CPUID powerMAX vs MemTest86

CPCPUID powerMAX8.3Visit MemTest868.2Visit

Higher score CP CPUID powerMAX #5 in PC Stress Testing Tools 8.3/10 Free plan Free plan✓ 3 of 5 features Visit CPUID

vs

MemTest86 #6 in PC Stress Testing Tools 8.2/10 Free plan Free plan✓ 0 of 5 features Visit MemTest86

• CPUID powerMAX fits best

  Free CPU and GPU burn-in on Windows

• MemTest86 fits best

  Bootable RAM diagnostics and detailed fault reporting

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Side by side

Feature	CPCPUID powerMAX 8.3/10 Visit ↗	MemTest86 8.2/10 Visit ↗
At a glance
Editor score	8.3	8.2
Ranking	#5 in PC Stress Testing Tools	#6 in PC Stress Testing Tools
Best for	Free CPU and GPU burn-in on Windows	Bootable RAM diagnostics and detailed fault reporting
Pricing model	Free	Free plan + paid
Starting price	Free plan	$76/yr
Free plan	✓	✓
Free trial	—	—
Deployment	Desktop	Desktop
Platforms	Windows	Windows, macOS, Linux
Built for	Solo, Small business	Solo, Small business, Mid-market, Enterprise
Features CPUID powerMAX 3/5 · MemTest86 0/5
CPU stress testing	✓ (best)	Not checked yet
GPU stress testing	✓ (best)	Not checked yet
Memory stress testing	—	Not checked yet
Combined system workload	✓ (best)	Not checked yet
Error detection	Not checked yet	Not checked yet
Specs
Platform support	Windows	Not checked yet
Our review
Pros	Runs CPU tests across all CPUs recognized by Windows Offers separate CPU and GPU tests plus a combined workload Portable; requires no installation or administrator rights	Tests RAM from bootable USB or PXE media without an operating system 14 algorithms include Row Hammer detection, with ECC checks on supported hardware Pro adds customizable HTML reports, automation, and fault localization
Cons	Does not test memory Does not report stability errors or provide a stability score CPUID warns that use under some conditions can damage components	Focuses on memory rather than whole-PC stress testing Pro Download starts at $116 USD as a one-time purchase Updates, downloads, and support beyond 12 months require an extension
Our verdict	CPUID powerMAX is a free Windows utility for putting a PC’s CPU and GPU under heavy load. It suits people who want to check component stability and cooling, or raise total system power consumption to assess whether a power supply can… Read the review →	MemTest86 is standalone software for diagnosing RAM faults by booting from USB or network media, rather than running inside Windows, macOS, or Linux. It is aimed at system builders, PC repair stores, overclockers, manufacturers, and others… Read the review →

Strengths and trade-offs

• CPUID powerMAX — where it wins

  • Runs CPU tests across all CPUs recognized by Windows
  • Offers separate CPU and GPU tests plus a combined workload
  • Portable; requires no installation or administrator rights

  Where it doesn't

  • Does not test memory
  • Does not report stability errors or provide a stability score
  • CPUID warns that use under some conditions can damage components

• MemTest86 — where it wins

  • Tests RAM from bootable USB or PXE media without an operating system
  • 14 algorithms include Row Hammer detection, with ECC checks on supported hardware
  • Pro adds customizable HTML reports, automation, and fault localization

  Where it doesn't

  • Focuses on memory rather than whole-PC stress testing
  • Pro Download starts at $116 USD as a one-time purchase
  • Updates, downloads, and support beyond 12 months require an extension

• CPCPUID powerMAX8.3/10 · Free plan

  A free, portable Windows utility for separate or combined CPU and GPU burn-in.

  Visit CPUIDFull verdict →
• MemTest868.2/10 · Free plan

  A focused RAM diagnostic tool with a free edition and paid reporting and deployment options.

  Visit MemTest86Full verdict →