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[Official] ASUS M2N-SLI and M2N32-SLI Club! - Page 993

post #9921 of 12359
Quote:
Originally Posted by SavageNorseman View Post

Hey you guys,
So there you have it, I spent a bit of time researching the issue and it looks like the idea of running newer cards in SLI on this old board of ours is a sound one. Anyone like me looking to attempt it should find what they need in those resources... Also one additional page about the PCI-E bandwidth:
http://www.techpowerup.com/reviews/NVIDIA/GTX_480_PCI-Express_Scaling/1.html
This one is about PCI-E bandwidth tests with a 480 graphics card again.
Are there any members here still running the M2N series board with two modern cards in SLI? Especially users of the M2N SLI Deluxe because this board only has a total of 16x PCI-E 1.1 bandwidth not 32 lanes total like the M2N32 board.

I myself haven't spent much time yet looking forward, so this little blurb was timely for me. But I have seen some folks point out that even the PCI-E 1.x interface we're using is not a bottleneck for performance. Does the study say in your opinion (or anyone else that has experience in this) that two GTX 460s for example can achieve higher throughput in a newer board like the Sabertooth or the CHV?
post #9922 of 12359
@ gr8sho

This about sums it up,

"Even with all the data that GTX 480 SLI is pushing across the PCIe bus, x4/x4 is NOT a bottleneck in a single display setup at 2560x1600 with AA enabled.
Therefore, if you are on an aging PCIe 1.X system at x8/x8 mode (equivalent to PCIe 2.0 x4/x4) on a single display fear not, you are not holding back the performance of GTX 480 SLI"

So to answer your question,no you won't get higher throughput with a newer MB,if the card/s are not useing all the bandwidth of pci-e 1 x16(pci-e 2 x8)then pci-e 2 x16 will have unused bandwidth,so you gain nothing.

But performance will degrade with higher resolutions,and increase with lower resolutions.

@ savage,I would think 560 sli is about the limit for x8 x8, though x16 x16 would likely handle more.


Gyro
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post #9923 of 12359
Quote:
Originally Posted by Gyro View Post

This about sums it up,

But performance will degrade with higher resolutions


Gyro

Would throwing a 3rd GPU into the mix, even if running at 8x, make a difference in the ability increase performance? What other paths would one have to take to improve performance. I suppose a newer faster card.

I'm a bit surprised that a faster motherboard with faster DRAM wouldn't help the situation some.
post #9924 of 12359
We are talking pci-e bandwidth only,of coarse a newer Mb with faster ram will help over all performance.
Adding a 3rd card will likely then bottleneck at the cpu,but resolution and how many monitors you run are big factors also.


Gyro
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post #9925 of 12359
Quote:
Originally Posted by Gyro View Post

We are talking pci-e bandwidth only,of coarse a newer Mb with faster ram will help over all performance.

Do you include PC Games in this grouping of overall performance, specifically FPS measurement? My thought to ask about the newer-faster motherboard was that faster data transfers would improve the performance of the GPUs.

Last night I fired up Skyrim and left EVGA Precision app running, and noticed that both GPUs were running flat out, and I know the CPU is not, and the PCI-E x16 interface is not even close to saturating.

Hopefully I will remember to benchmark the GPUs in my current rig and then again right after the hardware upgrade. But the evidence so far points to the GPUs being relatively standalone and I would not expect higher FPS for a given resolution and same PC Game when upgrading the motherboard and DRAM.
Quote:
Adding a 3rd card will likely then bottleneck at the cpu,but resolution and how many monitors you run are big factors also.
Gyro

Might be fun to try this. I think N2G was the only person I've seen around here post about pursuing such a config. In my setup, the CPU is averaging right around 70% in SLI mode.

P.S. I don't run multiple monitors yet, so all of my points are made in a single monitor configuration.

Cheers,
post #9926 of 12359
Ya games too.
Ram contributes more to smoothing of fps,rather than more fps,cpu and/or gpu oc would get you larger increases.
Quote:
Last night I fired up Skyrim and left EVGA Precision app running, and noticed that both GPUs were running flat out, and I know the CPU is not, and the PCI-E x16 interface is not even close to saturating.

If your not maxing the present hardware then you have to think what hardware will benefit from the newer tech.
SSD and usb for sure.
Ram,quality,quantity and speed would factor here.
Pci-e 2,if you're not maxing out pci-e1.
NB,higher freq,adjustable multi.(Most of the 570/590 chips can do cpu/nb 2000,stock for newer MB)


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post #9927 of 12359
Hey all. New to the forums and such and came across this handily informative little thread.

My situation is that i'm wanting to upgrade my comp a bit. Due to a restricted budget, the best option i have right now is to upgrade the processor (As can be seen from my system specs below, it's pretty much the weak point). So, that leaves me with a choice of what to stick in there. Happy to have discovered this site and the information that my board -can- handle those AM3 processors, i'm looking at the 955BE. What i'm wondering, and apologies if i missed this in an obvious place, is that.. i keep seeing "955 will work with a workaround". So, what's the workaround?

I'd much rather be clear on what i'm needing to do before going out and handing over the cash, as i'm sure you can understand smile.gif
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post #9928 of 12359
welcome.

Basically the workaround is the use of the Nvidia sytem tools or PhenomMSRtweaker to manipulate the cpu multi on x4 955-980 cpu's.
Without the W/O these cpu's run at x4 x 200 =800mhz.
It is an easy task.
If you don't want to use the W/O the x4 925,x4 945,x4 830 or any Athlon II cpu works with just a bios update.

Check the first page for more details.

Good luck

Gyro
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post #9929 of 12359
The workaround is explained on the first page. (big john's guide)

The short version is, that you have to use Nvidia System Tools with ESA support or Phenom MSR Tweaker (PMT) in order to set the multiplier within Windows in order for your CPU to run at it's full speed. Basically after you flash the BIOS with your current chip in, take out the battery and move the jumper then set them back. After that, Acces the BIOS and make sure that C1E, and CnC is disabled and set the multiplier and CPU voltage to at least 1.33. Power options in windows 7 have to be at maximum performance in order to set the multipliers properly.

Basically that's the small run down if it all, it sounds hard and all but it's not. I have a 970BE and it works great smile.gif

Good Luck
post #9930 of 12359
Quote:
Originally Posted by Agent_kenshin View Post

The workaround is explained on the first page. (big john's guide)
The short version is, that you have to use Nvidia System Tools with ESA support or Phenom MSR Tweaker (PMT) in order to set the multiplier within Windows in order for your CPU to run at it's full speed. Basically after you flash the BIOS with your current chip in, take out the battery and move the jumper then set them back. After that, Acces the BIOS and make sure that C1E, and CnC is disabled and set the multiplier and CPU voltage to at least 1.33. Power options in windows 7 have to be at maximum performance in order to set the multipliers properly.
Basically that's the small run down if it all, it sounds hard and all but it's not. I have a 970BE and it works great smile.gif
Good Luck

I guess we never got you to break down and come over to PMT... tongue.gifbiggrin.gif
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