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Radeon R9 270X vs Radeon RX 470 4GB

Intro

The Radeon R9 270X makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM works at a frequency of 1400 MHz on this specific card. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Compare all of that to the Radeon RX 470 4GB, which has a clock speed of 926 MHz and a GDDR5 memory frequency of 1650 MHz. It also features a 256-bit bus, and uses a 14 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

Zcash Mining Hash Rate

Radeon RX 470 4GB 270 Sol/s
Radeon R9 270X 177 Sol/s
Difference: 93 (53%)

Ethereum Mining Hash Rate

Radeon RX 470 4GB 27 Mh/s
Radeon R9 270X 18 Mh/s
Difference: 9 (50%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB 120 Watts
Radeon R9 270X 180 Watts
Difference: 60 Watts (50%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB should be 18% quicker than the Radeon R9 270X overall, due to its greater bandwidth. (explain)

Radeon RX 470 4GB 211200 MB/sec
Radeon R9 270X 179200 MB/sec
Difference: 32000 (18%)

Texel Rate

The Radeon RX 470 4GB should be a lot (approximately 48%) more effective at texture filtering than the Radeon R9 270X. (explain)

Radeon RX 470 4GB 118528 Mtexels/sec
Radeon R9 270X 80000 Mtexels/sec
Difference: 38528 (48%)

Pixel Rate

The Radeon R9 270X should be just a bit (more or less 8%) better at anti-aliasing than the Radeon RX 470 4GB, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 270X 32000 Mpixels/sec
Radeon RX 470 4GB 29632 Mpixels/sec
Difference: 2368 (8%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon R9 270X

Amazon.com

Radeon RX 470 4GB

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R9 270X Radeon RX 470 4GB
Manufacturer AMD AMD
Year October 2013 August 2016
Code Name Curacao XT Polaris 10
Memory 2048 MB 4096 MB
Core Speed 1000 MHz 926 MHz
Memory Speed 5600 MHz 6600 MHz
Power (Max TDP) 180 watts 120 watts
Bandwidth 179200 MB/sec 211200 MB/sec
Texel Rate 80000 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 32000 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 1280 2048
Texture Mapping Units 80 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 2800 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon R9 270X

Amazon.com

Radeon RX 470 4GB

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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