Radeon HD 5750 1GB vs Radeon R9 280

Intro

Compare all of that to the Radeon R9 280, which features a clock speed of 933 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 384-bit memory bus, and uses a 28 nm design. It is comprised of 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon R9 280		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 280 is 226% quicker than the Radeon HD 5750 1GB in general, due to its greater data rate. (explain)

Radeon R9 280		240000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 166400 (226%)

Texel Rate

The Radeon R9 280 is quite a bit (more or less 315%) faster with regards to anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 280		104496 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 79296 (315%)

Pixel Rate

The Radeon R9 280 is much (approximately 167%) faster with regards to FSAA than the Radeon HD 5750 1GB, and capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 280		29856 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 18656 (167%)

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 largest amount of information (measured in MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.