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#49 | |
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CUBE
Join Date: Jan 2003
Location: PA, USA
Posts: 18,844
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There really isn't that much going on in the game in the physics area. Crysis had FAR more physics interactions without having deformable terrain. The real benefit of Physx comes from visual effects that react realistically but don't effect the game play (since not everyone will have hardware Physx support). It has nothing to do with small numbers of large physical objects reacting because that's easy for a CPU to handle. When you have hundreds of thousands of particle effects bouncing around and interacting with the scenery though, you need to have something similar to a GPU to process it all. Water, smoke, sparks, debris... that is what physx is for. Crysis and Flatout 2 are perfect examples of what kind of physics a CPU is good at (hundreds of medium to large objects in a scene that actually interact and effect the player's movement), but neither have realistic liquid physics, volumetric smoke or particles that bounce off of the scenery. Things like that are just too much for most CPUs, yet a GT 240 or 9600GT would barely break a sweat if used as a dedicated Physx card.
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6GB DDR2 @ 942Mhz 5-5-5-20 1.9v (2x1Gb Wintec AMPX PC2-8500 & 2x2Gb G.Skill PC2-6400) - EVGA Geforce GTX 470 @ 750/1500/1850 (1.050v) Sparkle Geforce GTS 250 1Gb Low-Profile (Physx) - Crucial RealSSD C300 64Gb SSD - Seagate 7200.12 500Gb SATA - Seagate 7200.10 320Gb SATA ASUS VW266H 25.5" LCD - OCZ GameXStream 700W PSU - ASUS Xonar DX - Logitech Z-5500 5.1 Surround - Windows 7 Professional x64 ---- HTPC ---- Asus M3A78-EM 780G - AMD Athlon X2 5050e 45W @ 2.6Ghz - 2x2GB Kingston PC2-6400 DDR2 - Sparkle 350W PSU Seagate 7200.10 320Gb SATA - Seagate 7200.10 250Gb SATA - Athenatech A100BB.350 MicroATX Desktop - Creative X-Fi XtremeMusic |
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#50 | |
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Registered User
Join Date: Apr 2004
Posts: 534
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If a game dev is going to do something, then they should do it, not half as it.
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C2Q6600@3.3 ![]() ASUS GTX570 eVGA 780i SLi AR 8GB DDR2 PC8500 Windows 7 U x64 |
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#51 | |
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Registered User
Join Date: Jul 2003
Posts: 1,526
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No i'm not,just old enough to have seen the birth of 3D graphics for home systems from the very start,and the bull**** marketing departments perform to make their hardware look special compared to the competition,even when direct X sucked hard and didn't support enough features compared to Glide or either OpenGL,and GPU makers always added that something extra in the graphics features dept. But what eventually happened?....DX got better,OpenGL went by the wayside for games,and starting with DX10,all features because mandatory to support in the standard,with no possibilities to support extra features at all,so GPU makers can't make their cards add that special something in terms of graphics features anymore. So what does Nvidia do starting in 2008?,add physics support and 3D vision,which have nothing to do with microsoft standards,in order to make their products seem special to less experienced users...Same ****,but slightly different smell when compared to what happened with the graphics standards getting unified thru Direct X10 for everybody. And apart from the NV1,there was also the NV30,and it remains to be seen how fermi shapes up,and that Nvidia also no longer has a licence to make a chipset for intel for the i3/i5/i7 platforms,only the older prescott CPU's....Keep that in mind ![]() |
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#52 | |
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Registered User
Join Date: Jul 2003
Posts: 1,526
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Yup,offering DX11 6 months ahead of super Nvidia,or the best performance period or using 3 monitors in gaming,using a single card,or being the first cards with directX 10.1 compliance,starting with the failed R600 CPU.....But hey,they're always broke and have no money for the features people want according to you.... ![]() |
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#53 | |
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Registered User
Join Date: Jul 2003
Posts: 1,526
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Oh so physics for you is not the behaviour of the graphics assets and how they react while they're getting destroyed,but also remain on the ground after they've been destroyed as well?....LOL. If they did that,you'd have to store all that data either within the video card memory or at least,system memory and see the memory requirements for the game shoot thru the roof for both main ram and/or video card memory. |
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#54 | ||
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Join Date: Apr 2004
Posts: 534
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![]() Ah, that has yet to be settled in the courts. Nvidia has i3/i5/i7 based chipsets waiting to be made into silicon and sold based on the out come of that court case. Try not stating things as fact when stuff hasn't been settled yet.
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#55 | ||||
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Join Date: Jul 2003
Posts: 1,719
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![]() * for those unfamiliar, B&M retailer KMart used to have "Blue Light Specials" on merchandise they were clearancing.
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Rig1: intel 990X + 2 X EVGA 3GB GTX580 + 3 X Acer GD235Hz 3D Vision Surround Rig 2: intel 2500K + NVIDIA GTX590 + Dell 3007 WFPHC [SIZE="1"]NVIDIA Focus Group Member [B]NVIDIA Focus Group Members receive free software and/or hardware from NVIDIA from time to time to facilitate the evaluation of NVIDIA products. However, the opinions expressed are solely those of the Members.[/B][/SIZE] |
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#56 | |
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Registered User
Join Date: Apr 2004
Posts: 534
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C2Q6600@3.3 ![]() ASUS GTX570 eVGA 780i SLi AR 8GB DDR2 PC8500 Windows 7 U x64 |
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#57 |
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Registered User
Join Date: Feb 2010
Location: Germany
Posts: 186
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Of course PhysX is great (at least in theory, I'm not a programmer).
But in its current state it is in no way an argument to get an Nvidia card, simply because there are almost no games that use it (thanks to Rollo for the backup on that) and most of the ones that do are crap. Also, the problem is that in the games that use it, the stunning effects that result from it can as well be faked, which doesn't look as good (call it preprogrammed or static) but is hardly noticeable by a "normal" customer. The difference would be subtle. The Nvidia promo video simply didn't show any effects at all, this is of course a drastic difference. Games like Half-Life 2 are good examples of how cheap fake effects can come close to much more sophisticated algorithms. Everybody can see the difference between a scene with and without HDR at first glance. But this already gets harder with a simple bloom effect. Plus it doesn't cost as much performance as PhysX does. My Core i7 920 / GTX 295 rig wasn't able to render Cryostasis with advanced physics enabled at what I'd call decent frame rates (also see here. Another example here: http://www.youtube.com/watch?v=g_11T0jficE Instead of the water drops, there's nothing in the left scene. That's a design decision, not a reason to use PhysX. It's not like there wouldn't be an alternative. Or the bullet marks - nobody would ever notice this in normal gameplay if he's not an enthusiast looking for it so he can tell his fellows: look how great those sparks are! GPU accelerated physics are a great thing: they make virtual worlds more realistic, they hopefully make it easy to design dynamic effects, they improve the overall game experience. And with the cards now being faster than any existing game requires, there's a lot of horsepower left to compute them. But they're for sure not a reason to stick with a brand that tries to push a proprietary technology. Nvidia can make the people think that this is the case though - that's what makes them so dominant. So this would probably be more precise: |
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#58 | ||
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Registered User
Join Date: Jul 2003
Posts: 1,526
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Look up the latest id tech 5 engine,which will be used with their next game called rage btw,and they've shown videos of it for the last 2+ years....You might be in for a surprise,as it can run on current consoles(they don't have OpenGL support) Though you are right that up to their id tech 4 engine,they used OpenGL,but that was before DX10 was even officially released. Quote:
They already have openCL drivers available,and yes they're not even beta....I know it's a shocker,and as for physics,there's plenty of options available to make them pretty good....All i know is that i have an i7 CPU right now,which as everyone knows has 4 physical CPU cores and 4 logical ones,so they're capable of handling up to 8 threads at the same time,yet most gaming software doesn't even use half of that,even in the most recent titles,so there's hardware to further improve physics available right there,hence why CPU based physics get used so much more often. And here's the crazy part,intel are coming out with 6 core/12 thread CPU's,and not just for the very highest end either,and so is AMD with 6 core thuban processors,both of which can be used in current motherboards,and within the coming months,so in practical terms,why would i worry about GPU based physics in the short term at least? Quote:
,and that trials like these can potentially last years and it's not something solved in weeks or months,i wouldn't hold my breath on that one...Just me though. |
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#59 | |||
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Registered User
Join Date: Jul 2003
Posts: 1,526
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CUDA--->Yup,closed standard. AA for UE3 games----> i can force that thru the control panel anyhow,so you're BS'ing there. TWIMTBP--->Funny you mention a marketing and developer support program as added value for end users,since there's actually been cases where TWIMTBP games actually performing better with ATI hardware....Not all of them,but a few... ![]() Optimus is the only one that's cool,but that applies to notebook users,not enthusiasts having the most powerfull graphics cards on the market,even 2~3 of them in SLI or crossfire rigs Quote:
Ah so much talk and still nothing delivered in actual products on retail shelves,and all guys like you can say is "wait a little longer,it'll be wonderfull" till the end of time itself...You do realise that if Fermi doesn't live up to the hype you're painting it to be,you'll bee flamed to hell and and back for it,repeatedly. At least i talk about products i already own,and guess what,in 2 days time,i'll be playing battlefield bad company,in DX11 mode and using 3 displays,while you'll be still dreaming in technicolor about Fermi's release and supposed dominance...Something to think about right there. |
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#60 | |
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CUBE
Join Date: Jan 2003
Location: PA, USA
Posts: 18,844
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Physx is used for dynamic effects. Nothing that BFBC2 does has anything to do with what Physx does. If you're going to LOL at me you should at least make an attempt to understand what I'm talking about. Uninformed trolling posts like these are the main reason I stay out of GPU discussions in the weeks leading up to a major GPU release.
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