Radeon HD 3470 512MB vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which features a GPU core clock speed of 730 MHz, and 2048 MB of DDR3 RAM set to run at 900 MHz through a 128-bit bus. It also is comprised of 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 3470 512MB should theoretically be a small bit better than the Radeon R7 240 in general. (explain)

Radeon HD 3470 512MB		30400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 1600 (6%)

Texel Rate

The Radeon R7 240 is much (approximately 356%) faster with regards to AF than the Radeon HD 3470 512MB. (explain)

Radeon R7 240		14600 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 11400 (356%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 240 is superior to the Radeon HD 3470 512MB, and very much so. (explain)

Radeon R7 240		5840 Mpixels/sec
Radeon HD 3470 512MB		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 information (counted in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can 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 Raster Operations Pipelines by the the card's 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 bandwidth is, the lower the potential to reach the maximum fill rate.