Radeon HD 3470 512MB vs Radeon R7 250X 2GB

Intro

Compare all of that to the Radeon R7 250X 2GB, which features a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R7 250X 2GB should perform a lot faster than the Radeon HD 3470 512MB overall. (explain)

Radeon R7 250X 2GB		72000 MB/sec
Radeon HD 3470 512MB		30400 MB/sec
	Difference: 41600 (137%)

Texel Rate

The Radeon R7 250X 2GB is a lot (about 1150%) more effective at AF than the Radeon HD 3470 512MB. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 36800 (1150%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R7 250X 2GB is superior to the Radeon HD 3470 512MB, by a large margin. (explain)

Radeon R7 250X 2GB		16000 Mpixels/sec
Radeon HD 3470 512MB		3200 Mpixels/sec
	Difference: 12800 (400%)

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: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the 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 core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.