Radeon HD 5750 512MB vs Radeon R9 380X

Intro

Compare all that to the Radeon R9 380X, which comes with a clock speed of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
Radeon R9 380X		190 Watts
	Difference: 104 Watts (121%)

Memory Bandwidth

The Radeon R9 380X should in theory be quite a bit faster than the Radeon HD 5750 512MB in general. (explain)

Radeon R9 380X		182400 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 108800 (148%)

Texel Rate

The Radeon R9 380X should be a lot (approximately 393%) faster with regards to AF than the Radeon HD 5750 512MB. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 98960 (393%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 380X is a better choice, by a large margin. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 19840 (177%)

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 moved past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.