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Do you need an SLi Mobo for a Physx card.

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a b U Graphics card
March 31, 2011 10:35:48 PM

So do you need an Sli motherboard for a dedicated Physx card?

More about : sli mobo physx card

a c 612 U Graphics card
a b V Motherboard
March 31, 2011 10:50:26 PM

No you do not. Any motherboard with two PCIe slots.
a b U Graphics card
March 31, 2011 11:06:31 PM

PCI Express x16?

Or Just PCI Express?

EDIT: So could i use a GTX 460 768MB and a Gt 220 1GB on a M4N68T?

Also, If I sue the GT 220, do I need to use a PCI power connector, as it only uses 58W power max.

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a c 612 U Graphics card
a b V Motherboard
March 31, 2011 11:15:18 PM

You do not need to use an x16 slot for a dedicated PhysX card, and I would use whatever power connector the card has on it.
a b U Graphics card
March 31, 2011 11:57:14 PM

my question is if I add a physx card to my rig will the primary pci-e slot run at 8x instead of 16x, like it does when I ran crossfire? This has been holding me back from buying a dedicated physx card
a c 612 U Graphics card
a b V Motherboard
April 1, 2011 12:03:20 AM

That's a good question, but I'm going to go with "no", your primary graphics card will still run at x16. It would be the same if you used a PCIe audio card in the second slot. I'm just educated guessing here, though. I think the SLI/Crossfire lane splitting is a necessary part of running two graphics cards in tandem on certain motherboards (mine for example), but not applicable for non-SLI/Crossfire setups.
a c 173 U Graphics card
a b V Motherboard
April 1, 2011 12:12:14 AM

It doesn't matter what board that you have in the end. It isn't like sli ware you are unable to enable it on some boards but to the contrary it will work in the vast majority. I got a 790x 8x by 8x crossfire board and that didn't stop me from running a 8800gt as a dedicated card. If you want to use an nvidia card along side with an ati card then you will need to patch the nvidia drivers so both end up playing nice so to speak beyond that it is very easy.

GT220 is a very weak card for dedicated physx though but a Lot faster than physx on any cpu to date.

GTX 460 main card and then a dedicated 8800gt for physx. Typically my 8800gt gets to 15-40% load in mafia 2 just doing physx while my gtx 460 is just for the graphics. Smooth 60fps :) 

Any thing less than lets say 64 shaders isn't going to be enough while there are still gains to be seen with the 48 shader gt220 just not a big one unless ati user that was running physx off the cpu.
a b U Graphics card
April 1, 2011 12:44:03 AM

so if I want something that I will experience minimum fps drop on high should I get a gtx 260 or do you need more, I know in general its overkill but if I'm going to have a dedicated physx card I want the frames to pretty much never drop below 60 with a high physx setting in a game such as batman aa and mirrors edge
a c 612 U Graphics card
a b V Motherboard
April 1, 2011 2:45:23 AM

A 220 is okay, but a 240 is the minimum card that I would have. A 260 is a little better, but the gains above that are not at big as jumping up to a 240 from a lower card. A 240/260 is the sweet spot, I think. Do not use a GT 430, that is the only 400 or 500 series card that is (relatively) worthless for dedicated PhysX.
a c 173 U Graphics card
a b V Motherboard
April 1, 2011 2:55:20 AM

jjb8675309 said:
so if I want something that I will experience minimum fps drop on high should I get a gtx 260 or do you need more, I know in general its overkill but if I'm going to have a dedicated physx card I want the frames to pretty much never drop below 60 with a high physx setting in a game such as batman aa and mirrors edge


To be honest a gtx 260 is serious overkill. physx is not going to see impact of aa ect unless ran on a system with only a single card or in sli/crossfire without a dedicated card. You will be amazed what a simple dirt cheap g92 can do for a high end setup. I watched a video two or three months ago that was posted over the summer with three gtx 480 in tri sli vs two gtx 480 + a 9800gt in batman. The two way with the dedicated card amazing won by a land slide. This is due to the nature of physx. It will take as much as you give it but when it is on the main card it is like dead weight. We all know that in sli that the main card is vital for over all system performance and any lag there will not be pretty. avg load on my ancient dusty 8800gt that people seam to think that is from like a billion years ago now is around 15% while I do see 25% often with 40% being the max. There is a script that I am guessing that caps physx performance on most cards and is why people seam to see gains over lessor cards. Without the cap it can wreck performance in your normal sli systems and cripple every thing else if only on the cpu. So if you are thinking that my old dinosaur 8800gt isn't quite enough then aiming for a gts 250 or a dusty old 9800gtx that can reach higher clocks will be fine. Just avoid cards like the gt 430 and gts 450 as Fermi shader architecture isn't as fast as the older on a unit to unit bases. gtx 260 is as much as you want to go any thing over that you are looking at a money waster unless dirt cheap on the second hand market.

Typing isn't as fun with a cut on ones hand :( 
Timber bamboo is something else.
a c 173 U Graphics card
a b V Motherboard
April 1, 2011 2:59:10 AM

17seconds said:
A 220 is okay, but a 240 is the minimum card that I would have. A 260 is a little better, but the gains above that are not at big as jumping up to a 240 from a lower card. A 240/260 is the sweet spot, I think. Do not use a GT 430, that is the only 400 or 500 series card that is (relatively) worthless for dedicated PhysX.


True but one of the best cards for the job isn't just those two cards not when single slot g92 based cards can outrun a gt240 with only 1/2 to 2/3 the cost. Higher unrestrained shader clocks and higher shader count. Drop the core to nothing and nuke the shader to 1.8-2ghz.

I spent two months looking up and researching before I settled on the card I got now for my dedicated physx. A cheap single slot 8800gt. I also made more use of it than just that, swivel mounted 40mm fan to push more air into the cooler of my gtx 460 ;) 
a c 612 U Graphics card
a b V Motherboard
April 1, 2011 3:12:25 AM

I was going with this chart, that confirms what you said nforce, the 8800 is a good choice, and as good as a 240:

a c 173 U Graphics card
a b V Motherboard
April 1, 2011 3:38:10 AM

Something isn't right about that chart o.O a 8800gts should be closer to the gts 250 but slightly slower due to clocks but above the gt240 and the 9600gt.

8800gts 128 shaders 650mhz or so with linked clocks
9600gt 64 shaders once again very much the same clock or slightly less for reference.
gt 240 96 shaders with lower clocks on avg than the 9600gt (they should have put a connector with better vrm or it would have been a oc monster) but ok over all.

I have tried weaker cards on my own for dedicated physx and I can say straight up any thing less than a 9600gt isn't going to work out very well. 8400gs back in the 191 days was well horrific. 8600gt wasn't much better either and the 8400gs was nuked.

Instead of only quoting charts also quote system specs as charts alone are very deceptive for all I know this could have been ran on a 4ghz+ i7 paired with two or more ssd in raid 0. Clocks on all these cards tested and skew the results greatly. The best measure of physx performance on a dedicated card when comparing to other cards is to oc or downclock as needed so there is a lv playing field.
a b U Graphics card
April 1, 2011 1:14:26 PM

thanks for all the info
a b U Graphics card
April 1, 2011 3:24:00 PM

Mai thread >.>
One last question, I wanted to get a Dedicated card that I could use without needing to connect it to my PSU, because all the PCIE slots are occupied by my GTX 460.

So, would both of these card work in the M4N68T/
Also, how do I know which card the dedicated Physx card will be.
a c 173 U Graphics card
a b V Motherboard
April 1, 2011 3:42:18 PM

Sorry but no you can only use one card. Only one pci-e 16x slot so no dedicated card unless new board.
a b U Graphics card
April 1, 2011 3:44:58 PM

But it has a PCI x4, isnt that PCIE 1?

Would the loss os speed be noticeable with the GT 220 as a Physx card?
a c 173 U Graphics card
a b V Motherboard
April 1, 2011 3:47:30 PM

yummerzzz said:
Mai thread >.>
One last question, I wanted to get a Dedicated card that I could use without needing to connect it to my PSU, because all the PCIE slots are occupied by my GTX 460.

So, would both of these card work in the M4N68T/
Also, how do I know which card the dedicated Physx card will be.



http://www.newegg.com/Product/Product.aspx?Item=N82E168... ??????
a b U Graphics card
April 1, 2011 3:52:57 PM

Yes, that Motherboard, also, check my last post.
a b U Graphics card
April 1, 2011 3:56:52 PM

yeah my board will default to 8x8 if two slots are populated no matter if in crossfire or not.... so no dedicated physx card for me although im considering an am3 sli board
a b U Graphics card
April 1, 2011 4:01:14 PM

Hm, Guess Il buy the GTX 460 768MB now, and upgrade the Mobo and buy a GT 220 later on in the year....Maybe.
a b U Graphics card
April 1, 2011 4:04:14 PM

terrible idea the gt 220 is not worth investing in as a physX card, it can barely do the job and what is your monitors resolution and the rest of your system specs? I would personally go with a higher card then a 768mb 460 to start off with or I think you will find yourself upgrading immediatley if you are playing at 1080p
a b U Graphics card
April 1, 2011 4:14:34 PM

Ill be playing games like Crysis Warhead @ 720p(Or higher) On a 32" TV or a 19" Moniter, and I know that the GTX 460 768MB will be able to handle this @ 30+fps.


Other PC Specs :

AMD Phenom II X4 955 Black Edition

Asus M4N68T -M

4GB DDR3 1333hz (2X2GB)

500GB S-ATAII 3.0Gb/s

22x DVD±RW DL S-ATA

Onboard 7.1 Audio

Xigmatek Asgard

500W Xigmatek PSU (NPR-VC503)

Windows 7 Home Premium

GTX 460 768MB.
a b U Graphics card
April 1, 2011 4:17:49 PM

yeah at 720p you should be okay I didnt realize you were using a 720p monitor, but imo if you went to 1080p the 768mb 460 would not be enough, not to mention that crysis warhead (although not as demanding as the first) is still pretty darn demanding I'm sure it will be playable with cut down settings at 30+ fps but you may find yourself wanting a bit more on a resource hog of a game like that, just my 2 cents, the 768mb 460 should do okay but if crysis is one of yoru main games I would look for something better personally
a c 125 U Graphics card
a b V Motherboard
April 1, 2011 4:35:00 PM

GT 240 is a great physx card and can be had for as little as $65 PLUS a rebait so only $45 after that.

From my understanding around 100 CUDA cores is the sweet spot. I know a 250 or 260 can have some gains in very heavy PhysX scenarios but with my 240 I've played Batman, Cryostasis, Mafia 2, Metro 2033, Mirror's Edge and usage was usually really low, like below 25%, and sometimes would go up to around 50 or 75%. My fps were always really good as well, with my CF 5850s.
a b U Graphics card
April 1, 2011 4:36:42 PM

Sorry, what was that, I think my kind was just raped by the specs of your Pc.
a c 125 U Graphics card
a b V Motherboard
April 1, 2011 5:06:12 PM

yummerzzz said:
Sorry, what was that, I think my kind was just raped by the specs of your Pc.


lol! :lol: 

Well... yeah it's pretty sweet. BUT! There's a lot of people on this forum with rigs twice as good as mine :ouch: 

:bounce: 
a b U Graphics card
April 1, 2011 5:09:02 PM

Turns out Im getting it earlier than expected, my Dad is coming back early next week, so Ill be playing Crysis:Warhead, War, and Crysis in no time!
a c 173 U Graphics card
a b V Motherboard
April 1, 2011 6:24:26 PM

Yea it does seam that a lot of people here make hundreds of thousands of dollars or euros a year or more :pfff: 

What next using a new Bentley for an extreme desk mod? :pt1cable: 
a b U Graphics card
April 1, 2011 6:29:26 PM

XD, thanks for all your help guys, Ill be making Crysis vids in no time.
a c 125 U Graphics card
a b V Motherboard
April 1, 2011 7:46:25 PM

lol nforce!

Buy the new Bentley and chop it up, and only use the front portion as a desk. Throw the rest out...

But yeah, seriously... psycho replaced SLI 580s with CF 6990s... like what!? Oh well, if I had a ton of disposable income I guess I would too. That or soup up my car. Or both? :D 
a b U Graphics card
April 1, 2011 8:03:30 PM

yummerzzz said:
Turns out Im getting it earlier than expected, my Dad is coming back early next week, so Ill be playing Crysis:Warhead, War, and Crysis in no time!



why is this something you would advertise!?!? Daddy buy my a new GPU, get a job kid
a b U Graphics card
April 1, 2011 8:04:41 PM

wolfram23 said:
lol nforce!

Buy the new Bentley and chop it up, and only use the front portion as a desk. Throw the rest out...

But yeah, seriously... psycho replaced SLI 580s with CF 6990s... like what!? Oh well, if I had a ton of disposable income I guess I would too. That or soup up my car. Or both? :D 



replacing sli 580s with the 6990s is probly the single dumbest upgrades imaginable, just waiting for him to be totally fed up and tell us hes buying two 590s next lol what a joke
a c 271 U Graphics card
a b V Motherboard
April 1, 2011 8:10:46 PM

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