Radeon HD 5450 vs Radeon R9 M385X

Intro

Compare those specifications to the Radeon R9 M385X, which uses a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 memory works at a speed of 1500 MHz on this specific model. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M385X will be 650% faster than the Radeon HD 5450 overall, because of its higher data rate. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 83200 (650%)

Texel Rate

The Radeon R9 M385X will be much (approximately 1085%) faster with regards to AF than the Radeon HD 5450. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 56400 (1085%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M385X is superior to the Radeon HD 5450, by a large margin. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 15000 (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 maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core clock 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 applied per second.

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