Radeon HD 5450 vs Radeon R9 M270X

Intro

Compare that to the Radeon R9 M270X, which makes use of a 28 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 RAM works at a speed of 1125 MHz on this particular card. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M270X will be 463% faster than the Radeon HD 5450 overall, because of its higher bandwidth. (explain)

Radeon R9 M270X		72000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 59200 (463%)

Texel Rate

The Radeon R9 M270X will be quite a bit (about 458%) more effective at AF than the Radeon HD 5450. (explain)

Radeon R9 M270X		29000 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 23800 (458%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M270X is the winner, by far. (explain)

Radeon R9 M270X		11600 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 9000 (346%)

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 MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of 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 a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.