Radeon HD 5970 vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which uses a 28 nm design. AMD has set the core frequency at 575 MHz. The GDDR5 RAM runs at a frequency of 1125 MHz on this specific model. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 5970 is 256% faster than the Radeon R9 M265X in general, due to its greater data rate. (explain)

Radeon HD 5970		256000 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 184000 (256%)

Texel Rate

The Radeon HD 5970 will be quite a bit (about 909%) faster with regards to anisotropic filtering than the Radeon R9 M265X. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 209000 (909%)

Pixel Rate

The Radeon HD 5970 is a lot (about 909%) more effective at full screen anti-aliasing than the Radeon R9 M265X, and also capable of handling higher resolutions while still performing well. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 83600 (909%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.