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Differences What are the advantages of each

Front view of Radeon HD 5770 X2

Reasons to consider the
Generic Radeon HD 5770 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Front view of GeForce GTX 970

Reasons to consider the
Nvidia GeForce GTX 970

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Significantly higher effective memory clock speed 7,012 MHz vs 4,800 MHz More than 45% higher effective memory clock speed
Significantly higher memory bandwidth 224.4 GB/s vs 153.6 GB/s More than 45% higher memory bandwidth
Higher clock speed 1,050 MHz vs 850 MHz Around 25% higher clock speed
More memory 4,096 MB vs 2,048 MB 2x more memory
Higher pixel rate 58.8 GPixel/s vs 27.2 GPixel/s Around 2.2x higher pixel rate
Higher texture rate 109.2 GTexel/s vs 68 GTexel/s More than 60% higher texture rate
Significantly more render output processors 56 vs 32 24 more render output processors
Better floating-point performance 3,494 GFLOPS vs 2,720 GFLOPS Around 30% better floating-point performance
Significantly higher memory clock speed 1,753 MHz vs 1,200 MHz More than 45% higher memory clock speed
More texture mapping units 104 vs 80 24 more texture mapping units

Features Key features of the Radeon HD 5770 X2  vs GeForce GTX 970 

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

Radeon HD 5770 X2
153.6 GB/s
GeForce GTX 970
224.4 GB/s

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

Radeon HD 5770 X2
27.2 GPixel/s
GeForce GTX 970
58.8 GPixel/s

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

Radeon HD 5770 X2
68 GTexel/s
GeForce GTX 970
109.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 5770 X2
2,720 GFLOPS
GeForce GTX 970
3,494 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

gpu

Radeon HD 5770 X2  vs
GeForce GTX 970 
GPU brand ATI Nvidia
GPU name Juniper GM204
Market Desktop Desktop
Clock speed 850 MHz 1,050 MHz
Is dual GPU Yes No
Reference card ATi Radeon HD 5770 X2 850 MHz 2 GB None

raw performance

Shading units 1,600 1,664
Texture mapping units 80 104
Render output processors 32 56
Pixel rate 27.2 GPixel/s 58.8 GPixel/s
Texture rate 68 GTexel/s 109.2 GTexel/s
Floating-point performance 2,720 GFLOPS 3,494 GFLOPS

memory

Radeon HD 5770 X2  vs
GeForce GTX 970 
Memory clock speed 1,200 MHz 1,753 MHz
Effective memory clock speed 4,800 MHz 7,012 MHz
Memory bus 256 bit 256 bit
Memory 2,048 MB 4,096 MB
Memory type GDDR5 GDDR5
Memory bandwidth 153.6 GB/s 224.4 GB/s

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