Radeon HD 4870 X2 vs Radeon R7 370 2G

Intro

Compare all of that to the Radeon R7 370 2G, which features clock speeds of 975 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 2G		110 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 240 Watts (218%)

Memory Bandwidth

In theory, the Radeon HD 4870 X2 is 29% faster than the Radeon R7 370 2G overall, because of its greater data rate. (explain)

Radeon HD 4870 X2		230400 MB/sec
Radeon R7 370 2G		179200 MB/sec
	Difference: 51200 (29%)

Texel Rate

The Radeon R7 370 2G is a small bit (about 4%) better at texture filtering than the Radeon HD 4870 X2. (explain)

Radeon R7 370 2G		62400 Mtexels/sec
Radeon HD 4870 X2		60000 Mtexels/sec
	Difference: 2400 (4%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R7 370 2G is the winner, and very much so. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 7200 (30%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 can be applied per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.