Radeon HD 3470 256MB vs Radeon R9 M265X

Intro

Compare that to the Radeon R9 M265X, which has a core clock speed of 575 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 made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M265X should be a lot faster than the Radeon HD 3470 256MB overall. (explain)

Radeon R9 M265X		72000 MB/sec
Radeon HD 3470 256MB		30400 MB/sec
	Difference: 41600 (137%)

Texel Rate

The Radeon R9 M265X will be a lot (approximately 619%) better at anisotropic filtering than the Radeon HD 3470 256MB. (explain)

Radeon R9 M265X		23000 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 19800 (619%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 M265X is the winner, by far. (explain)

Radeon R9 M265X		9200 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 6000 (188%)

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 max amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 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 ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.