Radeon HD 5770 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which comes with GPU clock speed of 723 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also features 2048 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
Radeon R9 M395X		125 Watts
	Difference: 17 Watts (16%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M395X should be 108% faster than the Radeon HD 5770 in general, because of its greater bandwidth. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 83200 (108%)

Texel Rate

The Radeon R9 M395X is a lot (about 172%) better at AF than the Radeon HD 5770. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 58544 (172%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M395X is superior to the Radeon HD 5770, by far. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 9536 (70%)

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 information (measured in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels 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 calculated by multiplying the number of Render Output Units by the the card's clock speed. 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.