AMD Athlon X4 850 vs AMD Athlon II X4 638

Comparative analysis of AMD Athlon X4 850 and AMD Athlon II X4 638 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

 

Differences

Reasons to consider the AMD Athlon X4 850

  • CPU is newer: launch date 3 year(s) 4 month(s) later
  • Processor is unlocked, an unlocked multiplier allows for easier overclocking
  • Around 44% higher clock speed: 3.9 GHz vs 2.7 GHz
  • Around 28% higher maximum core temperature: 90°C vs 70.10°C
  • A newer manufacturing process allows for a more powerful, yet cooler running processor: 28 nm vs 32 nm
  • Around 35% better performance in PassMark - Single thread mark: 1575 vs 1163
  • Around 50% better performance in PassMark - CPU mark: 3366 vs 2250
Specifications (specs)
Launch date Jul 2015 vs February 2012
Unlocked Unlocked vs Locked
Maximum frequency 3.9 GHz vs 2.7 GHz
Maximum core temperature 90°C vs 70.10°C
Manufacturing process technology 28 nm vs 32 nm
Benchmarks
PassMark - Single thread mark 1575 vs 1163
PassMark - CPU mark 3366 vs 2250

Reasons to consider the AMD Athlon II X4 638

  • 2x more L1 cache, more data can be stored in the L1 cache for quick access later
  • 1048576x more L2 cache, more data can be stored in the L2 cache for quick access later
L1 cache 512 KB vs 256K
L2 cache 4 MB vs 4MB

Compare benchmarks

CPU 1: AMD Athlon X4 850
CPU 2: AMD Athlon II X4 638

PassMark - Single thread mark
CPU 1
CPU 2
1575
1163
PassMark - CPU mark
CPU 1
CPU 2
3366
2250
Name AMD Athlon X4 850 AMD Athlon II X4 638
PassMark - Single thread mark 1575 1163
PassMark - CPU mark 3366 2250
Geekbench 4 - Single Core 1654
Geekbench 4 - Multi-Core 4651

Compare specifications (specs)

AMD Athlon X4 850 AMD Athlon II X4 638

Essentials

Architecture codename Godaveri Llano
Launch date Jul 2015 February 2012
Place in performance rating 1620 1618
Family AMD Athlon Processors
OPN PIB AD638XOJGXBOX
OPN Tray AD638XOJZ43GX
Price now $26.49
Series AMD Athlon II X4
Value for money (0-100) 35.55
Vertical segment Desktop

Performance

Base frequency 3.2 GHz 2.7 GHz
Die size 245 mm² 228 mm
L1 cache 256K 512 KB
L2 cache 4MB 4 MB
Manufacturing process technology 28 nm 32 nm
Maximum core temperature 90°C 70.10°C
Maximum frequency 3.9 GHz 2.7 GHz
Number of cores 4 4
Number of threads 4 4
Transistor count 2,411 million 1178 million
Unlocked
64 bit support

Memory

ECC memory support
Supported memory types DDR3-2133 MHz, Dual-channel DDR3

Compatibility

Max number of CPUs in a configuration 1 1
Sockets supported FM2+ FM1 uPGA
Thermal Design Power (TDP) 65 Watt 65 Watt

Peripherals

PCIe configurations Gen 3, 16 Lanes, (CPU only)

Virtualization

AMD Virtualization (AMD-V™)