AMD Phenom II X4 955 Black Edition - Video Encoding

By Edward Chester

Reviewed:

Summary

Our Score:

8

Perhaps the next most obvious task for a powerful CPU in a desktop PC is video encoding. Whether it's for editing your family videos or re-encoding your favourite videos to an iPod-friendly format, video encoding is becoming more and more common and so we've used two scenarios for testing video encoding performance.

The first is our age old test of re-encoding a portion of DVD quality MPEG-2 video into the open source Xvid format. This test is a bit long in the tooth as the version of Xvid we use is quite old so not multi-threaded (not to mention the fact that the source footage isn't even HD) but in being so it gives us a very reliable indication of single-core performance.

The next scenario takes a section of 1080p footage, again in MPEG-2 format, and re-encodes it into the h.264 format. This is a much more up to date test as the source material is Full HD and the h.264 codec is about the most advanced video format currently available. We also use the open source converter, AutoMKV, for this task, which fully supports multi-threading.

VirtualDub

AutoMKV

Jmac

April 23, 2009, 7:51 pm

Looks good. FYI all the charts in your review say 810 not 955 Black Ed.

Ed

April 23, 2009, 8:05 pm

Cheers, I think they should all be fixed by now.

Alex.rar

April 23, 2009, 9:27 pm

no conclusion!?





aww :(

Ed

April 23, 2009, 9:33 pm

You're right, we only did a 'verdict' on page 3. My bad. ;)

basicasic

April 24, 2009, 1:18 am

Talk about wanting it on a plate! Overclocking used to be a bit of a black art. Soldering resistors, joining tiny bridges with conductive paint, using the right memory and tinkering with timings and voltages, fiddling with motherboard jumpers, flatting/polishing the cpu heatspreader and huge heatsink, screaming fans, all to get a few extra Mhz. I sweated blood to get a P75 running at 90Mhz on an Asus CUSL2 !





You guys get 3.8Ghz (nearly a 20% overclock) at stock voltage without lifting a finger and moan about it. How hard could it be to raise the voltage 0.1V to see if it would hit 4Ghz? Or more.





Other than that good cpu and great review ;)

Ed

April 24, 2009, 1:40 pm

As I explained, the system was essentially dead after some initial attempts and due to time constraints we weren't able to recover it for another run. Reading around, these will easily hit 3.8 on stock voltages, and are reasonably likely to reach 4 with a bit of extra voltage. Beyond that you need some serious cooling.





Nevertheless, the point I was making was that the 3.2 to 3.8 overclock we achieved was lower than the 2.8 to 3.41 we achieved with the Q9550 (both without changing any voltages) - a CPU that proved to be generally faster despite its lower clock speed. So the overclocking potential of the 955BE has to be taken with a pinch of salt.

andy1001

May 16, 2009, 7:47 pm

I belive there is missclick - should be 6mb L3 cache instead of 2mb on page 1.





May i ask about cooling? Did you use components included in box or add your own cpu cooling? Was thermal paste included in box? What was temperature when oc to 3.8?

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