Radeon HD 4850 2GB vs Radeon R7 370 4G

Intro

Compare that to the Radeon R7 370 4G, which features clock speeds of 975 MHz on the GPU, and 1400 MHz on the 4096 MB of GDDR5 RAM. It features 1024 SPUs as well as 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the Radeon R7 370 4G should perform quite a bit faster than the Radeon HD 4850 2GB overall. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 4850 2GB		63552 MB/sec
	Difference: 115648 (182%)

Texel Rate

The Radeon R7 370 4G will be much (more or less 150%) better at texture filtering than the Radeon HD 4850 2GB. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 4850 2GB		25000 Mtexels/sec
	Difference: 37400 (150%)

Pixel Rate

The Radeon R7 370 4G should be much (about 212%) better at AA than the Radeon HD 4850 2GB, and will be able to handle higher resolutions more effectively. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon HD 4850 2GB		10000 Mpixels/sec
	Difference: 21200 (212%)

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 (counted in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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