Computer hardware sites.
The best computer hardware advice sites are the larger sites. They
manage to review more hardware, and are sent the latest equipment by
manufacturers. They have staff to write regular article son what to buy
and how much to spend:
Tom reviews CPUs, motherboards, video cards and memory. He
has a large selection of old reviews and is up to date with the facts,
pointing out underwhelming hardware wherever he finds it.
Anand reviews a large variety of hardware, in-depth analysis of the
latest chips, motherboards and other hardware. He also has regular
"low-end" and "high-end" Buyer's Guides, both for
business users and gamers.
Other hardware sites
My advice on buying PC Hardware.
Tom's Hardware gives advice on CPUs,
video cards and SSDs
(storage), mostly aimed at gamers. But business/serious users may want
to take their advice (with low-end or built-in graphics options offered by
modern Intel and AMD chips).
If you have a monitor from an old machine, you may want to consider
buying just a base unit (a computer with no monitor). However, the
same machine with a new monitor might cost very little more (meaning
that you could go dual-screen or give away your old monitor).
Sometimes buying refurbished PCs makes sense for users with less
challenging requirements. For a desktop buy a modern-ish CPU (a 2nd or
later generation Core i3 or i5 for a desktop) and add a separately purchased
SSD. Equally a high-end i7 secondhand laptop might work well with an
There are UK comparison searches in:
The price comparison websites page has a
section on PCs for sites where
you can compare hardware prices.
The page on buying computers has
links to computer retailers.