What Do Processor, RAM, and SSD Specifications Mean?

The processor: the computer’s brain and why it matters

Processor performance characteristics

The processor, also called the central processing unit (CPU), is the main computer component that performs calculations and executes tasks. Its performance depends not only on the clock speed (GHz), but also on architectural efficiency (IPC), the number of cores and threads, the size of the cache (L1/L2/L3), and cooling and power consumption (TDP). More cores let the computer process more tasks at the same time, while multithreading increases parallel work per core (e.g. 6 cores / 12 threads). The cache (L1/L2/L3) reduces the latency of accessing main memory and so increases overall speed. Modern CPUs also raise their “boost” clock dynamically when cooling and power limits allow, so real-world speed also depends on the system’s thermal conditions.

More RAM means smoother work

RAM is temporary memory that stores the data needed by running programs and the operating system. The larger the RAM capacity (GB), the more programs you can keep in memory and the more smoothly multitasking runs. Frequency (often given in MHz or MT/s) and the memory channel configuration (e.g. dual channel) also matter, because they determine how quickly data moves between RAM and the processor. The newer DDR5 generation offers higher bandwidth and better power efficiency than DDR4 (it has an integrated PMIC and higher typical speeds), but the real benefit depends on the workload; for everyday use, DDR4 is often enough.

SSD advantages compared with HDD

An SSD (Solid State Drive) has no moving parts, so it is faster, quieter, more shock-resistant and often more power-efficient than an HDD. By interface, SSDs are divided into SATA and NVMe (PCIe). SATA SSDs are usually limited to about 500–550 MB/s sequential read/write, while NVMe drives (PCIe Gen3/Gen4/Gen5) can reach several thousand MB/s – up to about 7,000 MB/s (Gen4) and even over 14,000 MB/s (Gen5) – which noticeably shortens boot, application and game loading times. When choosing one, look not only at capacity but also at the controller, cache (DRAM/Host Memory Buffer), TBW (endurance) and cooling.

Fast and reliable service

If your computer has slowed down, overheats or needs component upgrades, the Fixas computer repair workshop in Vilnius provides professional services throughout Lithuania. We carry out cooling-system maintenance (thermal paste, dust removal), speed-ups (RAM/SSD upgrades), screen, battery, charging port and keyboard replacement, and operating system reinstallation. When needed, we offer free diagnostics to pinpoint the fault and choose the best solution. Our technicians work quickly and carefully, and we can arrange convenient device pickup and delivery.