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Radeon R9 270X vs Radeon R9 295X2

Intro

The Radeon R9 270X comes with a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1400 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon R9 295X2, which features a GPU core clock speed of 1018 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 512-bit bus. It also features 2816 Stream Processors, 176 Texture Address Units, and 64 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.

3DMark Fire Strike Graphics Score

Radeon R9 295X2 21205 points
Radeon R9 270X 6590 points
Difference: 14615 (222%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X 180 Watts
Radeon R9 295X2 500 Watts
Difference: 320 Watts (178%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 should be a lot faster than the Radeon R9 270X overall. (explain)

Radeon R9 295X2 640000 MB/sec
Radeon R9 270X 179200 MB/sec
Difference: 460800 (257%)

Texel Rate

The Radeon R9 295X2 will be much (about 348%) more effective at texture filtering than the Radeon R9 270X. (explain)

Radeon R9 295X2 358336 Mtexels/sec
Radeon R9 270X 80000 Mtexels/sec
Difference: 278336 (348%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 295X2 is a better choice, by far. (explain)

Radeon R9 295X2 130304 Mpixels/sec
Radeon R9 270X 32000 Mpixels/sec
Difference: 98304 (307%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon R9 270X

Amazon.com

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Radeon R9 295X2

Amazon.com

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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 R9 295X2
Manufacturer AMD AMD
Year October 2013 April 2014
Code Name Curacao XT Vesuvius
Memory 2048 MB 4096 MB (x2)
Core Speed 1000 MHz 1018 MHz (x2)
Memory Speed 5600 MHz 5000 MHz (x2)
Power (Max TDP) 180 watts 500 watts
Bandwidth 179200 MB/sec 640000 MB/sec
Texel Rate 80000 Mtexels/sec 358336 Mtexels/sec
Pixel Rate 32000 Mpixels/sec 130304 Mpixels/sec
Unified Shaders 1280 2816 (x2)
Texture Mapping Units 80 176 (x2)
Render Output Units 32 64 (x2)
Bus Type GDDR5 GDDR5
Bus Width 256-bit 512-bit (x2)
Fab Process 28 nm 28 nm
Transistors 2800 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R9 270X

Amazon.com

Check prices at:

Radeon R9 295X2

Amazon.com

Check prices at:

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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