Radeon R7 250X vs Radeon RX 460 2GB

Intro

Compare those specifications to the Radeon RX 460 2GB, which comes with a core clock frequency of 1090 MHz and a GDDR5 memory frequency of 1750 MHz. It also makes use of a 128-bit bus, and uses a 14 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
Radeon R7 250X		95 Watts
	Difference: 20 Watts (27%)

Memory Bandwidth

Performance-wise, the Radeon RX 460 2GB should in theory be a lot better than the Radeon R7 250X in general. (explain)

Radeon RX 460 2GB		112000 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 40000 (56%)

Texel Rate

The Radeon RX 460 2GB is a lot (more or less 53%) faster with regards to anisotropic filtering than the Radeon R7 250X. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 21040 (53%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 460 2GB is superior to the Radeon R7 250X, but it probably won't make a huge difference. (explain)

Radeon RX 460 2GB		17440 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 1440 (9%)

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

Specifications

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

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.