Return-Path: Received: from mail-yx0-f169.google.com ([209.85.213.169] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 4704418 for AE-List@media-motion.tv; Thu, 03 May 2012 17:26:14 +0200 Received: by yenm8 with SMTP id m8so1937088yen.28 for ; Thu, 03 May 2012 08:27:37 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:x-gm-message-state; bh=b9QoBjCH1BDKRwae0EzQTN+0LOktH77pAx3JaLkfUi4=; b=GHGWwiov6wvowP5z/3ASWsR01Z57U+40Giv7LjVueKHWanUJlNX7d8H9aEqr9wgKi3 /xZtF4Y+Hm41JRtPTzrxZMH0puFYavV1xaFQylmziiDjwRlbqj5bvLW2rH8XxodpHQci NFNpxbZPWVDgfDOWweFYwBPueopNp6SWozGywtR2BTMWlmVGgUcSdmngdwN8Xqn57lY1 MUPrmdamR38a8AWlSZqVYW1I/5uakmiZT/I7Z0DTqJ1PUTiENhKoVlscChf7wRbx4yYh kbRwJwkI4aFrpHpPZDSW212Cg7pBlnV/PhFTgzgcXbFxh3qzfKpxeLMM1JqJFilla9+F cKbQ== MIME-Version: 1.0 Received: by 10.236.136.8 with SMTP id v8mr3473074yhi.101.1336058857583; Thu, 03 May 2012 08:27:37 -0700 (PDT) Received: by 10.236.165.72 with HTTP; Thu, 3 May 2012 08:27:37 -0700 (PDT) In-Reply-To: References: Date: Thu, 3 May 2012 10:27:37 -0500 Message-ID: Subject: Re: [AE] Thunderbolt and Mac Pro slot speeds From: Brian Higgins To: After Effects Mail List Content-Type: multipart/alternative; boundary=20cf303dd5a49af63a04bf23718f X-Gm-Message-State: ALoCoQkSY3v5pmjkQWDW1hey6Bq0Cl6wYr8ouePoZ8551ByvTHpg9BsM3pjkhK7PBKJywfeSDnFh --20cf303dd5a49af63a04bf23718f Content-Type: text/plain; charset=ISO-8859-1 This is a really great test. Thanks much for putting the work in and posting your results for the community! The memory bandwidth results are interesting. I'd expected thunderbolt to be a big bottleneck for doing Resolve work, but if uncompressed HD is around 240MB/sec, 740MB/sec is certainly enough to have a stream going in and a stream coming out. You'd probably feel the hit if you tried to do stereo 4K work, but that's too much to expect out of a game card anyway. Thanks again! -bH On Thu, May 3, 2012 at 8:36 AM, Dave Bittner wrote: > I was curious about how much a real-world difference it makes, putting a > high performance graphics card in a 16 lane slot vs. a four lane slot, and > how this information could inform the possibilities of using Thunderbolt > for external graphics cards. > > So I spent a couple of hours swapping graphics cards in a Mac Pro tower, > running some benchmarks, and I wrote up what I found - > > > http://www.pixelworkshop.com/2012/05/02/slot-card-racing-mac-pro-gpu-speed-tests/ > > Interested to know what you all think. > > Dave > > > > > Dave Bittner - Pixel Workshop Inc. > www.pixelworkshop.com > 410.381.8555 > Twitter @bittner > > > > > +---End of message---+ > To unsubscribe send any message to > -- brian higgins | senior vfx artist Sol Design 312.706.5500 higgins@soldesignfx.com soldesignfx.com --20cf303dd5a49af63a04bf23718f Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable This is a really great test.=A0 Thanks much for putting the work in and pos= ting your results for the community!=A0=A0 The memory bandwidth results are= interesting.=A0 I'd expected thunderbolt to be a big bottleneck for do= ing Resolve work, but if uncompressed HD is around 240MB/sec, 740MB/sec is = certainly enough to have a stream going in and a stream coming out.=A0 You&= #39;d probably feel the hit if you tried to do stereo 4K work, but that'= ;s too much to expect out of a game card anyway.=A0 Thanks again!

-bH


On Thu, May 3, 2012 at 8:36 A= M, Dave Bittner <dave@pixelworkshop.com> wrote:
I was curious about how much a real-world difference it makes, putting a hi= gh performance graphics card in a 16 lane slot vs. a four lane slot, and ho= w this information could inform the possibilities of using Thunderbolt for = external graphics cards.

So I spent a couple of hours swapping graphics cards in a Mac Pro tower, ru= nning some benchmarks, and I wrote up what I found =A0-

http://www.pixelworkshop.com/2012/05/0= 2/slot-card-racing-mac-pro-gpu-speed-tests/

Interested to know what you all think.

Dave




Dave Bittner - Pixel Workshop Inc.
www.pixelworksho= p.com
410.381.8555
Twitter @bittner




+---End of message---+
To unsubscribe send any message to <ae-list-off@media-motion.tv>



--
brian higgins | senior vfx artist
Sol =A0Design



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