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8800GTS 640MB for Physx with GTX460?

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September 23, 2010 2:36:40 AM

Hi,
Thanks for everyones help before:) . I got a regular EVGA GTX460 768MB. Performance jump is absolution ridiculous. It has graphics settings i haven't seen before and is just outstanding. It maxes out all my games now with ease. Modern Warfare 2 (which I play sometimes)...is maxed out completely at 1080p with Nvidia control panel settings jacked up the absolute max, 32x AA, 16xAF, 8x supersampling...etc. Still gives me like 50fps. Now, here comes my question. Assuming I don't care about heat and power consumption. If I were to place my old Nvidia Geforce 8800GTS 640MB (Factory Overclocked) as a physx processer. Would it increase performance?...If so then how much would you suppose?. In addition, if I were to use it, I would just stick into the next PCI slot and then just set it as my physx processor in Nvidia Control Panel?

Thanks for any help.

(Just wondering I can still pu the 8800 to good use, sell it, or stick it in my server for the heck of it.
a c 189 U Graphics card
September 23, 2010 2:57:28 AM

If you're satisfy with your PC performance then stay with your current GTX460.
Yes, you can add 8800GTS as PhysX card and get some performance increase.
If i were you, i would sell your 8800GTS, i don't like lots of heat inside my case. :) 
a c 169 U Graphics card
September 23, 2010 3:08:26 AM

yeah, i would go with just the one card, unless your finding a particular game that uses physx, struggles with just the one card...
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a b U Graphics card
September 23, 2010 3:11:40 AM

The increase is minimal and not even noticeable. If you have it use it and try it if you dont like it I would stick it in your server. Like wa1 siad it is extra heat in your case.
a b U Graphics card
September 23, 2010 3:19:32 AM

thats a very inefficient setup mate. your physx card will consume more power than your main card.
a c 125 U Graphics card
September 23, 2010 4:01:09 AM

I doubt the 8800GT would eat a lot of power. It's not that efficient, true, but PhysX isn't super demanding either. Generally, anyway. Most of the time my GT240's usage is quite low with PhysX games on high but I don't know how badly it effects FPS on a single 460. I'd say it's worth it if you have a case with decent cooling and PSU.
a b U Graphics card
September 23, 2010 4:04:40 AM

If you have the PSU to run it, try it, its not going to hurt.
a c 164 U Graphics card
September 23, 2010 4:11:43 AM

As I understand it there will be no increase. Lets say your getting 50FPS now. If you turned on the PhysX effects with no dedicated card, your GPU will be handling GPU + PhysX duties at the same time so your frame rates will go down. No clue how much, lets say you'll get 40FPS now. By adding a dedicated PhysX card your main GPU will no longer have to do both and will now give you those 50FPS back. What you will get is the extra particle effects that PhysX provides making things look better.

I suppose you'll see a boost if you are trying to use PhysX right now on your single card. In this case your card won't have to do it anymore and your FPS will go up to 60. (remember, just picking numbers out of the air.) Also keep in mind that there are few games that need a dedicated card. Look at the list on SLIzone to see if you even play them.
a b U Graphics card
September 23, 2010 8:31:17 AM

I doubt the 8800GT would eat a lot of power. said:
I doubt the 8800GT would eat a lot of power.


thats a gts640, that's 90nm mate.
a c 125 U Graphics card
September 23, 2010 2:36:08 PM

Dedicated PhysX card does help


wh3resmycar: Yes, and it does eat power - my point is that highest power usage is under full load. It will not be under full load.
September 23, 2010 3:06:39 PM

try it, it wont do much harm

Best solution

a c 164 U Graphics card
September 23, 2010 4:24:14 PM
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To merge my post with the chart that Wolf posted I'll say the following. No dedicated card is "40FPS" number. The one card you have has to do all the work, graphics and physx. As you use the better and better cards more physx work is done by the add in card allowing the GPU to handle less physx and more graphics. This happens until you hit the GTS250/GTX260 where all of the physx processing can be handled by the add in card. (the "60FPS" number I throw out) You can get the same "add in card" benefits if you turn off PhysX, but of course the game won't look as good. It should tell you however what is possible if you have a good add in card.

Adding in the better cards did provide an 80% increase in frame rates. Your GTS card is a bit weaker then the 9600GT, so assuming all things being linear your gains should be around 65%. This is assuming you have PhysX enabled already, and at high. If you haven't enabled them yet at all you should see no speed gains, but you'll get the increased particle effects.
a c 271 U Graphics card
September 23, 2010 4:41:19 PM

wh3resmycar said:
thats a gts640, that's 90nm mate.

Even so it only consumes about 125w compared to the GTX460's which are around the 160w mark.
September 23, 2010 7:57:28 PM

Thanks for all the replies. I looked at the list, and unfortunately barely any games support physx...not crysis, not MW2...not COH...! So i am guessing its pretty much useless to put it back in. However, can it make ingame physics and effects/particles look better?...not Nvidia Physx but just regular ingames physics and particles? Maybe it can give me some benefit.
a c 125 U Graphics card
September 23, 2010 8:01:15 PM

Nope, it will only see usage in PhysX accelerated games. Some of the PhysX games really are worth playing, and in those cases you might consider plugging the card in, but you're right the list is small which is why most people advise to just avoid it.
September 23, 2010 8:36:03 PM

Yeah I will, if I ever do buy a physx accelerated game, i'll just plug it in...after all...its just powering down the machine, opening it, and shoving the card in lol.

Edit: I actually took a good look at my temperatures...rubbed my eyes...and realized, this card idles 13 Degrees Celcius Cooler and runs like 20 Degrees Celcius cooler under load then my old 8800...not just that but other hardware in my system dropped in temps. My MB idles at 38 Degrees when before it was 46 Degrees and my CPU which idles at 32-35C during summer is now idling at 27 Celsius....thats impressive, I am definitely not putting the other card back in.
a c 164 U Graphics card
September 23, 2010 11:25:45 PM

When PhysX first came out I was very excited. But then I saw that no Valve games are supported (TF2) so it would do me no good. I check the list every now and then, but there really isn't anything on there I want to play.
a c 271 U Graphics card
September 23, 2010 11:29:33 PM

4745454b said:
When PhysX first came out I was very excited. But then I saw that no Valve games are supported (TF2) so it would do me no good. I check the list every now and then, but there really isn't anything on there I want to play.

I bet you actually lie awake at night wishing you could play Crazy Machines or PT Boats! [:mousemonkey] *runs away*
a b U Graphics card
September 24, 2010 12:24:45 AM

^ :lol: 
a c 164 U Graphics card
September 24, 2010 6:28:00 AM

Its funny you mention those games because from what I've heard PT is very pretty with good PhysX effects and Crazy machines is a lot of fun if you like that kind of game. (which I don't.) Also from what I hear the only other games worth it are those levels in UT3, City of heros/villians, and the game Batman:AA.
a c 271 U Graphics card
September 24, 2010 6:59:40 AM

4745454b said:
Its funny you mention those games because from what I've heard PT is very pretty with good PhysX effects and Crazy machines is a lot of fun if you like that kind of game. (which I don't.) Also from what I hear the only other games worth it are those levels in UT3, City of heros/villians, and the game Batman:AA.

I thought UT3 was meh and Batman AA was less fun than having my eyeballs scooped out with a rusty spoon but I may be missing something.
a c 164 U Graphics card
September 24, 2010 8:22:23 AM

I've never played any of the games, but from what I've seen none of them are anything I'd enjoy.

I would like to point out once again that Nvidia has done this all wrong. If they wanted PhysX to catch on they need to shove it down our throats, not restrict it so much that there are hardly any games out that support it.
a c 125 U Graphics card
September 24, 2010 3:19:59 PM

PhysX games I've enjoyed are:
Cryostasis
Metro 2033
Batman AA
Mirror's Edge
Mafia 2

I played a little bit of Dark Void but not much so I can't really comment on it yet.
October 9, 2010 7:07:29 PM

Best answer selected by blackhawk1928.
a c 271 U Graphics card
October 9, 2010 7:16:57 PM

This topic has been closed by Mousemonkey
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