SLI working

[ingsoc84]

Originally Posted by 335th_GRAthos

I have 1100W

I do not have the consumption ratingsat hand but this information "that the tests done were only with the gpu at idle, and not full" is incorrect.

Most GPU tests I have seen provided information on power consumption at idle, middle and full usage so you should be able to find the numbers you need.

Somebody raised the same question like you in this forum:
http://www.tomshardware.com/forum/31...er-consumption

Anyway, this will solve all your questions:
eXtreme Power Supply Calculator Lite v2.5
http://www.extreme.outervision.com/p...ulatorlite.jsp




I think you will probably not. For the low resolution you have, at the current state of the game (beta patch) I would hold on my money and wait for the next generation of NV cards.




~S~

Thanks for the info and help. yes, I was also thinking just to wait, I'm trying to see whats new on the lineup for the future, Im sure something is....only problem is, when something is the newest, its very expensive, and when the new gen's come out, the 570's will drop fairly quickly I imagine, which would make having two of the cheaper Im thinking..but, one never knows. thanks!

[335th_GRAthos]

Wise decision!

Out of personal experience (I have been building my own rig for the last 25years, last 6years SLI configurations), the cycle of graphics cards is about 1,5years. Every 1,5years the new GPU has twice the performance for the same price.
It thus makes it impractical to buy a second GPU even if it is cheaper, because the performance will not be there (compared to the GPU cards available at that time).

Especially for this game it will be the case: The game requires 2,1Gb of VRAM and higher and much faster GPU performance than currently available in the market. My prediction ids that the next (or over-next) GPUs will show a 50% increase in performance with this particular game and these will be the graphics cards we want to have!

My 2cents only, I do not work for ATI or NVIDIA nor do I sell hardware so, everybody does what he thinks best.

~S~

[ingsoc84]

Understand completely. As for sli, I've heard that two cards does not essentially give you twice the vram of the sinle card,..so is it the case that one card opertaing at 2.1vram or higher will always be better fps than say two 570's?
How are your frame rates with the two 570? I run original textures, grass off..forests low, buildings low, land shades low, fps is improving with these adjustments, but I'd like to see them consistenly 50=60....another question, would I get much of a benefit from increasing my cpu from say 3.3 to 3.5, or is the gpu really the key here?

Thanks again for your help, makes the choices easier to hear from someone who has been building for years, I've been at it for about 10 years, I've always thought one beefy card is better than two cards in sli, probably should have got the 580, wanted the 590, just too pricey, and I was hearing of bugs with it. The game obviously is still in its teething period as far as bugs, enhancements and improvements, so probably best to wait till the tree has been fully shaken and everything falls into place, which is probably at least 6 months down the road if not more like 9. SH5 was pretty bad untill the issues were all worked out, and when the modders got ahold of the stable game, it really shined at that point, and is awesome, if you like subsims


thanks again!

[335th_GRAthos]

Originally Posted by ingsoc84

I've heard that two cards does not essentially give you twice the vram of the sinle card,

Correct, I have two GTX570 cards, but my VRAM is 1,3Gb (only).

Originally Posted by ingsoc84

..so is it the case that one card opertaing at 2.1vram or higher will always be better fps than say two 570's?

Yes under conditions: if insufficient VRAM is the bottleneck then, the card with more VRAM will perform better.
Which is the bottleneck in the case of CoD (among other things...)
My point is that today, the GTX580 with 3Gb VRAM is the card to buy (and not the smaller version with 1,5Gb "only").
My personal opinion posted many times is that even the GTX580 is not good enough for the game and we have to wait for two generations of GPUs to see real performance...

Originally Posted by ingsoc84

How are your frame rates with the two 570? I run original textures, grass off..forests low, buildings low, land shades low, fps is improving with these adjustments, but I'd like to see them consistenly 50=60....another question, would I get much of a benefit from increasing my cpu from say 3.3 to 3.5, or is the gpu really the key here?

Screenshots with fps, with/without SLI, GPU1 & GPU2 %utilisation look at page1

From what I have read in various forums it seems that higher CPU speed helps, never saw hard evidence though. Personal opinion, if you know how to and it is easy, you should do it (within reason). I increased my i7 from 2.9GHz to 3.6GHz it probably made a little difference.

Looking at your HDD model and the available RAM you have, I would recommend you invest your time on something else:

Originally Posted by 335th_GRAthos

Without RAMDRIVE, sound was there, no problems at all.
HOWEVER I noticed significant difference in performance: I got some 0,5sec stutters, happened at the most critical moment every time, dogfighting, mostly when a Bf109 was coming from high above at high speed and I turned my head to the sky to track it. I presume it is the speed that the system needs to load the textures of the new object.

So definitively I will stick to my RAMDRIVE (especialy since I have a slow (normal) hard disk and no SSD).
Personally, after this experience, I consider the money to add another 6Gb RAM (and make RAMDRIVE) better invested than money to spent on an SSD.
I will post it at the RAMDRIVE thread, too.

~S~

[Cataplasma]

Originally Posted by 335th_GRAthos

My personal opinion posted many times is that even the GTX580 is not good enough for the game and we have to wait for two generations of GPUs to see real performance...

My personal opinion is that a GTX580 is good enough to launch a rocket in space.
Technologies are useless without a proper employment, people have to learn now how to do better things using at best what is in their possession.
I design for industries and this thirst for new technologies makes me laugh...but maybe I should cry.
Using a 3Gb gc to play COD is like put a rocket engine on a kite

[335th_GRAthos]

LOL!
I must admit your comments are not out of place! I still have one 5.1/4 floppy disk with Turbo-Pascal on it...and wonder why new SW comes in 5-7Gb packages.


Despite that my comment stays: "even the GTX580 is not good enough for the game" (this game)

The graphics are an overkill? Surely (I hope you have seen Tuckie's YouTube Video in high definition (340Mb), it shows how much detail has been put inside).
The graphics are badly programmed? Possibly (I am not an expert)

But I am not unhappy neither with my SLI nor with my frame rates.

And remain hopeful for the near future.

~S~

[ingsoc84]

I had no idea there was a gtx570 with 3.0 gigs vram, ar you sure? do you know where I can find it? It seems this would more than likely play the game quite well...at least Im hoping...thx

How about this card??


Video / Graphics Cards > PCI Express 2.0 > 1GB or more
ZOTAC ZT-50103-10P GeForce GTX 580 Video Card - 3GB, GDDR5, PCI-Express 2.0 (x16), 2x Dual-Link DVI, Mini-HDMI 1.4a, DirectX 11, Dual-Slot, SLI Ready

[335th_GRAthos]

Who said there is a GTX570 with 3Gb VRAM, there is not.

The only card with 3Gb VRAM to my knowledge is the GTX580 version.

This is definitively the card to have for the time being!
(because as I mentioned in previous posts, I believe we have to wait for two generations of GPUs to come in order to see real performance with this game).

You can see the performance of this card thanks to Tuckie's great work (download the high quality video but be careful, the 1080 quality is 340Mb )
FPS test video on switching from GTX275 to GTX580

http://www.youtube.com/watch?v=Fgqr41HA8YA

~S~

[ingsoc84]

Do we know if that is a 3gig 580 or 1.5? Thanks for the comparison..seeing that my current set up knocks every game I have out of the field..even those with direct 11, the logical and best choice I now think absolutely is to wait for the next or second gen card..as you mentioned..no need spending a lot now JUST to get smooth fps on this one game...when given time..a newer generation card will handle CoD well..AND new games as well...buying the 580 would be just throwing money away at the moment..to play one game..and would be obsolete two years down the road for the newer offerings which I believe will take more and more advantage of direct x 11. 20-30 fps with this 580 does not seem to be worth it...IF he is playing with 1.5 ram..but..either way..thing to do is wait..which is hard for me and most gamers.
Thanks again

reading th posted commetns on that vid..its the 1.5 card.

[335th_GRAthos]

Just tested RickRuski's recommended setups and installed the new NV drivers.
The SLI setup is much smoother now!

RickRuski
--------------------------------------------------------------------------------

Although I have only recently gone Sli I feel that I have found some things that help to get it running reasonably well.

(1) make SURE that all settings are the same in all adjustments (control panel, Invidia Inspector, etc) sometimes I have found that they aren't.

(2) Try and get all cards balanced so that voltages, frequencies, etc are the same. ( I use EVGA precision Tool for this purpose available at EVGA , my two cards are from different stables and therefore not the same clocks etc.)

(3) Overclocking sometimes has a negative effect (although my cards are factory O/C I have turned them down to stock settings and find them more stable)

Hope these few things that I have found during testing help others who might be struggling.

Here are my new "Profile" settings applied after 285.27 beta driver.

Sli compatibility bits (DX10) 0x00000011
Sli compatibility bits 0x00000011
AA-mode override any application setting
AA-setting 2x (2x Multisampling)
AA-Transparency Multisampling Enabled
AA-Transparency Supersampling Off/ Multisampling
Text filtering-Anisotropic sample opt. OFF
Text filtering-Negative LOD Bias Clamp
Text filtering-Quality Quality
Text filtering-Trilinear opt. OFF
Max pre-rendered frames 3
Multi-display/mixed-GPUacceleration Single display performance mode
Power management mode Adaptive
Treaded optimization Auto
Triple buffering OFF
Vertical Sync Force on

Sli : -

AA-SliAA AA MODE SELECTOR SLIAA ENABLED
Number of GPU's to use Sli SLI_GPU_COUNT_TWO
NVIDIA predefined No.GPU's SLI_PREDEFINED_GPU_COUNT_DX10_TWO
NVIDIA predefined No. GPU's SLI_PREDEFINED_GPU_COUNT_TWO
NVIDIApredefined SLI mode DX10 SLI_PREDEFINED_MODE_DX10_FORCE_AFR
NVIDIA predefined Sli mode SLI_PREDEFINED_MOED_FORCE_AFR
SLI rendering mode SLI_RENDERING_MODE_FORCE_AFR

Other : -

Do not display this profile in the C/P CPL_HIDDEN_PROFILE_DISABLED
Enable application for Optimus 0x00000011 (Il-2 Sturmovik: Cliffs of Dover)

Now have smooth play after cards reach operating temps.
Get EVGA "Precision" tool to show fps and card temps, also to balance frequencies and voltages. These will display on screen instead of using "Fraps".


RickRuski

~S~