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Hot CPU Tester Pro 4

Hot CPU Tester
Hot CPU Tester Pro 4.4

Hot CPU Tester Pro is a system health and stability tester. It tests CPU, chipset and virtually all parts of motherboard for errors/bugs, defective parts and components. It is a burn-in test with uniquely designed state of the art DefectTrack engine. DefectTrack is a technology developed by 7Byte to diagnose systems regarding its stability and in general, computer's health. Hot CPU Tester is currently being used in many labs and governmental organizations around the world, as a reliable stability testing utility.

7Byte’s Hot CPU Tester Pro 4 can help customers not only maximize their experiences with the AMD64 platform, but also help them explore the different form factor options to build the optimal PC.
-Tim Wright, director, desktop marketing, AMD’s Computation Products Group.


  • Revolutionary DefectTrack 2 engine, accurately tests the whole system and its subsets.
  • Written purely to test CPU, chipset, motherboard, Memory
  • Fully supports x64 computing platform(AMD64 Technology,Intel® EM64T)
  • Fuly supports dual-core and multi-processor systems
  • Fully supports Hyper-Threaded processors
  • Utilizes SSE,SSE2, SSE3, MMX & 3DNow! instructions sets
  • Tests L1 & L2 Cache
  • Tests System Bus & Memory Bus
  • Tests Chipset along with motherboard
  • Tests Hard Disk Drives
  • Monitors CPU performance under pressure
  • Built in Anti-Crash & Exception Handler
  • Comprehensive Benchmark tests
  • SMBIOS & CPUID featured
  • LiveSupport

How it works:
Hot CPU Tester Pro 4 is consisted of several test modules to stress-test each component within a system. Defective parts are most likely for to fail while they are under a heavy load, when the heat production is at its highest. The testing modules intentionally stress all components to their maximum limits to assess their integrity. Unstable parts cannot endure these pressures and will fail the tests, allowing the opportunity for an upgrade or exchange before the PC is released into a production environment. It is recommended that Hot CPU Tester should run for at least six hours to fully check the system. If a system is stable under hard conditions for six hours, it is unlikely to generate errors during normal operating conditions.


Hot CPU Tester Pro version changes history:

Change from Version 4.4 to Version 4.4.1
• Fixed a bug that caused the program to crash on certain Intel® motherboards

Change from Version 4.3 to Version 4.4
• Improved support for Windows Vista™
• Improved support for the newer Intel®  processrs:
    • Intel Xeon™ (Codename: Penryn)
    • Intel Core™ 2 Extreme (Codename: Yorkfield)
    • Intel Core™ 2 Quad (Codename: Yorkfield)
    • Intel Core™ 2 Duo (Codename: Wolfdale)
• Improved support for the following AMD®  processrs:
    • Atlon™ 64 X2(Codename: Windsor)
    • Atlon™ 64 FX (Codename: Windsor)
    • Atlon™ 64 (Codename: Orleans)
    • Sempron™ (Codename: Manila)
• Improved Hard Disk module test to detect SATA controller problems faster now
• Fixed a bug that caused memory burn-in to crash
• Due to 32bit limitations amount of memory to be tested is set below 4GB only
• Small cosmetic changes

Change from Version 4.2.2 to Version 4.3
• Updated DefectTrack engine(V2.2.0)  for the new generation of processors
• Added a new code path for Intel® Core™ microarchitecture
• Added a new code path for AMD Athlon™ 64 X2 and AMD Athlon™ 64 FX
• Added SSE3 test module(Combined with SSE2)
• Improved Chipset test module for the new generation of chipsets
• Improved Memory burn-in test to utilize more memory bandwidth
• Fixed bug: False ‘Calculating Pi’ error
• Fixed Dual-Core related issues
• Fixed false Chipset module errors on some NVIDIA nForce® motherboards
• Fixed some cosmetic GUI bugs

Change from Version 4.2 to Version 4.2.2
Fixed bug: False 3DNow!/MMX.SSE/SSE2 detection
Fixed bug: Crash during the diagnostic/benchmark on some systems

Change from Version 4.0 to Version 4.1
• Improved Complex Matrix Algorithm
• Improved Memory test
• Improved CPU/System detection
• Fixed bug: False error on L2 Cache module
• Fixed bug: False report on Non-Hyper-Threaded CPUs
• Small Tweaks to the engine & more bug fixed

Change from Version 4.0 to Version 4.1
• New improved algorithm for Chipset module
• New improved algorithm for Memory modules
• Improved CPU Burn-in test
• Improved Memory Burn-in test
• Fixed bug: Memory Burn-in test caused system to crash
• Fixed bug: System crashed during diagnostic test
• Small tweaks in DefectTrack core

Changes from Version 3.4.2 to Version 4.0
• Completely redesigned from scratch
• Fully compliant with AMD Athlon™ 64 & AMD Opteron™
• Fully compliant with Hyper-Threaded processors
• Fully compliant with multi-processor systems
• New DefectTrack v2.0(formerly known as DefectTech)
• Ability to generate debug dump to fully analyze the problem
• New test module added: Fast Fourier Transform
• New test module added: Sorting Algorithms consisted of 6 different sort algorithms
• Most test modules can be customized
• Comprehensive Synthetic Benchmark
• Burn-in CPU & Memory options
• New interface & look

Changes from Version 3.4.1 to Version 3.4.2
• Fixed bug: Problem with Complex Matrix progress bar
• Fixed bug: Problem with Prime Test progress bar
• New eSellerate engine v3.0.1.4

Changes from Version 3.4 to Version 3.4.1
• Does not need Windows Accessibility feature installed (OLEACC.DLL)

Changes from Version 3.3 to Version 3.4
• Improved module: QuickSort
• Improved module: Peripherals
• New eSellerate engine v2.1
• Minor tweaks & bugs fixed

Changes from Version 3.2 to Version 3.3
• New DefectTech v1.2 with heuristic algorithm
• Added Burn-in feature in the options menu
• Redesigned module: Complex Matrix
• Improved module: Chipset
• Improved module: L1 Cache
• Improved module: MMX
• Improved module: SSE
• Improved module: 3DNow!®
• Fixed bug: can detect ‘Copper mine’ Pentium® 3
• Minor tweaks & bugs fixed

Changes from Version 3.1 to Version 3.2
• Improved core
• Improved module: Pi test
• Improved module: Memory
• Improved module: Chipset (Pro version)
• Automatic update for registered users
• Fixed bug: AMD® 3DNow! ®Benchmarks
• Minor tweaks

Changes from Version 3.0 to Version 3.1
• DefectTech v1.1 can detect a wider range of errors and illegal instructions
• Improved module: QuickSort
• Improved module: Chipset
• Some minor improvement
• Some fixed bugs

Changes from Version 2.0.2 to Version 3.0
• Completely redesigned & rewritten
• Uniquely designed DefecTech technology for more accurate diagnostic
• New module: QuickSort
• New module: Peripherals
• All modules are redesigned & improved to comply with our DefecTech engine for best accuracy
• Logging feature added
• New LiveSupport feature with full technical support
• AutoUpdate feature added
• New libraries & instructions set added for Intel® Pentium® 4 and AMD Athlon XP™
• Instruction sets are chosen automatically
• Supports Microsoft® Windows XP®
• New interface & look