without stability issues and get full performance out of both GPU's?

If this is the case (literally no issues) I'll order a second card without hesitation
a c 561 U Graphics card
a c 86 Î Nvidia
May 31, 2011 10:15:20 PM

wildpluckings said:
hm so I CAN in fact use two 560ti GPU's with my Gigabyte GA-EP45-DS3R P45? without stability issues and get full performance out of both GPU's?

If this is the case (literally no issues) I'll order a second card without hesitation

Check the following for information:

SLI Patch Multi-GPU on ANY motherboard :

http://www.slipatch.com/doc/manual-en.html


http://www.tomshardware.com/forum/295722-33-working-chipsets


Activating NVIDIA SLI on all motherboards, updated detailed HOW-TO:

http://xdevs.com/e107_plugins/content/content.php?content.30
June 1, 2011 9:50:38 PM

thanks for the links after reviewing these I'm not that enthusiastic anymore. No mention of my particular motherboard in the compatibility lists either from what I saw. I guess I will get a second 560ti when I upgrade the rest of my computer - and since that will be in a few weeks/months I'll hopefully be able to pick up the second 560ti for around £150, no point in paying another £180-200 for the second one considering how fast GPU prices usually drop.
!