Radeon HD 3470 256MB vs Radeon R7 240

Intro

Compare all of that to the Radeon R7 240, which makes use of a 28 nm design. AMD has set the core frequency at 730 MHz. The DDR3 memory is set to run at a frequency of 900 MHz on this specific card. It features 320 SPUs along with 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3470 256MB should theoretically be a little bit faster than the Radeon R7 240 overall. (explain)

Radeon HD 3470 256MB		30400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 1600 (6%)

Texel Rate

The Radeon R7 240 is much (about 356%) better at texture filtering than the Radeon HD 3470 256MB. (explain)

Radeon R7 240		14600 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 11400 (356%)

Pixel Rate

The Radeon R7 240 will be quite a bit (about 83%) better at FSAA than the Radeon HD 3470 256MB, and will be able to handle higher resolutions while still performing well. (explain)

Radeon R7 240		5840 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 2640 (83%)

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 max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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 - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.