Radeon HD 4550 256MB vs Radeon R9 M375

Intro

Compare those specifications to the Radeon R9 M375, which features GPU core speed of 1015 MHz, and 4096 MB of DDR3 memory running at 1100 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M375 should theoretically be quite a bit faster than the Radeon HD 4550 256MB overall. (explain)

Radeon R9 M375		35200 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 22400 (175%)

Texel Rate

The Radeon R9 M375 should be quite a bit (approximately 746%) better at anisotropic filtering than the Radeon HD 4550 256MB. (explain)

Radeon R9 M375		40600 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 35800 (746%)

Pixel Rate

The Radeon R9 M375 is a lot (approximately 577%) faster with regards to full screen anti-aliasing than the Radeon HD 4550 256MB, and also should be capable of handling higher resolutions more effectively. (explain)

Radeon R9 M375		16240 Mpixels/sec
Radeon HD 4550 256MB		2400 Mpixels/sec
	Difference: 13840 (577%)

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 (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.