애플의 신형 아이폰6 시리즈 리뷰 by www.anandtech.com
좌측면 : volume buttons and mute switch
우측면 : power button and SIM tray
하단 : Lightning connector, speaker, microphone, 3.5mm headset jack
정면 : Touch ID home button / camera
| Apple iPhone 5s | Apple iPhone 6 | Apple iPhone 6 Plus | |
| SoC | Apple A7 | Apple A8 | Apple A8 |
| Display | 4-inch 1136 x 640 LCD | 4.7-inch 1334 x 750 LCD | 5.5-inch 1920 x 1080 LCD |
| WiFi | 2.4/5GHz 802.11a/b/g/n, BT 4.0 | 2.4/5GHz 802.11a/b/g/n/ac, single stream, BT 4.0, NFC | |
| Storage | 16GB/32GB/64GB | 16GB/64GB/128GB | 16GB/64GB/128GB |
| I/O | Lightning connector, 3.5mm headset | ||
| Size / Mass | 123.8 x 58.6 x 7.6 mm, 112 grams | 138.1 x 67 x 6.9 mm, 129 grams | 158.1 x 77.8 x 7.1 mm, 172 grams |
| Camera | 8MP iSight with 1.5µm pixels Rear Facing + True Tone Flash 1.2MP f/2.4 Front Facing | 8MP iSight with 1.5µm pixels Rear Facing + True Tone Flash 1.2MP f/2.2 Front Facing | 8MP iSight with 1.5µm pixels Rear Facing + True Tone Flash + OIS 1.2MP f/2.2 Front Facing |
| Price | $99 (16GB), $149 (32GB) on 2 year contract | $199 (16GB), $299 (64GB), $399 (128GB) on 2 year contract | $299 (16GB), $399 (64GB), $499 (128GB) on 2 year contract |
아이폰 6 스펙.
공통 : A8 프로세서 / 16,64,128GB 스토리지
카메라 : 8MP iSight / 1.2MP f/2.2, 6 플러스는 OIS 탑재
화면 : 아이폰6(4.7-inch 1334 x 750 LCD) / 아이폰6 플러스(5.5-inch 1920 x 1080 LCD)
사이즈 : 아이폰6(138.1 x 67 x 6.9 mm) / 아이폰6 플러스(158.1 x 77.8 x 7.1 mm)
무게 : 아이폰6(129 grams) / 아이폰6 플러스(172 grams)
아이폰6 A8 SOC.
| Apple A8 vs A7 SoCs | ||||
| Apple A8 (2014) | Apple A7 (2013) | |||
| Manufacturing Process | TSMC 20nm HKMG | Samsung 28nm HKMG | ||
| Die Size | 89mm2 | 102mm2 | ||
| Transistor Count | ~2B | "Over 1B" | ||
| CPU | 2 x Apple Enhanced Cyclone ARMv8 64-bit cores | 2 x Apple Cyclone ARMv8 64-bit cores | ||
| GPU | IMG PowerVR GX6450 | IMG PowerVR G6430 | ||
A8 SOC는 TSMC의 20나노 HKMG 공정 적용, 다이 사이즈 감소, ARMv8 기반 64비트 코어, GPU는 PowerVR GX6450 탑재
| Apple SoC Evolution | |||||
| CPU Perf | GPU Perf | Die Size | Transistors | Process | |
| A5 | ~13x | ~20x | 122m2 | <1B | 45nm |
| A6 | ~26x | ~34x | 97mm2 | <1B | 32nm |
| A7 | 40x | 56x | 102mm2 | >1B | 28nm |
| A8 | 50x | 84x | 89mm2 | ~2B | 20nm |
애플 A 시리즈 비교
[ CPU 퍼포먼스 ]
CPU 퍼포먼스 : 최상급 성능
GPU 퍼포먼스 : 상급 성능
낸드 플래시 퍼포먼스 : 시퀀셜은 최고 성능 / 랜덤은 중급 성능
배터리 효율 : 와이파이<E 화웨이 어센드 메이트에 이어 최상급 효율
충전 속도 : HTC M7에 이어 두번째 속도 (아이폰6 플러스)
디스플레이 성능 (MAX BRIGHTNESS) : 아이폰 시리즈 독식
디스플레이 성능 (BLACK LEVELS) : 중상급 성능
디스플레이 성능 (CONTRAST RATIO) : M7에 이어 두번째 성능
디스플레이 성능 (WHITE POINT) : 중급 성능
디스플레이 성능 (GRAYSCALE ACCURACY) : 최고 성능
디스플레이 성능 (SATURATION ACCURACY) : 최고 성능
디스플레이 성능 (GMB ACCURACY) : 최고 성능
카메라 성능 : 최상급 성능
[ 동영상 품질 ]
| Video Encode Settings (Approx.) | ||||||
| iPhone 5s | iPhone 6 | |||||
| 1080p30 | 17 Mbps High Profile H.264 | 17 Mbps High Profile H.264 | ||||
| 1080p60 | - | 27 Mbps High Profile H.264 | ||||
| 720p120 | 27 Mbps High Profile H.264 | 31 Mbps High Profile H.264 | ||||
| 720p240 | - | 42 Mbps High Profile H.264 | ||||
As you can see, there's really not a massive difference in encoding bitrate, at least for the standard video record settings. However, even casual examination shows just how big a difference there is when comparing video from the iPhone 5s to video from the iPhone 6.
While the YouTube compression is likely to make it hard to see whether the iPhone 6 really has better video quality, when viewed at full resolution with Quicktime it seems that there is some level of improvement, but this could be due to the smaller field of view that is used when compared to the iPhone 5s. This tighter FOV also seems to be part of the reason why the stabilization is more effective than before. At various points in the video, it's quite obvious that the iPhone 6 is also benefiting greatly from PDAF as we see seamless transitions throughout the video and consistently better focus while the iPhone 5s is locked from the start and would require multiple taps to refocus the video.
1080p60 brings significant improvements to temporal quality, as capturing fast motion is noticeably more fluid when compared to 1080p30. Video stabilization is also retained, which makes 1080p60 an easy choice when capturing fast-moving objects.
As with the iPhone 5s, the original video on NAND is saved to play back at either 120 or 240 fps, but on the phone and when uploaded to social media the slow motion versions play back certain parts at 30 fps. As far as I can tell, there's relatively little difference in the image quality between the two modes, but this advantage is unlikely to hold when in lower light situations as the frame rate inherently caps the exposure time.
