✅ Correct answer: ALL of them

A computer is not fast because of one part. It’s fast because parts work together.

❌ No

Cheap motherboard limits CPU, HDD slows everything, and weak PSU causes instability. Power without support is wasted power.

✅ CPU

CPU decides, RAM holds, Storage supplies, and GPU displays. CPU always decides first.

❌ No

CPU only processes. Storage (SSD/HDD) stores files permanently, and RAM holds them temporarily. CPU is smart, but it has no memory of yesterday.

✅ Potential Bottleneck

It could be a CPU bottleneck, slow RAM, or an HDD instead of an SSD. If the CPU can’t feed the GPU fast enough, the GPU waits.

✅ (B) 4 cores @ 4.5 GHz

Single task benefits from higher clock speed. Multiple tasks benefit from more cores. Speed helps one task, cores help many tasks.

✅ (B) Programmer

AMD typically offers more cores and better multitasking performance for the price. Brand doesn't matter; workload matters.

✅ (B) i5 12th Gen

Newer architecture and better efficiency mean a modern i5 often beats an older i7. Generation beats brand tier.

✅ 12

The first digits (in this case, 12) represent the generation. For example, i5-10400 is older (10th Gen) than i5-12400 (12th Gen).

❌ No

Different brands use different naming systems. Numbers that look similar often have completely different meanings. Compare only within the same brand.

✅ (C) Coding + multiple apps

Coding and multitasking involve parallel workloads where more cores significantly help. Cores matter only when you actually use them.

✅ Yes

Motherboards affect power delivery, RAM speeds, and thermal management. The motherboard decides how much the CPU is allowed to shine.

✅ (B) PC won’t start

Physical and electrical mismatches mean the PC will not boot. Wrong socket means zero performance.

✅ B-series

B-series motherboards offer the best balance of features, cost, and future upgradeability. High-end is not smart if you don't use it.

✅ (C) Power delivery (VRMs)

Weak VRMs lead to thermal throttling and lower performance. CPU performance depends on how well it is fed.

✅ (C) Deleted

RAM is volatile memory. It clears completely when power is gone. CPU smartness doesn't help with memory that's literally gone.

❌ No

Having enough RAM helps avoid slow storage access, but adding more RAM than your applications need won't improve speed. Unused RAM is wasted RAM.

✅ (C) Balance of both

High speed (MHz) with high latency (CL) cancels out. Real-world performance comes from balancing frequency and response delay. Fast delivery with slow response is still slow.

❌ No

DDR4 and DDR5 have different physical layouts (notch position) and electrical standards. RAM generations are not backward compatible.

✅ (B) 2×8 GB RAM

Using two sticks enables dual-channel mode, doubling the bandwidth between RAM and CPU. Two roads move traffic better than one.

✅ For Parallel Work

A GPU is designed to do many small tasks at the exact same time. While a CPU is like a manager making decisions, a GPU is like a factory with thousands of workers doing repetitive work.

✅ (C) Office + browsing

Integrated GPUs (built into the CPU) are more than enough for basic tasks. Buying a dedicated GPU you don't use is just wasting money and power.

✅ Different Priorities

Workstation GPUs are optimized for extreme accuracy and have certified drivers for professional software. They aren't tuned for maximum Frames Per Second (FPS) like gaming cards.

✅ (B) VRAM

High-resolution textures live in the VRAM. If the textures don't fit into the available VRAM, performance will drop significantly as the system swaps data.

✅ System Instability

A weak PSU doesn't just mean the PC won't start; it can lead to random shutdowns, thermal throttling, and even risk damaging your expensive components. A powerful GPU is useless without stable power.

✅ (C) Clean, stable power

High wattage doesn't matter if the power is "dirty" or unstable. A PSU's primary job is to protect your expensive components from electrical damage. It doesn't make performance; it protects it.

❌ No

Your PC only draws the power it actually needs from the PSU. A 1000W PSU doesn't use 1000W of electricity unless the components demand it. Capacity is not consumption.

✅ Higher Efficiency

An 80+ Gold rating means the PSU is highly efficient at converting wall power to PC power. This results in less wasted energy (heat), a longer lifespan, and often quieter operation. Efficiency saves heat, not performance.

❌ No

Internal pin layouts on the PSU side are not standardized. Using the wrong cable can send the wrong voltage to your components and kill your whole PC instantly. Never mix cables.

✅ (C) SSD instead of HDD

The Operating System loads directly from your storage device. Replacing a slow mechanical HDD with a fast SSD is the most impactful upgrade for system responsiveness. Speed starts where data lives.

✅ (D) B and C

Both SATA and NVMe SSDs are solid-state drives, meaning they use flash memory and have no moving parts. HDDs are mechanical and have spinning platters. Moving parts mean waiting.

❌ No (mostly)

FPS depends primarily on your CPU and GPU. Storage speed affects how fast the game and its levels load, but not how fast the game engine renders frames. Storage decides how fast you start, not how fast you run.

✅ (C) Slower performance

Modern CPUs will reduce their clock speeds (thermal throttling) to generate less heat and protect themselves from damage. Heat doesn't break performance — it limits it.

✅ (C) Higher refresh rate

A higher refresh rate (e.g., 144Hz vs 60Hz) makes every motion on the screen look significantly smoother. Your eyes feel the refresh rate even before they notice the resolution.

✅ Performance Standards

DisplayPort generally supports higher refresh rates and resolutions compared to older HDMI versions. Your choice of cable can literally limit what your monitor is capable of displaying.

❌ No

USB-C is just the physical shape of the connector. The actual capability (speed, charging, display out) depends on the protocol running behind it (USB 2.0, 3.2, Thunderbolt, etc.). Shape is not speed.

✅ (D) Cables

Front panel connectors, power cables, and fan headers are the most common points of failure in a new build. Always check your cable connections before panicking about faulty hardware.

✅ Yes (but useless)

Hardware will power on and perform basic POST checks, but without an OS, the user has no way to interact with the system or run applications. The OS gives the hardware a functional voice.

✅ Missing Drivers

A fresh OS install only has generic drivers. You must install specific hardware drivers to enable full performance and features. The OS runs the hardware, but drivers unlock its true potential.

✅ Safe Settings

Most high-speed RAM requires enabling XMP (Intel) or EXPO (AMD) in the BIOS to reach its advertised speed. Default settings are chosen for maximum safety, not maximum speed.

✅ Power & Cooling

Desktops have much higher power limits and superior cooling solutions. Even with the "same" chip name, the desktop version has the freedom to run at higher speeds for longer. Same name, different freedom.

❌ No

There is no single "best" computer—only the right computer for the specific task at hand. Engineering is all about choosing the right trade-offs for your needs.

✅ (C) Logical system thinking

You didn't just learn about parts; you learned how to think like an engineer. Logical system thinking allows you to build, troubleshoot, and optimize any technology. You've trained your mind, not just your memory.