Radeon HD 4890 1GB vs Radeon R7 360

Intro

Compare those specs to the Radeon R7 360, which has clock speeds of 1050 MHz on the GPU, and 1625 MHz on the 2048 MB of GDDR5 memory. It features 768 SPUs along with 48 TAUs and 16 Rasterization Operator Units.

Display Graphs

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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

Theoretically speaking, the Radeon HD 4890 1GB should perform a bit faster than the Radeon R7 360 in general. (explain)

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

Texel Rate

The Radeon R7 360 should be much (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 running with lots of anti-aliasing is important to you, then the Radeon R7 360 is superior to the Radeon HD 4890 1GB, not by a very large margin though. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once 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 anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.