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Teddy – thank you for your advices. As you said, every card seems to be different. Here are my new results: 2x X5550 @ 2.67ghz, 48GB RAM, GTX Titan @ stock speed = 4:16 min 2x X5550 @ 2.67ghz, 48GB RAM, GTX Titan OC @ 1110mhz = 3:56 min Now it renders 20 secs faster. ;-) I changed the GPU clock offset to +100 MHz and left the fan speed checkbox on ‚auto‘. Any other changes (fan speed @ 75% or higher, higher GPU clock offset, higher mem clock offset) led to slower rendering times. Here are my EVGA Precision X settings: Power Target: 100% (default) Temp Target: 80° (default) GPU clock offset: +100 MHz (default = 0) GPU clock offset: +0 MHz (default) Fan Speed: Auto (default) Voltage & Tweaks: default From:
After Effects Mail List [mailto:AE-List@media-motion.tv] On Behalf Of
Teddy Gage Rodrigo -
I'm using Asus GPU tweak because the card was from Asus but the process should be the same. I'd highly recommend grabbing GPU-Z
http://www.techpowerup.com/gpuz/ and switching to watch the sensors tab while overclocking. I find the manufacturer's monitoring tools to be lacking. Then I'd load up the AE benchmark file I posted in the beginning
of this thread to test the tweaking. So I discovered two very important things when doing this - fan speed is critical for OC on the titan, because the card monitors its own temp separate from the OC interface, and 2) Don't touch the memory clock
or voltage settings. At all. When first overclocking I'd notice that as soon as temps hit 75c+ the card would throttle down. Then I loaded up GPUZ and saw that happen in real time, the clock speed would jump between 640 and 900 mhz seemingly at random. This
was when I had been playing with the min. voltage and memory clock. So first set the fan speed to manual and bump it to 65-75% fan speed. apply setting and watch the temps drop. Instead of thinking like an old card, where you are giving it explicit instruction to OC, you have
to think of giving the Titan "suggestions" - you provide optimal conditions for it to overclock itself! It has very intelligent heat and voltage regulators outside of the user's control. So after you give it the thermal overhead by forcing the fan faster, keep increasing the GPU clock in increments of say, 20
mhz. Now because this not an "explicit" speed for the clock to run at, you can push this pretty far. After increasing fan speed I got the boost clock to 1110 mhz, and very stable. The card set its own voltage to around 1050mV. No fluctuations in clock speed
while rendering in AE. This killed the benchmark at 3:40, my fastest time ever. Watch the clock speed in GPU-Z to verify it's staying pegged.
I'd love to see your results. Every card is different so you may have to play around with it.
On Wed, May 15, 2013 at 3:16 AM, Rodrigo Olmos | ANIMA RES GmbH <rodrigo.olmos@animares.com> wrote: Hi Teddy, I have had the same experience. My OC-settings led to slower renders. Do you use ‘EVGA Precision X’ for overclocking? >
If anyone wants to know more I'd be happy to share. Yes, pleeease. ;-) >
But so far, I'm very impressed with the Titan's performance in AE, c4d and maya. Same here with AE, 3ds max and mudbox. -rodrigo From: After Effects Mail List [mailto:AE-List@media-motion.tv]
On Behalf Of Teddy Gage Sent: Wednesday, Mai 15, 2013 04:08
Subject: Re: [AE] [OT] yet another graphics cards thread - Titan raytracing
benchmarks I just got a GTX Titan and wanted to post my numbers. I had a very interesting experience overclocking the titan. It does not behave like any other card. The card itself decides
most variables. I needed to have GPU-Z open to figure out what was going on; initially, when overclocking, I was getting SLOWER renders than at "stock speed." this is because the hardware manages boost largely by itself at "stock" and actually does quite a
good job at it. You need to tweak very specifically to get a stable OC. If anyone wants to know more I'd be happy to share. But so far, I'm very impressed with the Titan's performance in AE, c4d and maya. Especially when factoring in a) it is a single-gpu
solution b) 6GB RAM more than any consumer card and c) low power and heat for its class.
On Wed, Apr 24, 2013 at 11:31 AM, Rodrigo Olmos | ANIMA RES GmbH <rodrigo.olmos@animares.com> wrote: You are welcome ;-) -rodrigo . From: After
Effects Mail List [mailto:AE-List@media-motion.tv]
On Behalf Of rendernyc
Subject:
Re: [AE] [OT] yet another graphics cards thread - Titan raytracing benchmarks On Wed, Apr 24, 2013 at 10:46 AM, Rodrigo Olmos | ANIMA RES GmbH <rodrigo.olmos@animares.com> wrote: I have following results: robot4JS.aep:
Time 00:10:44 2x X5550 @ 2.67ghz, 48GB RAM, GTX Titan 6GB, 2688 Cuda Cores CS6 11.1 RAYTRACE BENCHMARK.aep:
Time:00:04:16 (new try) 2x X5550 @ 2.67ghz, 48GB RAM, GTX Titan 6GB, 2688 Cuda Cores -rodrigo I have to post the file on my site still but here's a link
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