Radeon R7 250X 2GB vs Radeon RX 470

Intro

Compare all that to the Radeon RX 470, which uses a 14 nm design. AMD has set the core frequency at 926 MHz. The GDDR5 RAM is set to run at a frequency of 1650 MHz on this specific model. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon RX 470		120 Watts
	Difference: 25 Watts (26%)

Memory Bandwidth

Performance-wise, the Radeon RX 470 should theoretically be a lot better than the Radeon R7 250X 2GB in general. (explain)

Radeon RX 470		211200 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 139200 (193%)

Texel Rate

The Radeon RX 470 should be much (more or less 196%) faster with regards to AF than the Radeon R7 250X 2GB. (explain)

Radeon RX 470		118528 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 78528 (196%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 470 is a better choice, and very much so. (explain)

Radeon RX 470		29632 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 13632 (85%)

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

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.