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Physx

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December 12, 2012 10:15:08 PM

Hi, i recently decided to upgrade my computer quite a lot, i decided to upgrade my motherboard to a z77 extreme 9 and buy another gtx580 meaning i would have 2 in sli.
Im currently waiting for the second 580 to arrive and today i managed to grab a gtx470 off ebay very cheap, £40 cheap.
I bought the 470 to make a few quid by selling it on straight away but now im thinking i might use it as a dedicated physx card.
I do play physx games, batman being the major one.
Will i see a performance boost from the 470 as a physx card, even if its a small boost ill be happy and prob end up keeping the card.

Another question is power, my power supply is a Xigmatek Centauro 1000W Power Supply -http://www.overclockers.co.uk/showproduct.php?prodid=CA...

Its on the nvidia certified list for 2 580s but im unsure if it will power the 470 as a physx card, i know it will never be maxed because its doing physx, do you think it will be ok?

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a c 134 U Graphics card
a b V Motherboard
December 12, 2012 10:24:16 PM

You will see a performance increase in a game like batman arkham city however with a dedicated physx card you don't need much for example there are benchmarks that show that once you go beyond the speed of a gtx650 you no longer gain frames.
a b U Graphics card
a b V Motherboard
December 12, 2012 10:31:37 PM

U r like to use 3cards in that mobo.
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December 13, 2012 9:58:24 AM

Thanks, im looking forward to testing it all out, a 650 is around £80 new in the uk, i would never spend that much on physx because of the lack of titles but seeing i now have this 470 sitting here ill have a play around with it.
a c 134 U Graphics card
a b V Motherboard
December 13, 2012 4:44:55 PM

Nono your 470 will be fine I'm just saying that beyond the performance of a 650 which your 470 should amount to surpass you wouldn't gain further frames.

Here is a video that goes into it a little.
http://www.youtube.com/watch?v=cbww3dhzK0M
a c 134 U Graphics card
a b V Motherboard
December 13, 2012 4:48:23 PM

December 13, 2012 5:42:08 PM

Thanks, that video was just what i was looking for, it will be interesting to see if the 470 is enough to keep up with 2 580s in sli, i would of thought it should be as the 470 isnt a bad card at all, i was quite happy to get it for £40
a c 134 U Graphics card
a b V Motherboard
December 13, 2012 7:07:40 PM

Dude with Arkham city you'll be fine. I would definitely say you would be fine with 2 580's in sli. My 670 kicks tail with physx on high. I recently picked up a 1920x1080 screen my numbers dropped a little but nothing crazy maybe a few here and few there.



December 13, 2012 7:14:39 PM

I know ill be able to play it no problem, ive been playing no problem on one 580, it will be good to mess around with and see the results, im still a bit concerned about power though.
I also have 3d vision which with batman is good but frames are horrid, i dont use it that much as im not really that much into 3d, i bought it for the monitor more than anything but it will be good to see if it plays smooth insted of 25 - 30 fps average.
a c 134 U Graphics card
a b V Motherboard
December 13, 2012 7:24:33 PM

oh certainly having a dedicated graphics card will help with the physx portion. You don't use as much power using the card as a physx card. You should be good on the power end however its really hard to say I know 3 graphic cards in sli uses a ton of power I haven't seen a sli+dedicated physx card setup before. When you do this you can check your power consumption no with a program like afterburner?
December 13, 2012 7:31:12 PM

Im looking forward to it, its not going to be for a while though because i have a ton of stuff to do but when i do get round to it ill do some proper testing and post the results on here.
a c 134 U Graphics card
a b V Motherboard
December 13, 2012 7:35:20 PM

Looking around at tri 580's to give myself an idea of how much power you would need. People are saying you would need around 60 amps on the 12v rail which is around 720 watts in which case you have 75 amps which amounts to 900 watts on the 12v rail you should be good I would say.
December 13, 2012 7:40:32 PM

I looked on my 580 box and it says 42 amps on the 12v rail, now it cant double with 2 cards because my psu is certified by nvidia to run 2 which would be 84 but its not certified for 3.
December 13, 2012 8:48:05 PM

just had a read, im convinced now that i could run the 2 580s and the 470 but not 3 580s, i overclock my cpu so im looking at a few extra watts there, i use a i5 ivy and im looking at getting it stable at 4.8 @ 1.37v which should be easy now ive removed the ihs and replaced the tim.
Ive not had chance to test it yet proper.
a c 134 U Graphics card
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December 13, 2012 8:59:37 PM

replaced what "ihs, and replaced the tim"? Yea once you go beyond 2 the power requirements ramp up a bit from what I remember. I was just trying to use a benching point since I have a hard time finding 12v amp requirements on video cards anymore.
December 13, 2012 9:03:55 PM

ihs removal is going beyond the point most people are prepared to go when overclocking so it dosnt matter lol.
Im pretty sure my psu will be able to handle my setup, i cant wait to get started.
a c 134 U Graphics card
a b V Motherboard
December 13, 2012 9:14:57 PM

Ah its a bios setting you are referring to wasn't exactly sure what you were referring to I don't push my CPU that hard I only push my 2500k to 4.2 GHZ on a h100 I want a cold and quiet system.
December 13, 2012 9:24:51 PM

no lol, ihs removal is cutting the metal plate off the cpu with a razor blade to expose the die
a c 134 U Graphics card
a b V Motherboard
December 13, 2012 9:55:31 PM

well aren't we the risk taker. Yea, I think I'm good ha! now maybe if liquid nitrogen was in play I'd try :p 
December 13, 2012 10:09:29 PM

ive looked into it and watched vids on removing it so i give it a go and it was surprisingly easy
December 13, 2012 10:11:38 PM

the ivy bridge is very bad for heat, its because of the very cheap and nasty thermal paste ( tim ) intel decided to use.
Removing the ihs and replacing the tim improves temps, your ok because you have a 2500k
a c 134 U Graphics card
a b V Motherboard
December 13, 2012 10:24:50 PM

Well I would probably use the noctua thermal (non conductive) or artic silver 5.
December 13, 2012 10:29:02 PM

i always use artic silver 5, its the best tim available, did you know you can speed the setting process up by about 30% turning on and off every hour, thats maxing things out for a hour so it gets hot then turning things off and letting it cool for a hour
a c 134 U Graphics card
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December 13, 2012 10:30:46 PM

And at 4.8 ghz you should be fine with NH-D14 or a H100i. Only problem I think for you is the fact you have multiple graphic cards which do unfortunately draw more heat.
December 13, 2012 10:34:40 PM

im planning on using a h100i but its being modified via fans, 2 on the top plus shrouds pushing and 2 on the bottom pulling air, they are all corsair sp 120 performance fans, the cards push the air out so im fine with that
a c 134 U Graphics card
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December 13, 2012 10:35:05 PM

I did not know that. I just find it odd that you would have to expose the die.
December 13, 2012 10:37:13 PM

its only to clean the tim, you cant actually connect a heatsink to the die and it work believe it or not, its all about pressure and to get a heat sink to touch the die means removal of the clamp
a c 134 U Graphics card
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December 13, 2012 10:38:41 PM

Oh I see but it seemed like you open the cpu and use it or clean it now it seems but cant you just clean the thermal surface anyway without opening it up?
December 13, 2012 10:43:15 PM

no, because intel used very bad thermal paste to connect the die to the ihs.
once you remove the ihs you can clean the bad thermal paste off and replace it with good thermal paste, and yes its a gamble because you have to sit that cpu back in the socket and hope it works which it will
December 13, 2012 10:53:47 PM

I'm wondering, if anyone can explain this post to me. So you can have 2 cards in SLI and have a 3rd be a dedicated PhysX card? How's this possible??? Can you have 1 card that is your video card and a second be a Physx card? Any reading material on this?
a c 134 U Graphics card
a b V Motherboard
December 14, 2012 12:44:26 AM

Well the physx card is not connected through the sli bridge what you do is you have the 2 cards in sli and the one just connected. You could have for example two 580's and just disconnect the bridge and use the 2nd 580 as a dedicated card its fairly easy.
December 14, 2012 1:09:06 PM

Read it thanks! So, it seems that SLI will give better performance than doing a dedicated PhysX because if I read it correctly, framerates will take a hit with a dedicated PhysX card and a dedicated PhysX card is not needed if you have Nvidia 500 cards or higher?
December 14, 2012 1:12:49 PM

sli will be a better option if you have 2 exact same cards but if you want a boost but cant afford another card you can throw a cheaper card in and dedicate it to physx as long as its not too cheap as it might slow your first card down
December 14, 2012 1:19:07 PM

I know micro shuttering is an issue with SLI, but this is not the case with a dedicated PhysX card? Interesting. Im still debating whether I will get a 680, SLI or wait till next spring to see what will be new.
December 14, 2012 2:03:34 PM

what do you have now
December 14, 2012 7:40:32 PM

MSI PE/OC edition 570GTX Twin Frozr IV
December 14, 2012 7:46:35 PM

id get another 570 insted of a 680, much cheaper and 2 570s will destroy a 680
December 14, 2012 8:01:54 PM

Snazzy, did you get a dedicated PhysX card? I can't get the exact one I have. It was discontinued. I'm curious if I can get 2 680s for SLI and use the 570 as a physx card
a c 134 U Graphics card
a b V Motherboard
December 14, 2012 8:42:44 PM

Firstly , let me say you do not need two 680's at the present time. The reason the poster would more then likely need more then one card is primarily do to the fact that he is using a 3D vision setup. I used Batman Arkham city as a example because its DX11 game that is extremely taxing on computers now and when you add Physx on high and tesselation and AA+AF you end up with a crazy amount of resource draw. What I would suggest for you is this if you want.

Grab a gtx670 and if you need for physx use your 570 as a physx card. You do not need to use a sli bridge just plug it in like normal and go into nvidia control panel and set your physx settings to that card.
December 14, 2012 10:30:31 PM

also if you did want to sli your 570 you dont need the exact model as yours, just any other 570 would do, dont worry if the clock speeds are different, it dosnt matter.
December 14, 2012 10:34:25 PM

bigshooter 8 is right, 2 680s are a bit much, especially with a 570 for physx but yes it would work, if your running a single 1080p monitor it would be overkill, anything over 100fps and you wont notice any difference, it would be good to have though.
Those types of systems are used for 3d and triple monitor setups.
December 14, 2012 11:07:27 PM

bigshootr8 said:
Firstly , let me say you do not need two 680's at the present time. The reason the poster would more then likely need more then one card is primarily do to the fact that he is using a 3D vision setup. I used Batman Arkham city as a example because its DX11 game that is extremely taxing on computers now and when you add Physx on high and tesselation and AA+AF you end up with a crazy amount of resource draw. What I would suggest for you is this if you want.

Grab a gtx670 and if you need for physx use your 570 as a physx card. You do not need to use a sli bridge just plug it in like normal and go into nvidia control panel and set your physx settings to that card.



Interesting. The regular Twin Frozr MSI 570GTX is $279. Very intriguing to get that then, SLI it, wait for spring and if anything great comes out....sell them and get new PCIe 3.0 card(s).

The fact that the keplers are 256bit makes me wonder.

Hmm what to do???? I see 670 and 570GTX for Physx/ Bigshooter; would it be a waist to do this? Is there a way to monitor the framerates and see if my system takes a hit? GPU-z?
a c 134 U Graphics card
a b V Motherboard
December 15, 2012 12:27:41 AM

Honestly, I think with the card you now now I would wait till something better comes out I don't see the need to buy a 600 card when you have a high end 500 series card just saying. You aren't doing 3d or so you haven't said. You play a rts game that isn't all that demanding. Unless you are wanting ultra settings in bf3 with max AA+AF you will be fine.
December 15, 2012 12:34:38 AM

i have to agree with bigshootr8, the 6 series of cards are only overclocked 5 series anyway, i know for a fact the 580 at 1ghz performs exactly the same as the 680 at 1ghz, all the bells and whistles that nvidia said the 6xx cards have came out in drivers for the 5xx cards.
If you want to upgrade grab a cheap 570 off ebay and wait till the 7xx cards come out, the 6xx series was a disappointment
a c 134 U Graphics card
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December 15, 2012 12:38:10 AM

I wouldnt go that far to say it was a disappointment I went from a 560Ti in sli to a 670. Lowered my power bill and I got better performance I mean its a upgrade is a lot more no.
December 15, 2012 12:48:04 AM

2 560ti roughly would perform the same as a 670 with the 560ti slightly beating the 670, the 6 series was a disappointment because the die shrink could take more power meaning higher clocks meaning a really beefy set of cards, insted nvidia put the clocks up a little and started heavily reducing size in every department.
If they had kept things that same power and size wise they could of heavily increased clock speeds, but as everyone knows that will be the 7xx cards
a c 134 U Graphics card
a b V Motherboard
December 15, 2012 12:49:30 AM

Yea I see the 7 series being the big leap ahead especially with higher res screens on the horizon
December 15, 2012 12:55:00 AM

back in august i would of bet my life on a 685 coming out with a heavy heatsink and a 8 + 6 pin power connector to piss on amd but it never happened.
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