Radeon HD 5670 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which comes with core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon R9 M395X		125 Watts
	Difference: 64 Watts (105%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M395X is 150% faster than the Radeon HD 5670 overall, due to its higher data rate. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 96000 (150%)

Texel Rate

The Radeon R9 M395X will be a lot (approximately 497%) more effective at texture filtering than the Radeon HD 5670. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 77044 (497%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M395X is the winner, and very much so. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 16936 (273%)

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 (in units of MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at 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 the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. 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 lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.