NVIDIA's PhysX: Performance and Status Report - Part 2

Rob Williams · 08-06-2008, 10:47 AM

The time is almost here... NVIDIA will be unleashing the new drivers to enable PhysX support on all 8, 9 and GTX-series of GPUs. We've taken a hard look at the new driver, and also the new techdemos that are part of NVIDIA's new 'PhysX Pack #1'.

It took a little longer than expected, but NVIDIA is soon to unveil new drivers that will open up PhysX support on all 8, 9 and GTX-series of GPUs. We've decided to follow-up on our previous article and see where PhysX stands today, and also pit seven GPUs against the new drivers.

Read the article, then discuss it!

08-07-2008, 03:58 PM

I would like to know how SLI may affect performance? Any thoughts?

Rob Williams · 08-07-2008, 04:03 PM

Because of the time-constraints on this article (the entire article was completed in ~13 hours), I was only able to tackle so much. I didn't have an SLI-capable motherboard hooked up in order to conduct that kind of testing, but there will be such testing in the third article, without question.

08-07-2008, 10:38 PM

Re: SLI - (from my memory of CUDA documentation) CUDA is essentially unaffected by SLI. That is, when SLI is active, CUDA sees only one device. If it isn't active, it sees two, and can thus use double its ability to compute - SLI is a very low-level fake-out, I recall reading. I'm guessing turning SLI on and off will have non-trivial effects on this PhysX stuff.

08-07-2008, 03:58 PM	#2
Mazgazine1 Guest Poster Posts: n/a	Very exciting stuff I would like to know how SLI may affect performance? Any thoughts?

08-07-2008, 04:03 PM	#3
Rob Williams Editor-in-Chief Join Date: Jan 2005 Location: Atlantic Canada Posts: 13,231	Because of the time-constraints on this article (the entire article was completed in ~13 hours), I was only able to tackle so much. I didn't have an SLI-capable motherboard hooked up in order to conduct that kind of testing, but there will be such testing in the third article, without question. __________________ Intel Core i7-990X EE @ 3.43GHz, GIGABYTE X58A-UD5, Kingston 12GB DDR3-1333, NVIDIA GeForce GTX 680 2GB Kingston HyperX 3K 240GB SSD, WD VR 1TB, WD 2TB, Seagate 2TB, LG BD-ROM, ASUS DVD-RW, Corsair 1000HX, Corsair H60 Cooler Corsair 800D, Dell 2408WFP 24", ASUS Xonar Essence STX, Gentoo (KDE 4.10, 3.7 Kernel) "Take care to get what you like, or you will be forced to like what you get!" - H.P. Baxxter <Toad772> I don't always drink alcohol, but when I do, I take it too far.

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08-06-2008, 10:47 AM	#1
Rob Williams Editor-in-Chief Join Date: Jan 2005 Location: Atlantic Canada Posts: 13,231	NVIDIA's PhysX: Performance and Status Report - Part 2 The time is almost here... NVIDIA will be unleashing the new drivers to enable PhysX support on all 8, 9 and GTX-series of GPUs. We've taken a hard look at the new driver, and also the new techdemos that are part of NVIDIA's new 'PhysX Pack #1'. It took a little longer than expected, but NVIDIA is soon to unveil new drivers that will open up PhysX support on all 8, 9 and GTX-series of GPUs. We've decided to follow-up on our previous article and see where PhysX stands today, and also pit seven GPUs against the new drivers. Read the article, then discuss it! __________________ Intel Core i7-990X EE @ 3.43GHz, GIGABYTE X58A-UD5, Kingston 12GB DDR3-1333, NVIDIA GeForce GTX 680 2GB Kingston HyperX 3K 240GB SSD, WD VR 1TB, WD 2TB, Seagate 2TB, LG BD-ROM, ASUS DVD-RW, Corsair 1000HX, Corsair H60 Cooler Corsair 800D, Dell 2408WFP 24", ASUS Xonar Essence STX, Gentoo (KDE 4.10, 3.7 Kernel) "Take care to get what you like, or you will be forced to like what you get!" - H.P. Baxxter <Toad772> I don't always drink alcohol, but when I do, I take it too far.

08-07-2008, 10:38 PM	#4
Unregistered Guest Poster Posts: n/a	Re: SLI - (from my memory of CUDA documentation) CUDA is essentially unaffected by SLI. That is, when SLI is active, CUDA sees only one device. If it isn't active, it sees two, and can thus use double its ability to compute - SLI is a very low-level fake-out, I recall reading. I'm guessing turning SLI on and off will have non-trivial effects on this PhysX stuff.