Overview

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Insist on GDDR5 memory for an outstanding mobile computing experience!

GDDR5 is the ideal GPU graphics memory for the mainstream mobile users to achieve the right balance of high performance and power consumption for the ultimate on-the-go visual experience. Notebooks equipped with AMD Radeon™ HD 6000M Series GPUs and GDDR5 memory can enable up to 20% better graphics performance with minimal impact in battery life.¹

Advantages of GDDR5

GDDR5 is the de facto memory standard for today’s high performance GPUs – equip your notebooks with the latest and greatest technology!
Provides twice the bandwidth of DDR3 to unlock the true potential of AMD Radeon™ GPUs²

Why is Memory Bandwidth Important?

Notebooks with balanced amount of graphics memory and superior memory bandwidth will almost always provide a better visual computing experience
Smooth visual computing experience will offer highly perceivable improvements in overall system performance

Ultra-fast GDDR5 memory offers enhances the performance of AMD Radeon™ mobile graphics in the following areas:

Performance

Common Graphics Memory Myth – Is more really better?

Ideal memory capacity for mainstream notebook users is 512MB to 1GB of ultra-fast GDDR5 memory
GPUs paired with ultra-fast GDDR5 memory enable significant performance improvements relative to GPUs equipped with a greater amount of DDR3 memory at higher memory clock speed³
Extra unused graphics memory consumes extra power, generates excess heat, may effects battery life and will not improve system performance unlike RAM which can be allocated for other applications or caching purposes.

Performance: 512MB GDDR5 vs. 1GB DDR3

Performance: 1GB GDDR5 vs. 2GB DDR3

Footnotes

Based on internal ASIC power measurement data from the AMD Radeon™ HD 6490M 1GB GDDR5 @ 750MHz (engine clock)/800 MHz (memory clock) = 16.5W vs. AMD Radeon™ HD 6470M 1GB DDR3 @ 750MHz (engine clock)/900 MHz (memory clock) = 14.9W. Up to 29% performance improvement measured using 3DMark Vantage Performance scores for the AMD Radeon™ HD 6490M. AMD Radeon™ HD 6490M 3DMark Vantage Performance Scores = 1811 compared to 1401 for the AMD Radeon™ HD 6470M.System Configs: Asus M4A89GTD-Pro/USB3, CPU: AMD Phenom II 965 @ 2.3 GHz Quad Core, 4GB DDR3 1333, Windows® 7 64bit Ultimate, resolution 1280X800.
AMD Radeon™ HD 6400M series has GDDR5 memory bandwidth of 25.6 GB/sec vs. DDR3 memory bandwidth of 12.8-14.4 GB/sec
Up to 30% performance improvement measured using 3DMark Vantage Performance Scores AMD Radeon™ HD 6490M 512MB GDDR5 @ 750MHz (engine clock)/800 MHz (memory clock) = 2290 vs. AMD Radeon™ HD 6470M 1GB DDR3 @ 750MHz (engine clock)/900 MHz (memory clock) = 1766. Resolution 1280X800. System Configs: Asus M4A89GTD-Pro/USB3, CPU: AMD Phenom II 965 @ 2.3 GHz Quad Core, 4GB DDR3 1333, Windows 7® 64bit Ultimate.

GDDR5 Memory