Radeon HD 4890 1GB vs Radeon R7 360

Intro

Compare all of that to the Radeon R7 360, which comes with clock speeds of 1050 MHz on the GPU, and 1625 MHz on the 2048 MB of GDDR5 RAM. It features 768 SPUs as well as 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 1GB		190 Watts
	Difference: 90 Watts (90%)

Memory Bandwidth

The Radeon HD 4890 1GB should in theory perform just a bit faster than the Radeon R7 360 overall. (explain)

Radeon HD 4890 1GB		124800 MB/sec
Radeon R7 360		104000 MB/sec
	Difference: 20800 (20%)

Texel Rate

The Radeon R7 360 is quite a bit (more or less 26%) more effective at AF than the Radeon HD 4890 1GB. (explain)

Radeon R7 360		50400 Mtexels/sec
Radeon HD 4890 1GB		40000 Mtexels/sec
	Difference: 10400 (26%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 360 is superior to the Radeon HD 4890 1GB, though only just barely. (explain)

Radeon R7 360		16800 Mpixels/sec
Radeon HD 4890 1GB		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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses 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 texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.