AMD Phenom II X2 521 vs Qualcomm Snapdragon 678

Let's find out which one of AMD Phenom II X2 521 and Qualcomm Snapdragon 678 is of a more recent generation, and what segment it belongs to.

• Name
  AMD Phenom II X2 521 Qualcomm Snapdragon 678
• Segment
  Desktop / Server Mobile
• Family
  AMD Phenom II Qualcomm Snapdragon
• Generation
  1 7
• CPU group
  AMD Phenom II - 500 Qualcomm Snapdragon 675/678
• Predecessor
  -- Qualcomm Snapdragon 675

In this block we are going to compare AMD Phenom II X2 521 vs Qualcomm Snapdragon 678 by main technical specifications: number of cores and threads, base and maximum frequencies, process technology and cache size. The higher these specifications are, the more powerful your CPU will be.

• Frequency
  3.50 GHz 1.70 GHz
• CPU Cores
  2 8
• Turbo (1 Core)
  No turbo 2.20 GHz
• CPU Threads
  2 8
• Hyperthreading
  No No
• Overclocking
  Yes No
• Core architecture
  normal hybrid (big.LITTLE)
• A core
  -- 2x Kryo 460 Gold
• B core
  -- 6x Kryp 460 Silver

Common specifications for integrated graphics cards in AMD Phenom II X2 521 and Qualcomm Snapdragon 678 along with supported interfaces and connection options. This block has no effect on the final efficiency of the CPU.

• GPU name
  no iGPU Qualcomm Adreno 612
• GPU frequency
  0.85 GHz
• GPU (Turbo)
  No turbo 0.85 GHz
• Generation
  6
• DirectX Version
  12.1
• Technology
  11 nm

Let's compare the support of video codecs between AMD Phenom II X2 521 and Qualcomm Snapdragon 678. Hardware support of video decoding by embedded graphics cards directly affects the speed and quality of rendering videos.

• h265 / HEVC (8 bit)
  No Decode
• h265 / HEVC (10 bit)
  No Decode
• h264
  No Decode / Encode
• VP9
  No Decode
• VP8
  No Decode
• AV1
  No No
• AVC
  No Decode
• VC-1
  No Decode
• JPEG
  No Decode / Encode

To choose the best model between AMD Phenom II X2 521 and Qualcomm Snapdragon 678 you need to pay special attention to memory type, clock frequency, multi-channel features, and PCIe version. The higher these numbers are, the better your CPU will be. Keep in mind that the maximum memory and frequency may also depend on the model of the motherboard.

• Memory type
  DDR2-1066 LPDDR4X-1866
• ECC
  No No
• Memory channels
  2 2

AES-NI encryption support for CPUs AMD Phenom II X2 521 and Qualcomm Snapdragon 678.

• AES-NI
  No No

Let's find out what TDP value would be better for AMD Phenom II X2 521 or Qualcomm Snapdragon 678? The Thermal Design Power (TDP) indicates the maximum amount of heat that should be dissipated by the chip cooling system. However, the value of TDP gives only a rough indication of the real power consumption of the CPU.

• TDP (PL1)
  65 W

Here you can find a comparison of 2nd and 3rd level cache sizes for AMD Phenom II X2 521 and Qualcomm Snapdragon 678 CPUs along with a list of ISA extensions.

• Instruction set (ISA)
  x86-64 (64 bit) ARMv8-A64 (64 bit)
• Virtualization
  AMD-V None
• ISA extensions
  SSE3, SSE4a
• L3-Cache
  2.00 MB --
• Architecture
  Regor (K10) Kryo 460
• Technology
  45 nm 11 nm
• Socket
  AM3 N/A
• Release date
  Q2/2011 Q4/2020
• Part Number
  -- SM6150-AC

List of devices based on AMD Phenom II X2 521 and Qualcomm Snapdragon 678.

• Used in
  Unknown Xiaomi Redmi Note 10Motorola Moto G Stylus 2021