7 Free GPU & VRAM Memory Test Tools [Best for 2025]

Faulty system memory can cause unexpected issues, often unrelated to RAM. Video card memory can also fail, affecting display output. GPU problems typically worsen under load, leading to crashes or performance drops.

Here are the six best GPU memory stress test tools to test the performance of your graphics units. 

Also read:

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• Best VRAM Test Online: Top 5 Tools to Check Your GPU

Best GPU & memory stress test tools

Software	Top Features	Best for	Price	Platform
Aida64 Extreme	CPU & GPU	Professionals & casual users	Free & Paid	Windows, Mac
CineBench	CPU and GPU benchmarking	Professionals and enthusiasts	Free	Windows, Mac
OCCT	Stability testing, monitoring	Overclockers, system stability testing	Free	Windows
Hwinfo64	System monitoring, hardware information	System hardware diagnostics	Free	Windows
Unigine Heaven	GPU benchmarking, stress testing	Gamers, GPU performance testing	Free	Windows
MemTest86+	System testing and diagnostics	System stability testing, memory testing	Free; Pro version available	Windows, Mac

1. AIDA64 Extreme – Best for In-Depth GPU & VRAM Diagnostics

• Operating System: Windows
• Pricing: Paid (Trial Available)
• Developer: FinalWire Ltd.

AIDA64 Extreme is a comprehensive diagnostic tool that provides detailed insights into GPU performance, VRAM health, and overall system stability. It’s ideal for enthusiasts and professionals needing deep hardware analysis.

Pros:

• Extensive GPU and VRAM monitoring features
• Real-time diagnostics and stress testing
• Supports a wide range of hardware components

Cons:

• May be overwhelming for casual users

• Paid software with limited trial access

Get Aida 64 Extreme

2. CineBench- best video memory stress test tool overall

• Operating System: Windows, Mac
• Pricing: Free
• Developer: Maxon Computer

CineBench is a powerful utility for evaluating system performance, particularly useful for gamers, content creators, and hardware enthusiasts.

Pros:

• Reliable and accurate benchmark scores
• Tests real-world GPU performance with advanced rendering algorithms
• Useful for assessing hardware upgrades

Cons:

• Primarily CPU-focused; GPU stress testing is secondary
• Not ideal for detecting memory errors

Download CineBench

3. OCCT – best for testing GPU stability and thermal performance

• Operating System: Windows, Mac, Android, iOS.
• Pricing: Free for personal use
• Developer: OCCT

OCCT is a versatile testing tool that stresses multiple components, including CPU, GPU, and power supply.

Its dedicated video memory test runs on most modern graphics cards.

Pros:

• Supports GPU, CPU, and power supply testing
• Portable and doesn’t require installation
• Logs and displays detected errors

Cons:

• May be too advanced for beginners
• Free version has limited features

Download OCCT

4. FurMark – best for testing overclocking stability

• Operating System: Windows
• Pricing: Free
• Developer: Geeks3D

FurMark is a long-standing GPU stress test tool, widely used for stability testing, especially in overclocked setups.

Pros:

• Ideal for checking GPU stability under heavy load
• Can expose video memory errors indirectly
• Includes additional tools like GPU-Z and GPU Shark

Cons:

• Can cause excessive heat buildup; monitor temperatures closely
• Doesn’t directly detect memory issues

Download FurMark

5. Hwinfo64 – best for GPU monitoring and reporting

• Operating System: Windows.
• Pricing: Free
• Developer: Realix

HWiNFO64 is a comprehensive hardware diagnostic tool that provides real-time monitoring of system components.

Pros:

• Provides detailed real-time system data
• Great for auditing hardware configuration
• Supports multiple data export formats

Cons:

• Lacks built-in benchmarking tools
• More suited for monitoring than stress testing

Download Hwinfo64

6. Unigine Heaven – best for GPU benchmarking and real-world stress testing

• Operating System: Windows
• Pricing: Free
• Developer: Unigine Company

Unigine Heaven is a powerful benchmarking tool that simulates gaming and rendering scenarios to stress test GPUs.

Pros:

• Simulates real-world gaming workloads
• Monitors temperature, FPS, and other stats in real-time
• Supports extended stress tests

Cons:

• Higher-end tests require powerful GPUs
• Not as specialized for memory errors

Download Unigine Heaven

7. MemTest86+ – best for overall system hardware testing

• Operating System: Windows
• Pricing: Free
• Developer: Company Name

MemTest86+ is a widely-used memory testing tool designed to diagnose RAM issues, including video memory faults.

Pros:

• Comprehensive memory testing
• Works on most hardware configurations
• Open-source and widely supported

Cons:

• Command-line based; less user-friendly
• Requires manual configuration for advanced testing

Download MemTest86+

Before you start stress testing your system, it is important that you know the variables involved in the process. As long as you know what you are testing, it is highly unlikely that something will go wrong.

Most modern GPUs have a built-in protection mechanism that will throttle the GPU performance when temperatures reach critical limits.