ATI HD 5870 Scaling Performance: X58 vs P55 Showdown
by Gary Key on September 29, 2009 12:00 PM EST- Posted in
- Motherboards
One of our favorite new games is Batman - Arkham Asylum. We set all options as high as they will go and utilize the games built-in benchmark for our results. Both platforms are just stupid fast when running this game.
The single card results at x8 trails the x16 results by about 1% at stock and 3% when overclocked. Minimum frame rates for the x16 single card results are around 5% better on the P55 platform at stock and 3% when overclocked.
Batman – Arkham Asylum CrossFire Scaling – Average Frame Rates
| ATI HD 5870 CF Scaling | Batman – Arkham Asylum | Batman – Arkham Asylum 4.2GHz |
| Intel Core i7 920 (X58) | 37.7% | 62.6% |
| Intel Core i7 860 (P55) | 37.3% | 61.7% |
At stock and overclocked speeds, both platforms are practically tied when it comes to scaling in average frame rates.
Batman – Arkham Asylum CrossFire Scaling – Minimum Frame Rates
| ATI HD 5870 CF Scaling | Batman – Arkham Asylum | Batman – Arkham Asylum 4.2GHz |
| Intel Core i7 920 (X58) | 2.1% | 34.9% |
| Intel Core i7 860 (P55) | 7.1% | 33.9% |
Minimum frame rates favor the P55 by 6% and scaling favors the P55 by 5% in our stock results, while the X58 is slightly ahead in the overclocking test.
Power Consumption
Both systems have all power management features enabled and we utilize the Balanced Power option in Windows 7. Our 4.2GHz overclock setting has the Core i7 860 VCore offset option enabled with an ending voltage of 1.3875V. VTT is set to 1.310V, CPU PLL at 1.80V, and VDimm at 1.62V. The Core i7 920 offset is enabled for a final VCore reading of 1.335V. VTT is set to 1.375V, CPU PLL at 1.86V, and VDimm at 1.65V.
Idle power is Lynnfield's biggest ally and the Radeon HD 5870 plays well here. Even overclocked to 4.2GHz with a pair of 5870s, Lynnfield uses less power than a single 5870 on an i7 920. Bloomfield runs at a 12x multiplier at idle while Lynnfield runs at 9x. Bloomfield also likes to ramp up VTT voltage in a hurry compared to Lynnfield, the result is nearly zero impact at idle power consumption but when Bloomfield is overclocked, the platform just consumes more power thanks to additional circuitry.
Under load, once again, there's virtually no impact from CPU overclocking on Lynnfield compared to Bloomfield. At stock frequencies however, the GPU power dominates and thus there's less than a 10% power difference between X58 and 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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