Investigations into Athlon X2 Overclocking
by Jarred Walton on December 21, 2005 12:00 PM EST- Posted in
- CPUs
Half-Life 2 Performance
Our last game is Half-Life 2. The Source engine will be used in a variety of upcoming games - most of them first-person shooters, of course - so it remains an important benchmark. High dynamic range lighting effects may reduce the overall performance, but I'm not convinced that HDR is the panacea that developers are pushing. That's a topic for another day, however.
Half-Life 2 is one of the few titles that remains largely processor limited. Performance scaling is about 35% for all of the resolutions tested, with the exception of 1600x1200 and above - particularly with anti-aliasing enabled. At most resolutions, value RAM with overclocking can be about 6% slower, worst-case. Note that if you're not overclocking, value RAM is only a couple of percent slower.
Our last game is Half-Life 2. The Source engine will be used in a variety of upcoming games - most of them first-person shooters, of course - so it remains an important benchmark. High dynamic range lighting effects may reduce the overall performance, but I'm not convinced that HDR is the panacea that developers are pushing. That's a topic for another day, however.
Half-Life 2 is one of the few titles that remains largely processor limited. Performance scaling is about 35% for all of the resolutions tested, with the exception of 1600x1200 and above - particularly with anti-aliasing enabled. At most resolutions, value RAM with overclocking can be about 6% slower, worst-case. Note that if you're not overclocking, value RAM is only a couple of percent slower.
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TheHolyLancer - Wednesday, December 21, 2005 - link
i that since this is an OC thread, they should have used a DFI NF4 Ultra-D or a Expert, they have a 4V jumper that allows you to take DRAM voltage into 4 V (i hope no one does though)JarredWalton - Thursday, December 22, 2005 - link
The higher voltages would have helped the VX RAM a bit. I may shift to a LanParty SLI-DR for the cooling test... or at least try it at some point to see how much of a difference it makes in performance.KingofCamelot - Wednesday, December 21, 2005 - link
I noticed that the BF2 demo file for v1.12 did not work. The bf2bench.demo file needs to be changed for it to work. The bf2bench.demo file can be opened in Notepad, and the following changes need to be made.These lines:
demo.camerafile mods\bf2\Demos\jw112.bf2cam
demo.demofile mods\bf2\Demos\jw112.bf2demo
Need to be changed to:
demo.camerafile mods\bf2\Demos\jwanandtech112.bf2cam
demo.demofile mods\bf2\Demos\jwanandtech112.bf2demo
JarredWalton - Thursday, December 22, 2005 - link
Thanks! I've corrected the file and uploaded the new version.--Jarred Walton
tayhimself - Thursday, December 22, 2005 - link
Hey Jared,This was a very well written article. You were thorough with the benchmarks almost to a fault. I liked your introductory and ending commentary. Your first article was just as good.
Props!
sxr7171 - Thursday, December 22, 2005 - link
Agreed. This was a quality job for sure and the questions he raises at the end are very pertinent. I'm sure he'll come up with the answers.ElFenix - Wednesday, December 21, 2005 - link
i assume you used the stock heat sink/fan unit?JarredWalton - Wednesday, December 21, 2005 - link
Er, sorry I forgot to mention that. I used an XP-90 with a 3000 RPM 92mm fan (generic fan). I'll make a note of that, since that's important information. The followup looking at cooling options will use a retail HSF as well as the XP-90, an Asetek MicroChill, and an Asetek WaterChill. (Why Asetek? Because they asked me to review their two products.)Furen - Wednesday, December 21, 2005 - link
How come the graphs arent zeroed? I suppose it'd be pretty much a bunch of overlapping straight lines if they were but having a graph that shows framerate from 63.5 to 65.0 is not much better.JustAnAverageGuy - Wednesday, December 21, 2005 - link
Yeah, the graphs could be a bit misleading unless you look at what the lines actually represent.The difference between the OCZ PC4800 and everything else looks huge in the http://images.anandtech.com/reviews/cpu/amd/athlon...">Doom 3 graph @ 1600x1200 4xAA, but if you actually look at the lines, the difference is less than 1 frame per second.