We also managed to run several synthetic benchmark tests on the newly announced WP smartphones. We were eager to find out how those 1.4Ghz Snapdragon chipsets fare and it turned out that they did quite well.
To put their performance into perspective we threw in the HTC Radar and an HTC 7 Mozart running the Mango update into the mix. The Radar has a chipset very similar to the two Lumia smartphones, but its Scorpion CPU is clocked at 1GHz. It showed us what kind of an advantage the extra 400MHz of clock speeds actually bring. The 7 Mozart not only has a slower CPU than the two Nokia smartphones, but also a weaker GPU (Adreno 200, instead of Adreno 205) so we could see how much of a difference that makes.
We started with BrowserMark and it was Nokia Lumia 710 that drew first blood, scoring 32,854 points (higher is better here). The Lumia 800 came in second with 32,594 points, but for all purposes practical the performance of the two was identical. The HTC Radar came in third and HTC 7 Mozart ended up last with the margin of their defeat being about what the specs difference suggests.
Nokia 800 Lumia evened the score by winning the second benchmark, Microsoft's FishIE Tank. It delivered 53 fps compared to 50fps of the Lumia 710. The HTC Radar was some way behind with 38fps, while the less powerful GPU of the 7 Mozart only allowed it to do 30fps.
The final test was Celtikcane's JSBenchmark and the Nokia Lumia 800 made it three wins out of four. The Lumia 710 didn't disappoint either and came a really close second, while the Radar placed third 25% off the pace. The 7 Mozart was nearly two times slower than the leader.
All in all, the 1.4GHz Scorpions inside the two Nokia smartphones give about as big a processing power boost (compared to the 1GHz options) as you'd expect.