Core i7 vs. Phenom II X2 vs. X4 scaling performance analysis
FarCry 2
Far Cry 2 uses the name of the original Far Cry but it is not connected to the first game as it brings you a new setting and a new story. Ubisoft created it based on their Dunia Engine. The game setting takes place in an unnamed African country, during an uprising between two rival warring factions. Your mission is to kill “The Jackal”; the Nietzsche-quoting mercenary that arms both sides of the conflict that you are dropped into.
The Far Cry 2 game world is loaded in the background and on the fly to create a completely seamless open world. The Dunia game engine provides good visuals that scale well. The Far Cry 2 design team actually went to Africa to give added realism to this game. One thing to especially note is Far Cry 2’s very realistic fire propagation by their engine that is a far cry from the scripted fire and explosions that we are used to seeing. First we test Far Cry 2 Ranch Short benchmark at 2560×1600 with AI enabled with ultra settings plus 8x
Here we see CrossFired HD 5870s scaling very nicely except in the miniums. We can clearly see that Phenom II 955 X4 beats the 550 X2 across the board at the same clockspeeds so we can see that Far Cry 2 takes advantage of quad-core over dual-core CPUs. However, we see the Phenom II 955 X4 and the Core i7-920 trade blows in the averages and minimums where it counts. Let’s look next at 1920×1200 resolution:
We see much the same thing as we saw at 2560×1600 except now we see the Core i7-920 distinguish itself more from the Phenom II 955 X4. However, there is almost no practical difference playing with either quad-core CPU platform. Underclocking our Phenom dual-core significantly drops the minimum framerates from relatively smooth to below 30 in this Ranch Short benchmark. Let’s move on to 1680×1050 resolution:
Again the Core i7-920 distinguishes itself further from the Phenom II 955 X4 as the resolution is lowered. Our Phenom II 550 X2 has trouble with its minimums with any of our more powerful video card configurations – GTX 480 and HD 5870 CrossFire – when it drops below its stock clocks. Overclocking your CPU will probably make a practical difference for especially dual-core CPUs in Far Cry 2.
Flat-out amazing!!! I’ve never seen anything so epic like this. So, there was not any microstuttering in any of the above games, where the “measured” 40 fps appeared to look more like “perceived” 25 fps? I guess microstuttering is not noticeable if the measured fps is above 70-80, since half of this (45 fps) would still appear to be relatively smooth. Anything below 30 fps becomes really noticeable, so were there ever 40-50 fps instances with 2x 5870 CF that felt like 25fps or so? I’ll take your word for it, if you were actually watching 10,000 hours worth of benchmarking, ha (just kidding, don’t shoot my head off)!
Surprised there are not more comments. For a single video card it does look like a dual core is more than enough. Sure there are a few games that take advantage of four cores, but the fact remains they remain in the minority.
Bobert, I’ve been saying the same thing for months now.
Wow, very thorough and detailed article. It’s one thing to test CPU performance using a single video card, but it must take some brawn to do it for three different video configurations.
There’s so much data here to look at in so many ways. I suppose if you would have included an SLI setup we would then be able to determine how CPU speed affects SLI vs. Crossfire. If I’m looking at this data right, though, it seems Crossfire sees benefits from quad cores more than single video cards do.
Far Cry 2 seems to be a good example of this. Also Far Cry 2 shows interesting relationships between CPU and the GTX 480. The single HD 5870 doesn’t really react to CPU speed and cores the same way dual 5870s and the GTX 480 do. That’s pretty interesting.
So well done. If I only had one suggestion is that I would like to see GTA4 benched, mainly because I own it and good, thorough, and updated benchmarks of it are not easy to come by.:)
Concerning the Far Cry 2 numbers, despite being beaten with faster processors, the HD 5870 paired with the 2.6 dual core is actually outperforming the Crossfire and Nvidia setup. That’s what I find a bit interesting here.
AWESOME REVIEW.
This is EXACTLY what review websites ARE NOT putting out.
A non GPU-bottlenecked review showing how i7 really does have a significant gaming lead over Phenom II.
God you’d be surprised how many AMD fanboys still believe (and spread rumors) that Phenom II is plenty for 5870 crossfire. Psh. Plenty on today’s games maybe, but that is due to the PC gaming community being SNARED by the noob console community and their half a decade old setups.
Ok I’m ranting.
Two Thumbs!!
Raidur means it shows how Phenom II bottlenecks 5870 crossfire.
Everyone knows i7 is faster in games.
PS. I’m not Raidur.
PSS. I’m Raidur.
PSSS. Or am I?
Awesome review GJ.
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