Radeon HD 5750 1GB vs Radeon R9 390X 8G

Intro

Compare all that to the Radeon R9 390X 8G, which makes use of a 28 nm design. AMD has clocked the core frequency at 1050 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this specific model. It features 2816 SPUs along with 176 TAUs and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Performance-wise, the Radeon R9 390X 8G should in theory be quite a bit superior to the Radeon HD 5750 1GB overall. (explain)

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

Texel Rate

The Radeon R9 390X 8G will be quite a bit (about 633%) faster with regards to anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 159600 (633%)

Pixel Rate

The Radeon R9 390X 8G should be a lot (approximately 500%) faster with regards to anti-aliasing than the Radeon HD 5750 1GB, and also will be able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 56000 (500%)

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 data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount 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 processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.