Quad Core vs Dual Core: Q9550S vs. E8600, Part III – CPU Scaling with CrossFire
Half-Life 2: Lost Coast
Half-Life 2 is still a popular game and it is the oldest game we review for this series. Half-Life 2: Lost Coast is an additional level for this 2004 game. Lost Coast was released October, 2005 as a free download to all purchasers of Half-Life 2. Lost Coast was developed as a playable tech demo, intended to showcase the newly-added high definition range lighting – HDR – features of the Source Engine. Lost Coast features some very minor storyline details that were scrapped from Half-Life 2. A flyby of this level is played during the HL2 video stress test and it is very repeatable and quite accurate. All in-game settings are maxed out, including 4xAA/16xAF.
Now at 1650×1080 resolution:
Although all of our configurations breeze through this benchmark, quad-core has a notable advantage over dual when they are clocked about the same. You may notice that the game’s 300 FPS cap will also influence the average scores, as many setups are hitting that ceiling. But no matter how you look at it, quad wins.
Great article. Here’s what I found most interesting
If we just look at the minimum framerates for the chips are similar clockspeeds (Q9550s @ 3.4 vs E8600 @ 3.33 and Q9550s @ 4.0 vs E8600 @ 4.0) the quad core comes out on top the majority of the time.
For the two-way Xfire tests, the Q9550 (at similar clockspeed to) beats the E8600’s minimum framerates in COD4, UT3, Lost Planet, HL2: LC, FEAR, ET: QW, WiC, FC2, and PT Boats. The two chips, for the most part, tie in the games Stalker, Crysis, and X3. The only game where the quad loses is Call of Juarez.
When we look at the three-way XFire tests, the results are basically the same except Lost Planet and PT Boats moves from the “win” category to the “tie” category for the quad core.
I wonder what’s up with the Call of Juarez results. Even with the chips at the same clock speed, the quad core loses fairly significantly. At 4.00 GHz, the quad’s minimum framerate is 31 while the dual’s is 42.
I wondered about CoJ as i was testing and repeated those benchmarks many, many times; far more than with any other of my tests. I would say that some of it is probably partly because of the Cat 9-2 drivers. If you look back on this benchmark to our September testing with Cat 8-1 all the way through Cat 8-12hotfix, there is definitely some variance with multi-GPU performance.
So let me theorize that there appears to be a ‘hitch’ in CoJ – you can actually watch it “stutter” in a couple of places – that the slower clocked Quad simply cannot overcome that appear to really skew the bottom [and thus average and max] framerates. It exaggerates what happens when you actually play CoJ, similar to my old STALKER benches that had way too high of a maximum as they panned the sky. The CoJ benchmark was also never updated, although the game was. That makes it somewhat flawed in my opinion, as the vendors are continuing to optimize for the game, not for the old benchmark. In the future, it will not be so important – as for example, in my current benching, “Vista 64 vs. Vista32-bit”, my Q9550s is at 4.0Ghz where this is not observed quite so much.
It also means that I am considering making a custom timedemo from the latest patched CoJ. I wish Techland would update theirs. Or maybe I will wait for “CoJ 2, Bound in Blood” and use that new benchmark instead. I am looking forward to its release, soon.
http://www.nugadgets.com/products/ProductDetails/68514Call_of_Juarez_2_PC.1496901.1.html
they say 1-3 weeks, but that is not official. The trailer says, “Summer”.
Here is a trailer on You.Tube:
http://www.youtube.com/watch?v=-CZi_FKsyPE
You also need to realize that CrossFireX-3 is still imperfect; you can see it’s scaling is still not “bang-for-buck”. Clearly there has been drastic improvements overall in the CFX-3 Catalyst drivers over the last 6 months, but there is plenty of room for more.
Yep, I can’t wait to see how multi-core CPUs and GPUs take off this year. Check out the following results for the new Tom Clancy game:
http://www.pcgameshardware.com/aid,679029/Tom-Clancys-HAWX-Benchmark-review-with-15-CPUs/Practice/
Those were some of the most striking results I’ve come across yet – even more striking than GTA4.
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