PDA

View Full Version : x264 video encoding benchmark



graysky
09-09-2007, 04:34 AM
I put together a self-contained x264 video encoding benchmark. Techarp kindly agreed to host the file and results at this (http://www.techarp.com/showarticle.aspx?artno=442&pgno=0) URL.

Basically, you run the test encode and it will report back frames-per-second values for your machine @ it's clock/overclock level. You can run it at your stock settings and at your overclock settings to see how your machine compares to others in the database.

The database is small right now (as of 08-sep), but as you guys report in results, I will populate it. My goal is to have a representative set of data for many different chips and chipsets. Hopefully, we'll get some Penryn and Phenom data when they become available. Also, if anyone out here has some of the high end AMD chips, please contribute. Instructions and the file are at that url.

Also, please report your results here in this thread. I will keep the data at that url to keep things simple.

Thanks all.

graysky
09-15-2007, 03:49 PM
1 week and no takers...?

graysky
09-20-2007, 05:42 PM
As of 20-Sep-2007, we have data on over 100 Intel-based systems and on over 40 AMD-based systems. There are a few trends I picked-up on while browsing through the database. I put them into a single table and color coded them to make them easier to see. If you see a trend I missed, lemme know and I'll add it to the table.

Request: we don't have a single example of a machine that has both WinXP and WinVista on it. If you have a dual-boot setup, it would be cool to see the difference the O/S makes. Another missing trend is a 32-bit O/S vs. the same O/S that's 64-bit.

On to the table:

http://img291.imageshack.us/img291/1554/resultstrendsml9.gif

Yellow: Nearly 1:1 increase by adding an additional processor to a dual-chip MB
Orange: Some operating systems seem to handle x264 more efficiently than others
Red: Insignificant gain by upping the DRAM speed by 50 %
Blue: For the most part, these chips scale in a pretty linear fashion
Green: Tighter/looser memory timings have a pretty insignificant effect
Purple: Keeping the same over-all clock speed using a different combo of multiplier and FSB can give pretty insignificant gains

Again, I only gave this a once-over look; please point out any trends you see that I missed and also don't forgot about the O/S request!

Thanks again to all who contributed!

graysky
10-30-2007, 06:56 PM
Updated the Intel table. It now contains several Yorkfield ES chips including:

Xeon E5330 (Dual board)
Q9550
Q9350

graysky
11-20-2007, 09:11 PM
Updated the tables with another 45 nm chip: the QX9650 -- both at stock levels and @ overclocked to 4.2 GHz! With it, and the others (Xeon E5330 (Dual board), Q9550, and Q9350) there is now data on 4 different 45 nm chips.

One thing that I found striking about these new chips is that they are only marginally faster than their 65 nm counterparts when encoding x264 (about 5-6 % faster with all other factors being equal or close to equal). Have a look at the general trends table for the Kentsfield vs. Yorkfield comparison at the official host (http://www.techarp.com/showarticle.aspx?artno=442&pgno=0).

graysky
02-24-2008, 08:51 AM
First off, thanks to all who contributed data.

24-Feb-2008 - Finally updated the data tables on the x264 benchmark page (http://www.techarp.com/showarticle.aspx?artno=442&pgno=0). They are now html based (not .gif images) which makes my life updating them much easier and I will keep this tables up-to-date daily as people post results. Have a look at the 'Data Tends' table that contains a look at the Phenom quad vs. both Kentfield and Yorkfield quads. There are also some comparisons of Wolfdale dual vs. Conroe dual, and some other good stuff.