Qualcomm Snapdragon 665 vs Mediatek MT6737 vs Qualcomm Snapdragon 660

Qualcomm Snapdragon 665

The Qualcomm Snapdragon 665 (SM6125) is a fast mid-range ARM-based SoC largely found on Android tablets and smartphones. It features 8 Kryo 260 cores (custom design, 64-Bit capable) that are divided in two clusters. A fast cluster of four cores with up to 2 GHz (Kryo 260 Gold - Cortex-A73 derivate) and a power saving efficiency cluster with up to 1.8 GHz (Kryo 260 Silver - Cortex A53 derivate). Both clusters can also be used together.

In addition to the 8 CPU cores, the SoC integrates a mid range Adreno 610 GPU with a LPDDR4 memory controller (dual-channel)  and supports Wi-Fi (802.11ac + MIMO, max. 867 Mbps), Bluetooth 5, and LTE (X12 LTE modem with up to 600 Mbps download and 150 Mbps upload).

Power Consumption

Thanks to the new 11 nm LPP process, the energy efficiency should be quite good.

Mediatek MT6737

The MediaTek MT6737 is a 64-bit ARM-based SoC announced in 2016 primarily designed for smartphones (mainly Android devices). It is manufactured in a 28 nm process and consists of four CPU cores based on the 64-bit Cortex-A53 architecture clocked at up to 1.35 GHz (MT6737T up to 1.5 GHz). The GPU is an ARM Mali-720 MP2. It integrates a Cat.4 LTE modem with CDMA200 as well as a video de- and encoder for 1080p30 videos (H.264 and H.265).

Processor

The Cortex-A53 is the successor to the popular Cortex-A7 design. In addition to the jump from 32-bit to 64-bit architecture (ARMv8 ISA) to address more than 4 GB of memory, the new design offers better branch prediction and higher performance-to-power ratio that rivals the Cortex-A9. The four cores of the MT6737 are clocked at up to 1.35 GHz and are roughly on par with the Snapdragon 410 (4x Cortex-A53 at 1.2 to 1.4 GHz). The processor is fit for common tasks like browsing and running light applications.

Graphics

The integrated single-core Mali-T720 is an entry-level GPU clocked between 550-650 MHz for the MT6737 (or 600 for the MT6737T). Most Android games will play at acceptable frame rates on low or medium resolutions and quality.

Features

Besides CPU and GPU, the MT6737 SoC also integrates a memory controller (1x LPDDR2/3 640 MHz / 733 MHz for MT6737T), multiple radios (WLAN, Bluetooth, GPS), and a cellular modem (GSM, UMTS, GPRS, HSPA+, HSUPA, TD-SCDMA, EVDO, and LTE Cat 4). Its integrated video engine allows for 1080p playback at 30 FPS. Cameras are supported up to 13 MP.

Qualcomm Snapdragon 660

The Qualcomm Snapdragon 660 (SD660) is a fast mid-range ARM-based SoC largely found on Android tablets and smartphones. Announced in mid 2017, the SD660 is the successor to the Snapdragon 625. It features 8 Kryo 260 cores (custom design, 64-Bit capable) that are divided in two clusters. A fast cluster of four cores with up to 2.2 GHz and a power saving efficiency cluster with up to 1.8 GHz. Both clusters can also used together.

In addition to the 8 CPU cores, the SoC integrates a mid range Adreno 512 GPU with a LPDDR4 memory controller (dual-channel 1866 MHz)  and supports Wi-Fi (802.11ac + MIMO, max. 867 Mbps), Bluetooth 5, and LTE (X12 LTE modem with up to 600 Mbps download and 150 Mbps upload).

Performance

In Benchmarks of the Oppo R11, the CPU part of the Snapdragon SD660 performs between former high end Socs like the Snapdragon 821 in the Pixel XL and the Snapdragon 835. The graphics performance is however much lower, as the Adreno 512 is only a slight upgrade of the older Adreno 510 (due to the higher clock speed).

CPU

The Snapdragon 660 is based on a similar concept as ARM's big.LITTLE, which combines a low power CPU cluster (2x Kyro clocked at up to 1.8 GHz) and a performance CPU cluster (2x Kyro clocked at up to 2.2 GHz). The clock speed of each cluster can be individually adjusted (but not per core) and the lowest clock speed is 310 MHz (unverified).

Power Consumption

Thanks to the new 14 nm process, the energy efficiency has been improved noticeably compared to its 20 nm predecessors.