One of these machines is faster AND has better battery life.. Can you guess which?
In this video we go deep into the world of performance pitting the i7 2.6GHz against the i9 2.9GHz, showing you how it performs in various situations from Cinebench, Xcode, Final Cut Pro, Crypto, Windows, CPU Encoding, Web Browsing, Battery Life and More!
WHERE TO BUY
MacBook Pro i9: http://vtudio.com/a/?a=macbook+pro+i9
MacBook Pro i7: http://vtudio.com/a/?e=macbook+pro+i7
Best MacBook USB-C Hub: http://vtudio.com/a/?e=usb-c+hub+flush
Prime95 CPU Torture Test: https://youtu.be/ym9oVxMNomI
Intel XTU: https://youtu.be/SBgcMHx5AmM
Fan Noise: https://youtu.be/6PjDZ02nXtw
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After 4 consecutive runs, Cinebench clocked in with 990 on the i9 and 942 on the i7, with matching CPU temps and fan noise levels.
In the OpenGL test the i9 clocked in 5-6 frames higher than the i7 in both runs.
My Xcode project on the first clean and compile the i9 clocked in 3% faster coming in at 16.1 seconds and the i7 at 16.6, and on the second rebuild, the i9 came in 6% faster with 12.9 seconds and the i7 at 13.7 seconds.
For larger codebases, the i9 performed 4% faster at ffmpeg from source, clocking in at 273 seconds, with the i7 clocking 284 seconds.
The iOS simulator, well that took only 0.1 seconds longer to launch on the i7 compared to the i9 and using it caused similar heat and fan levels.
Stabilising a 5 minute clip was 6% faster, with the i9 clocking in at 6 minutes and 22 (382) seconds, and the i7 taking 6 minutes and 45 (405) seconds.
Exporting the effects heavy BruceX project was only 2 seconds slower on the i7. So to better test the difference, I duplicated BruceX 10 times and exported that, which took the i9 7 minutes and 37 (457) seconds, and the i7 7 minutes 46 (466) seconds which was still only just a 2% difference.
For the actual export, exporting a short clip at 1080p best quality, the i7 came in 2 seconds behind the i9. These differences compounded when exporting a longer multicam 10 minute clip.
With the i9 taking 26 minutes on the dot and the i7 taking an extra 65 seconds to complete giving the i9 a 4% edge in Final Cut Pro exports.
For vanilla CPU encoding a 4k DJI drone clip, the i9 took 20 minutes and 15 (1220) seconds to encode 4 minutes of footage, and the i7 took 20 minutes and 48 (1248) seconds, giving the i9 a 2% lead. Interestingly though and we'll be looking into this in detail in the battery life section, the i9 was using slightly less power draw to get the faster speeds compared to the i7. On the i9 after a power limit throttle, the i9 drops lower than the i7 does.
Crypto was an easy win for the i9, with 3MBs more L3 cache, it was able to hit 3GHz mining around 200 Hashes a second, with the i7 hitting 2.4GHz mining 120Hashs a second.
Alright, this is an interesting one, I ran a comprehensive set of tasks ranging from compiling and running an Xcode iOS app, to playing YouTube to Final Cut Pro playback and export. In the end the i7 drained 1830 milliAmps, and the i9 drained 1603 milliAmps after half an hours usage. Which is a delta of 227 milliAmps, or 14%. With this load of I'd say heavy professional usage compiling code and video editing on a linear scale, the i7 would last 2 hours and the i9 would get you an extra 18 minutes.
Looking at the reason why, just take a look at the power management of the units. Even during simple YouTube playbacks the i7 had more aggressive peaks than the i9. This trend continued on every task that requires the unit to get into Turbo. As Turbo requires a lot more power than regular base clock speeds, the i7 would eat into the battery for slightly longer, compounding those small percentage performance decrements into worse battery performance.
On gaming, I didn't notice any difference between them as all the games I tried were GPU bound, maybe if you have a beefier eGPU the difference between the i9 and i7 would come into play, but using stock graphics it didn't. Ok, so what's interesting is, when I clocked both units using Intel XTU to use only 30W, the i9 was clocking in 0.1GHz faster than the i7.
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