Radeon HD 4890 2GB vs Radeon R7 360

Intro

Compare those specifications to the Radeon R7 360, which has a clock speed of 1050 MHz and a GDDR5 memory frequency of 1625 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is made up of 768 SPUs, 48 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 360		100 Watts
Radeon HD 4890 2GB		190 Watts
	Difference: 90 Watts (90%)

Memory Bandwidth

The Radeon HD 4890 2GB should in theory perform a small bit faster than the Radeon R7 360 overall. (explain)

Radeon HD 4890 2GB		124800 MB/sec
Radeon R7 360		104000 MB/sec
	Difference: 20800 (20%)

Texel Rate

The Radeon R7 360 should be quite a bit (about 26%) more effective at texture filtering than the Radeon HD 4890 2GB. (explain)

Radeon R7 360		50400 Mtexels/sec
Radeon HD 4890 2GB		40000 Mtexels/sec
	Difference: 10400 (26%)

Pixel Rate

The Radeon R7 360 will be a little bit (more or less 5%) more effective at FSAA than the Radeon HD 4890 2GB, and also will be able to handle higher resolutions more effectively. (explain)

Radeon R7 360		16800 Mpixels/sec
Radeon HD 4890 2GB		16000 Mpixels/sec
	Difference: 800 (5%)

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 (in units of MB per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units by the core 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 a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's 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 is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.