Radeon HD 5670 vs Radeon R9 295X2

Intro

Compare those specifications to the Radeon R9 295X2, which has a clock speed of 1018 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 512-bit memory bus, and makes use of a 28 nm design. It is made up of 2816 SPUs, 176 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon R9 295X2		500 Watts
	Difference: 439 Watts (720%)

Memory Bandwidth

As far as performance goes, the Radeon R9 295X2 should in theory be quite a bit superior to the Radeon HD 5670 in general. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 576000 (900%)

Texel Rate

The Radeon R9 295X2 will be a lot (more or less 2212%) faster with regards to anisotropic filtering than the Radeon HD 5670. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 342836 (2212%)

Pixel Rate

The Radeon R9 295X2 should be quite a bit (about 2002%) better at anti-aliasing than the Radeon HD 5670, and also capable of handling higher resolutions more effectively. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 124104 (2002%)

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 information (measured in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 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 the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one 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 figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.