Radeon HD 5750 512MB vs Radeon HD 7750

Intro

Compare those specifications to the Radeon HD 7750, which makes use of a 28 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM works at a speed of 1125 MHz on this model. It features 512 SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon HD 5750 512MB		86 Watts
	Difference: 31 Watts (56%)

Memory Bandwidth

The Radeon HD 5750 512MB should theoretically be a small bit faster than the Radeon HD 7750 overall. (explain)

Radeon HD 5750 512MB		73600 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 1600 (2%)

Texel Rate

The Radeon HD 7750 will be a bit (approximately 2%) better at AF than the Radeon HD 5750 512MB. (explain)

Radeon HD 7750		25600 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 400 (2%)

Pixel Rate

The Radeon HD 7750 will be a bit (about 14%) more effective at FSAA than the Radeon HD 5750 512MB, and able to handle higher resolutions better. (explain)

Radeon HD 7750		12800 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 1600 (14%)

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 largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.