Radeon HD 6950 vs Radeon RX 460 2GB

Intro

Compare those specs to the Radeon RX 460 2GB, which features clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 memory. It features 896 SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
Radeon HD 6950		200 Watts
	Difference: 125 Watts (167%)

Memory Bandwidth

The Radeon HD 6950, in theory, should perform a lot faster than the Radeon RX 460 2GB overall. (explain)

Radeon HD 6950		160000 MB/sec
Radeon RX 460 2GB		112000 MB/sec
	Difference: 48000 (43%)

Texel Rate

The Radeon HD 6950 is a little bit (about 15%) more effective at texture filtering than the Radeon RX 460 2GB. (explain)

Radeon HD 6950		70400 Mtexels/sec
Radeon RX 460 2GB		61040 Mtexels/sec
	Difference: 9360 (15%)

Pixel Rate

The Radeon HD 6950 should be a lot (more or less 47%) more effective at FSAA than the Radeon RX 460 2GB, and also should be capable of handling higher resolutions better. (explain)

Radeon HD 6950		25600 Mpixels/sec
Radeon RX 460 2GB		17440 Mpixels/sec
	Difference: 8160 (47%)

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 data (in units of MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can 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 core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.