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Differences What are the advantages of each

Front view of Radeon HD 6830M

Reasons to consider the
AMD Radeon HD 6830M

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Significantly lower TDP 39W vs 175W 4.5x lower TDP
Front view of Radeon HD 5830

Reasons to consider the
ATi Radeon HD 5830

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Higher clock speed 800 MHz vs 575 MHz Around 40% higher clock speed
Higher effective memory clock speed 4,000 MHz vs 1,600 MHz 2.5x higher effective memory clock speed
Higher memory bandwidth 128 GB/s vs 25.6 GB/s 5x higher memory bandwidth
Better floating-point performance 1,792 GFLOPS vs 920 GFLOPS Around 95% better floating-point performance
More shading units 1,120 vs 800 320 more shading units
Higher memory clock speed 1,000 MHz vs 800 MHz 25% higher memory clock speed

Features Key features of the Radeon HD 6830M  vs 5830 

memory bandwidth Rate at which data can be read from or stored in onboard memory

Radeon HD 6830M
25.6 GB/s
Radeon HD 5830
128 GB/s

pixel rate Number of pixels a graphics card can render to the screen every second

Radeon HD 6830M
9.2 GPixel/s
Radeon HD 5830
12.8 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

Radeon HD 6830M
23 GTexel/s
Radeon HD 5830
44.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6830M
Radeon HD 5830
1,792 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

Specifications Full list of technical specs


Radeon HD 6830M  vs
GPU name Granville Cypress
Market Laptop Desktop
Clock speed 575 MHz 800 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 800 1,120
Texture mapping units 40 56
Render output processors 16 16
Compute units 10 14
Pixel rate 9.2 GPixel/s 12.8 GPixel/s
Texture rate 23 GTexel/s 44.8 GTexel/s
Floating-point performance 920 GFLOPS 1,792 GFLOPS


Radeon HD 6830M  vs
Memory clock speed 800 MHz 1,000 MHz
Effective memory clock speed 1,600 MHz 4,000 MHz
Memory bus 128 bit 256 bit
Memory 1,024 MB 1,024 MB
Memory type DDR3 GDDR5
Memory bandwidth 25.6 GB/s 128 GB/s

noise and power

TDP 39W 175W


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