Radeon HD 5750 1GB vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which uses a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory works at a speed of 1500 MHz on this card. It features 2560 SPUs along with 160 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon R9 390 8G		275 Watts
	Difference: 189 Watts (220%)

Memory Bandwidth

As far as performance goes, the Radeon R9 390 8G should theoretically be a lot better than the Radeon HD 5750 1GB overall. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 310400 (422%)

Texel Rate

The Radeon R9 390 8G will be quite a bit (about 535%) better at anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 134800 (535%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390 8G is superior to the Radeon HD 5750 1GB, by a large margin. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 52800 (471%)

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 (in units of MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 per second. This figure is calculated by multiplying the total amount 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.