Monitor marketing runs on words that sound technical but mean nothing: "gaming-grade", "pro-certified", "studio-quality". None of them is a standard anybody checks.
There are real specifications that matter, and there is a genuine international standard covering dead pixels that most buyers have never heard of. Knowing both is how you avoid overpaying — and how you win a warranty argument.
The dead pixel standard nobody tells you about
This is the single most useful thing in this article, because it decides whether a shop has to replace a faulty screen.
The relevant standard is ISO 9241-307. It defines three defect types:
- Type 1 — bright pixel: a white dot that stays lit on a black screen.
- Type 2 — dark pixel: a black dot that stays dead on a white screen.
- Type 3 — stuck sub-pixel: part of a pixel permanently on, off, or partly lit.
It then sets four classes by how many defects are permitted per million pixels:
| Class | Bright dots | Dark dots | Stuck sub-pixels |
|---|---|---|---|
| 0 | none | none | none |
| 1 | 1 | 1 | 2 |
| 2 | 2 | 2 | 5–10 |
| 3 | 5 | 15 | up to 50 |
Most consumer monitors are sold to Class 2. A manufacturer replaces the panel when defects exceed the class it was sold under — which is why "it only has two dead pixels" is sometimes a legitimate refusal rather than a brush-off.
Policies also vary by country of purchase, and some makers are stricter than the standard. Lenovo, for example, states that its monitors exceed ISO 9241 Class 1 and Class 2 requirements, with pixel and adjacent sub-pixel defects not permitted.
The specs that actually matter
- Panel type. IPS gives better colour and viewing angles than TN, which is why it dominates general-purpose monitors. For most work this matters more than any marketing phrase on the box.
- Resolution against size. 1080p looks fine at 24 inches. At 27 inches the same pixels are stretched further and text looks softer. If you are going bigger, higher resolution matters more than extra inches.
- Refresh rate. 60Hz is fine for documents and browsing. Higher rates matter for fast games, and almost nothing else.
- Ports. Check your laptop can actually drive it. HDMI and VGA are common on budget models; make sure you have the right cable or adapter before you leave the shop.
- Adaptive sync. FreeSync reduces tearing in games. Outside gaming it is close to irrelevant.
Notice what is missing: nothing about "pro-certified" or "studio-quality", because those are not specifications.
What monitors cost in Ghana
From Ghanaian retail listings. Prices as of October 2026 and they move with the exchange rate — confirm before buying.
- 23.8 inch, IPS, 1080p — around GHS 2,200 to 2,800. An HP M24f at a local retailer lists at GHS 2,790 with a one-year warranty.
- 27 inch, IPS, 1080p — around GHS 3,490 for an HP M27f.
Worth noting about that pair: same panel type, same resolution, about GHS 700 between them. The larger screen spreads the same pixel count over more area, so you get more desk presence and slightly softer text. Bigger is not automatically better.
Where paying more genuinely helps
Price does buy real things — just not always the things being advertised:
- Colour accuracy, if you do design or photo work and need what you see to match what prints or publishes.
- Higher resolution at larger sizes, which is a genuine text-clarity difference.
- Build and stand quality — height adjustment matters for your neck over years of use.
- Better warranty terms, including a stricter pixel policy.
And where it usually does not: curved panels for general work, ultra-high refresh rates if you do not game competitively, and anything whose main selling point is an adjective.
Buying checklist
- Power it on in the shop and check a full white and a full black screen.
- Ask for the warranty period and the pixel policy in writing.
- Confirm the ports match your laptop, and that the cable is included.
- Match resolution to size — 1080p at 24 inches, more pixels if going larger.
- Choose IPS unless you have a specific reason not to.
- Ignore every adjective on the box.
Sources
- Lenovo support — defective pixel policy and ISO 9241 standard reference. support.lenovo.com
- Unisystem — explanation of defective pixel types and ISO 9241-307 classes. unisystem.com
- Hilson Computers Ghana — current monitor listings and prices. hilsoncomputersgh.com
Common questions
How many dead pixels before a monitor can be replaced?
It depends on the ISO 9241-307 class it was sold under. Class 1 permits one bright and one dark dot; Class 2 permits two of each plus 5 to 10 stuck sub-pixels; Class 3 permits considerably more. A replacement is due when defects exceed the class. Some manufacturers, such as Lenovo, apply stricter rules than the standard.
How do I check for dead pixels before buying?
Ask the shop to power the monitor on and display a full white screen and then a full black one. Dark dots show against white, bright dots show against black. Do this before paying.
How much should a monitor cost in Ghana?
Ghanaian listings around October 2026 show roughly GHS 2,200 to 2,800 for a 24-inch IPS 1080p monitor and about GHS 3,490 for a 27-inch equivalent. Prices move with the exchange rate.
Is a more expensive monitor always better?
No. Paying more genuinely buys colour accuracy, higher resolution at larger sizes, better stands and stronger warranty terms. It does not buy anything from marketing phrases like "gaming-grade" or "studio-quality", which are not technical specifications.
Should I buy 24 inch or 27 inch?
At the same 1080p resolution, a 27-inch screen spreads the same pixels over more area, so text looks slightly softer than on a 24-inch. If you want a larger screen, consider a higher resolution rather than just more inches.