Difference Between SSD And RAM

Difference Between Solid State Drive VS Random Access Memory

Following are some common differences between RAM VS SSD.

Key RAM SSD |( Solid State Drive)
Definition RAM stands for Random Access Memory. SSD stands for solid-state drive.
Memory RAM is also known as Primary Memory or Main Memory. SSD is also known as Secondary Memory.
Component RAM has no moving mechanical parts and consists of transistors etc. SSD contains no moving mechanical parts
R/W Time RAM is more faster than SSD SSD is Less faster than RAM
Types 1.      FPM-(Fast page mode RAM)-

2.      EDO RAM (Extended data operations read-only memory)

3.      SDRAM (Single dynamic RAM)

4.      RDRAM (Rambus RAM)

5.      DDR (Double Data Rate)

6.      DDR2

7.      DDR3

8.      DDR4


2.      M.2 SATA SSD

3.      mSATA SSD

4.      M.2 PCI-E SSD

5.      M.2 NVMe SSD



maxmimum sped DDR4-1600 (or a 1,600MHz data rate) to DDR4-3200 (or a 3,200MHz data rate) about 560MB/s
Maximum Capacity 16.8 million terabytes 120GB to 30.72TB
Cost RAM is Much expensive as compared to SSD. SSD is less expensive as compared to RAM.
Impact on Speed RAM is low, computer will become slow. SSD has less impact on computer speed.
Famous items to buy SSD and RAM 1. Samsung 980 Pro

2. Kingston KC3000

3. WD Black SN850

4. Crucial P5 Plus

5. Sabrent Rocket 4 Plus

6. SK hynix Gold P31

7. Samsung 970 EVO Plus

8. Crucial P5 M.2 NVMe SSD

9. Patriot Viper VPR100

10. Sabrent Rocket Q

11. Samsung 980

12. WD Blue SN570

13. Samsung 870 EVO

14. Crucial MX500

15. Samsung 860 PRO

16. Intel Optane SSD DC P5800X

17. Seagate FireCuda 530

18. Corsair MP600 Pro XT

19. WD Black AN1500

1.         Corsair Vengeance RGB Pro

2.         Corsair Dominator Platinum RGB

3.         G.Skill Trident Z RGB

4.         Corsair Vengeance LPX

5.         Patriot Viper Elite

6.         Kingston HyperX Fury

7.         HyperX Predator DDR4 RGB

Corsair Vengeance Memory Kit 16GB DDR4

Introduced by Robert Dennard SanDisk
Introduction date 1968 1991



Types of RAM  with their invention year in tabular form

Type of RAM Invention year
DDR4 2012
DDR3 2007
DDR2 2003
DDR (Double Data Rate) 2000
RDRAM (Rambus RAM) 1998
SDRAM (Single dynamic RAM) 1996
EDO RAM (Extended data operations read-only memory) 1994
FPM-(Fast page mode RAM)- 1990


Types of SSD with their Maximum data transfer rate

SSD Type Maximum data transfer rate
MB/s Gbit/s
SATA 6.0 Gbit/s,
SATA Revision 3.x
SATA-III, SATA-600, SATA-6G 600 MB/s 6.0 Gbit/s
SATA 3.0 Gbit/s,
SATA Revision 2.x
SATA-II, SATA-300 300 MB/s 3.0 Gbit/s
SATA 1.5 Gbit/s SATA-I, SATA-150 150 MB/s 1.5 Gbit/s


Types of SSD with brand name, capacity and I/P speed.

Product Name Samsung 970 EVO NVMe (500GB) SSD Adata SU800 SATA (1TB) SSD Intel 660p Series (1TB) SSD Samsung 860 EVO (250G) SSD Corsair MP500 (480GB) SSD
SSD Brand   Samsung Adata Intel Samsung Corsair
Capacity in GB 500GB 1TB 1TB 250GB 480GB
I/O Speed in MB/s Up to 3500 MB/s Up to 560 MB/s Up to 1,800 MB/s Up to 550 MB/s Up to 3,000 MB/s