Radeon HD 5550 vs Radeon HD 7750

Intro

Compare all that to the Radeon HD 7750, which uses a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this specific model. It features 512 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 7750 should theoretically be a lot better than the Radeon HD 5550 overall. (explain)

Radeon HD 7750		72000 MB/sec
Radeon HD 5550		12800 MB/sec
	Difference: 59200 (463%)

Texel Rate

The Radeon HD 7750 should be much (more or less 191%) more effective at texture filtering than the Radeon HD 5550. (explain)

Radeon HD 7750		25600 Mtexels/sec
Radeon HD 5550		8800 Mtexels/sec
	Difference: 16800 (191%)

Pixel Rate

The Radeon HD 7750 is a lot (more or less 191%) faster with regards to AA than the Radeon HD 5550, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 7750		12800 Mpixels/sec
Radeon HD 5550		4400 Mpixels/sec
	Difference: 8400 (191%)

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 maximum amount of information (measured in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 amount of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video 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 amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.