ATI HD 5870 Scaling Performance: X58 vs P55 Showdown
by Gary Key on September 29, 2009 12:00 PM EST- Posted in
- Motherboards
FarCry 2
We utilize the Ranch Small demo file along with the Playback Action demo to see the differences between GPU and CPU centric benchmarks. The Ranch demo is GPU centric while the Playback demo tends to be CPU centric. We run each benchmark five times and report the median score.
First off, FarCry 2 has always performed extremely well on the X58 chipset compared to other chipsets with the ATI video cards. This game responds very well to PCIe bandwidth, something the X58 has in droves. The stock HD 5870 single card x8 configuration is 6% slower in average frame rates and 10% slower in minimum frame rates in this particular benchmark. Even the 4.2GHz single card result is slower than either the stock P55 or X58 setups.
The stock single card HD 5870 P55 platform is 3% slower than the X58 even with a 100MHz processor advantage in turbo mode. At 4.2GHz, both platforms are about even although minimum frame rates are about 4% better on X58. However, even with this benchmark advantage, there was no difference in actual game play, especially considering minimum frame rates are above 70fps in each instance.
The P55 results improve slightly as we move to a more CPU centric benchmark. The stock HD 5870 single card x8 configuration is only 2% slower in average frame rates and only 1% in the overclocked results. Comparing single card results between the P55 and X58, we see a 2% difference in favor of the X58 at stock speeds while at 4.2GHz the P55 finishes slightly ahead of the X58.
The pertinent data for CrossFire scaling is in the tables below. What we are looking for is the percentage speedup going from one to two HD 5870s on X58 and P55. In theory, X58 should have improved percentages because each GPU gets 16 PCIe 2.0 lanes while Lynnfield only provides 8 PCIe 2.0 lanes per GPU.
FarCry 2 CrossFire Scaling – Average Frame Rates
| ATI HD 5870 CF Scaling | FarCry 2 – Ranch Small | FarCry 2 – Playback Action | FarCry 2 – Ranch Small 4.2GHz | FarCry 2 – Playback 4.2GHz |
| Intel Core i7 920 (X58) | 66.8% | 9% | 81.8% | 42.5% |
| Intel Core i7 860 (P55) | 59.8% | 10.6% | 75.8% | 44.4% |
Based on our single card results, there are not a lot of surprises here. At stock speeds, the X58 has a 7% scaling advantage over the P55 and 6% when overclocked in the GPU centric Ranch demo. In the Playback Action benchmark, the results favor the P55 by almost 2%.
FarCry 2 CrossFire Scaling – Minimum Frame Rates
| ATI HD 5870 CF Scaling | FarCry 2 – Ranch Small | FarCry 2 – Playback Action | FarCry 2 – Ranch Small 4.2GHz | FarCry 2 – Playback 4.2GHz |
| Intel Core i7 920 (X58) | 41.1% | 3.6% | 77.9% | 30.5% |
| Intel Core i7 860 (P55) | 32.4% | 3.6% | 78.4% | 28.3% |
Minimum frame rates and scaling heavily favor the X58 in our stock clock speed results using the Ranch demo. Although frame rates still favor the X58 in this demo when overclocked, the scaling on the P55 is slightly better. The stock results in the Playback Action demo are a dead heat with a 2% advantage to the X58 when overclocked.
When it came to actual game play, there were no differences between either platform in the game. In fact, it was very difficult to discern which system was being utilized. The key giveaway was the foot warming heat coming from our case with the X58 overclocked. Our ambient temperature in the test room rose 2.1C over the course of testing with the X58 installed compared to 0.7C with the P55.
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DigitalFreak - Tuesday, September 29, 2009 - link
I was being sarcastic, but whatever.There's not really a point in putting the 5850 through this test. It's not as powerful as the 5870, so the difference between the X58 and P55 would be even less.
jordanclock - Tuesday, September 29, 2009 - link
I think his point was that while it's great to see performance of an ultra-high end setup, we're more interested in seeing a review of the more affordable HD5850.goinginstyle - Tuesday, September 29, 2009 - link
I was being sarcastic. I know this had to take a lot of time and a lot of us asked for it. My statement did not go over the right way. I already sent an email to Gary stating as such and hoping they had banned the Toms guy by now but it appears they are letting him trash another article.szzcy - Sunday, June 10, 2012 - link
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szzcy - Sunday, June 10, 2012 - link
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