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Differences What are the advantages of each

Front view of Radeon R9 290X Battlefield 4

Reasons to consider the
AMD Radeon R9 290X Battlefield 4

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Better floating-point performance 4,506 GFLOPS vs 1,280 GFLOPS More than 3.5x better floating-point performance
More memory 4,096 MB vs 1,024 MB 4x more memory
Many more shading units 2,816 vs 640 2176 more shading units
Many more texture mapping units 176 vs 40 136 more texture mapping units
Significantly more render output processors 44 vs 16 28 more render output processors
Higher pixel rate 35.2 GPixel/s vs 16 GPixel/s Around 2.2x higher pixel rate
Wider memory bus 512 bit vs 128 bit 4x wider memory bus
Higher memory clock speed 1,250 MHz vs 1,125 MHz More than 10% higher memory clock speed
Front view of Radeon HD 7770

Reasons to consider the
AMD Radeon HD 7770

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Higher clock speed 1,000 MHz vs 800 MHz 25% higher clock speed
Much lower TDP 80W vs 250W 3.1x lower TDP

Features Key features of the Radeon R9 290X Battlefield 4  vs HD 7770 

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

Radeon HD 7770
16 GPixel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7770
1,280 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

render output processors GPU commponents responsible for transform pixels as they flow between memory buffers

compute units Discrete cores within the GPU

Specifications Full list of technical specs

gpu

Radeon R9 290X Battlefield 4  vs
HD 7770 
GPU brand AMD AMD
GPU name Hawaii Cape Verde XT
Clock speed 800 MHz 1,000 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 2,816 640
Texture mapping units 176 40
Render output processors 44 16
Compute units 11 10
Pixel rate 35.2 GPixel/s 16 GPixel/s
Floating-point performance 4,506 GFLOPS 1,280 GFLOPS

memory

Radeon R9 290X Battlefield 4  vs
HD 7770 
Memory clock speed 1,250 MHz 1,125 MHz
Effective memory clock speed 5,000 MHz 4,500 MHz
Memory bus 512 bit 128 bit
Memory 4,096 MB 1,024 MB
Memory type GDDR5 GDDR5

noise and power

TDP 250W 80W

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