Radeon HD 4870 2GB vs Radeon R7 360

Intro

Compare that to the Radeon R7 360, which features core clock speeds of 1050 MHz on the GPU, and 1625 MHz on the 2048 MB of GDDR5 memory. It features 768 SPUs as well as 48 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 360		100 Watts
Radeon HD 4870 2GB		150 Watts
	Difference: 50 Watts (50%)

Memory Bandwidth

In theory, the Radeon HD 4870 2GB is 11% faster than the Radeon R7 360 in general, because of its greater data rate. (explain)

Radeon HD 4870 2GB		115200 MB/sec
Radeon R7 360		104000 MB/sec
	Difference: 11200 (11%)

Texel Rate

The Radeon R7 360 should be a lot (more or less 68%) more effective at texture filtering than the Radeon HD 4870 2GB. (explain)

Radeon R7 360		50400 Mtexels/sec
Radeon HD 4870 2GB		30000 Mtexels/sec
	Difference: 20400 (68%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R7 360 is the winner, by far. (explain)

Radeon R7 360		16800 Mpixels/sec
Radeon HD 4870 2GB		12000 Mpixels/sec
	Difference: 4800 (40%)

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 largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card 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 number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.