Radeon HD 4850 512MB vs Radeon R7 370 4G

Intro

Compare that to the Radeon R7 370 4G, which makes use of a 28 nm design. AMD has set the core frequency at 975 MHz. The GDDR5 memory runs at a frequency of 1400 MHz on this card. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Performance-wise, the Radeon R7 370 4G should theoretically be much superior to the Radeon HD 4850 512MB overall. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 4850 512MB		63552 MB/sec
	Difference: 115648 (182%)

Texel Rate

The Radeon R7 370 4G will be quite a bit (more or less 150%) more effective at texture filtering than the Radeon HD 4850 512MB. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 37400 (150%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R7 370 4G is a better choice, by far. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon HD 4850 512MB		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: Memory bandwidth is the max amount of data (in units of MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.