Radeon HD 3470 256MB vs Radeon R7 M265

Intro

Compare those specifications to the Radeon R7 M265, which makes use of a 28 nm design. AMD has set the core speed at 725 MHz. The DDR3 memory is set to run at a frequency of 1000 MHz on this particular card. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R7 M265 should be a bit faster than the Radeon HD 3470 256MB overall. (explain)

Radeon R7 M265		32000 MB/sec
Radeon HD 3470 256MB		30400 MB/sec
	Difference: 1600 (5%)

Texel Rate

The Radeon R7 M265 will be a lot (more or less 444%) more effective at anisotropic filtering than the Radeon HD 3470 256MB. (explain)

Radeon R7 M265		17400 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 14200 (444%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R7 M265 is the winner, by a large margin. (explain)

Radeon R7 M265		5800 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 2600 (81%)

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 information (counted in megabytes per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 processed in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the 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 number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.