Radeon HD 5770 vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which features core speeds of 750 MHz on the GPU, and 1375 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 5770		108 Watts
Radeon R9 M295X		125 Watts
	Difference: 17 Watts (16%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M295X is 129% faster than the Radeon HD 5770 overall, because of its higher bandwidth. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 99200 (129%)

Texel Rate

The Radeon R9 M295X is quite a bit (more or less 182%) faster with regards to texture filtering than the Radeon HD 5770. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 62000 (182%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 M295X is superior to the Radeon HD 5770, and very much so. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 10400 (76%)

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 across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling 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 video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.