Radeon HD 5830 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which has GPU clock speed of 750 MHz, and 4096 MB of GDDR5 memory set to run at 1375 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
Radeon HD 5830		175 Watts
	Difference: 50 Watts (40%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M295X should be much faster than the Radeon HD 5830 overall. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 48000 (38%)

Texel Rate

The Radeon R9 M295X is much (about 114%) faster with regards to AF than the Radeon HD 5830. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 51200 (114%)

Pixel Rate

The Radeon R9 M295X will be a lot (approximately 88%) more effective at FSAA than the Radeon HD 5830, and should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 11200 (88%)

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 information (measured in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's 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 number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units of the card by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.