On Fri, May 4, 2012 at 8:58 PM, Oliver Stueker <[email protected]> wrote:
> Hi all, > > This week Nvidia has also announced the GeForce GTX 690 with two > Kepler Chips [1]. > That will make a total of 3072 CUDA cores @ 915MHz to 1019MHz and will > perform like two GTX 680s in SLI mode [2], but more energy efficient. > > I'd really be interested if parallelization would be a bottleneck for > the Kepler chips compared to the Fermi ones. Has anyone already run > some benchmarks on Kepler? > If you stick the GTX 690 into PCi-E 3.0, it should have a performance quite close to 2x GTX 680 on PCI-E 2.0. Don't expect to gain more than 5% from having GTX 680 on PCI-E 2.0 vs PCI-E 3.0. Cheers, -- Szilárd > Best, > Oliver > > > [1] > http://nvidianews.nvidia.com/Releases/NVIDIA-Unveils-GeForce-GTX-690-Dual-Graphics-Card-Combines-World-s-Fastest-Gaming-Performance-With-Sleek-Sexy-Design-7c1.aspx > > [2] http://www.geforce.com/whats-new/articles/article-keynote/ > > On Wed, May 2, 2012 at 10:16 AM, Peter C. Lai <[email protected]> wrote: > > On 2012-05-02 06:13:04PM +0200, Mirco Wahab wrote: > >> Hello Peter, > >> > >> Am 02.05.2012 17:44, schrieb Peter C. Lai: > >> > >> > You can wait for ivy bridge, then stick some Kepler GPUs (nvidia gtx > >> > 680) in it. That should max the performance. asm is pretty much > stagnant > >> > for general purpose procs since core2 came out. > >> > >> Is this true? > >> > >> To my knowledge, the Fermi GPU (GF-110, eg. GTX-580) is > >> a 16 processor (streaming multiprocessor, SM) system, each > >> processor having 32 cores running at 1.5 GHz, and the > >> Kepler-1 (GK-104, eg. GTX-680) an 8 processor system > >> with 192 cores per processor at 1GHz. > >> Because on the Fermi each SM has more L1 cache than > >> each SM on the Kepler-1 and because it might be harder > >> to saturate 192 cores in a compute-scenario, I'd expect > >> the 580 (GF-110) to be significant(?) faster in the > >> next Gromacs (4.6). Maybe somebody tested this already. > >> > >> (Here in Germany, I can by GTX-580/3GB for ~325€ + Tax.) > >> > >> Regards, > >> > >> M. > > > > You might be. I do have a collaborator in France who chooses to use GTX > 580 > > with NAMD and is eschewing the Keplers. I think I saw a bench somewhere > > for Kepler compute; not sure if I saw that much difference (but you will > > be paying the price though). In that case stick with Fermis for now :) > -- > gmx-users mailing list [email protected] > http://lists.gromacs.org/mailman/listinfo/gmx-users > Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/Search before posting! > Please don't post (un)subscribe requests to the list. Use the > www interface or send it to [email protected]. > Can't post? Read http://www.gromacs.org/Support/Mailing_Lists >
-- gmx-users mailing list [email protected] http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to [email protected]. Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
