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Differences What are the advantages of each

Front view of Radeon HD 6390

Reasons to consider the
AMD Radeon HD 6390

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GPUBoss is not aware of any important advantages of the AMD Radeon HD 6390 vs the Nvidia GeForce GT 740M.

Front view of GeForce GT 740M

Reasons to consider the
Nvidia GeForce GT 740M

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Higher clock speed 810 MHz vs 550 MHz More than 45% higher clock speed
Higher effective memory clock speed 1,802 MHz vs 1,000 MHz More than 80% higher effective memory clock speed
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
Higher memory clock speed 901 MHz vs 500 MHz More than 80% higher memory clock speed
More render output processors 16 vs 8 Twice as many render output processors

Features Key features of the Radeon HD 6390  vs GeForce GT 740M 

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

Radeon HD 6390
16 GB/s
GeForce GT 740M
28.83 GB/s

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

Radeon HD 6390
4.4 GPixel/s
GeForce GT 740M
6.48 GPixel/s

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

Radeon HD 6390
8.8 GTexel/s
GeForce GT 740M
25.92 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6390
GeForce GT 740M
622.1 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 6390  vs
GeForce GT 740M 
GPU brand AMD Nvidia
GPU name Redwood LE GK107
Market Desktop Laptop
Clock speed 550 MHz 810 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 320 384
Texture mapping units 16 32
Render output processors 8 16
Pixel rate 4.4 GPixel/s 6.48 GPixel/s
Texture rate 8.8 GTexel/s 25.92 GTexel/s
Floating-point performance 352 GFLOPS 622.1 GFLOPS


Radeon HD 6390  vs
GeForce GT 740M 
Memory clock speed 500 MHz 901 MHz
Effective memory clock speed 1,000 MHz 1,802 MHz
Memory bus 128 bit 128 bit
Memory 1,024 MB 2,048 MB
Memory type DDR2 DDR3
Memory bandwidth 16 GB/s 28.83 GB/s

noise and power

TDP 39W 45W

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