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Should I use the extra card for PhysX?

#1tigerex777Posted 2/7/2014 6:42:38 PM
I purchased a GTX770 and it's getting here by Monday. I currently have two GTX 460s and I'm debating whether to sell them or use one for PhysX. Some guy wants to buy them for $100 and I don't know what I should do. Is it worth the extra space and electricity for PhysX? Or should I sell them?
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i5 760 @ 3.8ghz / 4GB DDR3 Ripjaws / GTX 460 SLI @ 800/2000 / Cooler Master GX 750W PSU / Cooler Master Advance II case / Acer 22 1680x1050 / Windows 7 64
#2SnadadosPosted 2/7/2014 6:50:28 PM
Do you have any games that use physx?
I'd do some tests first to see if you get better performance using the 460 for physx vs letting the 770 do everything.
You could actually lose performance if the 460 is not powerful enough to keep up with the 770.
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#3PhilOnDezPosted 2/7/2014 6:52:04 PM
Sell 'em. It won't be worth it to run one for PhysX, they'd probably hold back the 770 honestly.
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#4DV8ingSourcesPosted 2/7/2014 6:52:42 PM
100 for both? Or 200 for both? For 200, I'd sell.

Depending on the game, a 460 may or may not hold you back, even as a dedicated physx card. I know my 670 has no issues in most games (AC4 still has a few slowdowns but the game in general does). I'd test to see if you would benefit from it. I'd imagine a 460 is enough but I wouldn't be surprised if it 'holds back' the 770 in some instances.
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2500k @ 4.4 | P8Z68-V Pro | H80 | 8GB RAM | 770 + 670 physx | 256 SSD | 8TB HDD | Win 8.1 64bit | ax1200w | CM690II
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#5tigerex777(Topic Creator)Posted 2/7/2014 8:54:59 PM
Well the gtx 460 is going to be used as a dedicated physx card so I don't know how it would hold back the 770. Yeah, the guy offered 100 for both.
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i5 760 @ 3.8ghz / 4GB DDR3 Ripjaws / GTX 460 SLI @ 800/2000 / Cooler Master GX 750W PSU / Cooler Master Advance II case / Acer 22 1680x1050 / Windows 7 64
#6DV8ingSourcesPosted 2/7/2014 8:59:15 PM
Because the 770 now has to wait for the 460 to process all the particle effects which can seriously require more performance than a 460 offers. Again depends entirely on the physx implementation. Lots of smoke effects tends to ruin things but debris should be handled just fine. You might be surprised as to how much power is required for some of the effects in some situations.

I don't know the going prices, but 2 decent cards for 100 seems like a waste of time. Maybe get a friend into pc gaming and hook them up with one of the cards instead. It's also nice to have at least one backup card.
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2500k @ 4.4 | P8Z68-V Pro | H80 | 8GB RAM | 770 + 670 physx | 256 SSD | 8TB HDD | Win 8.1 64bit | ax1200w | CM690II
Steam: DV8ing1
#7tigerex777(Topic Creator)Posted 2/7/2014 9:08:48 PM(edited)
DV8ingSources posted...
Because the 770 now has to wait for the 460 to process all the particle effects which can seriously require more performance than a 460 offers. Again depends entirely on the physx implementation. Lots of smoke effects tends to ruin things but debris should be handled just fine. You might be surprised as to how much power is required for some of the effects in some situations.

I don't know the going prices, but 2 decent cards for 100 seems like a waste of time. Maybe get a friend into pc gaming and hook them up with one of the cards instead. It's also nice to have at least one backup card.


Yeah I think I'll keep the cards. Use one to build an entry level gaming pc for someone and keep one for back up if the 770 funks up.
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i5 760 @ 3.8ghz / 4GB DDR3 Ripjaws / GTX 460 SLI @ 800/2000 / Cooler Master GX 750W PSU / Cooler Master Advance II case / Acer 22 1680x1050 / Windows 7 64
#8MarikhenPosted 2/13/2014 12:32:50 AM
If you run multiple monitors, or might reasonably decide to in the near future, having a second card for the extra monitors can be a good thing. From my experience just having a second monitor plugged in and powered on will provide a small, but noticeable, performance hit to full screen game performance. Rather it might be more accurate to say that when a card is sending output to two or more monitors the primary monitor doesn't receive any performance bonus for running in full screen mode.

For some purely hypothetical numbers it boils down to single monitor in full screen maybe getting 75 FPS while single monitor in windowed, full screen/semi-windowed or otherwise, gets 70 FPS, and multi-monitor gets 70 FPS regardless of full screen, windowed, or windowed full screen mode.

If you're not running multiple monitors and you're not planning on playing any games that might stress the new card beyond its ability to provide both graphics rendering and PhysX calculations then go ahead and toss the old cards to help recoup some of your loss on the new one.

Personally though, Murphy's my patron saint. I'd keep the cards for at least a month if not closer to six just so that I could have time to get some real world, personal evaluation time with the new card and give it plenty of time to break. Even if it could handle all the games I play, PhysX included, at 60+ FPS and I never planned on using more than one monitor I'd still keep them for awhile on the grounds that it's better to be safe than sorry.

Of course I also have three PCs, two graphics cards for one, and four cards (well, 4.5 depending on how you count a GTX 7950) for the other two. I've got plenty of coverage for most anything but robbery, fire, and thermonuclear warfare.

For even more overkill the PC that has two cards also has onboard video. Frankly, that onboard video thing kinda annoys me now since one of my other PCs is being used as a media center and would do the job just fine with the onboard video from my primary PC; it doesn't need an HD4830 to do its job. :-/
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