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Radeon R9 270 vs Radeon RX 470


Intro

The Radeon R9 270 has a core clock speed of 900 MHz and a GDDR5 memory speed of 1400 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It features 1280 SPUs, 80 TAUs, and 32 ROPs.

Compare all of that to the Radeon RX 470, which features GPU clock speed of 926 MHz, and 8192 MB of GDDR5 memory set to run at 1650 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

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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.

3DMark Fire Strike Graphics Score

Radeon RX 470 11810 points
Radeon R9 270 5940 points
Difference: 5870 (99%)

Ethereum Mining Hash Rate

Radeon RX 470 26 Mh/s
Radeon R9 270 15 Mh/s
Difference: 11 (73%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 120 Watts
Radeon R9 270 150 Watts
Difference: 30 Watts (25%)

Memory Bandwidth

As far as performance goes, the Radeon RX 470 should theoretically be a bit better than the Radeon R9 270 in general. (explain)

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

Texel Rate

The Radeon RX 470 will be a lot (approximately 65%) faster with regards to texture filtering than the Radeon R9 270. (explain)

Radeon RX 470 118528 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 46528 (65%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 470 is the winner, but it probably won't make a huge difference. (explain)

Radeon RX 470 29632 Mpixels/sec
Radeon R9 270 28800 Mpixels/sec
Difference: 832 (3%)

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

Radeon R9 270

Radeon RX 470

Specifications

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Model Radeon R9 270 Radeon RX 470
Manufacturer AMD AMD
Year November 2013 August 2016
Code Name Curacao Pro Polaris 10
Memory 2048 MB 8192 MB
Core Speed 900 MHz 926 MHz
Memory Speed 5600 MHz 6600 MHz
Power (Max TDP) 150 watts 120 watts
Bandwidth 179200 MB/sec 211200 MB/sec
Texel Rate 72000 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 28800 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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). 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 ability to reach the maximum fill rate.

Radeon R9 270

Radeon RX 470

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