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HCI MemTest

hcidesign.com

Free plan WindowsLinux
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Spec score 8.9 #1 of 31 in PC Overclocking Software

What it is

HCI MemTest checks whether a computer can store and retrieve data from memory reliably. Its maker recommends running it after buying a computer, installing RAM, or changing the system configuration, including overclocking. The free MemTest download is Version 7.0 for Windows 9x, XP, 7, 8, 10, and 11; the product listing also names Linux. MemTest Pro adds controls for the number of threads and RAM assigned to each, plus summaries of results and total throughput. Pro also supports command-line automation, saves error logs to disk, and can test memory in the background while the computer is in use. Deluxe includes Pro and adds a 64-bit bootable CD or USB version that accesses all RAM without loading an operating system. That boot option requires CSM or legacy BIOS support. The maker recommends 100% coverage for most errors and around 400% for intermittent failures. The FAQ cautions that software cannot reliably identify a failing physical chip; testing modules one at a time may help isolate a faulty board. The free download can be unzipped into a folder and removed by deleting its contents. Free use is available; MemTest Pro costs $5, paid once, and Deluxe costs $14, paid once.

Spec sheet

What it does
MemTest checks whether Windows computers can reliably write and retrieve data from RAM.Read 15 Oct 2026 · hcidesign.com
Purpose
MemTest runs under Windows and checks whether a computer can reliably store and retrieve data from memory.Read 29 Sep 2026 · hcidesign.com
Support
The maker provides an online manual and FAQ for help using MemTest.Read 29 Sep 2026 · hcidesign.com
Allocation behavior
The FAQ warns that allocating more RAM than Windows can provide without swapping can make coverage progress very slow.Read 15 Oct 2026 · hcidesign.com
Automation
Pro offers full command-line control for automated or periodic testing.Read 29 Sep 2026 · hcidesign.com
Background mode
Pro includes a “nice” mode intended to test memory while the computer is being used normally.Read 15 Oct 2026 · hcidesign.com
Background testing
Pro includes a “nice” mode for testing RAM in the background during normal computer use.Read 29 Sep 2026 · hcidesign.com
Benchmark feature
Deluxe reports memory-checking rate as a basic speed benchmark for comparing BIOS settings.Read 15 Oct 2026 · hcidesign.com
Boot requirement
The Deluxe bootable tester requires a PC supporting CSM or legacy BIOS boot.Read 15 Oct 2026 · hcidesign.com
Chip identification limit
HCI Design says software cannot reliably identify the failing physical memory chip; users must isolate modules by testing them separately.Read 15 Oct 2026 · hcidesign.com
Command-line automation
Pro provides full command-line control for automated or scheduled testing.Read 15 Oct 2026 · hcidesign.com
Compatibility limit
The Deluxe bootable version requires a PC that supports CSM or legacy BIOS boot.Read 29 Sep 2026 · hcidesign.com
Continuous error testing
Pro can continue after errors instead of pausing, allowing correlation with temperature or GPU workload.Read 15 Oct 2026 · hcidesign.com
Coverage guidance
The FAQ says 100% coverage should catch non-intermittent errors and recommends about 400% for intermittent failures.Read 15 Oct 2026 · hcidesign.com
Deluxe boot mode
Deluxe adds a 64-bit version that runs from bootable CD or USB without loading an operating system and can directly access all RAM.Read 29 Sep 2026 · hcidesign.com
Diagnostic limit
The FAQ says software cannot reliably pinpoint the physical memory chip that is failing; it suggests testing modules one at a time to isolate a faulty board.Read 29 Sep 2026 · hcidesign.com
Documentation
The maker supplies an online manual, an included manual, and an FAQ page, with technical support by email.Read 15 Oct 2026 · hcidesign.com
Error logs
Pro logs errors to disk so users can send an error report to the RAM seller or review what happened after a crash or shutdown.Read 29 Sep 2026 · hcidesign.com
Error meaning
The maker treats even one reported memory error as evidence of a RAM or configuration problem.Read 15 Oct 2026 · hcidesign.com
Independent boot-testing view
A Tom’s Hardware forum moderator said boot media provides the most complete memory test.Read 15 Oct 2026 · forums.tomshardware.com
Independent download listing
Heise lists MemTest 7.0 as a Windows memory-defect detector made by HCI Design.Read 15 Oct 2026 · heise.de
Independent OS limitation
A Tom’s Hardware forum participant argued that an operating-system test cannot access memory regions reserved by Windows and therefore cannot fully test the configuration.Read 15 Oct 2026 · forums.tomshardware.com
Installation and removal
The free download can be unzipped into a folder, does not modify files elsewhere or the registry, and can be removed by deleting its folder contents.Read 29 Sep 2026 · hcidesign.com
Limit: allocation ceiling
The HCI-Launcher project documents a maximum allocation of 3548MB for one thread.Read 15 Oct 2026 · github.com
Limit: manual parallelism
Tom’s Hardware says users generally need one instance per processor thread, making large-thread-count testing cumbersome.Read 15 Oct 2026 · tomshardware.com
Limit: manual setup
The HCI-Launcher README says users still must manually enter memory amounts and start each launched test instance.Read 15 Oct 2026 · github.com
Limit: per-instance memory
Tom’s Hardware reports that the basic edition can test only about 2GB to 3.5GB per instance, which complicates large-memory or many-thread systems.Read 15 Oct 2026 · tomshardware.com
Limit: single-threaded free edition
The HCI-Launcher project describes the free MemTest executable as single-threaded and says multiple instances can contend for CPU cores.Read 15 Oct 2026 · github.com
Limit: Windows coverage
Reddit discussions repeatedly note that running inside Windows leaves some memory unavailable to the test.Read 15 Oct 2026 · reddit.com
Logging
Pro writes errors to disk so users can send reports to a RAM seller or inspect failures after a crash or shutdown.Read 15 Oct 2026 · hcidesign.com
Maker background
HCI Design says it has had an online presence since 1998 and describes its product line as RAM testing tools and Windows utilities for power users.Read 29 Sep 2026 · hcidesign.com
Maker history
HCI Design says it has maintained an online presence since 1998.Read 15 Oct 2026 · hcidesign.com
Memory coverage
The Deluxe boot version can access all installed RAM because it runs before an operating system loads.Read 15 Oct 2026 · hcidesign.com
Portable installation
The free edition is installed by unzipping a folder and changes neither the registry nor other files.Read 15 Oct 2026 · hcidesign.com
Portable removal
Uninstalling the free edition consists of deleting its folder contents.Read 15 Oct 2026 · hcidesign.com
Praise: ease of use
Tom’s Hardware describes HCI Memtest as one of the simplest and easiest programs for detecting RAM errors.Read 15 Oct 2026 · tomshardware.com
Praise: error detection
A Reddit user reported HCI MemTest finding errors quickly on systems where MemTest86 had passed.Read 15 Oct 2026 · reddit.com
Praise: intermittent errors
Another Reddit user said HCI MemTest found rare errors after other tests appeared clean.Read 15 Oct 2026 · reddit.com
Pro controls
MemTest Pro has an advanced interface with control over thread count and RAM per thread, and summarizes results across threads and total test throughput.Read 29 Sep 2026 · hcidesign.com
Release history
The product page records version 7.0 changes including thread and RAM controls, aggregate results and total throughput display in Pro.Read 15 Oct 2026 · hcidesign.com
Security claim
HCI Design states that all of its products are free of spyware, adware and malware.Read 15 Oct 2026 · hcidesign.com
Supported Windows
The maker lists compatibility with Windows 9x, XP, 7, 8, 10 and 11.Read 15 Oct 2026 · hcidesign.com
Third-party launcher licence
The community HCI-Launcher utility is published under GPL-3.0, while its README describes HCI MemTest as the proprietary program it launches.Read 15 Oct 2026 · github.com
Use cases
HCI Design recommends testing after buying a computer, installing RAM, or changing BIOS or overclock settings.Read 15 Oct 2026 · hcidesign.com
Version
The current product page identifies MemTest as version 7.0.Read 15 Oct 2026 · hcidesign.com

Plans and prices

MemTest Free Free RAM reliability testing · No advertisements Read 20 Sep 2026 · hcidesign.com
MemTest Pro $5, paid once Delivered via email Advanced user interface · Command-line control · Automatic multi-instance testing · Error logging · Background testing Read 20 Sep 2026 · hcidesign.com
MemTest Deluxe $14, paid once Delivered via email Includes MemTest Pro · Bootable CD/USB version · Direct access to all RAM · Basic memory-speed benchmarking Read 20 Sep 2026 · hcidesign.com
MemTest Free Windows program · Version 7.0 · 15K ZIP · free/no ads Read 15 Oct 2026 · hcidesign.com
MemTest (free) Free Windows; Version 7.0; 15K ZIP download Read 29 Sep 2026 · hcidesign.com
MemTest Pro $5, paid once delivered via email Advanced UI · command-line control · disk error logs · background “nice” mode · home and commercial use Read 15 Oct 2026 · hcidesign.com
MemTest Deluxe $14, paid once delivered via email Includes Pro · bootable CD/USB · 64-bit tester · CSM/legacy BIOS required · tests all RAM · memory-speed benchmark Read 15 Oct 2026 · hcidesign.com

Every HCI MemTest plan and price →

Strong points and limits

Strong points

  • Free Windows download, Version 7.0.
  • Pro controls thread count and RAM per thread.
  • Pro supports command-line and periodic testing.
  • Deluxe can access all RAM at boot.
  • Free download can be removed by deleting its folder.

Limits

  • Deluxe boot mode requires CSM or legacy BIOS.
  • Software cannot reliably pinpoint a failing memory chip.
  • MemTest Pro costs $5, paid once.
  • MemTest Deluxe costs $14, paid once.

Who it suits

It suits people checking RAM after a new computer, memory installation, or system configuration change. Pro adds automation and background testing, while Deluxe is for users who need boot-time access to all RAM and have CSM or legacy BIOS support.

Verdict

HCI MemTest offers a free way to check memory, with Pro options for automation, logging, and testing during normal use. Choose Deluxe only if its bootable access to all RAM fits your system’s boot support.

Where Specifiction places it

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