AMD Athlon II X4 638
AMD Athlon II X4 638
Top 80%419 points
Top 80%
Top specs and features

AMD Athlon II X4 638 review: 21 facts and highlights

1. total clock speed

4 x 2.7GHz
AMD Ryzen Threadripper 2990WX: 32 x 3GHz

2. RAM speed

It can support faster memory, which will give quicker system performance.
1866MHz
AMD Ryzen 5 2500X: 2933MHz

3. CPU threads

More threads result in faster performance and better multitasking.
4
AMD Ryzen Threadripper 2990WX: 64

4. semiconductor size

A smaller size indicates that the process to create the chip is newer.
32nm
AMD Ryzen 5 2500X: 12nm

5. L2 cache

A larger L2 cache results in faster CPU and system-wide performance.
4MB
Intel Xeon Phi 7235: 32MB

6. L1 cache

A larger L1 cache results in faster CPU and system-wide performance.
512KB
AMD Ryzen Threadripper 2970WX: 2250KB

7. Supports 64-bit

A 32-bit operating system can only support up to 4GB of RAM. 64-bit allows more than 4GB, giving increased performance. It also allows you to run 64-bit applications.
AMD Athlon II X4 638
96% have it

8. thermal design power (TDP)

The thermal design power (TDP) is the maximum amount of power the cooling system needs to dissipate. A lower TDP typically means that it consumes less power.
65W
Intel Atom E3805: 3W

9. L2 core

More data can be stored in the L2 cache for access by each core of the CPU.
1MB/core
Intel Core i5-4200Y: 2.5MB/core

10. GeekBench result

This is a cross-platform benchmark that measures the performance of the CPU. (Source: Primate Labs, 2018)
3549
Intel Core i7-6950X: 51251

11. Has dynamic frequency scaling

Dynamic frequency scaling is a technology that allows the processor to conserve power and reduce noise when it is under a light load.
AMD Athlon II X4 638
88% have it

12. memory channels

More memory channels increases the speed of data transfer between the memory and the CPU.
2
Intel Atom x5-Z8350: 12.8

13. Supports hardware-assisted virtualization

It is easier to obtain better performance when using virtualization if it is hardware-assisted.
AMD Athlon II X4 638
94% have it

14. number of transistors

A higher transistor count generally indicates a newer, more powerful processor.
1178 million
AMD Ryzen Threadripper 2970WX: 9600 million

15. PCI Express (PCIe) version

PCI Express (PCIe) is a high speed expansion card standard, that connects the computer to it's peripherals. Newer versions can support more bandwidth and deliver better performance.
2
Intel Core i9-7920X: 44

16. Has NX bit

NX bit helps protect the computer from malicious attacks.
AMD Athlon II X4 638
94% have it

17. performance per watt

This means the CPU is more efficient, giving a greater amount of performance for each watt of power used.
55
Intel Core i5-7200U: 553.3

18. Has MMX

MMX is used to speed up tasks such as adjusting the contrast of an image or adjusting volume.
AMD Athlon II X4 638
95% have it

19. SSE version

SSE is used to speed up multimedia tasks such as editing an image or adjusting audio volume. Each new version contains new instructions and improvements.
4
AMD Ryzen 5 2500X: 4.2

20. height

40mm
Samsung Exynos 5 Dual: 11mm

21. width

40mm
Samsung Exynos 5 Dual: 11mm

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